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Hmm, yes an unvented cylinder usually directly replaces your old hot water cylinder so that is a strange one - especially as your property needs upwards of a 210 litre cylinder which is very very heavy !!. If you are being quoted for an unvented cylinder and nothing to help the cold water flow...

@bernardgreen thank you for the explanation - I think we know how they work :). However, I gladly waved goodbye to my vented system last year - one of the best upgrades I have had done.

Yes, you need a decently sized one if you want to have simultaneous showers etc but for the most part they will refill quickly in between usage. And it will increase flow rates and pressure can also be boosted with a pump if necessary.

An unvented system on its own will not be sufficient as your water pressure and flow are rubbish. I see you have plenty of space ?, so to solve this I would install a large accumulator which will provide the cold water pressure that you need to run an unvented system and thus excellent pressure...

Defo not necessary to chase in. We left all of our pipework exposed, used decorative brass pipe clips and left the copper to patina nicely all on its own. Looks great with our styling.

No idea - every job is different. Just make sure you spec a thermostatic mixer shower.

Well the damp is coming from somewhere and if it is not from the bathroom side then it must be from outside. Damp will dry out when exposed to the air but will increase greatly when covered up - by tiles for example. I had a damp floor in my kitchen underneath the quarry tiles after I pulled...

Ground floor external wall. Screams penetrating or rising damp to me. How are things outside ? - broken drain ?, leaking pipe ?

Unvented so it is indeed pressurised with no loft tank. So obviously not gravity fed. You cant pump it as you need to pump both hot and cold and you cant pump mains cold without a break tank. Just run two new feeds (hot and cold) through to where you need them. If your pressure is good enough...

All done, some areas needed 4 layers as they were so deep. I PVAd before each layer and then finally sanded and sealed and its now ready for papering. Very pleased with the result. Time consuming but good. In future I will use a deep fill filler first as I wont need to layer it then to avoid...

Whats this got to do with decorating and painting ??

I may be wrong but I thought cinder blocks was an Americanism

Breeze blocks not cinder blocks

Smartthings is still the way to go. I bought into it last year and it is running my Hive stuff and alarm system too :)

Thanks all. So, what needs to be done here exactly ?

But doesn't a Tundish prevent this from happening as per the text below ? or do I need a different kind of Tundish ? "The Tundish is a plastic cup which hooks on to the pressure relief valve. Its job is to catch the drips from the Pressure Relief Valve, and it is also a water trap to prevent...

Into the sink waste and then into the common waste. We hardly use the bath and the smells do not coincide when we do use it.

They used a tundish for this connection I believe

Sorry no expert here, its a standard size but it does have quite a long horizontal run internally for about 4 or 5 metres I believe, then it exits the house and connects to the waste. It is this long as it used by the bathroom and shower room. We don't get any smells in the shower room (shower &...

The waste shared by the sink, shower & bath enters the main stack on the outside of the building so yes dirty air is getting back in some how but only now and then which is very strange