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Thank you God ( I've always wanted to say that! ). They are just finished with a bead of putty ...so its quite thick. I'll have a look at the butyl option. Thanks again

I have softwood single glazed window frames ( about 25 years old ) in a very punishing south facing elevation and the putty shrinks and cracks a lot, on the bottom bead particularly, and needs replacing. I would be grateful for any thoughts as to whether linseed oil putty is the best replacement...

I have to replace my hot water cylinder but have 450 mm MAX space available. Its an indirect, vented cylinder I need, does anyone know of a good source at reasonable price? Cheers, jim

I have tried this this evening. When I loosen the square head on the drain cock the water pours out from around the thread .....challenging with the fitted carpet! ....how do you stop that so the mains pressure does its job and re-fills the system?

Jamie, many thanks, I have just 'rodded' the line as far as I can from the exp tank without any success! Must be further down .....looks like it joins the large diam pipe at the top of the heating coil in the HW tank? Nath ...again thanks. I think the system is too ancient for a auto vent...

Thanks for the quick replies .....sound very likely as the exp tank looks very stagnant and has rust residue...... would welcome any suggestions as to how I go about unblocking

I have a heating system about 18 years old with a potterton boiler. It has gravity hot water and a pumped system to the radiators. A few months ago the hot water stopped heating the tank up but the rads were fine ( I left this alone and relied on the immersion!). Now there seems to be a lot of...