Recent content by Roddy Young

Can anyone explain why my 2 watt christmas tree lights only have a G rating?

"so how can we integrate our homes, to increase comfort and reduce costs" You ask a general question to which there is a general answer: insulate and draughtproof. It really is that simple.......in new builds. A real challenge in older houses, though. We live in the south of Scotland, in a 10...

If you are able to, drill a smaller diameter hole right through the wall from the inside. Then go outside and drill half way through with the larger drill. Finally drill with the larger drill from the inside. Hopefully they should line up OK.

You only mention the exhaust. Both exhaust and intake should be on the same wall or roof about 2 metres apart. This prevents wind blowing into one without being "balanced" by the other.

Minor but important concept to grasp: a 100 Watt lightbulb gives out 100W of heat....... as does a 100W motor doing the mixing, a 100W old fashioned TV, etc. Anything doing its job within a closed box (house) emits heat and that heat goes into the box. The exception is something like a tumble...

It does seem counterintuitive but I guess someone at Rehau discovered it was good to circulate the water around the floors with their pump (imagine both boiler connections shut off....) and top up the temperature as needed by the bleed of hot water through the thermostatic valve bottom left...

You have had the pump itself checked, so if it's not working you will need to get a meter and check its supply. The red box should do the switching but it, in turn, needs a supply. Maybe that's not being provided by the controllers. Our controller is a long box with leds which light to indicate...

Hello, Our UFH is identical, also labelled Rehau. The boiler feed is to the bottom via the thermostatic valve as yours. The thermostatic head (bottom left) should be set to about 30 or 35 degrees. It has a capiliary tube going to a capsule at the right end of the lower Manifold feeder. One...

Air can only leave the room through your venting system if fresh air can also get into the room. Open a window in a nearby room and see if there's any difference. Opening a window in the bathroom itself will allow the fan to suck fresh air through without removing the moisture laden air. Roddy

We built our house 12 years ago, well insulated and airtight with a heat recovery ventilation system. Our builder had a lot of experience in low energy houses and underfloor heating was taken for granted. He was very keen, however, to reduce the thermal mass of the poured floors and so used...

I totally agree that this is a poor design. In my last house the motor burnt out after only 7 years which wasn't a great surprise. Any time I touched the motor it was energised and very hot. It sat on a hot pipe which added to the problem. At that time, c1995, the Honeywell motors were difficult...

We used Multipanel, which is a sort of plywood base for one room and https://www.wetwall.co.uk/ for the other, which is nearer to a fine MDF. They are, of course, both waterproof ! I don't know if they are still made in the same way nowadays. Roddy

PS - that was 12 years ago and they both look fresh to this day! Roddy

Hello, No I don't have much experience of these - just the 2 bathrooms when we built our house. Roddy

Wall panels every time! They are usually dead flat so very, very easy to wipe clean. They are also very easy to seal neatly to the shower tray using silicone and a tool like the Screwfix: "No Nonsense Smoothing Tools Straight Joints (92313)" Some have a little texture on the surface and most...