But a 2x6 rafter with a 1 5 vent space would give you the ability to put 4 of rigid insulation r 26 in that space which was not filled.
Rigid foam insulation attic floor.
In other words rigid foam can be applied on walls foundations and roofs and works great for both retrofits and new constructions.
First the bays between the joists were filled with fiberglass insulation.
Most people do not think about insulating their floors unless perhaps it s their attic floor.
Then 2 rigid foam insulation was placed on top of the floor joists followed by plywood flooring.
It s worth changing tactics to insulate between the rafters and wall joists instead of the floor.
The superattic system from dr.
Generally on the floor of an attic we have lots of room for thick insulation so something cheap and fluffy goes there.
This foam board insulation is available with straight or tongue and groove edges to help limit air movement.
Think of the same example of a wall and attaching drywall with the tons of screws.
Energy saver eliminates the need to remove attic flooring and lose valuable attic storage space in order to make major energy saving upgrades in the attic.
Affix rigid foam insulation to the attic side of the hatch or door.
Foam board insulation in the attic can cut down on energy costs and simultaneously promote a more environmentally sound way of daily living.
2 would be to create the baffle in the 1st place.
Foam board insulation is used on attics and walls yet it can also be used to insulate your floors.
From an economic point of view foam insulation is the most expensive form of insulation r.
It is denser than eps and provides more r value with a rating of 5 per inch of thickness.
The products are easy to handle score cut and install and no special tools are needed.
The superattic system utilizes proprietary silverglo rigid foam insulation panels to fully seal and insulate the attic directly beneath the roof.
Not only does it provide high r values but foam board insulation is also easy to install lightweight and can be used in any room of your home.
Foam is a good choice where you need to get a lot of r value in a small space r inches.
This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses.
It seems to me that the rigid foam should have more bearing surface than the 1 5 afforded by the floor joists.
Installing foam insulation boards in the attic is no that hard and can save you money compared with professional installation.
Foamular extruded polystyrene xps rigid foam insulation offers 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.
Add weatherstripping around the perimeter and a sweep to the door of a walk up attic.
The 4 of rigid foam under the rafters at least give you r26.
Attic hatch or door.
I saw an episode of this old house recently where tom silva was insulating an attic floor.
