Installing Foam Board Insulation Ceiling

How to install astroboard polystyrene foam board insulation.

Installing foam board insulation ceiling.

Foam blocks airflow needs no vapor barrier and has a higher r value per inch than loose fill. How to install astroboard polystyrene foam board insulation. Secondly and this is the best way you can install a drywall to frame the wall before applying foam board insulation. The air space will be continuous down to the soffit vents and.

Always cover the tops of the ceiling joists to make sure the insulation is deep enough to reach your target r value and to prevent thermal bridging the heat loss that occurs through the wood framing. R 13 1 polyiso rigid foam insulation board 613010 the home depot after installing and taping the r max board i managed to find blow in insulation the nice white cellulose type for 3 00 55 gallon bag. A brief snippet of how and why i used rigid foam insulation for some areas of the tiny house. Leave an air gap between the roof sheathing and the board.

Foam board insulation would be a more economical especially if you are supplying the labor see photo. Hire a pro to install spray foam insulation. It comes in standard size 4 8 sheets and smaller sizes in many different thicknesses from 1 4 inch to 2 inches. Spray foam is a very expensive option however.

The brand i used was r max thermasheath. Align the front of the board with the face of the rafter or joist. Some types of thicker foam board insulation are available but they may need to be special ordered. Foam board insulation is easy to use and is a great diy way to add some insulation.

Firstly you can apply it directly onto the house s concrete walls with the help of a construction adhesive that will hold it in place. Foam board the last option that i considered and the one i m using is foil faced polyiso insulation board. Foil faced iso board can be cost effective insulation for finished attics and cathedral ceilings. I m using 2 foam board 2 foil faced polyiso r value is approximately r14 fastened to the bottom of the 2 6 truss chord which leaves a nice 2 1 2 air space.

Press the cut insulation board to fit between the rafters or joists.