(Think before foam)Spray foam and Asphalt shingles don’t mix, Spray foam Asphalt shingle killer!

You should have a conversation with spray jones.... he goes into the science of why spray foam is not the killer of shingles. Literally goes over a bunch of study’s and research that’s been done

ive been roofing for over 20 years, the only thing i seen was a bunch of cheap 3 tab 15 year shingles that in high temp zones tend to fail in less than ten years. Put a quality 20 - 30 shingle in that deck problem solved.

This is interesting. Thank you for sharing your observation. I just did 50-year shingles over a sips roof. Hope it lives long!

Paid for spray foam insulation and got bullshit 3 tab shingles. Buy the good ones.

I like the recauk/adhesive fix. Basically glue the loose shingles down

Thanks! Never even thought about the type of insulation being used and it's effect on the roof tiles. ❤🎉

Thanks for the info.

please consider reading building science research, these situations have been researched and litigated over and over plenty of science on proper application and use of foam insulation

This guy needs to explore spray foam on the roof deck vs. Attic floor and vent vs unvented. Current studies show roof deck spray foam in an unvented sealed attic has very little effect on heat gain on the roof. Shingle color and roof exposure are much more important.

Thanks for this video. As you said, no one else is saying this.

You said, you have a problem with foam spray insulation. There is study at Illinois State University that is difference of temperature between ventilation roof and non ventilated is 0,7 celsius. So guys read more before doing anything. Peace

What about using a spray foam just for the roof decking? (attic still uses venting, and blown in insulation... spray foam used as a way to mitigate roof deck rot).

I believe you. My house is only ten years old, and my roof failed from granule loss before any of my neighbors. You could see the fiberglas edges of the shingles within the first five years of ownership. I just couldn't wrap my head around why. Same builder, same shingles, same age. Only after I started learning about the effects of spray foam on shingle life did I realize that my house was originally supposed to be a one story with a large attic, however the builder built a bonus room with lofted ceilings in the attic space essentially closing the vast majority of the attic off with no airflow under that large section of roof. Mystery solved. I do believe that spray from, with a dehumidifier under a metal roof would be awesome for energy efficiency.

I like to see actul temperatures difference on shingles.

Have architectural singles on my garage roof-40 years. Still looks good but getting brittle and few have 1/2 blown off. Think they are a 240lb asphalt

This is not so much against foam insulation then it is against asphalt shingles. I’ve done a few asphalt roofs in my life and a few steel. A steel roof is so much more superior and sustainable. Ive noticed ww2 hangers made 80 years ago that are still dry and in great condition with the original steel roofing in Washington state where it rains forever.

Your argument would seem plausible if every tab was curled, but it’s just the bottom left corner of the left tab. I suggest that they’re junk shingles 😎

Whoever roofed that house that's falling apart installed it wrong. I'm looking at keyways that aren't halfway across the tab below it - it's like an inch from the keyway below it, and they creep - it's almost like they tried to install it like a dimensional. If they got it THAT wrong, there's bound to be tons of other faults with the installation. It probably leaked from day 1, but nobody knew because that spray foam held the water there. That decking is gonna be gone soon enough ...

Thank you for this video. I was roofing for over 11 years. I tell builders and spray foam installers the same exact thing you showed here and they always tell me I am wrong. I tell them they make foam baffles, staple them between the rafters and then spray over that to have an air space. First the shingles get baked on then the plywood goes fast! Trying to pry plywood off spray foam is a bear! Thanks again.

There are cheap shingles and there are expensive shingles, That's why you need a metal roof