Which grout? To bodge repair tiling on soggy plasterboard.

[dhutch]

Never going to beat ripping the lot out, cement board, start again.

But in the mean time I need something to stop the water ending up in the kitchen.

I have 2inch mosaics on PB and the bottom two foot is shagged. Brick wall behind. Thoughts?

Daniel

[Gav147]

If it's that bad grout ain't going to help you.

[Efbe]

pics

[dhutch]

Looks like tilling. Nothing has fallen off, just a tad spongy when pressed hard.

[princeperch]

Or just grout as normal and give the lot a good spray with a water based sealer

[Andehh]

Mix the grout with BAL Admix with no water added. Slightly more awkward to work with, but I think that'd do what you need it to do..... maybe give BAL a ring & explain the nature of the bodge?

https://www.bal-adhesives.com/products/admix-gt1/


''A water-based polymer additive for cementitious walls and floor grouts, BAL Admix GT1 improves grout flexibility, physical properties and performance and is ideal for use with porcelain tiles. Suitable for use with BAL Grout, and Wide Joint Grout. Not suitable for use with highly polymer-modified cementitious adhesives and ready-mixed products.

If your looking to improve the performance of cementitious BAL wall and floor grouts then consider BAL Admix GT1. Available in handy 2.5 litre and 1 litre, BAL Admix GT1 provides added flexibility and is perfect to add to grouts for use in projects including showers, swimming pools, heated screed and areas with limited movement or vibration.''

[shtu]

It's likely to be faster, easier and better to remove the damaged sections and replace with new board. Not the whole wall, just the damaged sections plus a bit extra.

You can probably salvage the tiles if you are fairly careful as you remove them - to remove grout off the back face, soak them in water overnight.

[Cold]

shtu said:

It's likely to be faster, easier and better to remove the damaged sections and replace with new board. Not the whole wall, just the damaged sections plus a bit extra.

You can probably salvage the tiles if you are fairly careful as you remove them - to remove grout off the back face, soak them in water overnight.

Yep, this. Chop it out. I went through a similar process a few months ago. Plasterboard was knackered and allowed movement of four tiles after the tray dropped and pulled the mastic. Doing it "properly" would be a huge job as all four walls are tiled top to bottom and I've no idea of the make/supplier.
Just go careful and be aware how brittle tiles can be when removing the old grout and adhesive. No more than a couple of evenings work for this corner.

[MDMetal]

I had a similar problem when my shower tray in the en-suite cracked while I was redoing the main bathroom and upon replacing the tray it was the clear the lower tiles were held onto the soggy cardboard plasterboard but only had a few hours to bodge the fix, I used normal tile adhesive liberally and then used sealant vs grout to keep the water from getting back through to the board. It seems to have held well as that was a year ago! Looks a right mess but then it's a bodge. The whole lots coming out before Christmas so not too bothered.

Long story short, smoother the gaps with silicone!

[dhutch]

That admix looks good. I've actually done the chop and mash some new board in ones already five years ago when I bought the house but am tryinftthe avoid it till spring.

Ruddy thing. There are 2inch so unlikely to break but a sod to clean up. Houses eh!

Daniel

[dhutch]

Very long delay and on the update, but to cut a long story short, I had to rip the lot out and start again.

Once I started digging it out it was much worse than last time, no huge surprise, so just bodging the bottom was right out.

Hacked out the whole back wall of the shower/bath including removing the showerscreen, found some 8x10" or something tiles that complimented the old 2" tiles, boarded out with a full sheet of the foam cement tile board, and retailed the lot including a reclaimed line of the 2" as boarder tiles to tie it all together.

For the side wall I only hacked out till I hit dry plasterboard, patched it with leftover tile board, and a lot of reclaimed grout removed tiles.

Got very luck on finding some complimentary tiles that where in stock at the display room, but still a hell of a long weekend for me and the parents!

Photos to follow if I get chance.

House completed six days ago, been in the new place ten weeks, happy days!


Daniel

[Andeh13]

Thanks for the update, sounds like the right decision! Enjoy your new place!