Insulation, Radiant and Vapor Barriers - blown-in insulation easier to spread fire?
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aladinl
04-15-04, 05:28 PM
I am trying to put in some insulation for my garage ceiling. Someone has suggested to use the fiberglass insulation instead of the blown-in type as the blown-in type is easier to spread fire if there is a fire. Is this suggestion valid or just a myth?
In addition, there is already drywall on the ceiling but no access block for the attic. Anyone knows where I can get some good instructions on the web?
Thanks.
In addition, there is already drywall on the ceiling but no access block for the attic. Anyone knows where I can get some good instructions on the web?
Thanks.
Ed Imeduc
04-16-04, 11:34 AM
In addition, there is already drywall on the ceiling but no access block for the attic.
Do you just mean a hole to get up there????? You can just cut one there . Find the truss some where in the middle of it. If they are 24" on center cut from joist to joist should be about 22 1/2". Now cut down along each truss about 24" then cut across again. now you will have just about a square of drywall. Lay it up in the attic there.Now get some trim are a 1X4 and cut and nail this to the ceiling so you make the edge of it about a 1/2" in to cover the hole. now the piece of dry wall you cut out should just drop back down on to thei wood frame.
Insulation use the fiberglass insulation instead of the blown-in type as the blown-in type is easier to spread fire if there is a fire. Is this suggestion valid or just a myth?
Now fiberglass or cellulose will not burn at all. But try this if you like. take some fiberglass and put a small torch to it ----- It will just melt away and like let a fire through. Now take some cellulose we use to take it in our hand put a penney on top and melt the penny. It will turn black and get a glow like in it. But that is all. At the time we had pictures of homes that the whole roof burnt off the home and the fire stopped there at the ceiling line cause of the cellulose insulation.
ED;)
Do you just mean a hole to get up there????? You can just cut one there . Find the truss some where in the middle of it. If they are 24" on center cut from joist to joist should be about 22 1/2". Now cut down along each truss about 24" then cut across again. now you will have just about a square of drywall. Lay it up in the attic there.Now get some trim are a 1X4 and cut and nail this to the ceiling so you make the edge of it about a 1/2" in to cover the hole. now the piece of dry wall you cut out should just drop back down on to thei wood frame.
Insulation use the fiberglass insulation instead of the blown-in type as the blown-in type is easier to spread fire if there is a fire. Is this suggestion valid or just a myth?
Now fiberglass or cellulose will not burn at all. But try this if you like. take some fiberglass and put a small torch to it ----- It will just melt away and like let a fire through. Now take some cellulose we use to take it in our hand put a penney on top and melt the penny. It will turn black and get a glow like in it. But that is all. At the time we had pictures of homes that the whole roof burnt off the home and the fire stopped there at the ceiling line cause of the cellulose insulation.
ED;)
aladinl
04-19-04, 11:46 AM
Hi Ed. I followed your instructions to create the access block. I didn't use wood for the frame. Instead, I used a piece of drywall since I got some left over. It is not professional looking but it works. Many thanks.
Also thanks for the info on insulation.
Also thanks for the info on insulation.