flat roof - slope for run off
 

just wondered what sort of slope to put on a flat roof over
new kitchen/living room and how to achieve this (assuming here
that you cut say 3x2 down so that one end is higher than the other,
then fix this to the roofing joists).

Whats the correct way of doing this please.

Also need some info on the type of insulation to use (is it best to use
the ply sheets that have insulation attached to them)?

i know there are bound to be a few threads that ask why not make it
a pitched roof - thing is it fits in with the design we want to achieve
plus at 4m wide, a pitched roof would be far too high to get above
a 14 degree slope.

suggestions please

dunc

flat roof - slope for run off
 

Our extension was done like that - looked like bits of 6x4 or similar,
nailed to top of joists to give a slight slope for the roof-boards.
Something like about 6 inches in 12 feet was the slope. The wood was
delivered ready cut, so if you ask at the wood yard, they might provide a
cutting service ...
hth
Neil
"duncan" wrote in message
...
just wondered what sort of slope to put on a flat roof over
new kitchen/living room and how to achieve this (assuming here
that you cut say 3x2 down so that one end is higher than the other,
then fix this to the roofing joists).

Whats the correct way of doing this please.

Also need some info on the type of insulation to use (is it best to use
the ply sheets that have insulation attached to them)?

i know there are bound to be a few threads that ask why not make it
a pitched roof - thing is it fits in with the design we want to achieve
plus at 4m wide, a pitched roof would be far too high to get above
a 14 degree slope.

suggestions please

dunc

flat roof - slope for run off
 

You buy tilting fillets from your timber merchant give them the width and
they will cut them for you
simply nail on top of joists to provide fall

"duncan" wrote in message
...
just wondered what sort of slope to put on a flat roof over
new kitchen/living room and how to achieve this (assuming here
that you cut say 3x2 down so that one end is higher than the other,
then fix this to the roofing joists).

Whats the correct way of doing this please.

Also need some info on the type of insulation to use (is it best to use
the ply sheets that have insulation attached to them)?

i know there are bound to be a few threads that ask why not make it
a pitched roof - thing is it fits in with the design we want to achieve
plus at 4m wide, a pitched roof would be far too high to get above
a 14 degree slope.

suggestions please

dunc

flat roof - slope for run off
 

"Neil" wrote in message ...
Our extension was done like that - looked like bits of 6x4 or similar,
nailed to top of joists to give a slight slope for the roof-boards.
Something like about 6 inches in 12 feet was the slope. The wood was
delivered ready cut, so if you ask at the wood yard, they might provide a
cutting service ...
hth
Neil

I'm just trying to remember if it is a slope of 1 in 400 or what. It's
4 mil in a meter level out of level so what is that?

I think it is the same as the bubble touching one of the lines. The
strips are called firring pieces. I never did hear why. It beats me
why we can't just angle the joists.