craze cracking in asphalt shingles roofing

Mastering Roof Inspections: Asphalt Composition Shingles

Mastering Roof Inspections: Asphalt Composition Shingles, Part 32. Craze-cracking appears as random cracking in the shingle's weather surface. The shingle surface exposed to the weather loses volatiles more quickly than the interior parts of an asphalt shingle

Thermal Splitting or Cracking Asphalt Roof Shingles

The horizontal cracking occurring in these fiberglass-based asphalt shingles resulted in complete loss of some of the shingles from the roof surface. The silicone caulk was placed by the owner during an attempt to "re-glue" the lost shingle tabs.

Fiberglass Shingle Cracks Thermal Splitting Asphalt Shingle Crack & Tear Failures Described & Explained"Thermal splitting," or "cracking" which in fact is in most cases actually atearing of the shingles is considered by experts to be the principal cu...Horizontal Cracks & Splits in Asphalt ShinglesBoth thermal splitting and other shingle cracks and splits can also occur in a horizontal pattern as we illustrate in our photographs below.The h,What Is The Cause of Thermal Splitting Cracks in Fiberglass-Based Asphalt Roof Shingles?Our photos above demonstrate two classic thermal split patterns in fiberglass based asphalt shingles: vertical splits running straight up the roof...Splits Or Cracking in Organic Asphalt ShinglesOrganic mat asphalt shingles also may show cracking and accompanying granule loss. Defective asphalt shingle products of either organic or fibergla...Ask A Question Or Search InspectAPediaQuestions & answers about cracked or broken roof shingles & thermal splitting: cause, effects, remedy, warranty.Use the "Click to Show or Hide FAQs...

Shingle Damage Evaluation – Characteristics of Aging

Crazed cracking is the result of the normal deterioration of the asphalt coating of the shingles from aging over the years. When the asphalt material dries, shrinks, and weathers from normal exposure to water and sunlight it is randomly stretched. The random stretching of the asphalt causes it to crack

Craze cracking in asphalt shingles Roofing Inspections

Apr 24, 2019· As long as craze cracking is limited to the weather-facing surface layers of asphalt, the shingles will continue to protect the home from leakage-induced moisture intrusion. Once cracks develop into through-shingle splits, the roof is more likely to leak.

Craze-Cracking – InterNACHI Inspection Narrative Library

Craze cracking in asphalt shingles is random surface layer cracking. It's caused by forces similar to those that create shrinkage cracks in concrete and mud ; resistance to shrinkage. The mud version. Resistance to Shrinkage. Asphalt used in the manufacture of shingles has compounds that are designed to keep shingles waterproof and flexible.

Cracked shingles after 6 years Roofing Inspections

Apr 23, 2019· Craze cracking is a problem with differential shrinkage rates between asphalt at the surface and underlying asphalt and is not limited to CertainTeed shingles. It’s called "resistance to shrinkage, and it’s the same process that causes concrete to crack. The upper surface loses volatile compounds quickly and this is what causes shrinkage.

What Causes Hairline Roof Cracks or Crazing? | Yahoo Answers

Oct 29, 2009· After a home inspection, inspector found every shingle on roof had some hairline cracking. They are not deep and actually difficult to see. Roof is only 6 years old. The inspector is not sure of the cause, because this normally occurs from poor ventilation, yet

Status: Resolved

Mastering Roof Inspections: Asphalt Composition Shingles

Random surface cracking, called “craze-cracking," can expose more asphalt to UV radiation. In cold climates, the potential for damage is increased due to the expansion of moisture as it turns to ice. Craze-cracking will be covered in more detail in the articles to come. Thermal cycling can cause shingles to split. Splitting may be due to:

Cracked shingles after 6 years Roofing Inspections

Apr 23, 2019· Craze cracking is a problem with differential shrinkage rates between asphalt at the surface and underlying asphalt and is not limited to CertainTeed shingles. It’s called "resistance to shrinkage, and it’s the same process that causes concrete to crack.

6 Common Asphalt Shingle Issues You Have to Know

Dec 26, 2014· 6 Common Asphalt Shingle Issues You Have to Know About. Surface cracking, which doesn’t split the shingles completely, is part of the aging process. Cracking may also occur because of stress, shingle movement caused by high winds, and deck movement.

1. Material Concerns Homeowner’s Guide Cracking

accelerate the aging of the asphalt layers of the shingle. If not for the protective layer of colored granules, roofing shingles would fail very quickly. Other factors such as moisture, pollution and physical effects roof traffic, hail, snow loads, tree limbs, etc. all contribute to the aging and degradation of your roofing shingles.

InterNACHI Home Inspection Narrative Samples InterNACHI

This condition is called “craze cracking”. Craze-cracking is a natural response to long-term shrinkage of the shingle asphalt surface layer and is a common sign of aging. Although unsightly, this condition alone does not limit the ability of the shingles to shed water or shorten their long-term service life, and so

Thermal Cracking Asphalt Shingles

Thermal Cracking Asphalt Shingles. Different thickness of the organic variety which has becoming more about the ABC’s of roofing uses plywood or tongue and grooves created a thermal cracking asphalt shingles rapport brackets for the roof barrier placed under such roof is making sure you go shingles have been some doors.

Discontinued & Defective Shingles in Lexington KY

Craze and thermal cracking is when the volatiles in the compounds used to manufacture the shingles are heavily depleted and the rest of the shingle can no longer

The Adjuster's Forum: Cracks in Shingles

Cracking is definitely a mode of failure, however the time of occurance during the life span of the shingle determines if it is a premature or a natural demise. All of the defective shingles I have seen have been fiberglass and the cracking occurs somewhere between 9 and 12 years after installation.

Glossary of Terms | R&B Roofing

After long exposure, a fissure or fissure pattern appearing on the shingle or roofing due to weathering of the asphalt. Crazing: Surface deterioration of a shingle

Shingle Damage Evaluation – Characteristics of Aging

Embrittlement – Embrittlement is the hardening of the soft asphalt and the shingle mat materials over the years such that the shingle becomes brittle and is susceptible to shattering, cracking and breakage. Embrittlement occurs as a result of the normal aging and weathering of the shingles over the years; however, it is accelerated by the exposure of the shingle to excessive heat from a poorly ventilated attic.


Crazing. Crazing refers to random, intersecting cracks that extend below the surface of hardened concrete caused by shrinking of the drying surface. This happens because the surface is restrained by the concrete below it that isn’t experiencing shrinkage. Craze cracks can be fine and barely visible to open and well defined.

Asphalt Shingle Aging: Different Stages of Deterioration

“Craze-cracking,” the phenomenon where random surface cracks develop, will become more and more widespread. The thermal cycling is more of a concern at this stage when daily temperature swings are extreme. Over the service lives of asphalt roofing shingles, the volatiles, which keep them flexible enough to expand and contract, slowly...

Problems With TPO Roofing – Just The Facts

While the popularity of TPO single ply membranes is continuing to grow among homeowners and commercial builders, there are a number of problems with this material you should be aware of. Initially, TPO was created to compete with PVC. Its original intent was to be a cheap welded seams reinforced membrane, to dominate the commercial roofing market based on price, while offering all the benefits...

When we get your inquiries, we will send tailored catalogue, pricelist, delivery, payment terms and other required details to you by email within 12 hours.