Best Insulation To Put Under Vinyl Siding

Furring strips furring strips may be necessary if you are installing vinyl siding over existing wood siding or stucco.

Best insulation to put under vinyl siding.

Insulated vinyl siding is standard vinyl siding with a backing of solid rigid foam insulation. By filling the voids behind the siding s stepped profile the insulation makes the complete material stiffer and more resistant to warping and movement than conventional vinyl siding. And even though some manufacturers call it rigid foam insulation for the purpose of vinyl siding it basically has the same insulating value as a piece of plywood. Contoured insulation not only insulates the home but also provides support to the siding panel helping to maintain the just installed look for years to come.

While fan fold has minimal insulation value it does even out wall defects and cuts down on drafts. Wall 1 insulated with only r 19 wall 2 insulated with high density spray foam at a nominal 4 inches in the cavity for a cavity r value of 24 wall 3 r 19 in the cavity plus r6 1 foam board under the vinyl. Measure the walls from top to bottom with a tape measure and buy either 4 by 8 foot or 4 by 9 foot sheets of rigid foam insulation to cover from the roof line of the house to the sill plate at. Plan to use rigid foam with silver facing underneath vinyl siding.

Installing vinyl siding with plywood substrate. This detail is used with both new construction and also with renovation work. Installing foam insulation under vinyl siding is a wise choice for homeowners who are seeking to protect their homes against moisture infiltration as well as improve energy efficiency. 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.

It also serves as an air barrier. Would like to add some type of insulation on the exterior walls. But insulated vinyl siding has one unique feature. From a previous post i was told fanfold insualtion was only necessary if the substrate was uneven.