- Posts 9
Last Activity:05-13-2008 8:29 AM
Posted in thread: Insulate open rafter roof on 11-29-2007 at 04:29 PM
Busyflyin, you will then have an under-insulated and non-ventilated cathedral ceiling roof.
Snow on top of the roof will melt due to the heat loss from the roof, run to the eaves and
freeze, forming i...
Posted in thread: Insulate open rafter roof on 11-28-2007 at 08:11 PM
Busyflyin, we're not talking the same thing. First of all, a SIP panel does not give you
anywhere near the R38-R40 of insulation you need in your roof system. So if you install a SIP
panel over vertic...
Posted in thread: Insulate open rafter roof on 11-27-2007 at 06:18 PM
The code for minimum air channel is 2 inches. So by putting 2 inch vertical battens, you
satisfy that requirement. However, don't forget that the purpose of ventilation is 1) to
dissipate residual hea...
Posted in thread: Insulate open rafter roof on 11-27-2007 at 08:38 AM
Busyflyin, you have a beautiful cottage. If that was my place, I'd fill in the space between
the rafters with blue styrofoam (5 1/2" should give you about R25-R30), install a vapour
barrier across the...
Posted in thread: Insulate open rafter roof on 11-22-2007 at 06:26 PM
glennjanie, the reason I didn't mention the method is because it wouldn't actually deal with
the issues that I brought up in my post. Yes it can be done, but it won't provide adequate
insulation, nor ...
Posted in thread: Insulate open rafter roof on 11-22-2007 at 09:17 AM
You probably need R38 or R40 for your ceiling/roof. Depending on what kind of foam insulation
you install, you get anywhere from R2 to R6 per inch. Fiberglas bats are usually around R3-R4.
So your fir...
Posted in thread: Plywood siding - 2nd story on 11-19-2007 at 03:24 PM
Ken, rent some scaffolding, and get yourself a helper. Moving plywood by yourself on one ladder
is suicide. Gravity can be so unforgiving. With a properly installed scaffold, you have a safe
Posted in thread: total replacement of roof.... on 11-17-2007 at 05:54 PM
If there's an opening cut through the roof (vent, pipe stack, etc.), the cut is usually square,
and it's possible to measure the thickness of an exposed edge. Saw your photo, and the decking
Posted in thread: total replacement of roof.... on 11-16-2007 at 07:45 PM
It's probably getting late in the season, and don't know if you have already commited yourself,
but...It's not clear to me what kind of sheathing you have on your roof. Is it OSB or plywood,