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There are positive head and negative head (aka universal) pumps in this range. The negative head is easily distinguished because it has a cylinder on top to store pressure which, when the tap / shower is opened cause an internal pressure sensor to operate and this operates the pump’s relay to...

the span of the joists is 2650mm. an added complication of the situation is that the plan is to make the shower tray level with the rest of the bathroom floor and this means removing the floorboards entirely where the (22mm AKW Tufform) tray will sit. the tray sits directly on the joists (after...

thank you Robin - thats exactly the type of info I was looking for - much appreciated!

I don't expect it to collapse but an 1800 x 900mm shower tray is going in and the joist with the biggest notch will support the edge of the tray on it's long axis away from the wall so I'm concenred about flexing etc. I'll get some bracket made as per jj4091 idea. thanks for the replies

Yes, I've seen videos about sister joists but in my case there is only a small section of the joist sticking out from the wall and probably insufficient to make a satisfactory connection for the sister so I doubt if that will work.

Looking for some advice about joist strength. The old bathroom is being replaced by a walk-in shower and when the floor boards have been lifted to re-arrange central heating pipes etc found that a previous bathroom installer (1965 house and last bathroom installation was 20 years ago so it...

I'm shortly going to fit 10mm thick shower wall panels over the existing tiles and then a new shower cubicle onto the existing 1200 x 900 quadrant tray. I haven't yet bought the new cubicle but wonder if this additional 10mm will space the new cubicle out to the point it overhangs the curved...