Can one place rigid foam over existing panel siding?
I recently purchased a '70s modified A-Frame cabin at Lake Tahoe w/ 2x4 framing.
The exterior walls are constructed with vertical 4x8 redwood panels directly nailed to the studs.
There is no insulation.
The interior walls are sheet rock covered with '70s simulated walnut paneling.
The windows are single pane sliding aluminum framed,
as are the two sliding glass deck doors.
The structure is 24' x36', 2br/2bath, loft...1200sqft.
The county building dept requires permits and retrofitting to replace siding to the studs.
The existing siding is sound but for a few small areas at the sill plate.
repair the damaged sill area siding.
Remove all existing exterior window and door frame molding.
Build out the window/door frame area 2.33 inches using 2x4 and plywood.
Cover existing siding with 2 "Rigid Foam Board.
Tape all joints
Cover rigid foam with James Hardie cement 'fiber board Sierra panels.
Replace single pane windows, sliding glass doors, with energy efficient dropins.
Again, this is a recreational cabin, not a full time family home.
Does this sound reasonable?
Input encouraged and welcomed.
Posted May 17, 2014 1:41 AM ET
Edited May 18, 2014 2:08 AM ET
Other Questions in Energy efficiency and durability
Will positive pressure work to vent an attic (i.e., blowing air in)? Attics exhaust fans are a bad idea. But what about blowing air in (using positive pressure).