Insulated Duct For Bathroom Exhaust Fan

The duct has r6 insulation which contains 33 more insulation than the standard r4 2 product.

Insulated duct for bathroom exhaust fan.

I recently installed a bathroom exhaust fan. The master flow 4 in. The building code requires a bathroom exhaust fan to vent outside the building so installation of a new bathroom fan necessarily involves installation of ductwork. The ducting of your exhaust fan should be properly insulated.

The duct runs in my attic above the bathroom ceiling two story home. Ac infinity flexible 4 inch aluminum ducting heavy duty four layer protection 8 feet long for heating cooling ventilation and exhaust 4 5 out of 5 stars 264 terrabloom 4 air duct 8 ft long flexible ducting with 2 clamps 3 layer hvac ventilation air hose great for grow tents green houses house vent register lines 4 5 out of 5 stars 329. Kitchen vent fans require metal ductwork for fire safety. Otherwise the warm moist air will condense inside the duct.

I used flexible 4 aluminum duct to the exhaust damper on the roof. For optimum venting use insulated 4 or larger metal ductwork rather than flexduct that may sag giving you areas that collect water and risk leaking into a ceiling below. You can also run the fan longer at least 10 to 15 minutes after showering is a good baseline so the ice melts or doesn t freeze in the first place. In un conditioned space such as an attic where otherwise your fan duct will be exposed to cold attic air in winter use insulated solid metal ducting or insulated flex duct.

This is non usable space and it is well ventilated with ridge and soffit ventilation so it does get cold in the winter. Insulated flexible duct r6 silver jacket is used in standard heating and air conditioning hvac systems and some venting applications. The common solutions to this ice problem are to use a higher powered fan use a larger diameter shorter duct run and wrap the pipe with better duct insulation. Bathroom vent fan ductwork insulation insulate the bathroom exhaust vent fan ducts.

Insulating around a bathroom exhaust fan it s a diy project and if you love to do some small diy projects probably you already have all the things you need.