Foam Insulation On Siding With Nail Strips

This article discusses the causes and cure of wood siding failures including when siding is installed over rigid foam insulation how to prevent siding cupping siding nail pops siding splitting siding separation or misalignment at butt joints and other wood clapboard and hardboard siding failures.

Foam insulation on siding with nail strips.

Wood siding failure diagnosis for siding installed over foam insulation. The studs conduct more heat than the insulation between them. Installing foam board insulation under vinyl siding today more than ever before homes are being built with foam board insulation installed on the outside of the sheathing and under the siding. Insulated foam sheets are also used as an insulated sheathing underlayment for exterior siding.

Of course i did this all knowing my warranty would be void. This eliminates thermal bridging which is the energy lost through wall studs. Below are some of the design details along with the benefits. Given the beefiness of their headlok fasteners i m going to say that one end of that spectrum is serious overkill vs the other.

Lp siding with fern strips over insulation. 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. Gypsum sheathing with a combined thickness up to 4 inches thick the foam sheathing and other non nailable substrates do not have nail holding capacity. Their table suggests that vinyl attached to furring strips over 1 of foam is the same as cementious siding over 4 of foam.

This detail is used with both new construction and also with renovation work. When applying james hardie siding to furring strips which is applied on foam sheathing or other non nailable substrates e g.