Super_Paulie

Looking at the recent reviews of that knauff adhesive, it's all 1 star, they may have changed the formula. That combined with the non primed boards I think I was on a hiding to nothing. It's like an immovable object now with the tile adhesive and I've foamed the gaps between. Even so, I'm going to mechanically fix with screws. Makes me wonder why they recommend stainless screws though when they will be getting coated with tanking anyways, surely they'll spend the rest of their lives dry as a bone.

Much better this time. Used some rapid set and did 2 boards at a time, seems solid now fingers crossed.

Just about to get some tile adhesive instead, sure it'll be stickier! I'll SBR the boards as well when I'm back in. No biggy, learning curve innit, appreciate all the help.

And adding number 3 to this! When I went to remove the spacers between the boards they just came straight off... The boards just didn't take to the knauff plasterboard adhesive. I guess I'll go tile adhesive and try again.

Ok, boards are on. Just need to do the mechanical fix and foam the gaps as above. Two questions have arisen though. 1. Does it matter if the screws are stainless, they'll be getting tanked over anyways? 2. I've got FM330 in the gun, but I'm thinking I should be maybe using something more sticky between the gaps like Insta Stick?

Id imagine the would make the trap in the basin gurgle as it creates a vacuum when the machine discharges and will pull water from the basin bottle. Change the bottle for a trap with an AAV built in? Or whack in a 40mm branch with the AAV on one side?

Great find, cheers Crispy. I was planning on dabbing rather than full fix but I guess it won't be far off once it's compressed anyways.

Each appliance is on its own waste so no AAV. Standpipe just to create the traps.

I think it was this.

How many you reckon is needed on a 1200x600 WEDI panel into the brick? Searched the entire internet and can't find the answer...

I am that plumber. During my renovations I had my washer on a hose that was about 5m long, absolutely no problem for like 3 years. Obviously not best practice but it certainly worked.

Why can't everything just be moved under the sink? Don't think I've ever seen any plumbing, water or waste behind the actual machines. Yes you lose the cupboard space, but so be it. My machines have a recessed section at the bottom so pipes can travel past it without interfering with the space. For what it's worth I did that in 2 places on the opposite sides of the room in my gaff, no regrets.

Onto the next one! Turns out the 20m of 16mm pipe I had left didn't give me enough to get under the shower tray but hey ho. Used the huge notches the previous owner made in my joists to pass though rather than add in my own. 25mm acoustic insulation, 75mm PIR then 50mm rockwool under the spreader plates. Dabbing the insulated tile backer boards onto the external wall next 💪🏻

Sorted, thanks Nick and everyone. Time to get the walls boarded.

Let's go!

Hopefully normal stuff as I got this from Screwfix. Just about to start but I'll hang fire 😆

That's what I'll try my man, thanks for the tip.

Am I just throwing down a load of PVA onto the P5? Just brush the chipboard down, PVA the lot and go to town with the ply and screws? Seems an easy enough job for today.

Aye I've got my screws all ready. Just seems a mental amount to put in but I've already drawn the grid now, looks like a Sunday afternoon job. Ran a few tests, think I'm ok with the depth and 25mm screws, takes a lot to get it to go through the other end of the chipboard to be fair.

How many screws is this, jesus 😂

50/50 then let it go off? Then do it again, let it go off. Then neat just before I start? Cheers Nick.

Should I be using SBR on this bare cavity wall before I dab on my Wedi boards? The wall is in decent nick as I've repointed a lot of it.

22mm. Impact is DeWalt and just one speed, it often gets a bit speedy. Wonder if I can use one of those drywall type depth restrictor bits. Probably being overly cautious but the thought of all the work required to sort out a hit pipe under this lot, doesn't bear thinking about quite frankly.

That's my plan. 25mm seems scarily close to the pipes though. I've got 20mm and 25mm screws, just to see what I dare put in. Seems 25mm is only an impact driver away from spoiling the whole party with the pipes underneath.

Great, I'll crack on then. Off work for a few weeks so I'm hoping to get the bathroom somewhere near sorted. Just spent the day setting up a temporary bathroom in the neighbouring bedroom... When you gotta go you gotta go!