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.

Capping off a chimney flue.

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. Chimney cowls for capping chimney cowls are normally used to adequately ventilate chimney flues connected with an appliance like gas fires open flame gas fires wood burners coal fires etc. Get onto your roof with a ladder. Buy a cap that has the same length.

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. Flue ventilators can be found on our chimney potpage. Capping unused chimneys flue ventilators uk. Find the flue on your chimney which is the clay or metal.

Use a ladder that extends at least 3 feet 0 91 m above your roof so you can. You should cap any unused chimneys with a flue ventilator. Insulating the bottom of the chimney once you ve capped the top of the chimney you will need to insulate the bottom of it. Apply a bead of butyl rubber caulk around three sides of the chimney at.