insulating under a bay window

Old 01-25-02, 11:57 AM
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insulating under a bay window

Can I fill the space under a bay window with insulation, or would that block any heat from getting in there? The current insulation is laid horizontally. I was going to lay some more vertically. The floor above this arrea is always cold.
Old 01-26-02, 03:46 AM
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One way to achieve a bay window is the floor joists are cantilevered over the foundation wall to create a "walk in bay area". The underside and pony walls of this area should have a vapour barrier on the warm side of the insulation and depending on location, an R28 value in the floor with the vertical walls insulated too the same value as the rest of the exterior walls. Do not forget to include the part under the floor at the rim joist. A heat duct should also be installed in this area as like any widow or door area.

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