Spray Foam & Chopped Glass

Not a great idea to attempt to stop movement at this demising wall but this is an unusual situation.

Just starting this 250,000 sq. ft. Euless, Tx. project, calling for 1" 3.0 closed cell Permax/Henry foam topped with 9&3 Koldking 100 chopped glass emulsion and 1.5 gallons Kold King 300 aluminized emulsion.

http://www.youtube.com/edit?o=U&video_id=4TkosISEsms&feature=vm

We also install chopped fiberglass over spf and have found it to be a good match

Old School Said: Unless you got on the roof and cut a swatch and measured it you would not know. The same with the other coatings. Like I say, cheaters will cheat. go figure.

Down here in hail country they would know. I just worked a claim wih an adjuster and roof consultant in Austin recently. The consultant checked our chopped glass emulsion in several areas and judged it to be 6-9 gallons and the aluminum 1.5 gallons. Exactly on mfg spec. And trust me, he wasn't on my side of the deal.

But you are right, I bid against a guy on some county roofs a few months ago. The roofer, whom I know very well, wrote the foam spec to include 3 gallons of Gaco Polyurea coating. When I talked to the Gaco rep he wondered why he spec'd 3, when Gaco only calls for 2. Connecting the dots, the roofer knew the building owners would not know he used only 2, and he'd get a $38/SQR advantage by making everyone else price for 3 gallons.

Course his house of cards will come crashing own when some consultant finds he's been installing less than quoting.

Unless you got on the roof and cut a swatch and measured it you would not know. The same with the other coatings. Like I say, cheaters will cheat. go figure.

Old School Said: I am sure you would get the same results using only 1/3 as much emulsion and glass too. If someone wants to cheat, they will.

Way fewer roofers doing chopped glass, so not as much of an issue. It would be especially hard for us to get away with it because I use the 72 dry mil thickness as a major selling point. It's prominent in our specs.

I am sure you would get the same results using only 1/3 as much emulsion and glass too. If someone wants to cheat, they will.

Mike H Said: Ya know Tim, our biggest problem with the foam was always the top coat... or specifically, polyurea coatings. The pinholing that occurred was a constant battle, and one that we sometimes could not win.

I can see melding of these two systems being quite successful.

Whod uh ever thunk that Tom and Tim were really just one letter away from perfect harmony? LOL

:cheer: Yeah, Tom and me on the same song book. :-)

We did our first SPF with chopped glass emulsion job in 1986. We subbed out the foam part of it. It worked great. I recently went round and round with some foam guys on a foam forum because they said we should never do it because it hasn't been tested and approved by the Spray Foam Alliance guys. I told them my reasoning was that it's been done enough to know that it far outlasts and acrylic coating, so why do we need to test to find out exactly how long it lasts?

Emulsion is essentially inert and no reaction would be expected.

I found out later that a lot of CA contractors are doing the combo.

I think one of the reasons for poor performance of acrylic coatings is that the building owner has no clue if the contractor applied the specified 3 gallons per SQR or 1. One gallon won't last and it's easily damaged by hail.

Ya know Tim, our biggest problem with the foam was always the top coat... or specifically, polyurea coatings. The pinholing that occurred was a constant battle, and one that we sometimes could not win.

I can see melding of these two systems being quite successful.

Who'd uh ever thunk that Tom and Tim were really just one letter away from perfect harmony? LOL

Still not working for me. I opened it in a different browser to make sure.

flatbed Said: Links not working.

2500sq.....*whistle*. Thats a lot of roofin.

It's set Public so you should be able to see it.

Link's not working.

2500sq.....*whistle*. Thats a lot of roofin.