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Do shed walls need a moisture barrier?

Anthony "TC" Williams
Experienced Landscaper
Anthony "TC" Williams is a Professional Landscaper in Idaho. He is the President and Founder of Aqua Conservation Landscape & Irrigation, an Idaho Registered Landscape Business Entity. With over 21 years of landscaping experience, TC has worked on projects such as the Idaho Botanical Garden in Boise, Idaho. He is a Idaho Registered Contractor and a previously Licensed Irrigator in the State of Texas.

Anthony "TC" Williams

Experienced Landscaper

Expert Answer

It would certainly be beneficial if you were able to install a moisture barrier for your shed walls.

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Question

How do I insulate a wooden shed with electrical already installed?

Anthony "TC" Williams
Experienced Landscaper
Anthony "TC" Williams is a Professional Landscaper in Idaho. He is the President and Founder of Aqua Conservation Landscape & Irrigation, an Idaho Registered Landscape Business Entity. With over 21 years of landscaping experience, TC has worked on projects such as the Idaho Botanical Garden in Boise, Idaho. He is a Idaho Registered Contractor and a previously Licensed Irrigator in the State of Texas.

Anthony "TC" Williams

Experienced Landscaper

Expert Answer

You will need to be careful as you install the insulation around the wiring and outlets.

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Question

Does insulation go over or behind wiring?

Andy Orr

Community Answer

Sort of both, you make a shallow cut/score horizontally across the batt and slide half of the fiberglass behind the wire and flab, with the remaining half in front of the wire - essentially sandwiching the wire in-between the fiberglass.

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Question

Do I need to put a vapor barrier between the insulation and drywall if my shed is not heated?

Andy Orr

Community Answer

No you do not, as there will be no condensation of moisture due to different temperatures meeting.

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Question

Do I need to install a vapor barrier between the insulation and my drywall? My shed is heated and air conditioned.

Community Answer

Yes, due to the moisture build up on the outside of the shed it can cause rot.

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I have an 8' x 6' foot garden shed, and I get a lot of black mildew in winter months. What should I do?

Community Answer

Try adding some sand around the areas that are affected. It will keep the moisture down.

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Question

Can I leave a shed open, or do I need to put up sheetrock after installing insulation?

Community Answer

Insulation will get moist and attract mold if exposed. Start with clean and dry insulation, staple the kraft paper batt to the sides of the studs, and cover the insulation with drywall or plywood to keep the insulation relatively dry throughout its life.

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Question

Do I need to install a vent for the space above the ceiling insulation in my shed?

Community Answer

Yes. Remember, the hot air needs a place to exit.

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