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Madrab, sorry, floor was mentioned earlier. It's floor joists with extra noggins then 18mm marine ply screwed down on top. Totally solid. Inspected tray this morning and it looks rock solid now, ready to tank the walls and get tiling.

So I have now bedded the tray using flexible tile adhesive. I used 1 x 20kg bag plus a bit more and 5 litres of water to make a thick mix and maybe made way too much - the tray is now sitting a good 10mm above the plywood base on a bed of adhesive. Think it might have been better to put the...

I think for sure what's happened is, by putting the weight around the edges, I've bowed the tray a tiny bit while the mortar set. Once I took the weight off, it left a bit of spring at the edges. All stripped now and ready to try again. I contacted the tray manufacturer and they say I can use...

Baths'n'Gas - do you also make sure there is adhesive around all the edges? That is where I got the slight flexing. And is Mapei flexible adhesive ok?

It would great to figure out a way to turn the tray over, fill with tile cement, then put a thin lid on it. Turn it over and place on the plywood, then slide the lid away. Ta da! all mouldings filled and tray secured.

I already have 18mm marine ply screwed down. I cut it to fit the tray exactly. I've taken a couple of pics - the underside of the tray, and what the mortar looked like when I lifted the tray. I can see that the 'flush' parts have squished the mortar down to about 6mm, but there hasn't been...

So are you fitting trays like my one, i.e. not flat on the bottom but full of undulations and mouldings? I have taken the tray up and removed all of the sand and cement, ready to start again. Which flex adhesive do you use, and what thickness do you put down? My tray is 1800 x 760, do you know...

It's an MX Elements tray: https://www.mx-group.com/products/shower-trays/elements/ If you watch this video at the 2'50" mark it shows the tray being ground down so the bottom is flat (in certain areas) https://www.mx-group.com/videos/ Maybe my mortar bed wasn't thick enough? Some people say...

The tray is like this underneath (not my pic). I'm thinking that the machined flat parts are bedded into the sand and cement, but as a result the edges are 'floating' a little and that's where I see the movement.

I am really ****ed off! Following the manufacturers instructions, I installed a stone resin walk-in shower tray onto a SBR primed marine ply base on joists, laid tray onto 5:1 mortar mix with 8-10mm thickness and weighed down tray with 200kg weight. 48 hours later, I'm seeing 1-2mm movement at...

I am about to clad a shed frame. I was going to use 12.5mm T&G boards, but then got worried about expansion and contraction. Will they be ok or should I use Shiplap instead?

Thanks guys, I bought one and the fitting instructions seem straightforward. It'll be installed as low as possible. The tank is directly heated from the stove thankfully. It's definitely going to be easier and cheaper than a new cylinder, can't comment yet on reliability!

My 89 yr old mother has a hot water tank that is connected to her multi fuel stove. I want to add an immersion heater so she can have hot water without lighting the stove. The tank has no immersion boss. I understand that a Howden DH501 will do the job. The tank is installed in a very tight...

I think that would be too shiny.

Yep should have used Rosco and have done in the past, but no time to get any now before the shoot. This Benjamin Moore paint was recommended by a US colleague, and it is really good, a much purer green that I've found from the usual UK suppliers. Just not as flat as I'd hoped. Does talc really...

I am painting a green screen for a video shoot. I'm using Benjamin Moore Neon Green Paint in a flat finish. Unfortunately it's not as flat as I'd hoped. Is there anything I can do to the surface or anything I can add to the paint (still got two coats to go) to get a dead flat matte finish with...

A plumbing firm on ebay is selling an unused 26/32 Oil Combi. It is a room sealed balanced flue version. I think mine is a conventional flue model, but it has a flueless silencer kit fitted. The flue comes straight out horizontally through the wall. Would the ebay model be a straightforward...

Thanks Oilman, do you happen to know if the equivalent Greenstar 25/32 is a straightforward swap? Regarding the refurbished unit, we might in the future look at an external boiler, or if oil goes back to silly prices, a biomass boiler, so I'm not keen to shell out £3000 for a new boiler that we...

Regarding trying a leak sealer - since I know the leak is in the boiler, can I shut the valves I installed to isolate the boiler, then introduce the sealer into the filling loop (thinking of the Fernox aerosol product that comes with a tube that screws on), then run the heating without the...

So engineer says boiler has had it. Leak is a hole in either heat slave tank or the main boiler unit. He suggested a very temp fix might be to try a sealer. If I try this what do I use and how do I add it to the system? I was asking him which boiler to get that will be an easy replacement, and...