Seal your attic.
Cheapest way to insulate an attic.
Plan to pull up the flooring and layer new insulation on top of the old.
Because the simplest and cheapest way to insulate an attic is to add material to the floor.
Im gona get round to do my instrcutable on cheapest insualtion ever.
Try these tips for a warmer winter.
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.
Plug your chimney when not in use.
Rigid foam sheeting has an r value ranging from r 5 to r 10 per inch of thickness.
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.
The most direct answer to your insulation question is fairly simple.
Add thick curtains to your windows.
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.
Cover any air leaks with weatherproofing.
R value refers to thermal resistance.
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.
We don t know what you have now r value or type.
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.
Cheap ways to insulate a building consider the r value.
Spray foam insulation seals leaks and gaps inside existing walls.
Blown in insulation is the least expensive option and ideal for older attics.
If your house has lots of air.
The cheapest method for a diyer is to roll out unfaced fiberglass insulation over any existing insulation.
After the foam is cured loose fill fiberglass or cellulose insulation gets installed on top of the foam.
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.
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.
A cost effective way to use foam insulation is to foam the lid of the house then use loose fill insulation on top.
This means installing spray foam to a depth of at least 2 on the entire attic floor to completely seal everything up.
Use weatherproofing strips and caulking to seal any air leaks in your doors and windows.
Department of energy recommends unfinished attics.
Fix drafty doors with a door snake.