Question? Just ask us!
Free Encyclopedia of Building & Environmental Inspection, Testing, Diagnosis, Repair
InspectAPedia ® Home
ROOFING INSPECTION & REPAIR
AMERICAN CEMWOOD ROOFING
BEST ROOFING PRACTICES
BUILT UP ROOFS
CATHEDRAL CEILING VENTILATION
CERTIFICATIONS for ROOFING CONTRACTORS
CHIMNEY FLASHING Mistakes & Leaks
COLD WEATHER ROOF TROUBLE
DECKS, ROOFTOP CONSTRUCTION
EPDM, RUBBER, PVC ROOFING
EXTRACTIVE BLEEDING on SHINGLES
FIRE RETARDANT PLYWOOD
FLASHING on BUILDINGS
FLAT ROOF MOISTURE & CONDENSATION
Green House or Solarium Roof Leaks
HEAT TAPES & CABLES for ROOF ICE DAMS
ROOF ICE DAM LEAKS
MASONITE WOODRUF FIBERBOARD ROOFING
NOISE CONTROL for ROOFS
PLASTIC ROOFING TYPES
PVC, EPDM, RUBBER ROOFING
ROOF ARCHITECTURAL STYLES - PHOTO GUIDE
ROOF CLEANING RECOMMENDATIONS
ROOF COLOR RECOMMENDATIONS
ROOF INSPECTION SAFETY & LIMITS
ROOF LEAK DIAGNOSIS & REPAIR
ROOF NOISE TRANSMISSION
ROOF REPLACEMENT SNAFUs
ROOFING FELT UNDERLAYMENT REQUIREMENTS
ROOFING MATERIALS, Age, Types
SADDLE CONSTRUCTION at CHIMNEYS
SNOW GUARDS & SNOW BRAKES
STANDARDS for ROOFING
STRESS SKIN INSULATED PANELS
TEST LABS - ROOF SHINGLE
TREES & SHRUBS, TRIM OFF BUILDING
TRUSSES, Floor & Roof
UNDERLAYMENT REQUIREMENTS on ROOFS
VENTILATION in BUILDINGS
WALK-ON ROOF SURFACES
WARRANTIES for ROOF SHINGLES
WORKMANSHIP & ROOF DAMAGE
Asphalt roof shingle failure guilde: this article series tells readers how to identify & explain the most-common asphalt roof shingle failures and how to obtain asphalt roofing shingle failure claims assistance. Common asphalt shingle failure factors include improper storage and handling of the asphalt shingles before installation, improper nailing, improper flashing (which pertains to any roofing material), and defective asphalt shingle product material leading to thermal splitting, cracking, blistering, staining, and in some cases curling or cupping shingles.
Green links show where you are. © Copyright 2014 InspectApedia.com, All Rights Reserved.
Storm damage from wind and hail occur and need to be distinguished from defective asphalt shingle product or asphalt shingle installation errors. Cupping and curling due to age can be distinguished from "fishmouthing" (shown in the photo above) caused by inadequate attic venting and building moisture.
Readers are also invited contribute roof failure information to the web author for research purposes. web author for research purposes.
In general, roof "failures" or complaints separate first into these general categories:
Photo Guide to the Differences Among Asphalt Shingle Cupping, Curling, & Fishmouthing
Are these shingles curled, cupped, fishmouthed, or a combination of all three? By my [DF] definitions of these shingle failure and wear patterns, the shingles below are curled - the tab corners are "up". Indeed viewed obliquely (below right) one might mistake this for a "fishmouth" pattern but it's not.
Below left to right: cupped shingles, curled shingles, fishmouthed shingles. [Click to enlarge any image]
Watch out: as you can see at our third photo at above right, these defects may occur together on a roof. To the right of the chimney we see fishmouthing as well as some shingle cupping. Surely this is a fragile roof. Stay off.
Asphalt Shingle Failure Types List
In the More Reading list below we list detailed articles describing just about every type of asphalt shingle roof failure articles:
Green link shows where you are in this article series.
Frequently Asked Questions (FAQs) About Asphalt Roof Shingle Failures
Question: My Cracked Roof Shingles are a Product Defect but No One Told Me When I Was Buying the House
I purchased a home in Jan. of 2010. The home was inspected by a licensed inspector prior to the purchase.
I recently had a roofing contractor come out to look at an issue I have with some siding. From the ground, the roofer noticed that the shingles were part of the GAF class action lawsuit from 1999. He got up on the roof and confirmed his suspicions. He also took photos of cracked and damaged shingles.
[Our photo at left of thermal splitting on an asphalt shingle roof is an example but it is not the very roof discussed in this question - DF]
I got some information about the roof from my realtor. The roof was replaced in the early part of 1999 with those GAF shingles. The house was sold in December of 1999.
I'm thinking that the class action/recall information never made it to the new owners or they chose to ignore it. Either way, we have a badly damaged roof, our inspector failed to note any of it, and 11+ years have passed since the class action lawsuit.
I am in the process of trying to file a claim with GAF, but I'm afraid that at best, I'll get a pro-rated amount (obviously just a fraction of an entire new roof).
My question is: do I have any recourse against the previous homeowner? the inspector?
I'm at a loss, so any ideas would be very helpful. Thanks very much - J.M.
Reply: How Do We Decide If a Home Defect Should Have Been (Could have Been) Disclosed?
First, you should obtain an accurate assessment of the roof condition, it's estimated remaining life, and whether or not the damage you report is significant - in writing, by a neutral professional. At CRACKS in FIBERGLASS SHINGLES we discuss asphalt shingle cracking and product failures that indeed were known to be happening around the time you bought the home.
While we still see an occasional asphalt shingle roof with thermal splitting (the cracks in the article we cite above), most of those roofs have been replaced by now.
If when you bought your home in 2010 its roof was covered by asphalt shingles that were 15 years or so old, and more if the shingles were visibly cracked or damaged, the inspector might have warned you that there was little or no reliable roof life remaining, independent of the product failure question.
You might have legal recourse over a home inspection adequacy or an owner or realtor disclosure issue, but that's a legal question to take to an attorney familiar with real estate law.
The attorney will want to review your contracts and any other documents presented at the time you purchased the home.
In our OPINION, IF there was visible evidence of a significant defect or dangerous condition at the time of your home inspection, the inspector should have told you about it.
Watch out: if conditions prevented the home inspector from direct access onto the roof or at least a look from a ladder set against the roof edge, shingle damage, cracks, and splits such as that shown in own photo (above left) could have been difficult or even impossible to spot. Inspecting the roof from the ground, even with good binoculars, can't show all roof damage types and conditions.
And keep in mind that there are good reasons that an inspector is never required to walk on a roof surface, such as accessibility, safety hazards and/or fragile roof conditions.
The asphalt shingle crack shown at left is located in the upper portion of an asphalt roof shingle, visible at the cutout between shingle tabs of the shingle course overlaying the split shingle. This crack would be just about impossible to see without a very careful on-roof inspection.
Additional on-roof photos of some hard-to-see shingle cracking problems are at CRACKS in FIBERGLASS SHINGLE.
In our OPINON, if you can show that the prior seller knew about the condition, s/he may have been obligated by real estate fraud law to tell you about it; though in some states the seller can pay a modest fee - in NY it's $500 - in exchange for being allowed to disclaim any representations about the condition of the home at the time of purchase. So particularly when such a disclaimer is going to be made, a thorough home inspection by a competent home inspector, and by one who has absolutely no conflicts of interest, is essential to protect both buyer and seller from a future dispute.
Questions and answers about roof shingle failures, roof condition disclosure to buyers, recourse.
Use the "Click to Show or Hide FAQs" link just above to see recently-posted questions, comments, replies, try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly.
Search the InspectApedia website
HTML Comment Box is loading comments...
Technical Reviewers & References