Fanfold Behind Siding

Also it is a vapor barrior on boyh sides of the board.

Fanfold behind siding.

The products are easy to handle score cut and install and no special tools are needed. This creates a horizontal seam every 4 feet. Fanfold foam residing board. Fanfold board is worth the cost and effort to install behind vinyl siding.

I have not seen any studies that show how well tape adheres to foam over the long haul. Fan fold is typically sold in 1 4 inch by 4 foot by 50 foot sections and is installed horizontally across the existing siding to level out irregularities before re siding with vinyl. It also helps with wind infiltration through the walls. It also helps to level the walls so you get a better smoother siding job.

Fanfold foam residing board is a thin perforated extruded polystyrene foam board faced on one side with a plastic film facer and combines proven xps foam technology with a unique design to enhance the application of new or replacement siding. If you have ever seen vinyl siding and the laps looked dirty all the time this is caused by heat buildup between the siding and the wall this heat excapes through the laps and causes stain. Considering how effective house wrap is and how simple it is to install behind vinyl it is a good idea to ensure your contractor includes it when siding your home. Exterior insulation is a foam like layer that is applied under the new siding.

It also serves as an air barrier. The q series products have an extruded polystyrene foam xps core with high impact polystyrene capsheets on both sides which make it one of the most durable products currently available. Foam insulation is often referred to as fanfold. While fan fold has minimal insulation value it does even out wall defects and cuts down on drafts.

Fan fold comes in foam sheets and is nailed directly to the sheathing. Like bob said it helps with sound insulation. Foamular extruded polystyrene xps rigid foam insulation offers a comprehensive line of products in a wide choice of sizes thicknesses and edges with a lifetime limited warranty for the life of the home or building. When every penny counts you can rely on the performance of our most economical fanfold siding underlayment.

Generally the thicker the foam the greater the insulator. Also during this siding process you may also consider asking your contractor to add foam insulation between the vinyl and the house wrap for increased r value. 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. Fanfold foam residing board product data sheet pdf 783 kb.

Generally referred to as rigid foam insulation this type of foam insulation is also called foam board foam plastic insulated.