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Does Wood Rot Under Vinyl Siding?

White colonial home protected with house wrap for vinyl siding in a New England neighborhood

Wood can rot under vinyl siding when moisture gets trapped under the panels. This is most common without a proper weather-resistant barrier installed beneath the panels. Vinyl siding is not waterproof on its own. Wind-driven rain can work its way behind vinyl siding and reach the wood beneath. A breathable house wrap is the critical layer that protects your sheathing from moisture damage and hidden rot.

Does siding help insulate a house?

White colonial home protected with house wrap for vinyl siding in a New England neighborhood

The right siding does help insulate a house. This is especially true of foam-back options with built-in rigid insulation, installed by Coastal Windows & Exteriors.