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Have a patio with metal roof, gets very hot during summer. Will Great Stuff insulate and stick to hot roof during summer? Thanks
I don't think Great Stuff foam insulation is meant to be applied in the manner in which you need. It is used to fill gaps and cracks, not be sprayed out in thin coats. whenever I've used it in the past, I found out it did not like to be spread out, or "worked".
The attic was converted into two rooms and I want to add insulation but the space between the ceiling of the rooms and the roof is about 5 inches? How should I do this?
There are closed-cell expanding foam insulation materials that can be installed through rather small holes in the ceiling. The advantage of this material is that it also serves as a vapor-barrier - a critical function in your case. Not cheap, but very effective. Make sure you install roof vents to prevent excessive heat from developing above the insulation - but with foam, this requirement is far less onerous than with blown in or batt insulation.
I have an apartment building that has mold in it. I'm trying to do everything I can to increase the airflow. Sure, the tenants might have to spend a mint on heat, but if it improved the air quality, maybe it would be a good idea.
mold needs moisture to start/grow. find out why there's moisture and fix that first. Just creating more air flow won't stop the mold from growing and it won't necessarily make the air quality better if mold is growing in the walls. since you said it was roof insulation, (I'm gonna assume you meant attic) check the roof for leaks. I wouldn't think you'd have to get rid of all the insulation but I'd definately get rid of anything moldy. Blown in isulation is fairly cheap to replace. Lowe's sells a mold test kit, not sure how it works but I saw them yesterday when I was in there. Might be worth looking into getting one.
Can I install rigid insulation between roof decking and shingles on a sloped roof?
Lot of info missing to give you a good answer. Thickness of insulation. Slope of roof. But what it really comes down to is the building code in your area, contact local building inspector,
What's better- to lay out roof insulation in an old house or to get it blown in?
anybody can do either.nothing to it.i prefer blown, because it isnt near as itchy.you can rent the blower from home stores, but it takes 2 people to run.
I have a converted loft which is really cold. The roof doesn't have any insulation, just a waterproof sheet, but i don't want to spend too much insulating it with the proper boards. If i use mineral wool and staple it across the roof trusses will it do a good job?
Yes, be sure to leave an air space between the top of the insulation and the roof deck to allow for ventilation, and use a vapor barrier on the interior side of the insulation.
were can i buy material to insulate pans and instructions to install it? I have seen many roofs with this done ,but , the lowe,s and home depots don't have .
metal pan usually refers to a pan that concrete is then poured into. If there is no concrete in it (and a flat membrane roof over that) then its called currogated metal roof. Either way they look the same. Hard to insulate cause they are not meant to insulate. there are some sold with insulation already attached - its a thin floam layer - thats a newer thing but not sure how new. heard of some mobile home mfgs and storage building builders using spray on insulation under the panels. As for aftermarket on insulating- you may be able to have spray on insulation applied from under neath - if the space is open and accessible. it looks and feels like foam, can get a bit messy , but maybe do-able depnding on your application. If its not a open space with maybe drywall under it - you might think about opening up the space in the ceiling and having blown in insulation done (much cheaper then sprayed on). Blown in will insulate just fine but someone would have to look at your application and area cause in some instances - blown in insulation can be bad for high moisture situations. also- if this happens to be in a house - by adding insulation to steel - you might be breaking fire code - something to keep in mind for safety.
what effect does changing the pitch of a roof have on the insulation properties and durability of a roof?
I'd have to agree with mj, your insulation in your ceiling is the major factor for heating and cooling , spec R-38 but if your going for gov. kick backs I think it's R-41 (17" of blown in fiberglass insulation). Roof pitch standard is 1' raise to 4' run, (really easy to re-roof & inexpencive). Advantages of a steep roof (less apt to have leakage problems with a worn roof, you get a few more yrs). When you have to replace that roof, price goes up for steepage.