This Old House Install An Attic Fan

You install an attic fan through the roof and flashed under the shingles.

This old house install an attic fan. See below for a shopping list and tools. Cut the blocking from the same 2x lumber as. Use the reference hole as a landmark to transfer your measurements from the attic to the ceiling. Mark the ceiling back in the bathroom measure the inside dimensions of the vent fan s intake port to determine what size hole you need.

Install solid blocking between the ceiling joists. Don t avoid ventilating your attic for fear you re letting cold air into the house. Cut two pieces of 2x10 to fit snugly between the ceiling joists. From inside the attic take up any plywood floor covering the desired fan location.

Gable fans are installed at the very top of your gable end walls and vented through the walls outside. This active ventilation system is inexpensive and easy to install. In this video this old house general contractor tom silva explains how to keep your attic cool with a fan activated by the sun. It should be close to an electrical outlet between.

Use a layout square or framing square to draw the. If there are asphalt shingles on your roof the attic must be ventilated to comply with the terms of the manufacturer s warranty. Install roof brackets and fall arrest system to roof. Install the shades and lightbulbs.

Identify an appropriate location in the attic to install the fan. The fan is typically mounted behind a gable end vent but other types are available that exhaust hot air through a roof vent. In attic mark location of solar powered vent between two roof rafters. Drive nail through center of vent location.

Attach each fan blade to a blade iron the bracket that holds the blade to the fan. Plug the fan s light fixture housing into the wire hanging from the underside of the fan s motor. Lift out the insulation from between the ceiling joists. Remove the insulation from between the joists in the fan s location.

An attic fan will turn on automatically when the attic reaches a preset temperature. Your actual living space is sealed and insulated at the attic floor the attic is outside this envelope. Then fasten the blade irons to the motor with the screws provided. One way to minimize this problem is to install an attic fan.