Capping Off An Unused Chimney

Usually unused chimneys are capped off with a bent sheet metal covering and perhaps a wire strap or weight on the top.

Capping off an unused chimney.

Remove the cap on the chimney. Capping a chimney off with a slab. These can simply be made out of a scrap or an offcut of lead beaten into the correct shape and bonded to the top of most chimney pots to effectively seal it and make it waterproof. Http www fixmyroof co uk videos and guides chimneys chimney capping in this video i show 3 different ways to cap off a disused chimney that does not alter.

Capping a chimney off with a slab is well not may favorite at all. If you decide to cap your chimney off yourself please make sure you use the correct ladder safety. One old and virtually free method of capping off or sealing a chimney that is generally no longer used is to make a lead cap. Place the end of your tape measure against the side of the flue which is the clay or metal tube coming out from the top of your chimney.

Take measurements for the length width and height of the chimney s flues. You may need to use a screwdriver to loosen screws holding it in place. Climb onto your roof to inspect the chimney. The rain cannot get in but it is not sealed air tight which does allow any inside moisture to slowly get out.

The bottom is even easier. Measure all sides of the. How to close an unused chimney. Extend the tape measure to find the total combined length of all the flues.

If you are only talking a few feet of redundant flue then you ll probably be ok with fully capping after reducing the height with a single vent left in the blocked up fireplace. Other helpful maintenance. Then measure across your flues to find the widest point. Insulating the bottom of the chimney once you ve capped the top of the chimney you will need to insulate the bottom of it.

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.