Bathroom sealant tape might do it.
Large gap between bathroom vanity and wall.
In 1820 the ratio between the income of the top and bottom 20 percent of the worlds population was three to one.
Depends on how large of a gap if more a crack than a gap use tub caulking.
Gap is normal because walls are never straight.
Close the gap between counter and wall if the gap between the countertop and backsplash is more than 3 8 inch it s generally too wide to fill and is best handled with trim but you can try to close the gap to give yourself the caulk option.
Next have a look at the gap and measure how wide it is.
If your gap is smaller than 1 8 inch in width use regular caulk.
If you want you can do a small tile backsplash on the side and front.
If you have tile on the wall adjoining the tub select a caulk that matches the color of the grout.
With a custom fit piece it would have been scribed to fit that wall.
The vanity looks fine.
How to fill the gap between wall and vanity cabinet.
You could extend it vertically from the floor to above the vanity top and make a few shelves like a spice rack for sink items.
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Comments 7 thanks for all your answers.
Go to a diy store and look at the different types of mouldings in the wood timber section.
The cheapest fix would be to make a wooden box frame and put it between the vanity and the wall in the gap on the left.
Find something similar that matches the decor and paint it the color of the molding.
You should find a profile wood moulding that looks like a triangle from the side and they come in.
You could also use the expanding foam caulking that is trimable looks like foam when dispensed.
A place for lotions soaps toilet paper makeup etc.
Now take a look at the molding along the floor of the room.
Use a widget a gadget that holds a single edge razor blade and carefully remove the excess caulk.
Looks like i need a filler strip to cover the.
Fill gaps larger than 1 8 inch.
2 phillips bit a flat pry bar wood shims and a hammer.