Rigid Foam Insulation Over Wood Siding

It adds up to a robust system.

Rigid foam insulation over wood siding. Last year i installed lp lap smart trim shingles and the 4x8 sheets of lp with batts all over 3 of continous xps foam using fern strips. Siding over rigid foam. Rigid foam over building wrap. How to install rigid foam under siding.

Plus rigid foam insulation applied over the outside walls. This is especially true if the wall is filled with fiberglass batt insulation. With foam sheathing an air space is essential both to reduce the siding s water uptake and to provide a. Some people use roofing nails but if a strong gust of wind gets under the siding it may not hold.

He would like to keep it on and simply put the new rigid insulation over the siding. When installing wood siding over rigid foam sheathing you must protect the siding from moisture and heat buildup and use proper nailing. We have a historic house that is undergoing a deep energy retrofit with rigid insulation being applied to the outside and then strapping and new siding. Fit the rigid foam insulation snugly and seal all.

To secure the foam use two inch cap nails. It seems this will create some nice air pockets which be. How should wood siding be installed over rigid foam insulation. Lp siding with fern strips over insulation.

Gypsum sheathing up to 1 inch thick the foam sheathing and other non nailable substrates do not have nail holding capacity. When applying james hardie siding directly over the combined thickness of foam sheathing continuous insulation and other non nailable substrates e g. Always follow the manufacturer s instructions for installing rigid foam insulation. Readers are constantly asking if the rigid insulation is supposed to be installed over the building wrap or vice versa.

The contractor has ripped off a few layers of asphalt siding and is now down to the original siding. Well call me half hazard. The nails have a plastic cap that keeps them from damaging the foam. Cover the house walls with 4 by 8 foot sheets of rigid foam insulation typically 1 2 to 1 inch thick nailed to wood sheathing with 1 1 2 inch broad headed galvanized nails every 16 to 18 inches.

Moisture protection and heat buildup. 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. What are the risks of installing cedar siding directly over foil faced rigid foam insulation should tar paper or housewrap be used as well. Is replacing wood siding with vinyl and.

Wood siding including cedar siding should be installed over an air space regardless of the type of sheathing used. Of course i did this all knowing my warranty would be void.