On Jul 3, 8:21*pm, Ron wrote:
On Jul 3, 7:20*pm, Evan wrote:



On Jul 3, 7:09*pm, Zz Yzx wrote:

My shop has a steel roll-up "garage" door that faces a blistering sun
for several hrs/day. *I'm determined to insulate it. *The easiest way
I see is to slap some styrofoam shhet insulation onto it. *

I can get 4' X 8' sheets at Big-Box for a good-enouhg price, but need
to trim the sheets down to ~ 44" X 22" to fit into the recesses of the
door.

What's the best way to cut 1-1/2" or 2" styrofoam sheets? *I don't
have a "hot wire" cutting tool.

Thanks a heap,
--Zz

Buy a hot wire cutting tool... *Or rent one if you can...

Any other method of cutting those expanded polystyrene
Styrofoam panels will result in thousands of the little
polystyrene balls flying everywhere

I've cut many pieces of styrofoam sheets with hardly any mess using
one of these knives

http://pipeknife.com/glass/pipeknife.asp

and the second blade down here

http://pipeknife.com/glass/blades.asp

which extends 3" after it is placed in the knife.


Yup, any of those tools would work well on the extruded polystyrene
panels which are blue or pink and fairly solid -- however ANY of those
used on white expanded polystyrene would create such a mess you
would never want to drink out of a Styrofoam cup or see a box with
those white cast corner pieces in it ever again...

You can really only cut foam paneling accurately around any
obstacles with a hot wire cutter... I challenge you to cut out
a perfectly round hole for a pipe without having to fill the
overly large hole you cut out with your utility knife with some
other kind of foam sealant out of a can... Using edged tools
to cut this material is ok for straight cuts to trim panels to
size, but as soon as you need to start fitting it to an odd
shape, the hot wire cutter is the only way to go for doing
the job right the first time...

~~ Evan