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Planning to heat a new-build 18sq m extension with wet UFH but without resorting to an off-the-shelf kit. I have several reasons for not wanting to buy a kit - I think they're generally over-priced for what they contain (I've seen standard looking £60 CH pumps thrown in with a couple of...

Our building contractor has nearly completed block & beam floor which spans over an existing sewer pipe. Having just had a quick look around before everything is covered in screed we noticed said smell that wasn't there before. What's the best way to raise the obvious concern that someone may...

So underfloor ventilation is necessary for suspended floors - be they timber or concrete. Our extension happens to be concrete beam and block. Fine then, telescopic vents would be the usual solution to bring the vents up from below the beams up to the outside walls above DPC level...

We're building a single storey, 5m x 4m flat-roofed extension to our kitchen (rather than a typical bolt-on conservatory) as we want to be able to use it all year round. It has floor to ceiling glazing on three elevations to make the most of the central garden setting. The otherwise...

Our house walls have a cavity formed by two leafs of lightweight block with an external facing of rough cut stone. A new extension with a flat roof is to be built out from such a wall. This requires a cavity tray to be inserted along the roof line but all the ready-made trays I see are designed...

A 2 year old (just out of warranty!) boiler has been throwing E125 since the day (literally) my Mother moved into her newly-built house. The fault has been raised with her Home builder who have called in Potterton engineers three times now as well as numerous visits by their own snaggers. Over...

Three-month old GlowWorm Flexicom 30hx occasionally fires-up with a window-rattling, door shaking boom. Checking the diagnostics it shows Average ignition time=1.5 secs. and Maximum ignition time=4.4 secs. No Unsuccessful ignitions are logged. I've never had a boiler do this before, is...

In another post of mine we were trying to resolve a problem where air was briefly getting sucked into the primary whenever the pump started. Having verified the correct layout of pump, feed and vent many people have been scratching their heads trying to figure out why the air gets in (in...

While trying to figure out the cause of my central heating woes I'm wondering if there's a useful improvement that could be made to the current type of system: Having TRV's is clearly a good idea: All radiators should have them fitted to allow individual rooms to be set to a preferred...

Alerted to a problem by the outside overflow from my H&E tank, I discovered that during a recent visit my plumber had deliberately raised the F&E to submerge the expansion pipe. The water in the tank was really hot when I inspected it. The motive I think was to cure air getting into the...