Rigid Foam And Batt Insulation In Basement

Attach the tongue and groove insulation boards to the concrete wall with adhesive.

Rigid foam and batt insulation in basement.

For a basement remodeling project consider insulating basement walls with foam board. Rigid foam can be used as sheathing a continuous layer of insulation on wall exteriors attached before the installation of house wrap and siding. You do not need additional insulation on top of the rigid foam board on the non exposed walls. These boards offer better basement insulation than fiberglass.

I think your instincts are correct. Rigid foam board is another common insulation option. Paul march 6 2015 at 12 41 pm. Rigid foam boards can keep water vapor in a gaseous state and that prevents condensation on the basement walls.

Now do i do the floors next with the same r igid boards plywood on top then my studded walls filled with pink insulation or do i put my studded walls after my rigid foam on the walls and then the floors with rigid foam. Foam board insulation is easy to cut with a circular saw with a masonry blade or scored with a utility knife and snapped like you would drywall. From below grade to above grade inside and out halo is the rigid foam insulating system designed perfectly for specific applications including basement floors. One disadvantage of rigid foam is for it to be effective it must be attached directly to the wall using adhesive or idp foam insulation anchors.

To attach the insulation you can use screws with large washers a special adhesive made for adhering foam board insulation or for smaller pieces you can seal them in with caulk or spray foam. The rigid closed cell foam is installed in large sheets usually no less than one and one half inches thick over the entire surface of the foundation wall. I suppose adding insulation on the exposed wall can t hurt and won t be very expensive maybe a hundred dollars or so for the batt insulation. The foam insulation panels are usually made of polyurethane polyisocyanurate and polystyrene.

Rigid foam panels are also a good way to insulate on the inside of concrete basement walls. Indoors rigid foam is the material of choice on walls where the insulation will be touching masonry mostly this means the exterior walls in basement build outs except for daylight facing walls such as. Depending on thickness and the type of foam you choose super high effective r values can be achieved. Follow with a 2x4 frame wall and insulate it with batt insulation.

When you are looking for polystyrene eps insulation board think halo. I have insulated my basement so far with closed cell rgid boards 1 5. Choosing the right thickness of exterior foam rigid foam must be thick enough to prevent condensation on the roof sheathing. Perhaps the most effective way to install basement insulation is to use both rigid foam insulation in conjunction with stud walls that also contain fiberglass batts.

Good luck with your basement renovation sounds like you have a great plan.