Attaching Siding To Rigid Insulation

An architect in the rocky mountain west puzzles over details on a house that is to have an exterior layer of rigid foam insulation and board and batten siding.

Attaching siding to rigid insulation.

In a typical situation. Use a premade kit for this type of project. By installing rigid foam board insulation on the exterior walls you ll need to pay special attention to the details. Wood siding including cedar siding should be installed over an air space regardless of the type of sheathing used.

It adds up to a. The object is to build in energy efficiency at a reasonable cost and stop thermal bridging as well as find the best means of attaching the siding to the house. Keep in mind that any interior rigid insulating panel must be covered by a barrier. One new wrinkle for many builders is walls built with fiber insulation between the studs plus rigid foam insulation applied over the outside walls.

Siding over rigid foam. Industry trend to using exterior rigid insulation increased thermal value condensation resistance increased air tightness possibly. His solution seems to be that people should be focusing on first anchoring the furring strip through the rigid insulation and sheathing into the stud with one nail and then using a much shorter nail or screw to attach the cladding to the furring strip. Of 3 to 3 5 which limits insulation thicknesses to 1 5 max 3 5 fastener to siding 1 embedment 3 5 0 5 1 5 1 5 max.

Follow with a 2x4 frame wall and insulate it with batt insulation. With foam sheathing an air space is essential both to reduce the siding s water uptake and to provide a. Attach the tongue and groove insulation boards to the concrete wall with adhesive. How difficult is it to attach siding trim and windows to a house that has 2 of rigid foam insulation on the outside.

What are the risks of installing cedar siding directly over foil faced rigid foam insulation should tar paper or housewrap be used as well. That would require a nail between 4 6 depending on the thickness of the rigid insulation. You ll need longer nails for nailing trim and siding. Some people recommend a layer of furring on the outside of the foam it that adequate to hold siding on.

You ll need to properly flash window and door openings. Attach cladding over exterior insulation table r704 3. Almost any type of siding can be installed over the rigid foam cedar or redwood planks exterior plywood sheets cement fiber board or vinyl siding are common options.