Metal Siding Over Polyisocyanurate Foam Boards

Expanding polystryrene extruded polystryrene and polyisocyanurate.

Metal siding over polyisocyanurate foam boards.

Metal doors wood doors. The house has wrap under the siding. The house was build in the 19970 s 2 4 walls and pink insulation between the studs. Expanding polystryrene which is also called beadboard is a closed cell insulating board with an r value of 3 8 to 4 4 per inch.

My concern is attaching the metal to the roof without any decking directly below the metal. According to the best practices manual from james hardie existing siding can be used as a substrate as long as it is in good condition meaning that it is not warped. How to install rigid foam under siding. The windows are being removed and moved out the 2 to line up with the foam board.

Will this cause any condensation issues. Many houses built today have a double wall type of insulation with fiberglass batts fastened between the studs on the inside and rigid foam board over. R matte plus 3 thermasheath 3 is rigid foam plastic thermal insulation r matte plus 3 thermasheath 3 is rigid foam plastic thermal insulation board. It s made of environmentally sound closed cell polyisocyanurate foam bonded to a durable white matte non glare aluminum facer and a reflective reinforced aluminum facer.

Polyiso and other rigid foam insulation boards are low density products. There are three basic rigid foam insulation products you can choose from. However when thermasheath 3 was tested in a wood framed symmetrical wall specimen 5 8 fire code gypsum face layers thickness 4 with 2 thermasheath 3 in stud cavities to. I recently received a quote to install 3 polyiso foam lay ice and water shield over the entire roof and then install the berridge 24 gauge galvalume kynar 500 standing seam metal roof.

It provides an r value of 6 per inch of thickness and often comes foil faced to help reflect radiant heat. This is an even more dense and more expensive foam board insulation. Siding over rigid foam. They are not intended to be used as sound deadening or sound absorbing materials.

Polyiso comes in several thicknesses and is used over house sheathing underneath siding or in attic spaces where its reflective properties are.