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We're re-doing our heating system. In a new downstairs extension we have a thermostat controlling UFH running off a manifold that's separated using a motorised valve. Upstairs we have 3 zones with thermostats controlled by actuators on a second manifold. In the 2 rooms and corridor in the house...

We're looking at fitting a towel rail in our bathroom as well as underfloor heating. I know some UFH companies talk about plumbing the towel rail into the circuit. It's a suspended floor, so the UFH will be running at ~60C. If I was to plumb into the UFH, I assume I should attach a new port...

I was hoping someone could advise on what I should do for insulation between floors. This is a suspended timber floor, both sides of the floor are heated space, and we have underfloor heating attached to the underside of the floor boards. Please can someone enlighten me as to what the...

My reply from BCO was as follows: "75% of fittings should be fitted with low energy lamps LED bulbs are acceptable." So it sounds like I've got the all clear. Whether that's regulation or an allowance he's made I'm not sure.

Thanks for the extra info. I've dropped an email to my BCO explaining the situation, he's a pretty reasonable bloke so hopefully we can come to an agreement. I see no reason why I'd ever switch back to Halogens, now decent GU10 LEDs are just £5 a bulb for 460 lumens at 5.5 watts, it's...

It does seem a little crazy. Most of the energy efficient fittings I've seen take CFLs, I'm planning on fitting lights that are twice as efficient as that, and I'm not allowed because of the regulations regarding efficiency. Maybe I'll have a chat with the BCO. With regards to workarounds...

I've just been having a chat with my electrician about required work in our extension, and he said that 40% of new lighting has to be energy efficient fittings. I said can't I just stick in normal fittings and use energy efficient bulbs, and he said no, it has to be the fittings. Now...

I thought I'd have a play with the heat loss calculations, and I think I'm right is saying: UValue x Area (m2) x TempDifference (C) = heat loss So if we're looking at 1m2 over the course of a year and the cost of a 0.01 U-Value differences with an average temperature difference of 10...

Thanks guys. I never discussed skimming the Thermolites with the BCO, we just said we'd dot & dab and that was that. According to this: http://www.british-gypsum.com/technical_advice/u-value_calculator.aspx It looks like going with skimming the Thermolites we we'd increase our U-Value...

Hi All, We've got an extension that I'm doing with my brother & some other assistance. Our walls are 100mm cavity, with a brick outer, 100mm rockwool full fill cavity and 100mm Thermalite Hi-Strength 7 blocks for the inner skin. We were planning on doing dot & dab, however, we've currently...

Thanks for the constructive replies - I found some wiring diagrams buried on Wavin's website which detail the setup they suggest linking the thermostat to a motorised valve and the pump, and then have the multiple port manifold. With regards to those stropping about quotes, I was originally...

A bit more info. They are wavin parts that I'm looking at. And going through the 'quick calc' on their website, for the downstairs system they suggest a 2 port manifold, I have just noticed it also suggests a 230v thermostat and no actuator. So I'm guessing that the thermostat links to and fires...

Hello all, I've received several underfloor heating quotes recently, with the intention of just using them for information and then sourcing the parts and installing myself. I can do it much cheaper that way. I have one question however. Downstairs is a single zone screed floor with an...

I wasn't planning on letting it leak, it was a just in case scenario. I was planning on some kind of membrane, I'll take a look at what you've suggested.

As we can dig straight in, I was planning on having a gentle floor slope so that any water that enters flows out under the door, this seems like the most sensible option to me. Sounds like my retaining walls might need to be thicker than I had imagined however!

Hi All, We've got a fairly small garden, but really need a shed for bike/tool storage etc. I was going to build a shed using our valuable garden space, but then had a cunning plan! Why not build underground. This is more sensible in our garden then in many places, as the garden has a...