First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation.
Insulation on attic roof.
Insulating in and around your roof attic space also prevents long term damage from moisture build up or ice damming which results from the warm air trying to escape through the apex of the roof but instead heating up the snow.
Loft insulation is effective for at least 40 years and it should pay for itself many times over.
The higher the r value the better the thermal performance of the insulation.
This insulation strategy has not changed in recent code iterations and is not discussed in this article.
Installing attic roof insulation instead of attic floor insulation has several benefits.
Insulating your loft attic or flat roof is a simple and effective way to reduce heat loss and reduce your heating bills.
A quarter of heat is lost through the roof in an uninsulated home.
The ideal attic insulation r value is different than the ideal wall insulation r value.
How to insulate a finished attic.
New rules and practical interpretation.
With a finished attic insulation must help keep the attic areas comfortable.
Additionally insulation serves as a way to enhance sound proofing on the uppermost envelop of your house.
R value is a measure of insulation s ability to resist heat traveling through it.
Insulation ratings can be improved by adding more layers of insulation.
That means insulating the attic floor only not the walls and having vents in the roof.
Achieving greater r values in attics.
Make sure your home is properly insulated in all these locations.
Inspecting your attic insulation.
It can be installed in one of two places.
It is important to note when insulation is on the floor of the attic the space between the insulation and the roof deck must be vented to the exterior.
The technically correct approach depends on a number of factors.
Box out light fixtures.
Water is insulation s enemy.
Attic insulation plays a critical role any home s overall comfort and energy efficiency.
The table below shows what levels of insulation are cost effective for different climates and locations in the home.
A finished attic should be insulated much like the rest of the house with insulation in the walls and ceiling.
Insulation on the floor of the attic figure 1.
Insulation level are specified by r value.
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.
On the attic floor or beneath the attic roof.
You can mix the type and material of insulation too.
Whether or not there is an inner roof lining and the total thickness of the roof structure.
