Gaps Roof Attic Bottom

How much of a gap should i leave at the tops and the bott.

Gaps roof attic bottom.

The hot air will travel the path of least resistance to make its way out of your attic. This material should have extended all the way to the bottom ends of the rafter joists where the roof deck meets the fascia board basically the area where the gutters are hung. By leaving a gap some of the air behind the foil will come in to the attic but that is ok. When you install atticfoil with the proper air gaps it allows for maximum ventilation between the roof and the foil and it also gives you the benefit of full.

Radiant barrier foil question. The success of a vented attic or roof deck relies on its airtightness. 3 you can see usually a light where floor of the attic meet roof this is the light from soffit fascia area. Baffles placed in this area channel intake air into either the attic space or vent chutes and also prevent insulation from falling into the soffit and blocking airflow.

I m installing atticfoil radiant barrier using the staple up method. The most common blown in material used but it can rot and grow moldy if exposed to moisture. Unfortunately in most homes this is not the case. Gaps in the attic or between the lower floors and the attic will let heated or cooled air escape to the great unconditioned outdoors making any insulation you add essentially useless.

The space above the top plate of exterior walls at the bottom of each rafter bay is especially important. Visible gaps in roof from attic.