Below are some of the design details along with the benefits.
Installing siding over foam board.
This detail is used with both new construction and also with renovation work.
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.
Installing the siding may be the easy part.
To sum up if you want to install tar paper or a housewrap with foam sheathing install it under the foam sheathing but keep the air space between the siding and foam.
Installing rigid foam sheathing.
Use nails long enough to.
Trying to install siding over existing siding along with plastic sheeting requires a level surface.
Siding over rigid foam.
Measure and cut the foam board to match the exterior wall that needs to be covered.
Hardiplank lap siding can also be installed over foam insulation up to 1 thick irregularities in framing sheathing and or foam insulation can mirror through the finished application.
But the use of exterior foam on the outside of the building raises other concerns namely how to prevent the accumulation of water in the wall that would encourage mold and rot.
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When using foam insulation you ll need to decide whether you intend to use osb in addition to the rigid foam to serve as the building sheathing or if the rigid foam layer will itself serve as the sheathing and you ll need to determine what will serve as the drainage plane and where this layer will be.
Or directly to minimum 7 16 thick osb sheathing.
Hardiplank lap siding can be installed over braced wood or steel studs spaced a maximum of 24 o c.
Strapping screwed or nailed to the framing through the foam will keep everything in place and provide a rain screen to help the siding stay dry.
Use foam board rated for exterior use that is mold and mildew resistant as well as waterproof.
Place the foam board over the wall and screw in place.