Hi, we have just decided to install some insulation board and push it up
between the roof joists. It's a 1936 built house in north London u.k. [with
thanks to those who advised on this in a previous post] . The 'management'
in our family now have put in a request for it to be it to be 'smartened up'
What I am now looking for is some thin type material that is easily cut so
that we can staple it to the roof joists to form in effect; what is a 'white
ceiling' for the loft (to cover up the joists and the insulation board
installed between them). It doesn't need to have any insulation properties.
It is just to 'smarten-up' the place a bit. We dont want to use plaster
board since it would be too much work to cut up, and the relatively small
use of the loft does'nt warrant it.
We are thinking of something like a very thin white plastic sheet (obviously
polystrene would be a bit too fragile). Hopefull it will be very thin so
that we that we could cut it up with scissors or a knife. Can anyone advise
us on some material suitable, please. Many thanks.
Have you already stuffed the joist-bays with insulation? If not,
You should investigate Homasote and similar compound building
panels that combine insulation and fire-resistant surfaces in
one panel. (Which would go across the joists, instead of between
If you *HAVE* put the insulation in already, then
sheetrock/plaster board really is your best bet. It's
not as hard to work with as you apparently think it is, especially
if you cut it into manageable sizes before moving it.
If you have a neurosis about the rock panels, then you could
use something like Sunforger Marine Canvas (Which is
available in the US in 100-yard rolls from ITEX/BANWEAR)
It's fire and mildew-resistant, which doesn't mean it
won't mold and burn, just that it's not quite as eager to
do so as regular canvas. I suspect it's some sort of
boric acid treatment. The canvas won't meet code,
but it's better than either exposed insulation or
stapling up old refridgerator boxes.
If you're cheap, and don't care about either meeting
code or burning yourself to death, use white muslin,
after giving it your own boric-acid/borac bath in your
tub. or using a commercial fire-retardant on it.
Found quite a few references in a google search of Homasote in model railway
enthusiasists newsgroups who use it as a 'base' board for train tracks in
outside garden sheds. There is a lot of talk about it being prone to
movement in changing humidity and also it can sag if joists are more than 16
inches apart. Guess this might mean I have to keep looking. Or any further
Homasote is a company that makes a number of products, mostly out
of recycled cellulose. What you're probably reading about is
their grey fiberboard, which is used under floors and behind sheetrock
for insulation and sound-control. They've got a whole catalog's
worth of stuff at
SOMETHING in there ought to work.
Failing that, you might look at structural insulated panels
(SIP) which are a sandwich of fiber-board and foam
insulation. As much of a pain to work with as sheetrock,
but again, insulating and surface at the same time.
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