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Old Jan 13, 2010, 05:36 AM
David Littlewood
David Littlewood
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Re: Heating a workshop/garage

In article <7r5mo4Fb4pU1@mid.individual.net>, Donwill
<Donwill.seesig@invalid.invalid> writes

>It's far too cold to go and play with my newly aquired mill in the
>wksp, I've started insulating it but heat is required to create a
>decent environment.
>To minimise the risk of condensation on machines the temperature should
>be kept reasonably constant but that's expensive if you heat to a
>comfortable working temperature. What do experienced wksp engineers do?
>and what type of heating do you reccomend?
>Don


Don,

When I expanded from my small workshop a year or so ago to annexe the
garage, I had the same issue. The workshop is not heated but is open to
the house and reasonably warm; the garage was unusable in winter as it
was.

I decided the first need was to insulate. I fitted fibreglass insulation
and plasterboard to the roof. An estimate of heat loss (Googling "heat
loss calculator" will show up dozens of pro-formas, though not many
cover steel doors) showed that most was lost through the steel
un-and-over door, but the manufacturer did not supply insulation panels
for it (sidebar - should it not be a requirement to make these
available? - the heat lost through these things can be enormous). I am
still working on this, something cobbled up from polystyrene or
polyurethane sheets seems probable.

Then I fitted heaters. It seemed to me that electrical heating was the
only sensible option, and I fitted a couple of ceramic panel heaters
from Machine Mart:

http://www.machinemart.co.uk/shop/ca.../panel-heaters

and wired them up through a cheap wall-mounted thermostat from Screwfix.
A little experimentation is required to get the desired temperature, as
(certainly in my experience) the temperature achieved fell rather short
of the marked figures.

My experience is that I need to improve the insulation or crank up the
heat to make the garage habitable first thing in the current weather -
it improves once I have opened the door connecting it to the house for a
couple of hours, though still a bit nippy. However, it has, so far,
meant that I have seen no signs of corrosion on the machinery and
tooling stored there.

David
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David Littlewood