Projects



Interior Storm Windows
(Instructions)
Blowing in Insulation
Insulating a range hood fan
Sealing a Bulkhead Door
Top Bar Bee Hive
Beekeeping
Wooden Box

Insulating my Range Hood

Kitchen fan, before
Range hood, before.
photo credit: Topher Belknap

My stove has a large fan for drawing out cooking gases, which it does most effectively. However, the rest of the time it just sits there letting cold air in. As a consequence, that part of the kitchen is often cold, especially on windy days. When the wind blows from the North, the South side of the house, where the fan is, experiences negative pressure. This is enough to pull open the flaps on the fan, and draw out warm air from the house.

Some of these things are harder to fix than others, but for a start I decided to insulate the duct from the fan to the outside. It is the black box in the picture. The wavy dark line along the bottom is condensed moisture for it being colder than the dewpoint of the house.

Insulating behind
Insulating behind the duct box.
photo credit: Topher Belknap

I started by insulating behind the fan and the duct, with rigid and spray foam insulation.

Stud bay after filling with insulation
Stud bay after filling with insulation.
photo credit: Topher Belknap

Infrared picture of front door
Infrared picture of front door.
photo credit: Topher Belknap

Infrared picture of front door
Infrared picture of front door.
photo credit: Topher Belknap
Infrared picture of front door
Infrared picture of front door.
photo credit: Topher Belknap
Finished and ready for use
Finished and ready for use.
photo credit: Topher Belknap