How To Install Iso Board Under Siding

To secure the foam use two inch cap nails.

How to install iso board under siding. Some people use roofing nails but if a strong gust of wind gets under the siding it may not hold. 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. 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. The nails have a plastic cap that keeps them from damaging the foam.

Use nails long enough to. 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. 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. 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.

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. Fit the rigid foam insulation snugly and seal all seams with the specialized tape. Once the plywood is installed it s then time to install the siding over the top you can choose to use either vinyl or aluminum siding depending on the age style and look of your building.