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Ok, so I go for heat only boiler with cylinder. Would that be unvented then? Don't want a gravity fed shower etc.

To be honest that is where my first thoughts lay, unvented system as you say. After talking to builder, heating engineers etc, they seem to think a high flow combi will work adequately. That said, Gasguru, could you suggest a system boiler and cylinder for the job? would a 180litre cylinder...

Hi, replacing tanked system and want a good high flow combi. 4/5 bedroom semi-12 rads. 1 bathroom 1st floor shower room 2nd fl/loft Boiler going under stairs on ground floor. Current flow rate mains about 18l/min, 3 bar. As i've searched on here and can't really find a current opinion can...

Thanks for your help. Got gas man out.... The injector was blocked.........all sorted, warm house + hot water phew!

hi, sorry forgot to say- fan is running fine.... thanks

HI, just as colder weather has come starting to have a problem with our boiler, Potterton Kingfisher MF. Basically it wont ignite. When it's turned on it just keeps clicking but no ignition. Feels like there is pump operation and i have tried differant settings. The spark is constant and...

ok thanks. just a neighbour said he wasn't having CWI because of the cavity being closed :?

Thanks, was thinking this but can you explain a bit why not

Hi all, we live in a 1927 semi and are thinking of having CWI. Would this be a good idea since the cavity is closed with a row of bricks at the apex of the roof-line?

yep, no hot water, so primatic system. no chemicals. thanks for your help.

yeah, not nice

ok thanks, i'll get back later

i thought having one tank to do both jobs was a bit strange. so no chemicals can be added to c h system then?

there's only one tank in the loft..............???

i'm draining my open vented c h system to add new rads. when work is complete i need to add inhibitor to the system but my expansion tank also acts as the cold water feed to bathroom (shower/bath). would it be safe to add the inhibitor to the tank or should i put it into one of the rads?

protected the pipes with tape Thanks for that- Do you mean duct tape or some other tape?

ok, thanks for advice. i'm tiling part way up that's mainly way i didn't want to box the pipes in.

hi all, i need to conceal two 15mm(grey plastic) hot/cold water pipes, which are running down from ceiling to kitchen sink area. The wall is interior single block, i've dot and dabbed up to pipe work which is now just below the level of the plasterboard. Question is can i just conceal these...

great thanks for your help :)

hi all,i'm putting a velux window in a small, lean-to, pitch roof, of which the span is 2200mm so i'm using 100mm depth rafters (according to building regs is fine for such a small span). will 100mm rafters be sufficient for the velux?