Insulate Under Bay Window Floor

Bay window and floor deck cantilever insulation details.

Insulate under bay window floor.

Bay windows are one of the more complicated window styles to install but their impact is well worth the effort. Also added 2 pics under the bay window showing the white vinyl siding 1 8 green foam sheet insulation brown lap siding heavily weathered white trim board and 1 2 white styrofoam. I am planning on insulating my 1st floor bay window using celotex or similar between the joints. Celotex pl4050 is a thermal insulated plaster board.

In this article i ll share a detail for new construction and also a detail for renovating existing bay window. Side walls also need insulating if no cavity exists. 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. 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 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. To be used under bay window. I have removed the plaster and lathe but now i have a question. 50 mm celotex bonded to plaster board.

Buy this item from amazon uk. No vapour barrier is required and the foam blocks a considerable amount of sound transmission from the outdoors too. 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.

They include bay windows greenhouse windows bow windows bump outs porches and balconies. Most people only insulate under the bay window. Consumes 2 to 3 times more energy than needed mainly because of insufficient insu. In addition to floors other cantilevered architectural features may require insulation.