Flue ventilators can be found on our chimney potpage.
Capping off a chimney flue.
Put on heavy work gloves and use tin snips to cut a piece of sheet metal to the same measurements as the chimney opening.
However a standard chimney cowl can provide a good alternative to capping a chimney or if you think you may use the flue later to connect an appliance.
Unused chimneys not only waste a lot of heat they also pose a potential damp problem as well as being a cause of smoking fireplaces and stoves.
Capping the flue is one of the best ways to close up the top of the chimney as it will still allow air to get in and out preventing condensation from building up.
Insulating the bottom of the chimney once you ve capped the top of the chimney you will need to insulate the bottom of it.
Find the flue on your chimney which is the clay or metal.
Apply a bead of butyl rubber caulk around three sides of the chimney at.
Buy a cap that has the same length.
Get onto your roof with a ladder.
Capping unused chimneys flue ventilators uk.
Use a ladder that extends at least 3 feet 0 91 m above your roof so you can.
Measure the length and width of the flue on your chimney.