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What kW rating is that one? Isn't that a cylinder at the bottom?

Many thanks, So you're saying the unvented cylinder system is more efficient/cheaper to run than the combi? Or do the pros and cons of each system mean they're about even? As I say I'm looking fir the most cost effective system, including install and running costs

Yes there could be room in the garage, Is a cylinder system much better than a combi efficiency wise? The combi only runs as and when the hot water is required right? Whereas the cylinder system boiler heats the water for period of time usually morning & evening, then the hot waters stored...

When you say not going to be much in running either model, do you mean cost wise? Or output wise I.e. Both will give similar performance/output? The gas feed comes into the garage, a couple of meters from where the boiler is going to be situated, so I suppose it's less of a concern having...

The water pressure is 6 bar, the water meter is in the garage. There is a regulator on it so Im not sure if it can be increased (or whether that's is advisable). So everyone is of the same thinking the 30si won't be sufficient? We probably wouldn't be running more than 1 shower at once...

The house doesn't have a loft as it has 2 large dormers front and rear that run most of the length of the roof. I didn't realise combi's couldn't provide enough flow rate for multiple taps/showers running. I assumed the bigger the combi the more it would supply :-/ Are there any other options...

Thanks for the reply Tony, We are set on a combi as we have no other space for a cylinder. I'll speak to the installer of the 30si, is there another combi you'd recommend that I haven't listed? Does the higher the kW rating equate to higher costs?

Hi:) Renovating a home we've bought and were having the boiler and CH system replaced (going from microbore 1 pipe system, to 2 pipe system). Received a few quotes, one quote is using Worcester greenstar 42cdi, the other Worcester 30si. The boiler will be mounted on the garage wall where...

I'm thinking that is the way forward. What is the DG?

i'm assuming the insulation is the same as in the eaves which is this polystyrene type sheet so would it be best to just rip down the old plasterboard and start as if from scratch? we have only just purchased the property and don't plan on moving again, i want to improve the insulation up...

Thanks for the reply Do you think there is any benefit to overboarding using insulated plasterboard on top of the existing plasterboard? Or should I bite the bullet, pull down all the plasterboard and install cellotex/kingspan between rafters/joists then fit new plasterboard?

thanks for the reply. sorry to keep asking what are probably stupid questions. do you mean when the dormers are being converted, look at the current insulation in the areas i've shown in the pic? and then if there isn't deemed to be suitable insulation then it could be worth doing? i realise...

The dormers are being converted to a warm roof design, with kingspan on the cheeks, front faces and the flat roof section. All the windows does are being replaced with new upvc. I want the rooms to retain heat better, will Overboarding in the areas shown improve the insulation?

is it possible to overboard using insulated plasterboard directly onto the ceiling of a dormer bedroom in the areas shown, then replaster on top of that? looking at ways of improving the insulation up there as it is pretty cold.

Ah ok, this is sounding more complicated/expensive than I first thought. I'll have to do some more digging then:-/

Many thanks for the reply. By techie bod, are we talking an architect?

Hi:) we have just purchased a 1980's house with large front and rear dormers, and i'm hoping for some advice from the experts please. were having quotes on getting the dormers done in epdm with new plastic cladding at the minute , but the quotes seem to vary wildly, with detail on whats...

hi:) i have an ideal standard close coupled toilet shoe horned in to a small under the stairs area in my 5 year old new build. bit blurred sorry the toilet continually runs heavily, if i pull the float all the way up it does not cut off the water am i right in thinking the fill...