Is an exterior curtain wall retrofit more plausible than removing clapboard siding & installing ply sheathing before rigid foam installation?
The curtain wall retrofit would include placing 2X4's vertically against the clapboard siding spaced 24" on center; then filling the 3.5" cavities with spray foam or cotton batts, followed by installing two layers of 2" polyiso rigid foam panels over. Finally, replace the vinyl siding over the rigid foam.
Posted Fri, 09/13/2013 - 10:21
Other Questions in Green building techniques