Finished Attic Hvac

Consider whether the old system is powerful enough to cover new areas without losing efficiency though.

Finished attic hvac.

This isolates the attic from the rest of the home which means the attic isn t part of the conditioned envelope. Increase or move insulation. Building codes vary by location but most require at least a 7 foot clearance for attic expansions. Enforcement varies but codes typically say that at least half of a finished attic must be at least 7 feet high and that this area must be a minimum of 7 feet wide and 70 square feet.

That s measured after you finish the ceiling. Every attic is different but a few established norms and practices will guide your renovation. In many homes the insulation layer in the attic is along the floor. A contractor or a local building official can help you assess how the rule will apply to your attic and how modifications like dormers can resolve height shortcomings.

Attic ventilation systems also work together with your insulation. If you don t have enough height you ll have to raise the roof line and that adds a lot to your construction costs. If your home already has ducts running in the attic the simple solution is to keep using the old system to pump treated air into the newly finished attic room. Follow the rule of 7s.

To find the answer you can hire an inspector to inspect your hvac system. Attic hvac units are potentially inefficient. The type of ventilation or roof vent that you ll need depends on your home s construction and the details surrounding your attic. Need more headroom in the basement.