How To Install An Exhaust Fan In A Metal Roof

Solar roof exhaust fan.

How to install an exhaust fan in a metal roof. Leave the drill bit sticking through the roof so you can find the hole. Cut the exterior vent location depending on where you intend to exhaust to the exterior access either the side wall or the roof of the house. Try to keep it close to the fan location. The pilot hole you drilled should be in the center of the circle.

So when installing a roof mounted fan it s smart idea to also go ahead and install an exhaust fan hinge kit. This old house general contractor tom silva shows how to properly install a roof mounted bath fan vent. The strap folds over the circular ridge on the flashing and can either be screwed or nailed through the strap. Draw a circle on the roof matching the diameter of your fan.

Also bring your reciprocating saw cordless drill pencil and silicone caulk. Bring your round vent for walls or vent cap for roofs. Start in the attic and drill a hole through the roof in the desired vent location. Then get on the roof and draw the circle around the pilot hole with a piece of chalk.

Use a tape measure to determine the diameter of your fan or check the manufacturer s specifications. Metal roof installation instructions. Measure and cut to the inside fan dimensions through the wall using a reciprocating saw watch out for any electrical plumbing and insulation barriers frame the top header and bottom saddle and add any required side studs for securing the fan. Place the main body of the fan over the flashing as per figure 5.

Selecting metal roof and wall panels is a strategic investment for the life of a building. Optimal air movement not only promotes temperature regulation and energy efficiency but also reduces the risk of moisture related issues like condensation build up. From up on the roof use a jigsaw or reciprocating saw to cut a 4 in. To protect their investment it is key that your customers ensure the proper ventilation system is installed.