Insulating Sunroom Floor

Steven baczek a residential architect from reading mass who specializes in designing durable low energy homes responds.

Insulating sunroom floor.

When you convert a porch into a sunroom you ll get the most usage from the new room if you ve taken steps to insulate properly and a good place to start is the floor. He used vinyl vented soffit for the ceiling which we took down so that we can insulate. This can be stapled up between the floor joists. If we don t insulate the floor and ceiling and heat air condition it the room is somewhat useless as it is way to hot in the summer and too cold in the winter to use.

Roll out the fiberglass insulation sheets between the joists facing side up making sure it is snugly in place. Use a vapor barrier to keep your floor above free from condensation caused by the new insulated area. What is the best way to insulate and raise the floor to match the hardwood floor in the main house. Install a vapor barrier to keep moisture and condensation off your insulation floor joists and the bottom of your flooring material.

A floor with ducts also should be insulated with a continuous layer of thick rigid foam under the floor joists. The former owner insulated the walls but not the floor or ceiling. A client has a sunroom with an uninsulated concrete slab that is 5 inches below the house floor. Foam board or insulating boards are rigid panels of insulation that have a high r value.

Because they have a high r value and can be used nearly anywhere in your home foam board insulation is one of the most common types of insulation. Insulate ducts and plumbing and put them close to the floor. If it is above grade winter drafts will make the room too cold to use no matter how well the walls and ceiling are insulated. How to insulate a sunroom or 3 season porch.

Here are some steps you can take to insulate the floor of your sunroom. Best for floors foundation and basement walls interior and exterior wall sheathing and low sloped ceilings. With that 5 inch height difference i assume that the walls are. If hvac ducts are routed through the floor assembly the floor joists must be deep enough to install several inches of insulation under the ducts.