In article , George wrote:
I'm about to install laminate flooring in our laundry room which was
built on to the outside of our house. The room is only about 50 sq ft
(5' X 10') and currently has no heating. Which means it gets a bit
chilly in there during the winter months (i live on southern vancouver
island british columbia). It has a 3 ft high insulated crawl space
underneath. I believe the walls have little insulation (old house).

It's an outside laundry, not living space. Tear off the interior wall
covering (plaster/wallboard) and put some high grade insulation in there.
I like the rigid foam with aluminum foil facing.

Replace the walls with that green waterproof wallboard and paint at your
leisure. You should be able to get the walls down and back up in a
weekend although final painting will be another weekend. Don't forget
the ceiling - you might want to replace that also.

And with the walls down, replace the wiring, insulate the pipes and and ...
You may not need to heat it. But in any case, I'd never ever put in
electric heat where the walls, ceiling and floor weren't highly insulated.