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Fiberglass is the best insulation material when insulating a shed floor due to its affordability and performance. Insulation helps prevent heat loss as well as prevent your pipes from getting frozen. Insulating your shed floor will keep your shed warmer in the winter and cooler in the summer since the insulation prevents air from quickly seeping to the outside. Here is how to properly insulate a shed floor.
First, you need to know what type of insulation you’ll use. Here are some of the insulations to choose from as well as their pros and cons. It is critical to know the types of insulation you’re going to use for your project as well as the advantages the insulation has.
Fiberglass – Fiberglass is composed of glass fibers reinforced by a plastic matrix. It is lightweight as well as effective insulation for shed flooring.
- Lightweight insulation
- Affordable Insulation
- Easy to insulate
- Weather-proof insulation
- Skin irritating
- It could cause lung disease if a mask is not worn
Rigid Foam Board – Foam board is one of the best insulations for shed floors. Rigid foam insulation is moisture-resistant and can be used for multiple areas. For example, exterior walls, attics, basements, and floor joists.
Rigid Foam Board pros
- Great for preventing moisture
- Prevents unwanted air leaks
- It has a high R-value (it is highly effective insulation)
- Fire Resistant
Rigid Foam Board Cons
- Sunlight, UV light sensitive
Second, you can insulate the shed floor from the top by removing the subfloor or from the bottom of the shed by going under the shed to insulate the shed floor. We will walk through how to insulate a shed floor from the top, which is the easiest. The purpose of going under the shed is if you can’t remove the subfloor because it is glued and nailed down or if it’s a finished floor.
Third, you need to remove everything in your shed. We recommend using a rigid foam when insulating your shed floor because of its effectiveness and durability, as well as it is being easy of insulating. After you’ve taken the subfloor off, you can start by measuring the spacing between the shed floor joists. And start cutting some boards using the measurement you’ve taken. These boards will support the rigid foam insulation to lay on so it doesn’t fall under the shed.
Fourth, Start nailing the boards between the floor joists. When nailing the blocking boards to the floor joist, they have to be a maximum of 4’’ to 6’’ apart from each other. After all blocking boards are installed, you can start measuring the rigid board to the appropriate size for the insulation. Before insulating the rigid foam into the spacing of the floor joist, use liquid nails to put some glue on the side of the wood joist and the blocking boards. Once you’ve glued the appropriate spots, you can install the rigid foam on the floor joists. Make sure the rigid foam is airtight, and use ring-shanked nails to fasten it. After every spacing between the floor joist is insulated, you can re-install your subfloor.