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Thanks Rob & oldbutnotdead for your input. On consideration I've decided not to change the tank. The current one is fine if a little large but if any future buyers want a bath it's already there rather than them having to switch from my smaller one. Also it's making more work grovelling around...

Thanks, we have no plans to refit a bath and I want to make more space by removing the existing tank so for the new tank size I should allow for 10% more volume than the hot water cylinder?

Hi all, is there a minimum size loft cistern for supplying the hot water cylinder? We don’t have a bath now, just an instant shower so only use hot water for a few dishes, hand washing & similar small jobs. Do the regs specify a minimum cistern size please? Ta muchly.

Boiler is Glow Worm 15hxi in kitchen. Flue is on external east facing wall. The rain usually comes in from the SW.

Thanks all, sorry for slow reply, net v busy just now! Flue is coming horizontally through a vertical wall. I thought maybe a curved steel cowl as for extractor fans would stop falling & wind driven rain. Never had this before in our 10yrs in the house!

Today our boiler kept tripping the RCD but with no fault code showing, and the engineer found the fault to be moisture around the area of the pcb. Once dry everything was fine. I've never seen this fault and he suggested it could have been rain ingress into the flue as last night was very wet &...

We have a Glow worm 15hxi boiler. Recently it had fault code f5, overheat fault. British Gas engineer changed both thermistors & overheat stat. Following morning F5 again! I reset the thermostat cut out thinking that if there is a fault it will cut out again but heating works fine. Now when I...

I’m removing a fireplace & understand the chimney should be vented by a grille. I’ve also heard of chimney balloons to stop draughts. Is the venting mandatory? Would the house structure be compromised by fitting a balloon and blocking the flue? Many thanks.

Thanks ianmcd I thought balancing was achieved by opening the inlet fully and restricting the outlet to the rad with the ls until the correct temp drop was achieved. How might I do this with the ls on the inlet? Is balancing necessary at all with TRVs? Thanks. :?

I just fitted a new TRV to the rad outlet for convenience and because it’s reversible flow & the instructions allowed it. The rad warms up fine but will it be as efficient as fitting the TRV to the inlet? Do rads with TRVs need balancing? If so can a rad with the TRV on the outlet be balanced &...

Thanx one cog (sounds like my bike!) What size bead of silicone, distance between beads & setting time do you suggest please? Thanx.

Thanks Richard. The ply will be level, I'll make sure of that. Any other reason for mortar?

Hello peeps. I'm doing a DIY shower & the tray instructions call for a mortar bed on the plywood. As the bottom of the shower tray is flat & it's going on marine ply what's the point of this? Would I build in any problems if I did without it? Thanks

This sounds like the best way to go. The stat is on the hall/living room party wall so just a hole & a bit of wiring. I’ll try that first as it’s free! I’ll leave the second timer idea on the back burner & chase the draught proofing. Thank you all for your very useful and knowledgeable inputs...

Cavity wall insulation is applied but I think not too good in places. Phoned a company & they won’t try to put more in. Draught proofing is in progress but I still don’t want the hall stat overriding the boiler and cooling the other rooms. Maybe I could move the stat?

There is only one room thermostat which is in the hall. This is a cold area due to its north facing wall. This is turned right up to avoid it overiding the boiler stat thus preventing the boiler from running the other rads as we don't need this space at 70c but want higher temp in the other...

This is for heating only. Being a retired couple we want to cycle the heating in the daytime, ie 1hr on, 1hr off etc. to try to keep the bills down. There is no requirement for more than 1 hot water cycle so I’ll go with a single channel programmer. Allowing for morning & evening heating the...

Hello Sparkies, I wish to have more than the 3 on/offs available with the current Drayton 241 programmer. Is anyone aware of a programmer that does this? Alternately is it feasible to connect a second programmer in parallel so they run separately to give up to 6 on/offs? Might there be...

I’m fitting a 1200x800 quadrant shower tray & find marine ply a bit pricey, especially as I only want 1300mmx800mm so would be left with the rest of the sheet. It’s been suggested that WPB or softwood ply with a double DPM covering would be ok. It would of course have the standard mortar...

Hi everyone. My TRVs close off as they should at the required temp setting. But they wait until the room is quite cool before opening again to allow more hot water into the rads. I would prefer it if they cut in sooner and controlled the temp more evenly without such big peaks & troughs...