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Insulate under bay window floor.
They include bay windows greenhouse windows bow windows bump outs porches and balconies.
Bay window and floor deck cantilever insulation details.
Most people only insulate under the bay window.
I have removed the plaster and lathe but now i have a question.
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.
The smooth surface between the floor joists is cardboard laying loose on top of the t g flooring.
No vapour barrier is required and the foam blocks a considerable amount of sound transmission from the outdoors too.
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 am planning on insulating my 1st floor bay window using celotex or similar between the joints.
Bay windows are one of the more complicated window styles to install but their impact is well worth the effort.
Consumes 2 to 3 times more energy than needed mainly because of insufficient insu.
And the farther a bay window protrudes from the house the more dramatic the effect and the more it opens a room.
To be used under bay window.
This type of window protrudes from the house while also letting in lots of light.
Side walls also need insulating if no cavity exists.
50 mm celotex bonded to plaster board.
Either way filling the floor cavity with spray foam delivers excellent thermal insulation while also keeping drafts out of your bay window area.
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.