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Thanks for the quick reply. I have found some holes above my combi boiler (it was installed in the cupboard where the old expansion tanks was. Old pipes from the now empty tank in the loft ran into the space and when removed the holes were not blocked up - they are now as the cupboard gets...

Not sure what the sheeting is called but it is underneath the tiles. The house was built in 1975. Where is the best place to put vent tiles?

I blocked the one vent hole from the combi exhaust into the roof space - the condensation is still there. Intend putting a seal around the loft hatch but am now running short of ideas. Recap: - Loft & cavity wall insulation - fitted some years ago by the previous occupants. - Condensation...

I believe I have found the cause. The combi boiler exhaust, installed by the previous owners has its exhaust 1ft from the eaves and a vent hole. It must be this as hot moist air goes straight into the roof space. I will be blocking that vent (there are planty others) and am amazed they never...

I recently went up in the loft to get some Xmas things down to find water (condensation) covering the whole of the plastic lining under the tiles. Droplets were dripping down on everything and some things were showing signs that this was not a one off. I have glass fibre insulation, double...

Thanks BentheBoatie, Found the drain points and turned off the feed to the heating (leaving water supply intact). Drained using garden hose. Your advice V useful and job done without spillage. I realised I have an extra expansion tank to play with and was able to refill and...

I have a VAILLANT VCW GB 242 EH Combi boiler with inverted loop radiators downstairs. I want to put thermostatic valves on every radiator and move one radiator to a different wall downstairs. I will need to drain the system but as it is closed at around 1.5bar? how do I drain and refill?