loft insulation how many rolls do i need?

Question

90 square metres to cover how many rolls do i need 1200x3200x150 mm

Answer 1

22 rolls should be ample.

Answer 2

First go into the attic and look at the ceiling joists and measure the space between them. Then measure the length and count the number of spaces. Get enough insulation to fill in all of the spaces of the appropriate width. Be careful not to cover the vents in the eaves with insulation so that the attic still has good ventilation. Then as even more insulation I would suggest that you buy the widest insulation that you can get and go the other way and cover the insulation and ceiling joists with another layer of insulation. Most of the heat loss is through the wood. Again make sure that you do not cover the vents in the eaves. If you use fiberglass wear long sleeve shirt and maybe a mask to prevent inhalation of fiber. Get a good sharp carving knife and a board a little wider than the insulation and another board for a guide to cut the insulation. Be careful not to step through the ceiling. It is a quick trip to the floor.

Answer 3

22

Answer 4

Ask the salesman what r factor you need for your job. Why pay for 2 layers when a higher r factor will do the job.

Answer 5

hell go see how much a roll covers and do the math yourself or get them guys at home depot or lowes to do it

Answer 6

24

1.2 x 3.2=3.8m2

90m2 divided by 3.8 is 24. Approx.

The thickness of 150 makes no difference to this one!

Answer 7

25 to be on the safe side

Answer 8

Stay cold.

Answer 9

lofts and lofts and lofts