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Hi, I recently got a new shower unit put in but due to it being a smaller unit than the last one, we now have a gap above the unit about two tiles worth in size. behind the tiles is also a gap before solid wall and I was wondering the best way to fill this and re-tile the gap?

thanks.

JohnJ

Hi John,

welcome to UHM.

You can cut some pieces of plasterboard, just smaller than the size of the hole and then glue them one by one to the existing wall, until you get to the required depth to take the tiles and the tile adhesive.

Start by sticking one piece of plasterboard to the wall using a grab adhesive, such as no more nails/pinkgrip, then when that has set glue another piece of plasterboard to the piece that is stuck to the wall and then repeat until you get to the desired thickness.

If the area is likely to get really wet, it is best if you use tile backer board, such as aquapanel rather than plasterboard.

thanks very much for that, appreciate the help. what kind of adhesive would I use to tile onto the plasterboard?

Waterproof tile adhesive would be best

thanks very much again. hopefully i can report back with good news!!

You are welcome

sorry to be a pain, but following on from this, the tiles that have been cut away are uneven. what is the best way to cut them to size to get the new ones in properly?

Not quite sure what you mean

Do you mean that the existing fixed tiles need trimming?

If so your choices are limited.

If the tiles are ceramic you can use the
Bosch PMF 180 E

Or a small angle grinder with a diamond disk will cut ceramic or porcelain, but will also make lots of dust.

If you opt for either of the above make sure you wear saftey glasses/goggles.

yep, its the existing fixed tiles that are slightly uneven. just needs a bit off here and there to get the new ones in.