Insulate Under Bay Window Floor

They include bay windows greenhouse windows bow windows bump outs porches and balconies.

Insulate under bay window floor.

If the floor is over a garage and has not already been insulated however it is recommended that each joist bay be filled with insulation. I ve written quite a few articles on how to insulate basement walls and floors but one more specific topic related to this subject keeps coming up and that s how to insulate a bay window floor or cantilever floor framing. Side walls also need insulating if no cavity exists. Either way filling the floor cavity with spray foam delivers excellent thermal insulation while also keeping drafts out of your bay window area.

In addition to floors other cantilevered architectural features may require insulation. Most people only insulate under the bay window. No vapour barrier is required and the foam blocks a considerable amount of sound transmission from the outdoors too. I am planning on insulating my 1st floor bay window using celotex or similar between the joints.

This high performance thermal insulation board has 50mm of pir insulation. To be used under bay window. In this article i ll share a detail for new construction and also a detail for renovating existing bay window. This type of window protrudes from the house while also letting in lots of light.

And the farther a bay window protrudes from the house the more dramatic the effect and the more it opens a room. The smooth surface between the floor joists is cardboard laying loose on top of the t g flooring. Buy this item from amazon uk. The void between the joints drops down below the floorboard level and seems to be a void until just above the ground floor window.

I have removed the plaster and lathe but now i have a question. Celotex pl4050 is a thermal insulated plaster board. Consumes 2 to 3 times more energy than needed mainly because of insufficient insu. 50 mm celotex bonded to plaster board.