Question 1

Anyone know whether this insulation is good for soundproofing?

Accepted Answer

This is heat insulation material. You need specific product such as :- http://www.wickes.co.uk/Knauf-Sound-Panel-Tapered-Edge-2400x1200x12-5mm/p/224657

Question 2

Can this item be used on a garage ceiling?

Accepted Answer

YES CUT JUST UNDERSIZE FILL GAPS WITH EXPANDING FOAM FILLER TO SECURE

Question 3

if this is placed onto cement floor, how much self levelling compound should go on top before tiling?

Accepted Answer

I myself would not use self leveling on top of Xtra  therm cement i  would rather use interlocking chipboard 3/4 inch thick, my floor with tiles has not moved at all in 10 years

Question 4

can it be used for loft conversion, before the boards go on, instead of the foil to the timber ?

Accepted Answer

Insulation between the rafters* For optimum thermal performance the unprinted foil surface should face the rafter air cavity.* Accurately measure the width to be filled between the inside face of the rafters, prior to cutting the board.* Use the Celotex Insulation Saw to cut the Celotex board at a slight angle, making the board width slightly oversized on onesurface to achieve a `friction it'.* Push the board into the void between the rafters until it is tight against the underside of the first layer of insulation.* To hold the boards in place, use battens along the side of the rafters.* Tightly fit the insulation to the ridge plate and carry over and tightly butt the wall plate at eaves.* A vapour control layer (VCL) should be installed to the underside of the rafters. A polythene sheet of higher vapour resistance isrecommended for high humidity areas such as kitchens or bathrooms.* Finish with plasterboard or other suitable sheet material, fixed to the rafters.

ASIN	B00CPBDZV8
Brand	Xtratherm
Coverage	28,800 square centimeters
Customer Reviews	4.6 4.6 out of 5 stars (19)
Item Dimensions L x W	2.4L x 1.2W metres
Item Thickness	50 Millimetres
Manufacturer	Xtratherm or Celotex
Material	Polyisocyanurate
Recommended Uses For Product	roof insulation, wall insulation, floor insulation
UPC	799493546309

50mm High Performance Polyisocyanurate Foam Insulating Sheet for Floor or Roof

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