I’m installing a purpose-built vanity unit at one end of a rectangular cloakroom. It is a good fit at the end of that room, but cannot be installed perfectly equidistant from each side wall because of a mains water pipe at skirting board level running the length of the room on the left hand side. As a result, once the basin is fitted and the splash back surround tiling completed, the gap between the wall tiles and the top of the basin on the left-hand side will still be about ½ inch. This can hardly be filled with suitable silicone sealant as it would be too evident/unsightly.

I’ve considered screwing waterproof plywood to the emulsioned wall on the left hand side before priming and tiling, but believe the dissimilarity between the two sides would be noticeable and do not know how to finish the front vertical and top horizontal edges of the plywood.

Any helpful comments or alternative suggestions will be appreciated.

Hey Mike, any chance you can notch the base of the vanity to allow you to center the unit? Being off 1/2" doesn't sound like much but it will catch your eye. Easier and better looking than the spacer you describe.

Im Glad You Understood That, Can You Post A Pic?
The Best I Can Tell From What Your Describing Id Probably Try And Notch The Pipe Through The Cabnit As Well.

Hi guys and thanks for the interest.

Can't notch as would have to cut right into the full depth of the side panel.

However, have now purchased some 12mm quadrant UPVC and will bridge the gap with this and silicone sealant. What do you reckon? Tilers from a tiling forum have endorsed the idea.