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Hey guys, anyone recommend a way of detecting UFH pipes inside the screed? I left some length of pipe sticking out for me to put sensors in later but I think the guys pouring have stood on a couple. So will need to find a new method of getting temp sensors in. 16mm PEX pipe laid in 50-60 cement based screed. Thermal is the only way that pops inside mind but not easy to get equipment.

I have a few windows and my garage door with white marks running down them, which I think is the adhesive coming from my pre cast Robeslee lentils. Any suggestions on what chemical I should try? Isopropyl, WD40 etc? Garage doors are anthracite aluminium.

I went for the Cortizo and installed a few weeks ago. Seems good for the money, will be very slim sightlines once the floor and plasterboard etc is in.

Anyone heard any more updates on this product? I will be in the market for an ASHP in the coming months.

I spoke to someone today who said that there must be an open vent somewhere in the system. With this in mind a vent could be attached to a ridge tile. I'll have a play around and see what way I can arrange stuff.

@ProDave the joists are JJI style and run left to right on the screenshots, at 400 centres. The loft is a cold vented one. Anyone care to have a sketch of a better solution? I have no experience with soil waste so would be good to have a decent idea or plan before I approach building control.

Roof is on so that will be a challenge now Dave. Any suggestions on how things could be rejigged to tidy things up?

Hi guys, I am looking for some advice on how to tidy up my pipes. See attachments 1 and 2. These show the waste pipes for all upstairs plumbing, however this means a waste pipe running horizontally across the outside, which I would very much like to avoid. a I am wondering if I can run the toilet waste on the room marked Bathroom, to something similar to whats shown in attachment 3. This would mean a 90 degree bent on the waste run, so I would need two rodding access points I guess. Or can anyone else come up with any tidier solutions? Thanks

See towards the end of this thread.

Thanks @joe90, yes I will probably do the same then, the two main partitions are load bearing so concrete drawf walls under anyway so going through a doorway here is of no benefit anyway. Noted thanks @PeterW

Both quotes direct from them, perhaps PSW offering large discounts on their prices quoted in Ebay. Pipe - just from general googling and here.

Thanks @ProDave& @PeterW. I might have an attempt at the spiral and see how difficult it in. Maybe for the loops that are not very square I'll stick to the serpentine one.

F My quotes from both for comparison give very different numbers. PSW and Wunda quoted for Grundfos pumps, UPM3 and EuP, unsure if any different. PSW was £38 per 100m Pex Al Pex. Wunda Pert-Al-Pert is £63. PSW came in at £1097 delivered for my system, this included 140 lengths of self adhesive rails. Wunda were £1366 . Removing the pipe rails this makes Wunda £365 more expensive, not including my smaller pumpset up upstairs. So a significant price difference on my quotes, equivalent spec and arguably better pipe. Only thing is the warranty but at £365 saving its worth the risk.

I had a couple of companies provide a design with their initial quote. I think I can do better using loopcad myself to be honest. I found cheapest was PSW Trade Supplies.

Anyone have any feedback on what pattern you or your installer went for? Thanks

Have a go with the MIT app builder. https://appinventor.mit.edu/

Yes you basically make them whatever size you want, the trusses will be designed around them. Here is a screenshot of part of my truss plan showing 4 x roof windows 1140x1180mm. They are doubled each side and the truss that goes through the middle is cut onsite and bridled (600mm centres).

If I was in the market for one I'd consider these guys, been using their nails in my old paslode and they have been decent. About 30 quid a box. https://supafixings.com/

We just went every 600-1000mm, straightening as you go. Just have someone at the end looking down the length.

https://www.bcprofiles.co.uk/thunderbolt-concrete-fixings-122mm/ I use these for most concrete fixings I do, 5 (or was it 5.5mm) SDS bit down through and then screw them in. Recommend a nice long 300mm SDS bit.

Thanks all. I do not have an e ay invoice @newhome, it is a paypal invoice. I could maybe raise a case on paypal, asking for the VAT amount back unless an invoice is provided. Failing that and failing the seller helping out I will go with the option of adding the VAT number myself, possibly with a note and copy of email agreement.

Sorry I should have provided more information. I found the seller through ebay but the purchase was not completed through ebay. The transaction was done via email and paid through PayPal (they sent invoice, no vat details were on it). VAT was added to our agreed price and a quick company house search did show them as having a VAT number. @mvincentd I have not taken that approach yet, wanted to see what my options were first. I have not spoken to anyone via phone, the only number I have goes to someone polish.

I purchased doors which I have paid for and received. However I did not receive a VAT invoice and the company is ignoring my requests to send one. What options do I have? I am keen to get this back as it is around 600 worth of VAT. I have an ebay invoice stating the amount paid but VAT is not itemised on it and the companies VAT details are also not on this. I have a copy of the emails agreeing the pre vat price and then the price once VAT is applied. Thanks

Received a drawing on one of my UFH quotes and thought I could probably do something a little more suitable for us, so see below. UFH 1 is the companies drawing. I have done two versions, one as a Serpentine, letting LoopCAD do most of the design. Second is a Spiral for most loops, drawn freehand. Both my ones keep the loops a little shorter and I think better zoned. Anyone care to comment and make recommendations? UHF_1.PDF Serpentine.PDF spiral.PDF

Joist manufacturer was happy with the extra loading so I will go for a separate 2 port manifold upstairs and have the pipes covered in a PUG mix screed. Thanks