Whether you spend most of your time tinkering around in your shed pretending that you’re the greatest inventor in the entire world, or you can use it as a place to store your precious plants during the cold winter months, there’s a good chance that you need to insulate the floors of your shed. When you insulate a shed you’re making sure that your possessions inside are safe from the elements all year long, and not to mention, who wants to work out in their shed when it’s only 15 degrees outside? Needless to say, if you use your shed to store items or you use it to spend your time there working on different projects, then you most definitely want to consider insulating the walls, floors, and the roof of your shed.
Insulating the floor of your shed can dramatically reduce the amount of heat that is lost through the floor, so before we get to the simple instructions needed to do so, let’s take a look at the different kinds of insulation that can be used.
Types of Insulation
There are several different options to choose from when it comes to insulating the floor of your shed, and luckily for you, this type of project is typically a one-person job!
This type of insulation is made out of fragments of fiberglass or stone wool. Typically, this type of insulation is blown or dumped into wall cavities, floors, and other hard to reach spots that you might come across. Unfortunately, loose-fill/blown-in insulation settles over time so cold spots can be created when used in vertical applications.
Batts and Rolls/Blanket
This type of insulation is made from stone wool, fiberglass, plastic, or other natural fibers. It’s used to fit in between the standard stud and joist spacing. It’s great for unfinished floors, so if you aren’t working with a pre-existing shed then this type of insulation might be a great option for you.
Foam or Rigid Board
Made from different polymers, foam or rigid board insulation has a better insulating value per thickness than most other materials. This type of insulation is great for unfinished floors, so you should consider using this type if you are working with a pre-existing shed.
Now that we’ve discussed the different types of insulation available, it’s important to talk about the R-value of the insulation.
Getting the R-Factor
The R-value of insulation measures just how well different building insulation materials can resist heat. The higher the insulation’s R-value, the better the insulation will be at keeping the area nice and warm. Since we’re talking about insulating a shed, which could certainly use some high-quality insulation, you would definitely want to find insulation that has a high R-value. Of course, where you live in the world plays a part in choosing the R-value, so make sure that you do a bit of research before you spend your hard-earned money on unnecessary materials.
It may not come as a surprise to find out that choosing the correct insulation is one of the hardest things about getting this job done the right way, so now that you have yours picked out let’s get into the rather simple process of installing the insulation in your shed.
The Installation Process
Installing insulation on the floor of your shed will actually create a thermal barrier between the inside of the shed and the outside air spaces. Typically, shed floors are open joist construction with a plywood floor, so the basic plan is to fill the space in between each joist with insulation. Before you get started, it’s important to keep in mind that the exposed ground facing the edge of the joist works as a thermal bridge for heat to transfer into the insulated space. To prevent this from happening you need to insulate across the joists, as well!
Depending on whether or not you have a pre-existing shed or a brand new one will determine how you will go about insulating it. These instructions are for pre-existing or brand new shed floors that don’t require you to get up under the structure of the building.
- If you’ve never installed insulation or you’re not really the greatest DIY’er, you might want to hire a carpenter or handyman to help you get the job done more quickly, efficiently, and professionally.
- Take the measurements of the shed and bring them into a home improvement store. You don’t want to buy the incorrect amount of insulation, so make sure you ask a customer service representative for help if you’re unsure of how much to buy.
- Roll the sheets of insulation out and set it against the frame of your floor.
- If you’re using rolling sheets or batting, then you want to use a staple gun to attach the insulation to your floors. If you’re using polystyrene sheets, then you’re going to need a special adhesive, which can be bought at any home improvement store, to glue the sheets to the floor.
- Overlap each of the sheets of insulation wherever they meet. Later, you can use a pair of scissors to cut off any excess insulation.
As you can see, there’s not really too much effort that goes into insulating a shed floor. Of course, it’s definitely a lot more difficult if you have to get under your shed to insulate it. As we said before, if this is something that you’ve never done before, or you feel that you could use an extra set of hands, bring a professional for help. While insulating a floor may not be too hard of a job, it can be frustrating and tedious if you don’t really know what you’re doing. With that being said, do a little bit of research, find out what kind of insulation you need, and get to work! With these simple instructions, you should be able to insulate the floor of your shed in absolutely no time at all. And if all else fails, call in a handyman for a bit of help!