Re: Bathroom Vanity and Gap Between Walls
One or two millimeters gap can be caulked, if you don't like that look, you can go to a shop and have some side splashes made to cover the gaps. The contractor is in error, it is he who should have told you what to be looking for IF that were a valid point, however it is not. Built in, stand alone, it doesn't matter. Whenever you're capturing a countertop between two walls like that, you buy a bigger top and cut it to fit, you'd also want to allow for side splashes to finish off the sides and not have any gap or ragged saw cut.
The fix. If this is a formica top, go back to the place of purchase and order side splashes to match. If this is a cultured shop, find a local cultured top maker and see if they've got some remnants or if they can pour you some matching end splashes. Keep in mind with the latter that there is no way to guarantee a perfect match because they did not make the original top, even if they did, the mix and final product varies slightly from batch to batch.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!