Insulation Boards For Attic Floor

If using a top layer of insulated loft floor boards aim for a base layer as close as possible to an r value of 2 25.

Insulation boards for attic floor.

Standard joist spacing for the installation of attic flooring materials is 16 inches on center oc meaning the distance from the center of one joist to the center of the next joist is 16 inches. Osb attic decking has a convenient tongue and groove design for easy installation. Kingspan insulation r 3 common. Plan to pull up the flooring and layer new insulation on top of the old.

R value is a measure of insulation s ability to resist heat traveling through it. On top of this the boards will provide additional insulation to bring the combined total up to the equivalent r value of 6 1. Insulation level are specified by r value. The table below shows what levels of insulation are cost effective for different climates and locations in the home.

The superattic system utilizes proprietary silverglo rigid foam insulation panels to fully seal and insulate the attic directly beneath the roof rafters and directly inside the gable ends. But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates. But insulating your floors is a good idea for many reasons including energy efficiency and height adjustments. Working with home insulation boards insulation panels typically come in 4x8 foot sheets.

Stop using your attic for storage. Board insulation coms in a variety of sizes and can be used for walls floors ceilings and low slope roofs but it s best for floors and walls. Smaller sizes are also available. Start with the attic floor.

Enjoy a clean look and increase the usable square footage of your attic by multiples of 8 sq. The higher the r value the better the thermal performance of the insulation. For new construction use rigid boards to insulate slabs and the outside of foundation walls. Most people do not think about insulating their floors unless perhaps it s their attic floor.

How to calculate the required thickness of loft floor insulation. Because the simplest and cheapest way to insulate an attic is to add material to the floor. 0 56 in x 4 ft x 8 ft 1 unfaced polystyrene foam board insulation item 511270 model 100000050497. Install them using panel adhesive or screws.

They re much lighter and easier to work with than plywood sheets. Foam board insulation is used on attics and walls yet it can also be used to insulate your floors. Since foam board is more flammable than other insulation types you must cover it with inch gypsum board or other code approved material for fire safety. The superattic system from dr.