rich121
08-23-2009, 10:52 PM
I have a 1930's 2 story, 2x4 stick frame house.
I have completely gutted the 1st floor rooms and I'm doing a complete remodel, rewire, and replumbing of the house.
It has an upstairs that has rooms and a bathroom, but no attic space, as the rooms are incorporated with the rooflines.
I don't have enough depth in the 2x4 walls or the 2x6 ceiling space for enough fiberglass insulation. I live in Eastern Washington State where it gets 100+ degrees in the Summer, and below zero in the Winter.
I need at least R-21 in the walls, and R-38 in the ceiling.
My plan is to "fir-out" the walls with 2"x3" lumber to make them 6" deep. I would like to use R-13 (3.5" deep) fiberglass in the outside (original) wall space, and use "R-Max, Thermasheild 3" (closed cell, polyisocyanurate foam bonded to reinforced aluminum foil facers on each side)on the most inner part of the wall, where the added 2x3 strips are.
I am only mixing because of the high cost of the foam panels.
For the ceiling, I would like to use (2) 2" and (1) 1" layer of the foam panel (R-6.5 per inch) this would give me a combined R-value of R-32.5.
I believe that using this foam board, I would also be sealing the house up much better than just using the fiberglass insulation.
I would like suggestions and thoughts from anyone experienced with this type of insulation, and what/how I should keep or change what I'm doing?
I have completely gutted the 1st floor rooms and I'm doing a complete remodel, rewire, and replumbing of the house.
It has an upstairs that has rooms and a bathroom, but no attic space, as the rooms are incorporated with the rooflines.
I don't have enough depth in the 2x4 walls or the 2x6 ceiling space for enough fiberglass insulation. I live in Eastern Washington State where it gets 100+ degrees in the Summer, and below zero in the Winter.
I need at least R-21 in the walls, and R-38 in the ceiling.
My plan is to "fir-out" the walls with 2"x3" lumber to make them 6" deep. I would like to use R-13 (3.5" deep) fiberglass in the outside (original) wall space, and use "R-Max, Thermasheild 3" (closed cell, polyisocyanurate foam bonded to reinforced aluminum foil facers on each side)on the most inner part of the wall, where the added 2x3 strips are.
I am only mixing because of the high cost of the foam panels.
For the ceiling, I would like to use (2) 2" and (1) 1" layer of the foam panel (R-6.5 per inch) this would give me a combined R-value of R-32.5.
I believe that using this foam board, I would also be sealing the house up much better than just using the fiberglass insulation.
I would like suggestions and thoughts from anyone experienced with this type of insulation, and what/how I should keep or change what I'm doing?