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    How to Insulate a Shed

    Sheds are great for storing lawn and garden tools, equipment, barbeques, lawn furniture and more. While they are an ideal place to keep to those items out of site and out of the elements, condensation can sometimes occur inside sheds when moist air meets cooler air. This can sometimes leave your tools and equipment vulnerable to rust and corrosion. Insulating your shed is a smart and easy way to remedy that. As an added bonus, if you happen to be a gardener, an insulated shed can also be a sneaky way to get seedlings started extra early in spring and get a head-start on planting season. Here’s how to insulate a shed in five easy steps.

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    Step 1: Select Your Insulation Type

    The first step to insulating your shed is choosing the type of insulation you’ll be using for the project. Since it’s only an outdoor shed, you probably won’t want to go with a high-end insulation. You’ll want to choose something that’s cost effective, but still has a high enough R-rating to do the job.

    You have a few different options here. For example, you can purchase blanketed rolls of insulation made of fiberglass, cellulose or even mineral wool. Note that since mineral wool tends to be more expensive, it may not be worth the cost for this type of project. One advantage of fiberglass rolls is that it comes with a vaper barrier. Another good option is foam insulation boards made from a material called polyisocyanurate. These are sturdy, rigid boards that can be cut to size and fitted snuggly into the spaces between wall and ceiling joints where your insulation will hang.

    Step 2: Gear Up for the Job

    Before you begin cutting and hanging insulation, you’ll want to equip and dress for the job. If your hanging fiberglass insulation, wear gloves and longer sleeves to keep fiberglass particles from irritating your skin. Gloves will also protect your hands from blades used to cut insulation. Wear safety glasses and a mask or respirator to avoid inhaling particles of insulation, especially if you’re hanging cellulose.

    Step 3: Measure and Cut Your Insulation

    When you measure and cut your insulation, you’ll want to lay it out on a firm, flat surface such as a longer piece of plywood. You can use a utility knife or other type of scoring blade to cut the insulation. If the shed you’re insulating has a standard wood framing design, your walls and roof joints will be 16-inches on center. Most rolls of insulation come in 15-inch widths and will fit snuggly into the cavities between joints, so you’ll only need to cut them lengthwise. If you’re using polyiso foam boards, you may need to cut them to length and width, depending on what size you’ve sourced.

    Step 4: Hang Your Insulation

    Next, you’ll place your insulation into the spaces between the joints. If you’re using fiberglass insulation rolls, make sure the vapor barrier side faces the interior of the shed. Use a staplegun with at least ½” wood staples to hang the rolls. Do not staple foam boards. The boards should fit snuggly into the area between joints if they’re cut accurately enough. Use an adhesive to secure them to the walls and roof. You can caulk the seams between boards for a better seal. But remember to leave an air gap between the roof and the foam boards.

    Step 5: Finishing Touches

    Once you’ve hung your insulation, you can simply cover it with plywood boards. If you want to insulate the floor, you can use a breathable membrane or even a piece of carpet to keep heat from escaping through the floor. From there, your shed is insulated and ready to use with the peace of mind knowing you’ve taken steps to avoid condensation and protect your belongings from the elements.