Does anyone have any particular recomendations regarding window and door framing/instalation when using spray-foam insulation such as Corbond. I have heard that swelling of the adjacent cavity can cause problems with door/window opperation. Assume walls to be 2×6 with two trimmers and at least one king depending on R.O.
The electrical hookup is only one part of the equation; when installing a hot tub, there are a number of key requirements to keep in mind.
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Wow! I can't believe noone has an opinion on this. Does'nt anyone have experience with spray foam insulation?!?!
scott... the framing doesn't change.. you use the same rough opening no matter what..
use the foam judiciously.. try the low -expansion types.. test operate the windows the next day , after all expansion has taken place... if you have to... you can cut some relief with a hand held sawzall blade or a drywall saw..
you can create the same problem by overstuffing fiberglass insulation into the space also...
and you can create the same problem by hour-glassing the jambs when you apply the interior casing..
care is the watchwordMike Smith Rhode Island : Design / Build / Repair / Restore
Thanks Mike, Subs will be applying the Corbond. I was just thinking that if I left the windows out, just viscreen the openings, then I wouldn't have to worry about squeezing my already shimmed installations. Since it is already full-on winter here, it would be nice to install the windows now and not have to worry about the insulating crew causing me more work in the future.
Around here, the Corbond goes into the frame against the exterior sheathing. The expansion happens towards the interior of the house. 2-3" is all that are needed so the 2x6 framing is redundant unless you are trying to keep space available to do wiring after the corbond.
The pressurizing at windows and doors happens from overfilling with full expansion foam. The Corbond guys do the windows and doors with a low expansion foam from guns, just like I would. They don't fill jamb shium spaces with the full expansion Corbond.
It is a great way to seal up your house. Go ahead and get the opennings filled and then let them in. Just be sure they know you are expecting low -exp in jamb spaces.
Actually, the foam works beeter when applied in interior temps over 45° so it is a good idea to have the place closed up whemn they insulate. I would have expected them to have answered these questions for you already. Have you talked directly to the corbond guys yet?
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Edited 11/16/2003 9:24:32 AM ET by piffin
Thanks Piffin, We have been scrambling around here in such a hurry that little time is left for casual conversation with subs, who also are in rush mode as winter sets in. Not any faster than saftey or quality dictates though. My questions are based on what little experience I, my crew, or anyone we have spoken with has. You have answered my questions completely and,as I had hoped, things go in the order that is most convenient. I had kind of figured that my issue would be dependent on the skill and experience of the Corbond installers. It's just a little hard to let go of control, espesially with a sub that I have no previous professional experience. I'll try to let go, trust to their professionalism, and do what I have to do should anything go awry.
Converse with them the details first, then let it go.
The guys here will use plastic to mask the windows/doors before spraying, then as partt of cleanup, one guy is scraping and cutting excessive fill and fl;oors while another is peeling plastic and spraying from cannister around windows.
Another crew could have a different procedure..
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