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What insulation should be used in the floor voids? The spec states '150mm mineral wool' and I can't get hold of the building inspection. Can I use Loft roll? E.g. Rockwool? Same question again, what should be used in the studwork? Spec states '50mm insulation quilt'. I presume not cavity...

How do we pipe into separate zone?

At first fix stage, how do we turn on the towel rads in the Spring/Summer but without having the entire CH on? System will be indirect pressurised cylinder with system boiler. Have read about 'dual' rads which switch to electric..are there any other options??

Going with the joulle !

Thanks John, just got the same response from the hrv company. Cant believe there is only terracotta & slate to chose from. Wondering if I could paint/spray the tiles that the hrv co are supplying? Had a brand new roof and don't want to spoil it with 2 different coloured tiles. They're...

Could I use the adaptor 160mm one end for the heat recovery ducting to plug into 100mm for the official Gemini vent tile? Is it that simple?

Growing family, don't plan to fit another system for many many years, it's going in the garage so no weight restrictions, better to have too much than too little!

Can't go with vaillant unistor anyway they only go to a 300l, I need a 400l

Thanks will take a look, looks like they do in frame :-)

Where can I get a really decent in frame kitchen for sensible money? Don't mind putting together myself. Had a look round all the sheds, all the doors lack detail. Been quoted £18k just for units from a bespoke place no chance!!

Have done, they only do a tile vent for 100mm The only colours I've found to fit 160mm ducting are black, slate and terracotta. Nothing like our brown tiles. We need 2

Does anyone know where I can get a tile vent for extraction that has a 160mm connector. All I can find are tiles that have 100mm or 125mm dia connectors. Our ducting to go out is 160mm. Ideally to match 'Mixed Russet' Forticrete Gemini which is a browny/red. Have called round many roofing...

Thank you

So Joule over Gledhill? Another quote just came in for a Tempests Telford, any thoughts?

Obviously I'm just a lay person and have no experience of plumbing, but rather than just buy the big brands that I've heard of (Heatrae Sadia Megaflow, Worcester Bosch, Vaillant) I thought I would ask for experienced opinions from people who actually fit them and use them on a daily basis...

Are Joulle well known in the plumbing world?

Any brands to avoid? So far looked at: Gledhill Joulle Telford OSO I know Heatrae Sadia is recommended but they are twice the cost (is it worth the extra £?) Thanks

Anyone?

So even if we run out of water we would only have to wait half hour for it to be full of hot water again? :-) We've narrowed it down to either a Joulle or the OSO sc. I have no idea if there is any technical different between the two eg in heat recovery times etc? Could someone please advise...

SO...decided to go with a 300L! Now to decide which brand - OSO SC, Vaillant Unistor or Joulle? Opinions please? Using the Vaillant Ecotec 35kw system boiler