Outdoor (Insulated) Generator Box

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Project by MayflowerDescendant posted 11-13-2010 06:26 AM 24547 views 9 times favorited 8 comments Add to Favorites Watch

Moving from Southern Ontario to the West Coast, we traded cold / snowy winters for coastal wind and rain storms (not to mention, the odd earthquake!). Occasionally, we would lose power. That is, until I decided to invest in a good-size generator – one that would provide temporary power to run the basic necessities of a household. The next decision is how / where you are going to store the generator and provide power into the house when required. I wanted protection from the elements and security at the same time.

What you see here is the design I came up with. The left door (with vent) is removable for increased air flow (when the unit is running). The front door opens to provide access to the generator control panel (it’s a key start). The rear door swings open to provide an effective exhaust port. The lid opens for full interior access and fueling. While I can fully service the generator in place, if I do want to remove it, the front wall is removable. To top it off, the sides, lid and base are fully insulated and vapour barriered. The inside walls and lid are skinned with 1/4-inch ply (with 3 coats of exterior, semi-gloss Varathane).

The exterior sides and top have two coats of primer, followed by two coats of paint (to match the trim on my house). The pressure treated wood drip edge (around the base) has four coats of exterior, semi-gloss Varathane. All doors / vents have water-proof gaskets around them. Most exterior, mating surfaces (e.g. drip edges / overhangs) are caulked with either beige or clear silicone. All hinges, hasps and clasps are exterior grade and the (blue) weather-resistant locks are from Lee Valley (product number 00F25.01). The box itself took a little over 500 stainless steel screws. The pressure treated base and box floor took about 80 coated deck screws.

Bottom line … I did my best to build it to last.

For a complete description, more construction details, and many more pictures of the box construction (interior / exterior) and installation, see the blog I wrote on the same subject … p://

Thanks for taking a look!


-- Glen - Vancouver, British Columbia, Canada

8 comments so far

View Sarit's profile


552 posts in 4590 days

#1 posted 11-13-2010 08:48 AM

Nice work!
When you say “for security”, are you implying that these sometime get stolen? What part of the west coast did you move to?

View ND2ELK's profile


13494 posts in 5224 days

#2 posted 11-13-2010 08:51 AM

Very impressive build. Should last a long time. Thanks for posting.

God Bless

-- Mc Bridge Cabinets, Iowa

View shipwright's profile


8816 posts in 4249 days

#3 posted 11-13-2010 06:08 PM

Ahh.. Life in the Pacific rain forest ….. Ya gotta love it. I know where you’re coming from Glen. We’re looking at a generator his year too. What kind did you get? By the way, Very nice enclosure. Things like this are often neglected while we make “pretty things” in our shops.

-- Paul M ..............the early bird may get the worm but it’s the second mouse that gets the cheese!

View Ken90712's profile


18113 posts in 4639 days

#4 posted 11-13-2010 06:14 PM

Nice work, Looks great!

-- Ken, "Everyday above ground is a good day!"

View DYNO360's profile


151 posts in 4316 days

#5 posted 11-14-2010 04:22 PM

Fantastic job. You should be designing and building bank vaults!

View RexMcKinnon's profile


2593 posts in 4646 days

#6 posted 11-15-2010 06:31 PM

Looks great, I would love to see some pictures with the doors open.

-- If all you have is a hammer, everything looks like a nail!

View RexMcKinnon's profile


2593 posts in 4646 days

#7 posted 11-15-2010 06:32 PM

Nevermind, I just saw the link for your blog.


-- If all you have is a hammer, everything looks like a nail!

View SawdustTX's profile


414 posts in 3774 days

#8 posted 03-12-2015 11:40 PM

Man I like this. I have a 5hp horizontal compressor I’ve been thinking of kicking out of my garage and a slightly bigger version of this would be a perfect housing for it. Thanks for sharing.

-- Make it your ambition to lead a quiet life, to mind your own business and to work with your hands. 1Thessolonians4:11

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