Loose fill blown in insulation is best for tight spaces or if your attic already has a layer of insulation.
Insulation recommendations for attic.
Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer.
Insulation ratings can be improved by adding more layers of insulation.
The recommended r value for attic insulation in ontario is between r 50 and r 60.
You can mix the type and material of insulation too.
First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation.
Unlike fiberglass insulation.
Make sure your home is properly insulated in all these locations.
R values of common types of insulation.
See the department of energy s doe ranges for recommended levels of insulation below.
Loose fill cellulose insulation is composed of pulverized paper and fabric material treated with a flame retardant.
Insulation level are specified by r value.
See install batt and roll insulation for details.
Batt and roll insulation works well between joist and stud spaces or if you have a wide open space or a crawlspace.
The higher the r value the better the thermal performance of the insulation.
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.
The main factors that impact the cost are.
Recommended inches of cellulose attic insulation.
Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live.
Achieving greater r values in attics.
So it s time to pay close attention to what s happening up there.
R value is a measure of insulation s ability to resist heat traveling through it.
There are two main types of insulation.
Type and material of your insulation.
Bulky materials resist conductive and to a lesser degree convective heat flow in a building cavity.
Inspecting your attic insulation.
Rigid foam boards trap air or another gas to resist conductive heat flow.
The ideal attic insulation r value is different than the ideal wall insulation r value.
The r value of the insulation for every inch of thickness depends on the type of insulation.
Contractor or insulation installer s fee.
Insulation materials run the gamut from bulky fiber materials such as fiberglass rock and slag wool cellulose and natural fibers to rigid foam boards to sleek foils.
According to home advisor insulating your attic can cost between 1700 to 2100.
Recommended home insulation r values.