Recent content by SpyDiy

Thanks. In the cavity wall above that hole there seems to be a white plasticky material running across the cavity (not foam). Does not completely seal the cavity, maybe inch gap. Not sure what it is. This is above a built in garage where the oil boiler is. Concered about condensation coming from...

Do cavity walls not have to be sealed?

Have a joist inserted into cavity wall with a very large gap in the brickwork. It is around a chimney in the attic. Should this be sealed. The joist seems to be going into the hole the depth of the brick. Concerned as about to have my loft insulated with another 200mm of insulation that will...

Do not know how it would know. maybe sudden loss in pressure as TRV opens (shuts off if pressure to high as blocked). Room stat in in dinning area (connected to kitchen) so could do that, but, pump company saying no bypass required so hopefully ok

Just checked with the water pump manufacturer "Embrass Peerless" and they confirmed what he said. Their pump does shut down when there is no flow and a bypass is not required. Must be a very very new thing as no mention of this anywhere on internet searches I did.

ok

Do not know if pump overrun can be turned off , from looking at warmflow manual only seems to allow you to change it from auto to a fixed delay/duration.

John, does that mean a bypass not needed then and will pump still suffer?

Hi, Recently had a regular Oil boiler with no internal bypass (warmflow B21) and new radiators installed via a funding grant. Grant surveyor specified all radiator to have TRV's. Plumber left one out in Kitchen. When I checked work noticed TRV missing but on specification. He said it was needed...