Ceiling Roof Insulation Foam

Foam board insulation would be a more economical especially if you are supplying the labor see photo.
Ceiling roof insulation foam. It can act as an air and moisture barrier in addition to providing very high r value. You can even place it under the foundation slab. Spray foam is a very expensive option however. They keep your home at a comfortable temperature without the need to crank your heat.
Technically known as spray polyurethane foam or spf spray foam is most commonly applied in the space between attic rafters. You can install spray foam on the underside of the roof sheathing to create an unvented conditioned attic. Dow froth pak 620 sealant foam insulation kit. Even though your attic is large this makes sense because you don t want to install your ducts or hvac equipment outdoors.
Install it anywhere from the roof to the foundation. Better materials for attic roof insulation are rigid foam boards and spray foam insulation. If you decided to use a rigid foam board to help insulate your cathedral ceiling you would install the board on top of the roof sheathing and underneath the plywood at the top of the roof. Image courtesy of d7 spray foam insulation houston tx.
Rigid foam insulation also known as insulating boards provide high r values. Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces. Foam board insulation is easy to use and is a great diy way to add some insulation. In most cases however insulation will not help prevent moisture problems.
Some types of thicker foam board insulation are available but they may need to be special ordered. Find ceiling foam board insulation at lowe s today. Rigid foam board installation in the case of a cathedral ceiling involves installing three different layers that are each 1 5 inches thick according to the procedure discussed in this article appearing in fine homebuilding. It comes in standard size 4 8 sheets and smaller sizes in many different thicknesses from 1 4 inch to 2 inches.
Depending on where you live and the part of your home you re insulating walls crawlspace attic etc you ll need a different r value. A very energy efficient enclosure results.