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How to Fill a Gap Between Bathroom Vanity and Wall?

The gap between the bathroom vanity and wall can be very difficult to fix. Well, one can fix the problem yet may not be up to the satisfaction. By following certain tricks or methods may help. Other than that, more solutions can come into consideration.

By following the below tips regarding the bathroom vanity and wall gap and how to fix that might help you to proceed further.

Why do gaps between bathroom vanity and wall occur?

There might be several reasons why the gaps between the bathroom vanity and wall can occur. Yet, many may like to fix it before doing it right. Some caring efforts can prevent the gaps.

The most common reason for the gaps is due to the measurement error. Well, while measuring and selecting the size of the vanity, there may occur some errors. Which later can turn into a gap.

Apart from that, if there are sink installations, the gap will definitely occur. In that case, only fixing it may work. Or else, sometimes the vanity comes with a widened leg. That may also cause some gaps.

That’s why before installing the bathroom vanity, everything should be cleared out.

How to fill a gap between bathroom vanity and wall?

One can fill the gap between bathroom vanity and wall by putting sealant tap or caulks. Apart from that, the gap can be filled with a rod. Better to measure the size before installing the bathroom vanity to prevent the gap between the wall and vanity. A little bit of carefulness can help a lot.

Filling a gap may seem difficult. Well, that also depends on the size of the gap. Bigger gaps can not be filled easily; meanwhile, smaller gaps might look ignorable yet have a small effect on the appearance.

Shortening the methods below to fill the gap between bathroom vanity and wall.

Sealant tape:

Sealant tape works efficiently to fill up small gaps between bathroom vanity and wall. If the gap is medium to small, simply putting sealant tape on top might give a great outcome. One needs to put the sealant tape on the surface and press it.

Later make it even with the vanity. Well, putting sealant tape between the gaps is also preferable instead of putting it on the surface.

Gorilla 4612502 Waterproof Patch & Seal Tape 4" x 10' Black, 1-Pack

Putting white silicon:

Putting white silicon to even the gap works very accurately here. Well, the gap might look like a filled part. As a result, that might not harm the appearance of vanity. Yet, the water can affect the silicon.

Putting an even filler of white silicon may be required even if you add a rod.

Caulk the gap:

Small gaps can be caulked easily. One can fill the gaps or put a rod in it. Later can decorate the parts. Also, coloring the parts may bring a great outcome. Caulking is the best option here.

One can put latex caulk to fill the gaps. It will be much easier if one can put a rod before Caulking. As it may require fewer caulks and give better strength.

Adding tiles:

Well, adding tiles might seem a bit expensive. Yet if the gap has the space to fit in tiles, indeed adding tiles is better. Tiles may beautify the appearance even more. If the space is too small to fit in tiles, better not add tiles.

Once you add tiles to fill the gap, you may require more tiles to make the appearance unharmed. That, in any case, can cost a bit. Many may prefer this also for smaller gaps. Adding tiles in smaller gaps may make the place a bit tiny than before.

That’s why only for bigger gaps it is more suitable.

How to fix a gap between the vanity and the sidewall?

Small gap:

Smaller gaps may require less effort to fill the gaps. Certain methods or tricks are preferable for smaller gaps. Add some of them below with a shorter explanation.

Caulk the gap:

One can easily fill up the smaller gaps by caulking the gap. One can use cement or latex caulk. Whatever one prefers. Just need to put the caulking material in the gap and fill it. Lastly, seal it.

Well, putting a road before that may help a lot. As one may need less amount of caulk. Yet the best option for filling the gap between vanity and the sidewall. Well, coloring with the color of the wall is the best here.

GE Sealants & Adhesives GE5070 Advanced Silicone 2 Kitchen & Bath Sealant, 10.1oz, White

Sealant taps:

Using sealant taps to fill in the gaps between the bathroom vanity and the sidewall is the most frequent way to use. For a 2 inch gap, one can easily use sealant tape. Yet, the gap may become visible.

Well, for these small-sized gaps, one can put sealant tape on the top and press it to the vanity.

Large gap:

Filling in large gaps may seem a bit difficult, and indeed it is. Filling a small gap might not be a big deal, yet filling the larger ones may indirectly catch one’s eye. Below some applicable methods for filling the bigger gaps is given below.


Larger gaps, more likely to be of 4 inches or more, can be filled with tiles. Thicker tiles can easily fit into the gap, making the gap look more aesthetic. Well, this might be time-consuming as well as require more money.

That’s why better be prepared while installing vanity to not cause this gaping problem.

Using white silicon:

Filling the gaps with white silicon from down to the bottom and making it even with the wall may help here the most. To fill up larger gaps, one can follow this method. In that case, even out the surface and also make sure to color it with the wall color.

The silicon should be put in an even layer so that the layer mixes up well with the wall. Otherwise, it might become eye-popping. Later color it with the wall color. As a result, this part may seem like a wall.

Gorilla 8060002 100% Silicone Sealant, 10 oz, White, 1-Pack

How big of a gap can you caulk?

Almost half a half-inch to the maximum can be caulked easily. Larger gaps than that are not suitable for Caulking.

One can caulk smaller gaps within a few seconds in an effective way. Yet if the gap is larger, Caulking may not work. When you fill a lot of space, it will definitely catch the eyes of many. Apart from that, a huge amount of caulk material might be needed to fill the gap.

One can easily fill half an inch of a gap by using caulk. A larger gap from this might not be suitable for filling. Instead, one can follow other methods that will not make the gap eye-popping.

How much space should be between vanity and wall?

According to the code, the gap should be 4 inches. Yet some may prefer less or more gap between the vanity and the wall.

There should be a minimum space between vanity and wall. If one doesn’t keep that space, it might become difficult to clean. Some may prefer only 2 inches of gap or even no gap. That’s upon their choice.

But the gap is better to be kept between 4 inches. If it seems larger, later can be fixed. Otherwise, there is no option for fixing. Or else you can determine the gap according to your taste. If one wants to clean the beneath easily, one might want to keep a larger gap.

How much space should be between vanity and shower?

The space that should be kept between vanity and shower may differ according to the vanity size and shower, which might be within 21 inches.

Well, the space may differ as all the vanity sizes are not the same. The shower should be kept a bit far from the vanity. Otherwise, the water may get on the vanity. All these might make cleaning of vanity a bit tough.

The space should be almost 21 inches at least. If it was a bathtub, the difference would have been less. One can also adjust the space by adjusting the vanity size.

Final thoughts:

Summing up, the gap between bathroom vanity and wall needs effort to fill in yet not impossible. Using a sealant tap or putting a rod might help. In either case, measuring the proper step from the first of installing the bathroom vanity is further better. Later one may not need to face problems.