To secure the foam use two inch cap nails.
How to install iso board under siding.
It s not nearly as vapor permeable as rock wool but it s still well over 1 perm it s semi permeable and plenty of drying capacity for anything but chronic gross bulk water leakage from mis.
Always choose isoboard board lengths to run from wall to wall.
Secure the board positively using screws and adhesive to fix to perimeter brandering on the board s ends and concealed fastening clips and adhesive to fix the board to the central brandering.
He stated no further insulation under the shake since i do have insulation under the bead board and the concern is what i ve read above about condensation.
With foil faced iso on the interior you could still use up to 2 of unfaced type i or type ii eps under the siding without creating a moisture trap.
The nails have a plastic cap that keeps them from damaging the foam.
Just want to make sure the job is being done correct i don t want to find out in hindsight that a 1 4 or 1 2 inch of rigid foam board should have been put under the vinyl shake.
In this example we show z flashing below the first course of siding and we show perforated board wrapped with insect screening to allow air entry at the base of the wall.
Use nails long enough to.
The siding and insulation offer a well insulated home.
Wrap the house with a moisture barrier usually some type of polystyrene wrap and install desired siding by nailing through the foam board into the house framing.