garrymartin

OK. They will cut through a nail, but you reduce the working life of the bit. From the "Tech-Tips" at the bottom of the page - " When encountering a metal object, if possible reposition the drilled hole. Continued drilling with the Nail-Proof WoodBeaver will reduce it’s working life"

Armeg Nail-Proof Wood Beaver bits https://armeg.com/products/nail-proof-woodbeaver/ But, to be clear, they won't cut through nails; they will just survive hitting them. So once you hit a nail or screw, you either need to remove it or you need to re-position your hole.

Personally, I'd scrap the PIR and Impey Waterguard and put 60mm Marmox straight to the slab with tile adhesive (possibly another 10mm on top at 90-degree depending on existing floor height). Stick the UFH mat on top of that. A couple of conduits with temperature sensors in them (one for backup).Self-levelling compound over it (fibre reinforced). Tile on top of that. You'll probably end up very close to the height of your other flooring, and it will be a very straightforward buildup.

Does your plot have *any* permission on it? If not, you need to start right there.

The fantastic progress and quality results continue! If you've not just been incredibly lucky, and you're able to share, I'm sure everyone would love to know the process you went through to find and appoint your various trades.

It was just an example. To be honest, I don't know how they can sell a 25m extension cable with 2.5mm2 cores for that price. Costs more than that to buy just the cable! But heh, it's a UK company, and has both CE and UKCA marking. Might just be a bargain! (NOTE they also sell it as a kit with a 5kVA 110V transformer, so specifically for the purpose @saveasteading is looking to us it)

Something like this; 2.5mm2 3-core with 4 sockets https://www.amazon.co.uk/Portable-Blue-Extension-Lead-Cable/dp/B0FVZH1JQD

The cable used in those is listed as 1.25mm2 - you should go for something much heavier duty. Minimum 2.5mm2 considering the distance and use.

Have you looked at different brands of pattress boxes? Perhaps another brand has the same layout holes?

Take a look at this... https://www.e-paint.co.uk/colour-alternatives.asp?cRange=BS+4800/5252&cRef=18+B+29&cDescription=Raven RAL 7024 seems to be the closest Classic RAL match, but note it only has two stars, which means "close, but distinguishable". I have the RAL K7 Classic fandeck and RAL 7024 only seems to have a very slight blue tinge to my eye. As @Bonner notes, 7015 might also be a match for you, depending on your finish. It's slightly lighter than 7024 but still has that slight blue tinge.

Do you have a spare piece of the roofing? Take it to a decent paint shop that does colour matching. They will probably have the RAL charts available.

Great designs by the way. Based on your first design posted, I would have suggested losing the window to the plant room (needed?) and widening the vertical entrance and glazing to balance things out a little on that elevation. Interesting to see that in these designs, there is no plant room window, and in the first alternate, the vertical entrance glazing is widened... 😉

https://www.linkedin.com/posts/roger-lewis-aba461241_press-release-approved-by-kingspan-timber-activity-7383754952692719616-E9b4 PRESS RELEASE APPROVED BY KINGSPAN TIMBER SOLUTIONS LTD Home@ix Ltd acquires Potton from Kingspan Timber Solutions Ltd Home@ix, the housing innovator redefining affordable, scalable living, has acquired Potton, the heritage homebuilder, from Kingspan Timber Solutions Ltd This strategic move anchors Potton’s craftsmanship and trusted legacy within the Home@ix platform, combining tradition with innovation to deliver smarter, greener, and more accessible housing. Home@ix integrates modern methods of construction., technology, and finance in one seamless solution. With six years of proven operational data, the company has cracked the code on scalable delivery while keeping customers at the centre. From Stylem@ix entry-level homes, to Superm@ix family builds, and premium Ultim@ix by Potton, the platform makes sustainable homeownership both affordable and customisable. Through its finance arm, Moneym@ix, customers benefit from integrated mortgages, green finance options, and upgrade opportunities, making homes more accessible than ever. “The housing market is broken. Home@ix is here to fix it,” said CEO Designate RH Steve Baker. “With Potton’s heritage as our foundation and Home@ix as the tech engine, we’re setting the new standard for modern living.” For further information, visit [website] or contact rogerhome@ixnow.net

There's a webinar on Youtube from National Grid about the project. It's basically for retrofit. The idea is that when properties need to be upgraded to support EV charging and heat pump usage, they would provide three-phase at the boundary, and then you can cable to the EV charger and heat pump *externally* without having to go into the house and then back out again. They would just disconnect your single-phase cabling to the house, and then reconnect it to one of the phases in the new three-phase boundary location.

Almost certainly a RAMPA screw (not bolt 😉), though I'm not sure what specific type. It's a German brand, but is often used in Swedish (and other countries) staircase manufacturing. https://www.rampa.com/eu/en/RAMPA-STAIRCASE-SCREWS-TYPE-TKH/3490900010100 https://www.junoindustries.eu/en/products/rampa/screws-with-metrical-thread/rampa-staircase-screws-type-tkm.html Maybe give RAMPA a call or send them an email with the photos? If you do, measure the head diameter, and the diameter of the screw, and if there is writing around the top (possibly the screw type), tell them what it says. RAMPA GmbH & Co. KG Call us: +49 4155 8141-0 E-mail: mail@rampa.com