The Home Inspector

Reuben Saltzman is a second-generation home inspector with a passion for his work. Naturally, this blog is all about home inspections and home-related topics in the Twin Cities metro area. In addition to working at Structure Tech, he is also a licensed Truth-In-Sale of Housing Evaluator in Minneapolis, Saint Paul and several other cities.

Posts about Home Improvement

How to Inspect Your Own House, Part 6: Plumbing

Posted by: Reuben Saltzman Updated: October 13, 2014 - 5:24 AM

If it's leaking, fix it.  The end.

Ok, I'm kidding.  Today I'm going to share some home inspection tips and tricks that homeowners can use to identify plumbing problems.  You'll want to use a good flashlight for your plumbing inspection, as a lot of this work involves looking underneath sinks and tub drains.

Bathroom Sinks

Most homeowners already know about the more obvious leaks under bathroom sinks, but to really test your sink for leaks, fill the sink with water and then let it drain all at once.  This test will force a large slug of water through the drain, and will often identify leaks that wouldn't otherwise be seen.  Carefully watch the drain while performing this test.  One of the most common leak locations at bathroom sinks is at the drain stopper; fixing this leak is usually as simple as tightening the nut.

Note: if your drain goes "glug glug glug" after the water has drained out, you're hearing air getting siphoned through the trap, which indicates a problem with the venting.  Click this link for more information on that topic: Plumbing Vents: Why Houses Need Them.

If the bathroom sink drains slowly, it's usually the result of hair in the drain.  Fix this by pulling the hair out with a Zip-It tool.  What's a Zip-It?  I'm glad you asked.  It's an inexpensive, effective, and easy-to-use drain cleaning product invented by a Minnesotan.  Click the following link to find out, but prepare yourself to see some absolutely disgusting photos of hairballs removed from drains: http://zipitclean.com/

Toilets

Stand at the toilet with the front of the bowl between your legs, and give the toilet a little nudge with your shin to make sure it doesn't rock or swivel.  A loose toilet can lead to a leaking toilet.

Flush the toilet several times times and check behind, around, and under the toilet (if possible) for any leaks.

If you have a toilet that clogs frequently, replace it.  I recommend using Consumer Reports to help decide on a toilet.  Their team tirelessly tests toilets in the most tasteful manner possible to figure out which ones have the best flushing ability.  I've trusted them in the past, and they haven't let me down.  I'll leave it at that.

Showers/Tubs

I wrote a whole blog post about identifying shower leaks over five years ago, and not much has changed since: http://www.structuretech1.com/2009/07/finding-shower-leaks/ .

To inspect bath tub drains, first make sure there is access to the drain.  Sometimes this will be in the form of a large access panel in the room behind the tub, sometimes it will be an access panel at the ceiling below, and sometimes it will simply be a return register grill screwed to the wall that covers a hole in the wall.  The photo below shows a comically small access hole for the bath tub drain at a recent new construction inspection in Otsego.

Comically Small access hole

This next photo shows a more traditional, old-school access panel behind a basement bath tub.  The faucet was leaking profusely, but there were no rooms below, so the homeowner didn't know it was leaking.

Leaking bath tub faucet

Once you've established that there is access to inspect the bath tub drain, fill the tub with water all the way to the overflow, and watch the overflow from the back side to make sure that water doesn't leak out.  A leaking bath tub overflow can lead to a big mess, and this is one test that is specifically excluded by home inspection standards of practice.  After you've made sure the overflow doesn't leak, pull the drain at the tub and make sure the drain itself doesn't leak.  If there are any leaks at the faucet, you'll probably find them while doing this test.

The other common issue with showers and tubs is a slow drain, again, usually because of hair.  Get a Zip-It.

Kitchen Sink

For the kitchen sink, fill up both sides of the sink with water, pull the stoppers, then immediately turn on the garbage disposer if present.  This will force a lot of water through the drain all at once, and will often identify leaks and drain problems that nobody knew about.  Sometimes this test will even force water to shoot out of a crack in the side of the garbage disposer.

Crack in Disposer

If there's a problem with the sink drain, water will typically back up on the side of the sink that doesn't have a disposer, as shown in the photo below.

Water backing up in sink

The culprit is typically old galvanized steel drain lines, which accumulate sediment on the insides of the pipes, making the internal diameter smaller and smaller over time, to the point where the fixtures drain very slowly, or not at all.  The fix for this condition is to replace the drains, which is an expensive repair.

This test on the kitchen sink will also sometimes expose problems that show up in other areas; we've caused water to back up through reverse osmosis water dispensers, basement bathroom sinks, basement floor drains, basement laundry sinks, and basement standpipes by doing this test.  After conducting this test, go downstairs and make sure none of the other plumbing fixtures have backed up.  If they have, there's a problem with the drains.

I have a few short clips of these things happening in my "47 Home Inspection Issues in Under 3 Minutes" video.  At the 12 second mark, you'll see a basement bathroom sink overflowing (I had fun cleaning that up), a standpipe overflowing (Milind had fun cleaning that up), two more clips that aren't related, then a water dispenser overflowing at a kitchen sink.

Floor Drains

The most common issue with a floor drain is a missing clean-out plug.  This will allow hazardous, stinky sewer gas into the home.  For information about how to identify and correct this condition, check out my blog post on floor drain basics.

Side note: floor drains are usually the focus of attention when a main building drain is clogged.  I've received more comments on my blog post on floor drains than any other post.  Most of the comments were from frustrated homeowners dealing with clogged main drain lines.  If the main drain line in your home is clogged, water draining from the upper fixtures will starting backing up out of the lowest fixture.  The lowest fixture is almost always a floor drain, so that's where water comes out.  This really has nothing to do with the floor drain; it's just were the problem manifests itself because the floor drain is the lowest fixture.

Water Heaters

Water Heater Draft HoodI've already blogged about water heaters ad nauseam, so I'll make this short and sweet.  Perhaps the easiest thing to check on your water heater is to make sure it's set to a safe temperature, which is about 120° - 125° Fahrenheit.  If your water heater has a draft hood (pictured at right), make sure your water heater drafts properly under a worst-case scenario.  Also, check the relief valve discharge tube for signs of leaking.  Leaking can lead to corrosion, and corrosion can lead to failure (and failure can lead to the dark side).

If your water heater is leaking from the bottom, it's time for a new water heater.

Here are several other blog posts related to water heaters:

That's all for this week.  Next week I'll show you how to identify and correct the most common plumbing cross-connections in your home. Click on any of the links below to see the past topics in this series:

Author: Reuben SaltzmanStructure Tech Home Inspections

          

How To Inspect Your Own House, Part 5: Electrical

Posted by: Reuben Saltzman Updated: October 6, 2014 - 11:55 AM

A few months ago I wrote a blog post about homeowner maintenance inspections, wherein I promoted the virtues of having a home inspector conduct maintenance inspections on existing homes every five years or so.  I promised to follow up with a post on how homeowners could conduct their own home inspections, but I don't know what I was thinking when I said I'd follow up with a "post".  I should have said I'd follow up with my longest "series" of posts ever.  For the first part of this series, I covered the inspection of the exterior.  I took a little break in this series because I had a few other things to discuss that were somewhat time sensitive, but I'm back on the homeowner inspection series again.

Today I'm going to cover electrical.  There is a ridiculous amount of stuff that could be covered with this topic, and a lot of it takes a lot of explaining.  I'm going to cover the stuff that takes the least amount of explaining and makes the biggest impact on safety.

Overhead Wires

If your home has overhead wires bringing in power, check to make sure there are no tree branches rubbing on the wires.  It's the homeowner's responsibility to maintain / trim trees on the property that may interfere with the overhead wires coming from the utility pole to the house.

trees-rubbing-on-wires

Also, take a close look at the connection point between the overhead wires right before they disappear into the mast head.  One wire is the neutral wire; it's normal for this wire to be exposed, but the other two wires shouldn't have any exposed contacts.  If there are, these are serious shock / electrocution hazards that should be repaired by the utility company.  The photo below gives an example of an exposed ferrule at one of the hot wires.  Touch that thing with an aluminum ladder, roof rake, or something similar, and it'll be lights out for you.

For more examples of exposed conductors at this location, and for a more in-depth discussion of these issues, click here: Tree Branches, Exposed Power Lines: Who Fixes What

Outlets

Outlet TesterTo test the outlets at your home, go buy yourself an outlet tester.  These are sold at all home improvement stores and hardware stores for about $5, or a little more if the tester comes with a GFCI tester.  A GFCI tester makes it a lot easier to verify that non-GFCI outlets in your home are GFCI protected, but it's not a valid way to test GFCI outlets.  More on that topic below.  The tester shown at right currently sells for $7.49 on Amazon. So now that you have a tester, go around and test all of the outlets in your home.  The light codes displayed by the tester will tell you if the outlet is properly wired, or what the problem is if the outlet isn't properly wired.

Side note: these types of testers will not identify all potential wiring problems, such as a false ground or an outlet with both reversed polarity and an open ground, but they'll probably identify about 99% of the problems that exist.

Here are the potential readings that an outlet tester will give you:

  • Open Ground - more commonly described as an ungrounded three-prong outlet.  Click this link for information about how to correct an ungrounded three-prong outlet.  This is a condition that should be repaired by an electrician.
  • Open Neutral - this is a very uncommon defect; it means there is power at the outlet, but whatever is plugged into the outlet won't work.  Every once in a while, this is the result of a switched neutral wire.
  • Open Hot - there's no "hot" wire at the outlet... or there's a live hot and no neutral and no ground.  Whatever is plugged into the outlet won't work.  Sometimes this might be the result of a switched outlet and the switch is just off, but in many cases it just means it's a dead outlet.
  • Hot/GRD Rev - this is an extremely scary condition that I don't think I've ever actually come across.  Plugging in a tool with a three-prong cord would instantly energize the housing of the tool, making it an electrocution hazard.  If you find this condition at a GFCI outlet, hit the "test" and then the "reset" button on the outlet and test it again.  GFCI outlets will occasionally give funny readings that are not correct.
  • Hot/Neu Rev - more commonly described as reversed polarity.  Click this link for information about reversed polarity.  This is a shock hazard that should be repaired by an electrician.

Every once in a while you'll get a different reading, such as all three lights lit up, or a bright middle light and dim lights on the left and right.  These readings indicate problems that should be looked into further by an electrician.

If there are loose outlets, the repair is usually as simple as removing the cover plate and tightening the screws that hold the outlet in place.

Test all of the GFCI devices in your home to make sure they're functional, and replace them if they're not.  This is something that's supposed to be done every month... and I'm sure that everyone who reads this blog already does this, right?  But just in case, here's a short video clip from Leviton showing how to do it: https://www.youtube.com/watch?v=5mSroP-HWZ0

Also, make sure that there is GFCI protection for the outlets where you're most likely to get electrocuted.  These areas include bathrooms, garages, unfinished basements, the exterior, and many other places near water.  Click the following link for more information about testing GFCI outlets.  Oh, and if you press the test button and the outlet makes a buzzing noise, the outlet has gone bad and should be replaced.

Cover Plates

Not only do cover plates help to prevent accidental shocks, but they help to contain any arcing or sparking that might take place within an electrical box, thus potentially preventing a fire.  Go through your home and make sure there are cover plates installed for all of the outlets, switches, and junction boxes.  A few of the more common places for missing cover plates are in unfinished basement areas, behind refrigerators, inside kitchen cabinets, and at garage ceilings.

Missing cover plate at switch

While this is usually a very simple DIY repair, the photo above shows a situation where the fix isn't quite so simple; if a cover plate was installed over the pegboard, it would leave a gap between the box and the cover that could allow sparks to escape and potentially start a fire.  The fix for this situation would actually involve cutting away the pegboard a little more so that a cover plate could be installed tight against the box.

Extension Cords

Permanently installed appliances should be plugged directly into their own outlets, not extension cords.  Using extension cords increases the potential for a fire.  A few of the more common places to find extension cords used in lieu of permanent wiring are at garage door openers, water softeners, and at basement lights.

Wiring

Uncapped, improperly terminated wires are an immediate shock / electrocution hazard that should be dealt with immediately.  Always assume these wires are live.

Uncapped wire

Open spliced wiring is a potential fire hazard.

Open splices

Wooden boxes don't cut it either; wire splices should take place within proper electrical boxes.

Open spliced wiring at vanity lights

Wiring defects are probably best left up to an electrician for repair.

Openings in Boxes and Electric Panels

Unused openings in electrical boxes and electric panels should always be covered.

Missing knockout plug  Opening in panel cover

These openings create potential shock hazards, they might not properly contain a fire that could occur within the box, and can admit unwanted visitors such as mice.

Mouse in panel

These types of defects are very much a DIY type of repair; for information on how to correct these issues, click here: Missing Knockouts

Smoke Alarms

Check to make sure your home has smoke alarms installed inside each bedroom, smoke alarms installed in common areas on each level, and make sure they're properly located; the diagram below shows where smoke alarms should be located on walls and ceilings.

smoke alarm location

Test smoke alarms monthly, and replace the batteries annually.

Replace any smoke alarms over 10 years old.  To check the date, take the smoke alarm down and look on the back.  If you can't find a date, assume it's over 10 years old and replace it.

Please please please make sure your home is equipped with photoelectric smoke alarms.  If you don't know what type of smoke alarms you have, I can just about guarantee they're not photoelectric, as I've found that the vast majority of smoke alarms are not.  While photoelectric smoke alarms are not required, I believe they should be, and I consider this to be an important life safety issue.  Click this link for more information about the importance of photoelectric smoke alarms: Photoelectric Smoke Alarms.

For more details and tips on smoke alarm safety, click here: Four Smoke Alarm Safety Tips.

Carbon Monoxide Alarms

The current standard for safety is to have CO alarms installed within 10' of every sleeping room.  CO alarms used to be good for either five or seven years, but Kidde now offers CO alarms that are good for 10 years.  If the CO alarms in your home are over 10 years old, they should definitely be replaced.  If they're over five years old... maybe.

Next week, the topic will be homeowner plumbing inspections.

Click on any of the links below to see the past topics in this series:

Author: Reuben SaltzmanStructure Tech Home Inspections

          

Fall Maintenance Checklist for Minnesota Homeowners

Posted by: Reuben Saltzman Updated: September 29, 2014 - 5:14 AM

Even though it still feels like summer outside, Fall is officially here.  It's time to get started on your fall maintenance list.  It's much easier to get this stuff done while it's still pleasant outside, so don't put these projects off until we have snow in the forecast.

This list was originally compiled by Structure Tech Home Inspector Duane Erickson, and has been added onto a few times over the past several years.

Water

  • Disconnect any garden hoses.
  • If the exterior faucets are not frost free, drain the water out.  See How to Prevent Your Outside Faucets from Freezing.
  • If you have a lawn sprinkler system (aka "irrigation system") it needs to be drained and blown out with compressed air.  Hire a pro to do this.
  • Remove any pond pumps, and store the pump in your basement in a 5-gallon bucket filled with water.  This will help to prevent the seals from drying out.

Air

  • Clean the combustion air or makeup air intake vents.
  • If an air exchange system is present, such as a heat recovery ventilator (HRV), clean it.  Regular maintenance items for an HRV include cleaning the exterior intake, the filters, and the core.  See HRV maintenance.
  • Clean the clothes dryer duct.  The damper at the exterior should move freely and close properly.  See dryer duct maintenance.
  • Check the bathroom and kitchen exhaust dampers for wasp nests.  The nests will prevent the dampers from openings.  See Bath Fan Terminal Inspections.

Roof

  • Clean the soffit vents.  These can get clogged up with lint, dust, insulation, and paint.  They’re located under the roof overhangs.
  • Check the roof vents for bird nests.
  • Clean the gutters after all the leaves have fallen.
  • If the downspouts or sump pumps drain in to an underground system, re-direct them to drain to the ground surface when feasible.  See Sump Pump Discharge.

Air Conditioner

  • Outdoor covers are NOT necessary.  If a cover is used, it should be the type that only covers the top, not a full enclosure.
  • If the furnace or water heater vent blows exhaust gas on to the air conditioner, a plastic cover can be used to shield the air conditioner from the corrosive exhaust gases.
  • Don’t cover heat pumps (these are not common in Minnesota).

General Exterior

  • Seal any gaps around the house; check for loose or dried out caulking around pipes, ducts, faucets, air conditioner refrigerant lines, etc.
  • Replace any damaged or worn weatherstripping around windows and doors.

Smoke / CO Alarms

  • Smoke alarms should be located inside every bedroom, and one in a common area on every level.
  • CO alarms should be located within ten feet of every sleeping room (and not in furnace rooms, kitchens, or garages).
  • Replace the batteries in your smoke alarms and carbon monoxide alarms and test them using the built-in test buttons.
  • Make sure your home is equipped with photoelectric smoke alarms.
  • Check the age of your smoke and CO alarms; smoke alarms are good for up to ten years, CO alarms are good for between five and ten years.  If they’re any older, replace them.

Furnace 

  • Have a professional furnace tune-up performed annually.  See Are Annual Furnace Inspections Really Necessary?
  • Replace the batteries in your thermostat.  If your thermostat fails while you're on vacation, you might come home to a nasty surprise.
  • Clean or replace the furnace filter - this should usually be done every one to three months, depending on the type of filter.  The arrow on the filter should point toward the furnace.

Fireplaces

  • Have the flues professionally cleaned on any wood burning fireplaces if they get used regularly.
  • Avoid burning any woods that are not hard and dry.
  • Clean the dust out of the bottoms of any gas fireplace inserts.
  • If you have a gas log installed in a wood burning fireplace with an adjustable damper, make sure there is a damper stop installed to prevent the damper from getting closed all the way.  See My Beef With Old Gas Log Fireplaces.

Last but not least, Duane says "Cuddle, stay warm, and safe sledding."

Author: Reuben SaltzmanStructure Tech Home Inspections

          

Why Home Inspectors Should Know Building Codes

Posted by: Reuben Saltzman Updated: September 22, 2014 - 5:18 AM

In last week's blog post, which I did not post here on the Star Tribune, I mentioned that there is an upcoming seminar for Minnesota home inspectors, being taught by building code guru Douglas Hansen of Code Check.  Minnesota currently uses the 2006 International Building Code (IRC), but we'll soon be adopting the 2012 IRC, and with that will come a lot of changes.  The upcoming seminar will cover the most important parts of these changes.

Side note: Why are we flying in a national code guru from California to teach this 8-hour seminar when the class has already been put together and is being taught by some extremely knowledgeable and capable building officials right here in Minnesota?
@#$!%* beaurocracy, plain and simple.  The folks that I've reached out to at the Minnesota Department of Labor and Industry have told me they're not allowed to do any teaching outside of the state curriculum because there's a conflict of interest.  I have no idea what the conflict could possibly be, and I'm not at all satisfied with that answer, but in the interest of getting this class put together and notifications sent out to MN home inspectors in a timely manner, I didn't fight the issue.  I'm not done with it though.

I sent out an email notification to all of the Minnesota ASHI members letting them know about this seminar, and I've been making phone calls as well to make sure that everyone got the word.

I had one conversation with another Minnesota home inspector, who I'll call Inspector X, that prompted me to write this post.  When I told Inspector X about the upcoming seminar that would be covering the code changes to the IRC, I said I considered this  seminar to be 'must-have' training for any home inspector in Minnesota.

Inspector X said he disagreed that this is must-have training, because he doesn't conduct code enforcement inspections in any capacity.  I didn't have time to engage at the moment, so I just told him he was right, home inspections are not the same as code enforcement inspections, but it's still important for us to be familiar with current building codes.  I couldn't get him to agree with that either, so I basically just wished him well... but if I had had the time, I would have explained it this way:

ASHI Home Inspection Standards of Practice require home inspectors to provide clients with a written report that states those systems and components inspected that, in the professional judgement of the inspector, are not functioning properly, significantly deficient, unsafe, or are near the end of their service lives.

Unsafe is defined as "A condition in a readily accessible, installed system or component that is judged by the inspector to be a significant risk of serious bodily injury during normal, day-to-day use; the risk may be due to damage, deterioration, improper installation, or a change in accepted residential construction practices."

Current building codes are what define accepted residential building practicesIf a home inspector is not familiar with current building codes, they're not familiar with accepted residential building practices.

Code Knowledge vs. Code Inspection

Even though home inspectors should be familiar with current building codes, this doesn't mean that home inspectors should report code violations.  Our standards of practice clearly state that home inspectors are NOT required to determine "compliance of systems and components with past and present requirements and guidelines (codes, regulations, laws, ordinances, specifications, installation and maintenance instructions, use and care guides, etc.).

If you want to know the difference between a code compliance inspection and a home inspection, look at the reasoning behind the recommendations for change / repair.  ASHI Standards of Practice require home inspectors to report the reasoning or explanation as to the nature of deficiencies reported that are not self-evident.  If the home inspector bases their reasoning on code, they're heading into 'code compliance inspection' territory.

As an example, take a look at the sump basket cover at this new-construction home; the cover isn't airtight, which will allow for moist air to enter the home.  This air may also bring radon gas into the home.

unsealed sump basket cover

Here's a bad way for a home inspector to report on this: "The sump basket cover was not airtight, which is required by Minnesota Administrative Rule 1322.2103, Section AF103.4.4.  Have this corrected."

The problem with this type of reporting is that it tells the client that this is a problem because the installation does not meet code... and that's about all.  It doesn't give the reasoning or explanation as to the nature of this deficiency.

The proper way for a home inspector to report this type of defect would be "The sump basket cover was not airtight, which will allow for air to leak into the building.  This air will have relatively high levels of moisture, and will contribute to radon gases coming into the home.  Have the sump basket cover made airtight."

See the difference?

If the home buyer addresses this issue with the builder and asks them to correct this, the builder might say it already passed inspection and meets code.  At that point, a home inspector who is familiar with building codes would be happy to give their client the above code reference, backing up their recommendation.  That's a good thing, and it doesn't mean the home inspector is doing a code compliance inspection.

Author: Reuben SaltzmanStructure Tech Home Inspections

          

Roof Replacement Part 1: Should Contractors Use GAF, Owens Corning, or IKO?

Posted by: Reuben Saltzman Updated: August 25, 2014 - 6:51 AM

This is a guest blog post by Ryan Carey, of My 3 Quotes.

3-Tab ShinglesLet's face it, it's no fun when you realize you need to fork out thousands of dollars for a new roof. If you're like many homeowners, you avoid it as long as you can despite all the tell-tale signs: You have more granules in your gutters than on your roof, you have old organic shingles that are curling up like diplomas on the south side of your house, or worse yet- there are several areas of your ceiling that are turning brown from leaks.

Despite your many attempts at doing hail dances around your house in the hopes that your insurance company may have to foot the bill, you are stuck with having to pay out of pocket since Mother Nature has not cooperated. Once that bitter pill is swallowed, its time to get serious and do some research on the best shingles and contractors out there.

This product comparison is going to be quite different from previous ones. In Window Replacement Part 3: Marvin, Andersen, Pella, I gave many pros and cons of the different window lines since they are all made differently. In Siding Replacement Wars, LP vs. James Hardie, I had a clear favorite between the two different products. However, when it comes to these three roofing product lines I can say the following statement that some of the manufacturers won't like to hear: It matters very little which one of these three you choose; picking the contractor is WAY more important.  If installed correctly, all of these products (including some brands I don't mention below) will have nearly identical performance.

3-tab to Architectural

Architectural ShinglesAsphalt roofing didn't have much variation in the past. Shingles were made in the 3-tab style, which is a flat shingle with 3 rectangles per piece.  Today, the vast majority of shingles are of the architectural variety. They have a cedar-shake look, with overlay pieces to give the shingle dimension and shadow lines. They are thicker and cover up roof line imperfections better. They also have longer warranties.

With the variation built into the product, architectural shingles are also easier to install.  With the symmetrical rectangles of 3-tab shingles, much more attention needs to be paid in placement on the roof before nailing.  3-tab has basically gone extinct for new roofing installs, since there is little to no difference in pricing anymore.  With over 90% of new roof installs going architectural, 3-tab has become a special order product and many contractors will do architectural for the same price.  Under those conditions, there is no reason to do 3-tab unless you are doing a partial roof or trying to match product on nearby structures.

Unfortunately, the warranties of architectural shingles have recently changed to make things more confusing to the customer. Each one of these brands used to have 30, 40, and 50 year shingles. 30 was the majority of what was used, but the customer could pay more for even thicker 40 or 50 year varieties with more material weight and more distinctive shadow lines.  Now, asphalt shingles will never last 50 years but at least you could see the "good, better, best" progression with the old system.

One of the companies got the bright idea to call their 30 yr a "lifetime shingle" to differentiate from the other manufacturers. That differentiation didn't last because the others quickly followed suit. So what changes were made to the old 30 yr to now be called "lifetime?" Absolutely nothing. The shingles may be shot in 20 years, but by that time the pro-rated value is pretty small. Shingle manufacturers also rely on the facts that homeowners stay in a house for 7 years on average, and "lifetime" is how long the homeowner lives there.  Severe weather events could cause the roof to get replaced over such a time period. Finally, if the homeowners actually get to 20-30 years, there's a good chance that they won't still have the original paperwork.  All these factors keep the lifetime warranty risk pretty low for the manufacturers.

Today, customers need to sift through all the product offerings to find the difference in thickness and weight.  30, 40, and 50 year was previously the guide to tell the difference.  With every architectural shingle now having a lifetime warranty, homeowners need to do a little more reading (or get some help from a rep) to find which ones are the premium thickness products.

GAF 

GAF Shingles

Speaking of warranties, GAF has most effectively worked their special warranties into the sales pitch. "Certified," "Master Elite," and "Golden Pledge" are a few of their extended warranty terms depending on what level the contractor is at in their system.  GAF is the most popular brand in town due to their well-known Timberline shingles. Timberline became the generic term for architectural shingles years back, and people ask for them by name quite often. "Do you have Timberlines?" sometimes means the same as "Do you have architectural shingles?"

They have other lines as well, all the way up to the super-thick "Grand Sequoia." GAF shingles have a great name, a great look, many color selections, and many extended warranty options.  GAF has very effectively embedded themselves with local contractors through their certification for different warranty options.

Owens Corning 

Owens Corning Shingles

One of the most well-known brand names around, Owens Corning continues to assert its presence in the fields of shingles, pink insulation, and large pink cats. Talk about an awesome branding strategy; I have the "Pink Panther" theme going through my head every time I talk about them.

While I'm not a fan of their entry level "Oakridge" architectural shingle (the overlays seem too thin, they don't look much thicker than a 3-tab shingle to me), I AM a big fan of their "Duration" series. Not only does this shingle look like an architectural is supposed to look, but it has a fabric stretched over the nailing strip which they call "Sure-Nail Technology." The strip helps prevent nail blow-through from installers and shows them the exact place to nail the shingle down, which helps to prevent improper nail placement.  O.C. has a variety of colors and thicknesses as well.

If you are a do-it-yourselfer (or if you're using an installer that you don't have 100% confidence in), Duration is the perfect shingle to use, as it is the only shingle that has that Sure-Nail strip for a guide.  4 nails per shingle will give you a 110mph wind warranty; 6 nails will get you up to 130mph.  Other brands have similar warranties, but the strip helps to assure the best placement for effectiveness of those levels.

IKO

IKO has a slightly different look than the others, as the overlays have a straight cut instead of a tapered cut. While they don't nearly have the brand recognition of the first two, they are a huge company worldwide. They boast more weight in their base-level lifetime product than the others and they have premium thickness products like "Armourshake." IKO Shingles

Customers of mine have been going to their "Cambridge IR" (impact resistance) shingle quite often, since it is the least expensive shingle I can find that carries a Class 4 hail rating. Most insurance companies will give you a break on your monthly premiums if you can show them Class 4 impact resistance paperwork.

Contractors

OK, all pretty darn good products here. However, if they are installed incorrectly, they have an increased potential for failure, which won't be covered under manufacturer warranty. Contractors can use nails that are too short or use nail guns that aren't set at the right pressure, resulting in nails not in far enough that eventually work their head through the overlaying shingle, or nails blowing through the shingle, leading to shingles coming loose. Valleys and flashing can be installed improperly, resulting in leaks. Kick-out flashing can be missed resulting in problems for other areas of your house. See Reuben's post on roofing installation issues.

Ventilation needs to be adequate as well to keep too much heat from building below the roof line and curling the shingles. Can you imagine a ridge vent getting installed and the installers forgetting to cut a channel in the roof decking so the vent could work? It's happened.

This is why it's so important to have a contractor with a good labor (workmanship) warranty, good reputation, and local longevity so you know you're covered if the failure is a result of faulty installation. Many contractors only have 1 year labor warranty and that's it. Now if the roof fails after one year and its because of improper installation, you're up asphalt creek without a paddle on getting any warranty help. Don't even get me started on out-of-state storm chasing contractors.

Labor Warranties

Many contractors have Lifetime Workmanship Warranties. Now, just like a lifetime shingle warranty, they know that lifetime will be the amount of time the homeowner lives there (average of 7 years), but at least you know you're covered while you're there. Also, if a contractor is sticking their neck out for any water damage that could occur from a leaky roof, you know darn well they will do everything they can to prevent the problems from starting. Water damage can get up to tens of thousands really quick from a bad roof leak.

These three brands are my favorite asphalt shingles to work with, and I haven't had problems with any of the three when they are installed correctly. Pick a solid contractor to do the job, and you'll be happy with any of them. Pick the wrong contractor, and they can all fail. We'll cover metal roofing options in a future post.

Ryan CareyRyan Carey has 15 years of experience in exterior remodeling for Twin Cities Homeowners and Property Management Companies. He is the owner of “My 3 Quotes,” a company that provides the free service of collecting 3 competitive home improvement bids for customers. For more information, visit www.getmy3quotes.com for free home improvement estimates on window replacement, siding, roofing, and more.  

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