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PVA is water based and when you put wet cement on it, it goes slightly liquid again and because the cement is more porous than the ply it soaks it up. It would also lose its grip if it got damp which isn't a great idea under a shower tray.

One tip I would suggest is to avoid the temptation to use PVA on the ply, an acrylic primer is much, much better. The same sort as the recommend for self levelling floor compound.

We sell loads of pre-filled and separate elements and they are equally safe if fitted correctly. The biggest risk is not allowing enough room for expansion, depending on the design you can need up to 10%. One way of being 100% sure is to bleed it on full heat. This will release any excess and...

There are extensions which will go down to 20mm available from most good outlets, Screwfix for example http://www.screwfix.com/prods/15531/Plumbing/Radiator-Valves/Adjustable-Radiator-Valve-Tail-Compression

DWTA developed the standard and it is administered by Buildcert so Rustbusters looks good to me.

Forget WRAS they should be DWTA approved (Domestic Water Treatment Association).

Hi, they had just the thing on Dragons Den, have a look. http://www.bbc.co.uk/dragonsden/entrepreneurs/grahamdowney.shtml The website is www.radclamp.com

It's really disappointing when people offer nonconstructive criticism. RadarBailey don't take my word for it or DeltaT, just consider the fact that the the best radiator manufacturers use 1.2mm steel and offer a longer guarantee period and make your own mind up. I'm not peddling anything so I'm...

0.2mm might not seem much but its 20% thicker and makes a big difference in life cycle.

Actually just noticed that the Kudox Premier is cheaper than the unbranded one anyway now that Screwfix are doing 25% off so no brainer! Just did a quick output comparison as well and the Kudox single is about 8.5% higher output than the unbranded and around 3.5% on the double.

Hi, I'd like to think we do the best deal but we only offer packs so that we can palletise deliveries to avoid damages. Just did a quick scan and Screwfix came out top because they are discounted at the moment but you must go for the Kudox Premier ones not the unbranded ones if you don't want an...

There are many 'Eco' rads on the market with eco being economy not anything to do with green credentials. Eco rads have two main differences, thinner steel and shorter convector fins. Good brands like Stelrad, Myson, Kudox, Quinn, all use 1.2mm steel whereas eco rads are normally 1.0mm steel...

Anything can be dangerous in the wrong hands!

Hi MysteryMan, what don't you like the sound of, it's exacly the same as the oil filled ones but much lower cost because you are filling it yourself. The oil filled ones dont have oil inside, they just have water with glycol oil added which is the same as a central heating protector like Fernox...

Hi, you can fit an element to most of the standard ladder types, we sell loads and the instructions just state to leave a 10% gap at the top. To be safe, you can run it to full heat and then bleed it, this way it is a zero pressure on hot and a slight negative pressure when cold.

Thanks for that, when it is all copper though, is there any earth bonding clamp that is not really ugly?

Yes, if the whole bathroom was plastic but the rest of the house had copper, would that allow for no bonding required?

Does anyone know of a way to comply with earth bonding regs on a towel warmer without using the bug ugly earth clamps?

Hi, it can cause a different problem if you do fit a TRV to the towel warmers, heat rising from the under tile heating shuts the TRV off on the towel warmer, best to stick to manual valves or avoid mat directly below the towel warmer.

I've fitted one of the cement coated foam ones from a company called Lux Elements. It was really easy to fit and it's made in Germany so the quality is great. They also do it in kit form with everything included in the pack.