Blowing insulation into walls is best left to the pros because it involves drilling into stud spaces that may contain electrical.
How to amp up attic insulation depth.
Mary previously had 100mm of fibreglass insulation in her attic but decided to upgrade the insulation in her attic to the required 300mm following consultation with the seai and various contractors.
Insulation level are specified by r value.
Pricing can vary based on thickness and material but it s generally 0 15 to 0 50 cents per square foot.
Attic hatch or door.
Add weatherstripping around the perimeter and a sweep to the door of a walk up attic.
You can expect an r value of 3 1 to 3 8 per inch.
Pull down stair or ladder.
R value is a measure of insulation s ability to resist heat traveling through it.
Handy homeowners can install blown in insulation in the attic.
For loose fill cellulose this translates to a total depth ranging from 8 inches.
The table below shows what levels of insulation are cost effective for different climates and locations in the home.
Affix rigid foam insulation to the attic side of the hatch or door.
The higher the r value the better the thermal performance of the insulation.
When insulating check to make sure that your insulation fits snug to the boards and joists for optimal energy efficiency.
Use a zippered insulated tent to keep the enclosure draft free attic tent at 7 attic cover insulator 120.
Inspecting your attic insulation.
First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation.
Just lay the new batting right on top of your current between joist batting.
Attic insulation using fiberglass mary has a four bedroom detached house 150m2 in size.
In temperate coastal areas such as zone 3 attic insulation of at least r30 up to a maximum of r60 is recommended.