Workshop questions

[chris vickery]

Paul, if you look in one of my pics you may see a ceiling mounted forced air gas furnace. Its not all that large, if memory serves its only about 50 or 60,000BTU an wasn't that expensive. I believe I got it installed around $1800 all in- furnace, chimney, gas lines, installation and taxes. I could have opted for oil but it has pros and cons. The biggest pro being that dollar for dollar you get more BTUs out of oil yet the cost is higher. Also, the potential environmental impact and damage should you ever have a leak...
Get some ceiling fans as well, they will help to keep the air circulation going which keeps the temperature more constant. Mine were about $129 each from Home Depot. I also don't play the thermostat game. Set it low and leave it there all winter. If need be, turn it up for the time when you are working in the garage. I only need to turn mine up a few degrees and it doesn't take long to be comfortable since everything in the garage is already a consistent temperature.
As far as plastic liner I am no expert. I believe the Ontario Building Code stipulates a fire retardant surface on top of framing such as drywall then other coverings may be applied over that. Not so sure this stipulation applies to freestanding garages but I do know it applies to attached ones in residential applications.
I guess you can see where my choice is for interior coverings in a garage. Quite a few friends have also been down the same road and that is what they went with as well.

[Jordan Baker]

I’ve seen in buildings that had the plastic wall coverings have some issues in a dusty environment. We used a blower to help clean out all the dust and it resulted in a ton of static electricity attracting dust to the panels.

[Paul Singleton]

Thanks Jordan, I hadn’t thought about static electricity buildup on the plastic panels. It could make dust almost impossible to clean off, as the wiping motion from a broom or brush could cause even more static buildup.
Paul

[Robin Craig]

Just an observation, you can't buy natural light.

I am putting a lot of windows in mine knowing I am robbing myself of wall space.

[chris vickery]

Robin, an excellent comment. I too have taken advantage of the most natural light possible. I have three windows 36" x 48" along the exterior rear wall of the garage. When I was choosing my three garage doors, I had one panel of each door equipped with window panes at about the 6ft height. In winter, I place Styrofoam pieces in the windows at the back of the garage as it is the windward side to help with insulation. The white Styrofoam still allows natural light to radiate through. I also chose windows with a high R-value for northern climates as well as commercial grade garage doors with R-18 insulation.
My ceiling features 3 rows of 5 fluorescent fixtures (4ft twin lamp) which is quite bright.
A bit of extra money upfront pays dividends over the long run...

[Phil Waterman]

Hi Paul

You have asked for comments on a very good topic. The information members are bring forward is good stuff.

I built my 2nd and last CMP workshop in 2004 my first comment never enough space, never enough organized storage space. My shop is 24x36 feet with 12 ft ceilings and has a loft with 900 sq.ft. of shelf space.

I insulated my shop walls and ceiling with 2" blue insulating board, pretty efficient but one problem the blue board shrinks 1-2" in length leaving gaps after about 10 years don't know if this is normal or result of being exposed to paint thinners.
Blue Board .jpg
The ceiling boards were cut to fit between the joist, and I then blew in stria-foam packing peanuts. Result there is very little loss of heat through the ceiling.

I have two suggestions, programmable thermostat so you tell the heat to come on 2 hours before you go out to work. Second combination ceiling fan air filtration units.

It has been mentioned that adding ceiling fans will help get the heat down of the ceiling. Instead of buying ceiling fans I took an old room fan made a frame to hold air-filters. Result I have a unit that blows the hot air off the ceiling down to the floor and takes the dust out of the air at the same time.

Recently I made a second unit with a new fan and new filter rack design that holds two layers filters around the sides and one layer on the top. On the first unit I moved the 3 speed switch from the fan to the wall so the speed can be changed to fit the need. The effectiveness of the units of course depends on the filters you choose to use. But they are fairly effective because when you are sanding the surface of the outside filters changes pretty quickly depending on color of what you are sanding.
Air Filter .jpg Air Filter 1.jpg
The newest unit is directly over my primary work area so it is blowing filtered air down on me. The other unit is at the far end of the shop and was intended primarily to get the hot air off the ceiling and back down to people level.

Did some air flow studies on the units because of the large filter surface area the speed is low, (good for filtering) yet moving a lot of air yields a lot of cubic feet of air going through filters. Time for one unit to filter the cubic volume of my shop is about 14 minutes, so with two units that time is cut in half.

One thing I have learned that when it is time to change the filters you want to slide them out carefully and directly into a plastic trash bag. These filters can get pretty dirty and dropping one on the floor makes a mess.

Cheers Phil

Keep us posted

[chris vickery]

For your consideration Phil might I offer this opinion...
I think it is more likely that your wood joists have shrunk over the years as the timber dries out and not the styrofoam itself. Food for thought.
BTW, your air exchanger invention is interesting. One thing I considered but did not do was to install an exhaust fan in a sidewall. I guess I am too picky so my shop does not see sanding dust or paint too much as I do most outdoors. If I were to build another shop or add an addition I think I would have a separate section walled off for “dirty work”.
Paul you alluded to perhaps sectioning off your shop, maybe you will take this as a consideration...