Basement Joist Insulation

When the basement or crawl space has vents installed insulating joist bays prevents cold drafts from penetrating into the home s interior.

Basement joist insulation.

Foam boards can be used to insulate any part of the home from the roof to the basement walls. In older homes where the spacing of the floor joists varies you may need to cut the insulation to width as well. Using rigid foam keeps the material costs low but it also requires more labor than using spray foam. Impervious insulation is always an excellent idea for basement walls but it s absolutely essential where the floor joists of the level above meets outside walls along the edges of a basement ceiling.

Cut rigid foam insulation into strips with a table saw or a circular saw. Insulate basement rim joists insulate the joists. Once the ceiling is buttoned up insulate the rim joist the floor framing. Hold the batts in place by stapling their paper faced vapor retarders to the lower edges of the joists.

If both floors of the house are heated use unfaced insulation. Cut the strips to size. First you ll have to maneuver batts of insulation around the clutter of wires pipes and cross bracing in a typical. Pros and cons foam boards are rigid panels of insulation with the most common types of materials used in making them including polystyrene polyisocyanurate and polyurethane according to the u s.

If the basement floor is dirt we can apply a 6 mil layer of plastic to the floor and interior walls before installing the thermax insulation rigid foam sheets. If you re ready to insulate the rim joists in your basement or crawlspace you have to decide between rigid foam and spray foam. Building codes often call for these vents as a means of. Run a bead of acrylic caulk around each section of foam to form an airtight barrier.

Most homes have fibre based insulation stuffed into this place partially covered by a feeble and pointless layer of polyethylene vapour barrier. It s the simplest and least expensive basement area to insulate and will bring the highest return on your investment. It is important to also seal and insulate the top of the concrete wall where the sill plate sits.