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Yet Another Workshop Blog #1: Week 1: Mistakes were made...

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Blog entry by Manitario posted 07-24-2011 05:04 PM 1661 reads 1 time favorited 7 comments Add to Favorites Watch
no previous part Part 1 of Yet Another Workshop Blog series Part 2: Fear, Loathing and Failure »

Purchased a new home back in June; finally got a chance to do some work on the garage to transform it from a place to park a car to a workshop…My current shop is 13×23; which I share with bikes and skis…the new shop is 17×30 which I will not have to share with anything but my tools.

First day was spent clearing out some of the junk wood that the previous owner left behind.

My plan was to put down a wooden subfloor; my current shop has a wooden floor, which I love; and after standing on cement at work all day, I didn’t want to go out to my new shop and still be standing on cement. I agonized over what would be the best way to construct the subfloor; both for insulation value and for strength. I’ve seen many different versions on LJ’s…seriously considered using DriCore, but decided away from it due to cost, and because I wanted a bit more insulation than DriCore offers. Eventually settled on using foam board between 2×4 stringers with 3/4 ply on top. Ideally I would have gone with 12” centres but I’ve read of others going with 24” centres with the foam board and having no problems, it is not really compressible and (I hope) would provide adequate support.

The last pic was taken shortly after I realized my first mistake….I had planned 24” centres and assembled my grid of 2×4’s and foam board appropriately; however, if you use foam board which is 2×8 feet you end up with 26” centres, and 2×4 stringer placement that doesn’t line up with 4×8 sheets of plywood….$^%#$!!! After I finished making a lot of noise not suitable for younger audiences, I was left with the decision of pulling up all the stringers and foam board or cutting all my sheets of ply to fit; as you can see I chose to cut the plywood. I really don’t know how well this will support my tools; there are several long edges of ply that are not lined up on the stringers; it seems to support my weight easily, but I don’t weigh 400lbs like my TS; I may yet end up having to re-do the floor.

Next was to run the electrical and insulate and vapour barrier the walls. Electrical will be 3 separate 20 amp circuits; each powering 3 plugs. I debated whether to run a few 220V lines, in case I want to switch my tools in the future to 220. I already have to put in 2 separate 220V lines, one for my DC, another for the heater and 10/3 wire is NOT cheap, so I decided against running any other 220 circuits; I can always put it in in the future if needed. Also started construction of a small closet that will hold my DC. Again, mistakes were made with the vapour barrier…vapour barrier around the electrical boxes before the insulation goes in as it is a pain in the …. after. As well, I realized that I should have insulated the walls before I put the floor in, as I could have then joined the wall vapour barrier to the bottom plate, which of course was now blocked by my sub floor… I went with 1/4” ply sheeting for the walls, looks good so far, and I get to avoid drywall.

Final step this week was to apply 3 coats of spar urethane to the floor. I have a couple busy weeks ahead and won’t get a chance to do any more work for awhile, but at least I have a start. Next steps will be to finish the wall insulation and sheeting and then start on insulating the ceiling, prior to the fun stuff of building cabinets and running my DC ducting. Thanks for looking!

-- Sometimes the creative process requires foul language. -- Charles Neil



7 comments so far

View biglarry's profile

biglarry

76 posts in 1339 days


#1 posted 07-24-2011 09:19 PM

Looks great so far. I’m looking to do something like or the same to my shop floor so keep us informed how it works for you.

Keep the pictures coming I would like to see your lighting when it’s done.

-- "When the going gets tough, switch to power tools." - Red Green

View woodbineshark's profile

woodbineshark

7 posts in 1108 days


#2 posted 09-11-2011 06:47 AM

Rob, your well on the way to building yourself a great shop, nice job it looks awsome. Good choice on the floor, it tends to get a little cool in Tbay in the winter plus the comforts of the wood floor vs cement will be appreciated no doubt. Thanks for posting the pictures and write up.

-- MS

View Rob's profile

Rob

285 posts in 1721 days


#3 posted 05-21-2014 05:44 PM

I know it’s been a while, but how has it held up? I’m trying to decide whether to go this route or go with DriCore/Barricade.

View Manitario's profile

Manitario

2334 posts in 1534 days


#4 posted 05-21-2014 07:09 PM

Held up well, the floor is warm and it is sure nice to walk on plywood rather than concrete!

-- Sometimes the creative process requires foul language. -- Charles Neil

View Rob's profile

Rob

285 posts in 1721 days


#5 posted 05-21-2014 09:10 PM

Hey, great! So no issues with the plywood sagging under your heavier equipment? You might have already said and I just missed it, but what would you say was the final cost per sq. ft. and how long did it take to install the floor (excluding finish)?

View Manitario's profile

Manitario

2334 posts in 1534 days


#6 posted 05-22-2014 10:44 AM

I’m not sure what the cost/ sqft would be, it’s been awhile since I’ve bought SM board so I don’t remember the price I paid. Probably works out to around $3/sqft. No issues with sagging; I went with 24” centers and I think that the sm board helped with the strength of the plywood on top. My heaviest machine though was the TS. I’ve just built a new garage; also went with the plywood sub floor; this time without the SM board underneath; I did 16” centers and have no issues with sag and this is with my planer (700+ lbs) and 12” jointer (650lbs) on the ply.

-- Sometimes the creative process requires foul language. -- Charles Neil

View Rob's profile

Rob

285 posts in 1721 days


#7 posted 05-23-2014 04:51 AM

Awesome…thanks for the extra info! For the 16” centers in your new garage, did you use the same foam and cut it to size, or were you able to find sheets precut to the correct size?

And, while we’re on the topic of your new garage, how is it you keep getting to upgrade to a bigger shop? I’m jealous!

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