Hi We are currently doing the roof and the house is fully scaffolded. We used to have a back boiler and gas fire in the lounge. The gas fire was removed and gas pipe capped off, the back boiler is still sited behind the fireplace mantel and has been decommissioned as there is now a combi-boiler in its place. Since we are not using the chimney is it better to remove the metal chimney pot and mortar a slab over it? just thinking whether it provides any ventilation....
You need ventilaton, best way is to remove the gas liner if present and put a pot on top then fit a metal cowl/ventilator if it goes to the lounge fit a cowl just incase you want to fit a gas fire later on. Also need some ventilation in the opening below fit a vent if boarding over opening
Thanks for your reply. Thought so, the mortar bed is all loose so will rebed the metal cowl, a 9 x3" vent was placed in the closed off opening.
that a bit OTT, that's intended to encourage an updraft when you've got a burner below google chimney capping cowl for something like this - just needs to keep the weather out but allow a bit of a flow - at a fraction of the price
Plus,, just in case you want to reinstate the gas fire in the future, don't remove the liner. Leave it in place. . You'll need a vent low down on the chimney breast (in the living room) though to allow some airflow.
best to remove liner as it will be no use, new appliance requires new liner, now there is no heat going up it it will just deteriorate and the flue will be colder less airflow outside the liner. If your happy you will never use it again you could knock a couple of air bricks into the side and slab the top over or fit pot and cowl as above (not silly spinning one)
The picture below shows the chimney stack, the gas terminal above was fitted (5"). A number of bricks on the top course of the stack were loose, so we have removed them and are going to relay a course of blue engineering brick on top. We have purchased this chimney and 'pepper pot' to go in its place. Just to check, i will remove the liner and install the pot above.
yes thats it use sharp sand in the mix and bit of liquid waterproofer make sure the motar is nice and smooth stop the moss growing and allowing water to stand. Cement in that peperpot and or silicone the joint or they will let water in it just runs off into the pot. I dont like them they are expensive and not very good at their job if fitted incorectly.
Completed chimney pot Yes can see how the design of the pepperpot will allow water to enter. Ran a bead of silicone around the underside, so hopefully it wont allow water in. Got builder in to do the top layer off engineering bricks and flaunching.
Well, thats a very good idea to prevent it from rain. Have you hired any professional to installed this ? I have also installed a chimney recently at home by chimney genie. They are good at their work. You can check out the post here.
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