"Dave" wrote in message
...
"JoeSpareBedroom" wrote:

"Dave" wrote in message
. ..
I am renovating a room with a concrete ceiling. Previous ceiling (wood
paneling)
had been removed. The concrete ceiling is a bit uneven and requires
smoothing
which I'd rather not do.

I am thinking of paneling the ceiling with styrofoam sheet about two
inches
thick. I 've got some good quality styrofoam (smooth - not grainy) I
coul
just
glue there.

My question is about the lights. I haven't yet selected any lights but
other
rooms have recessed halogens lights eyebulb style.

Halogens tend to get hot and styrofoam could melt . How much room should
I
cut
for the 50w lights? (a ball park estimate)

Time out! Let's see if I'm understanding you correctly: You're going to
glue
styrofoam directly onto the ceiling, and then install recessed lights?
How?
In what hollow space?


I get your point and understand that there must be some space left between
the
sheets and the recessed lights. That should still lead to warmth buildup.
I must
need a hollow space between ceiling and the styrofoam.

Like I said I am asking for advice.

OK. Here's your advice: You are NOT going to install styrofoam in your
house. Do you understand?