Cheapest Way To Insulate An Attic

Spray foam insulation seals leaks and gaps inside existing walls.

Cheapest way to insulate an attic. Fiberglass roll insulation fiberglass roll insulation is the cheapest and easiest type to install provided that your garage s interior walls have not been constructed. Cover any air leaks with weatherproofing. Fix drafty doors with a door snake. Seal your attic.

R value refers to thermal resistance. If your house has lots of air. It can cost anywhere from 1 700 to 2 100 or between 1 50 and 3 50 per foot to insulate an attic depending on what insulation material you choose. Department of energy recommends unfinished attics.

Your goal should be to have insulation equaling an r value of 40 or above on top of the ceiling of the second floor. Rigid foam sheeting has an r value ranging from r 5 to r 10 per inch of thickness. The most direct answer to your insulation question is fairly simple. To get the most r value with the least thickness use batt insulation with higher r value per inch in combination with rigid foam insulation.

Cellulose insulation is a recycled loose fill insulation that can be blown into walls and attics making it the ideal choice for garages that have been finished. That way theres no issue with weight and the bagsd are free and not going to waste on a dumping ground this owrks by trapping air inside the bags and insulates the loft. Cheap ways to insulate a building consider the r value. All you need to do is collect plastic bags rather than throwing them away and scrunch them up a little and put them between the joists then put a flat piece of plywood over them as a floor.

Spray foam while the most expensive is best for noise reduction and new construction. 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. This means installing spray foam to a depth of at least 2 on the entire attic floor to completely seal everything up. Plan to pull up the flooring and layer new insulation on top of the old.

Blown in insulation is the least expensive option and ideal for older attics. After the foam is cured loose fill fiberglass or cellulose insulation gets installed on top of the foam. A cost effective way to use foam insulation is to foam the lid of the house then use loose fill insulation on top. Because the simplest and cheapest way to insulate an attic is to add material to the floor.

Try these tips for a warmer winter. Plug your chimney when not in use. The absolute best way to insulate an attic is to begin with a continuous vapour barrier of super 6 poly stapled to the underside of your ceiling joists then start with r 30 fiberglass or roxul batts laid on top of the vapour barrier and between the joists fitting them snugly but being careful not to compress. We don t know what you have now r value or type.

The cheapest method for a diyer is to roll out unfaced fiberglass insulation over any existing insulation.