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As previous answers have suggested, lots of systems are not set up right. If the radiator return pipe doesn't heat up within 15 minutes then you might be able to balance the system. http://www.diydata.com/projects/centralheating/balancing/radiator_balancing.php If the radiator pipes (flow...

My LA Conservation Officer is against putting concrete and gypsum on the inside of solid walls. Says it can affect the integrity of the brick. It seems to be fairly common though. For a listed building he has the authority to tell LABC to take a running jump for Part-L (he suggested a lime...

We were going to redecorate, so my daughter had a graffiti party.

Point taken. That wouldn't be the 'energy saving light bulb' variety though and probably not seen in DIY sheds.

I have just taken down 4 wall lights that were there when we moved in. The extension was built in the 90s and the the lights are dated 94 and 95 (probably the same time). The wiring is T+E but every earth conductor is cut! The live chocolate box connectors are sitting in an open channel just...

Howlers from extension

Only that their tubes are too short to be efficient. ;-) Correct me it I'm wrong, but I thought that longer fluorescent tubes are more efficient. Coupled with a high-frequency, electronic ballast and a 6' tube can be about twice as efficient as a bunch of CFLs and no flicker. Also many of the...

I agree with bernardgreen: I think you should expect to install several hundred watts of downlighters (10 to 15x20W) to match a 50W fluorescent strip light lighting levels. In our last house, the living room had nearly 1kW of tungsten downlighters. Many lights will also help with the short...

First, I am an engineer rather than a plumber, so I cannot answer your question about boiler makes. I just want to point out that not all A-rated boilers designs are as efficient as they might be. The SEBUK ratings suggest that 90% 'seasonal' nett efficiency is good. However, some boilers are...

Going down the same trunking is not ideal but adequate for 32A. A 32A supply is generally suitable for domestic cookers up to 15kW.

Sorry. I should probably said that all 'concealed' cables need protection.

My understanding is there are different classes of protection:RCD - protects from shock by either cable penetration or misuse earthed conduit (or other concentric earth) - protects from shock by cable penetration (by blowing fuse on penetration) mechanical - prevents penetration (practically...

You didn't say if these are household or commercial. For household cookers you could just use the 32A circuit for both cookers (up to 19 kW using the standard diversity calculation). You could put a 10.5 kW instantaneous water heater on the other circuit. ;-)

Installed price is only the beginning, modern boilers need expensive routine maintenance. German regulations seem to be quite strict and a regular service is required by law. So more expensive boilers, like the Viessmann Vitodens 2000W, advertise a 5-year service interval as part of the cost...

I wonder if the end of the pipe is below ground level and if that makes any difference. If the pipe discharges into the open air, it will be exposed to freezing wind.

I've had the local Conservation Surveyor round this morning (deep joy). It looks like I have to go with Listed Building exemption to Part L for thermal elements and have the external walls re-plastered with lime-based plaster. His suggestion was to mix it with vermiculite to give some thermal...