If your attic is not too cramped consider adding strapping onto the rafter bottoms and wall studs to allow for more insulation up to the recommended minimum level for attic insulation if possible.
Minimum attic insulation alberta.
The following table provides minimum estimates of how much money you can expect to get back in rebates your.
R value is a measure of insulation s ability to resist heat traveling through it.
The table below shows what levels of insulation are cost effective for different climates and locations in the home.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
If you think you re among the 90 of us homes that are under insulated 1 performing a simple insulation inspection will help you determine your insulation needs.
Pa302 1 ceilings with attic spaces n1102 2 1 r402 2 1.
This measurement is described as r value.
The effectiveness of insulation is measured in relation to its thermal resistance which is a way of saying how much conductive heat flow the product stops from going through it.
Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.
The higher the r value the better the thermal performance of the insulation.
Watch attic insulation energy efficiency alberta video on youtube.
The average recommended level is 17 inches of r60.
The 2015 irc requires r 49 insulation for ceilings with attic spaces.
After installing insulation in the existing cavities nail or screw strapping 2 x 2 or 2 x 3 on edge perpendicular to the rafters and studs.
Energy efficiency alberta s rebates are available for insulation added to a home s attic main walls exposed floors in basement and pony walls.
The recommended r value for attic insulation in ontario is between.
However there is an exception.
For diy attic insulation you ve got two choices.
Once you ve decided which type is best for you examine the material options and prices to home in on the right product.
Loose fill or batt the common term for blanket insulation.
Having the correct amount of attic insulation can help you maintain a comfortable temperature throughout your home and help save money on your energy bills plus prevent major issues like ice dams in the winter.
Both can be added to uninsulated attics or layered over existing material.
You will probably want to check the local codes before you build as the details of the national energy code or some modification of this may be the law in your municipality with specific insulation requirements for each part of your house.
In zone 7 the average minimum requirement for attic insulation is 14 inches of r49 fill.
Generally speaking a higher r value means better insulating properties.
R 38 shall be deemed to satisfy the requirement for r 49 wherever the full height of uncompressed r 38 insulation extends over the wall top plate at the eaves.
