Outdoor (Insulated) Generator Box

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Project by MayflowerDescendant posted 1338 days ago 5427 views 6 times favorited 7 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

7 comments so far

View Sarit's profile


465 posts in 1726 days

#1 posted 1338 days ago

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


13495 posts in 2360 days

#2 posted 1338 days ago

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

God Bless

-- Mc Bridge Cabinets, Iowa

View shipwright's profile


4807 posts in 1384 days

#3 posted 1337 days ago

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 ..............If God wanted us to have fiberglass boats he would have given us fiberglass trees.

View Ken90712's profile


14821 posts in 1775 days

#4 posted 1337 days ago

Nice work, Looks great!

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

View DYNO360's profile


147 posts in 1451 days

#5 posted 1336 days ago

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

View RexMcKinnon's profile


2593 posts in 1781 days

#6 posted 1335 days ago

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 1781 days

#7 posted 1335 days ago

Nevermind, I just saw the link for your blog.


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

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