Q:what's the best insulation for ceilling for house with semi flat roof?

The pitch of your roof has nothing to do with the kind of insulation you should use. I recommend a fiberglass insulation that is at least 6 inches thick, the more you put in the better.

Q:I live in the top most floor of a flat. Is it worth to insulate the roof (from inside) with styrofoam(thermocole) to reduce the airconditioning load. Is it really economical with respect to cost of insulation and savings gained? Any experiences?

You want to insulate at the ceiling joist level, not at the roof-rafter level and provide ventilation for the remaining cavity. You also want to make sure you have the correct vapor barrier. But you do not want to insulate directly below and contacting the roof deck. One of the difficulties with rigid insulation is making it fit correctly and without gaps. So be careful of that. You may have to supplement the rigid sheets with foam spray at the gaps, around wires and pipes and so forth.

Q:Does snow on the roof help or hurt my heating bill?

Yes, it does. It also shows that you are not losing heat and that you are well insulated.

Q:If I insulate my roof, should I put in those plastic vents that go between the studs for air flow? I would like to use it for a work shop and probibly have some kind of heat source. i live in Northern Alberta.....

Insulate the ceiling, not the roof. Place the vapor barrier (foil or heavy paper) facing the garage. For Alberta you want at least R-30, or 9" of fiberglass insulation. The garage should already have eave vents, hold the insulation away about a foot from them so the insulation does not block the air flow from them.

Q:I would like to find foam type tiles for my roof of decking, insulation?

www.okorder I checked the website I posted by searching 'foam roofing' on google. This link is what I found but there are others... Google it to find your best deal. I think I will spray this stuff under my pier and beam home just to insulate. Thanks for the tip! I can buy this product, apply it myself and cut the cost down to 1/3 or more.

Q:I'm thinking of converting my brick walled corrugated iron shed into a changing room for winter hot tub use. I was advised by a friend that the first thing i should do is insulate the roof using glass fibre insulation (the yellow fluffy stuff in the loft) and a simple Plywood ceiling but im not sure how i would stick it to the existing roof (dimensions 170cm x 147cm). So..... how should i insulate the roof of my future changing room????

If the roof has joists, which I imagine it would, you would put the bats of insulation into those spaces... these can then be stapled into place or if that isn't possible, you can run a wire between the joists to hold the bats in place. If using faced insulation be sure to put the paper side towards the warm area (inside) to prevent condensation.

Q:Help please, this home had a water pipe from meter brake in the basement as it was unoccupied/empty, the owner/builder replaced all the drywall, insulation, flooring, carpet, tile, roof, windows, hot water tank, furnace, bathroom and kitchen cabinets, new paint on all, basement ceiling was spray painted black (to hide something or to seal it?). the neighbor says the home was gutted and mold tested three times, its completely redone basically a new home inside, feedback please, it "looks" great

Hi there. I suggest that you require a home inspection, a mold test and termiite treatment before buying the house. If it was tested, the seller should be able to provide the results. Anytime that there is severe water damage, mold and termite issues usually follow. It is better to be sure that everything is okay before you buy the house.

Q:I have read in some articles about roofing that it is recommended to use attic roof insulation in ones roofing. Is this true?

It's advisable to insulate the roof area attic to help keep the rooms below warm as heat escapes through the ceilings, but not so much if there is insulation in the attic! It's personal preference. Cheers

Q:attic is 400 sq ft.there are 4 round 6'' Vents in soffit,and 2 roof vents-12"x12".Rock wool,blown in,R/30 NO VAPOR BARRIER.Why the mold?no gable or ridge vent either.How do i fix this?There are baffles in attic,rafters are not blocked.

Are your bathroom exhaust fans blowing straight into the attic, maybe? Or your dryer vent?

Q:I already have fiberglass in the attic, but would like to add more.

Blown in is easier, cheaper and can be a DIY project. Just make sure you don't block the soffitts that allow air to circulate.