I believe that one reason craze cracking happens is that the manufacturer uses excessive amounts of filler in order to cut costs. With less actual asphalt in the shingles, the effect of the loss of volatile compounds from what asphat there is is magnified and shrinkage is accelerated. Accelerated shrinkage means that tensile stresses develop more rapidly that are relieved by cracking.
What ever the case may be Kenton, they are not doing a proper job of quality control in my opinion.
35 years now and things have stayed the same.
1976 and still hearing the same customer complaints and the roofer carrying little after getting paid…
If it was cracked through the shingle, that roof was in a defective condition.
You know, I tried to nail down when to call something premature failure, meaning a defective condition, a manufacturer’s defect, and I spent a long time doing it, but even at the most professional levels, some of this stuff, unless it can be shown through expensive laboratory testing, some of which is prohibitive due to cost or manufacturer secrecy, is all opinion and quality of legal representation.
At one end of the scale, conditions are obvious to everyone, at the other end, it’s who sounds the most convincing, and there’s someplace in between where it shifts from unknown, to grey area, to slightly convincing to more convincing…
I spent a lot of time trying to figure out what to tell inspectors about comp shingles, and the more I learned… and I learned a lot… the less I realized I knew.
Most of us, like me early on, don’t even know what we don’t know. And when you want to find out what’s really true, it takes a long time and a lot of work.
I haven’t yet been able to finish the courses I did the research for, but this is a good forum for passing on that information.