Mortimer Brewster wrote:
You might not have much access. My trailer had 1 inch of styrofoam sanchwiched between exterior and interior pieces of 1/8" luan board. If the separation is between the styrofoam and luan you could always drill a hole down into the styrofoam from above in order to get the sealant to the void. Then clamp. I'd be leery of using expandable foam as it might blow out the wall.
Well, if there really is a styrofoam somewhere in the front wall it's really not "sandwiched" because if I press anywhere on the wall with my hand (it's not a new behavior, it's the same since I purchase it brand new), the luan is moving very freely, that's why I was thinking the wall use fiberglass insulation or is just empty! I agree that the expandable foam need to be used carefully, but are you aware you can purchase a specific low-expansion foam which is intended for use in enclosed spaces? I agree that the traditional expansion foam would be very dangerous to use since it's strong enough to lift a concrete floor!
Thanks for your advices!
