Splashback

[Lieutenant Columbo]

I’m really not sure which forum to place this question, hope I’ve picked correctly...

I’m installing a splashback for the first time, two panels.
Where the panels meet there is a gap where the wall is not square.

What should i do?
Should i run mastic up the corner edge?
Are splashbacks meant to be finished with mastic sealing all of the edges?

 

[foxhole]

The ideal solution is to pack out the back to be vertical, but still need sealing.

 

[MeoMeo]

Hiya,

We had a similar issue with the bathroom and we used these guys for the trims:

https://www.trimtraders.co.uk/trim-and-seal-corner-pieces.html

And then sparingly using clear bathroom sealant to 'water-tight' the gaps.

Hope this helps!