Insulating the garage door
my house facing North and the door being exposed to full sun all day,
it can get rather hot in there.
fact, unbearably hot and important work gets put off.
order to having no excuse for procrastination
decided to insulate the door.
I bought 40mm thick polystyrene from Australinsulation at the cost of
to the guys from iinet.general
for helping me with finding a good a supplier)
$10 of the price was
for cutting the 2
large 3.6x1.2m sheets to 1.2x1.2m size.
turned out that this was still a tad
too big, but cutting once more was no problem for the friendly staff.
There are also 2
of 20mm thickness which came handy for covering the pelmet which I
forgot to add in my calculation.
I quickly rigged up a large bow kind of thing with a resistive wire to
cut the sheets to size. I like making tools, a lot:-)
old outdoor chair spring compensates the temperature expansion of the
An even older transformer supplies 12 V at 6 A and the heat is just
Now I am glad that I didn't go for
roller door when I was building.
Here are the door
panels filled with
they are covered with Bradford Enviroseal, which was left over from
some work I did on the roof 2 years ago. I prefer the shiny side
visible to brighten up the room:
temporarely removing the panel fittings to glue the sheets on, one has
to be careful not to remove the bottom one, which holds a steel cable,
which again holds most of the weight of the door against gravity with
the help of the coil spring (see on top of the door in the first
picture). It could be quite dangerous I suppose.