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Scarfing a vertical exterior wall Post New Topic | Post Reply

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Posted: Jun 20, 2009 07:59 PM
Scarfing a vertical exterior wall
HI guys

Not sure where this one belongs.

I have a metal building that had its exterior walls foamed 10 or so years ago. The customer let the coating go and the foam has been exposed to UV Rays for quite some time.

I would definately prefer to scarf, but not quite sure how I would do this on a 20' X 200' vertical wall. I also thought that I could wire brush to knock of the burnt foam and then prime, spray and then re-coat.

Does anyone have any other suggestions before I start this job next week?

Dennis Davidson
Posted: Jun 22, 2009 10:51 AM
I the foam isn't to far gone, we've pressure washed to remove loose coating and foam. Let it dry for a few days then apply a heavy mastic coating to fill holes and re-coat the whole thing. We have also pressure washed, primed and install 1 1/2" foam in two layers. First layer fills holes pretty well, second layer will make it look a little better. We've done old foam tanks like this too!

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