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The grundfos circulating pump in my heating system is stuck on either 2 or 3. I can't tell which it is but it neither speeds up or slows down when the selector is turned between these two positions. In position 1 the pump doesn't turn at all. Has anyone come across this before and if so how can...

I drained down my heating system two weeks ago and still can't get the air out of it! It seems to congregate round the pump and can get so bad that the pump runs dry and the boiler cuts out. If I run the pump without the boiler on, the air dissipates and it goes quiet but as soon as the boiler...

I have a glow worm 30hxi system boiler badged as british gas 330. The heating is conventional vented with a hot water cylinder. I have a combined feed and vent, drayton 3-port valve and grundfos pump. The problem is that the boiler makes a loud bang if only heating is selected - and I mean it's...

I have a 3 year old glow worm boiler badged as british gas 330 with a vented cylinder. The boiler makes a loud banging noise after being on for about 15 minutes. The bang is followed by a rushing noise, then the boiler switches itself off. It comes back on almost immediately and will run for...

I need to move the feed and expansion tank of my vented system to a position above a new loft extension. The space is basically tiny and won't allow the 400mm needed for the expansion pipe above the tank. I've heard of combining the f and e which would seem to be a solution. However the pipe...

I have to re-site the f and e tank in the loft due to a loft conversion. Ideally I'd like to put it as high as possible just under the ridge, however there's very little room there now. What is the minimun height that the expansion pipe has to rise above the water level in the tank please? thanks.

Hi, I'm building a cat slide dormer to house a set of stairs. The cheeks of the dormer have to be covered in plain tiles. I'm unsure how to deal with the sloping roofline? I've seen on tiled gable-ends that the tile that sits directly under the sloping eaves is a tile and a half cut and...

Just built a dormer for an upstairs bathroom. The 110mm waste pipe must come out of the tiled dormer wall to join to the existing soil stack. Does the soil pipe need a flashing where it passes through the tiles? What would this flashing look like? thanks.

Just built a dormer in roof and want to run a 110mm soil pip out of the dormer wall to join the new soil stack. The dormer wall is tiled. Is it necessary to fit a flashing to the 110mm pipe where it comes out through the tiles? thanks.

Having a loft conversion done and thought I'd put the radiators in myself. The most convenient place to tee from is the flow and return soon after they come out of the boiler (travelling through the upstairs floor joists). However this would be before the flow reached the pump. Would there be...

Can anyone advise me how to do flashings for a tiled dormer I'm in the process of putting up? The sides and the face of the dormer are fairly straightforward but how do I form the corner sections? All help very greatfully recieved.