How to Fill a Gap Between Bathroom Vanity and Wall? (Easy Solutions!)

Having a nicely modeled bathroom requires a Vanity that fits in perfectly. Every time you stand in front of it, your vanity must feel like the most perfect thing in your bathroom. 

But a noticeable gap between the vanity and the wall can be a bit awkward. Want to know why there’s a gap and how you can get rid of it? In this article, we’ll help you find out! 

How To Fill A Gap Between Bathroom Vanity And Wall? 

You can use a few methods, such as filling the gap with silicone caulk, adding a backer rod, or installing a backsplash. Sometimes, tiling a sidewall to fill the gap can also do a great job! But the most common fix for a back wall and vanity gap is to use a bigger backsplash. 

But even before you get to fill the gap, you need to identify where the gap is. Most commonly, gaps can occur between the vanity’s sidewall or back wall. Thankfully for you, we have the solution to both! 

So here is how to fill a gap between the bathroom vanity and wall: 

How To Fill A Gap Between Bathroom Vanity And Backwall:

1. Using A Sealant Tape 

Sealant tapes are waterproof sticky tapes that can be used to fix smaller but noticeable gaps. Sealant tapes can be applied to cover gaps up to 1.5 inches wide. And because of their moisture-locking capabilities, no water or dust goes through! 

Sealant tapes come in different colors too! So you can still preserve the aesthetic of your cabinet. 

2. Using Caulk And Backer Rod 

First, place a backer rod in the gap you want to fill. Once the rod is placed, use caulk to seal the rod with the nearby surroundings.  

You can also use a caulk that matches the color of your wall. This way, the fix fits right in but also works wonders. 

3. Use A Thick Backsplash 

The best and most effective fix for a back wall gap is to use a thicker backsplash. Backwall gaps can also lead to water splashing in between the gaps, and a thicker backsplash helps you prevent that. 

Installing a backsplash is a bit expensive. But, if you want something that completely eliminates your back wall gap and also makes the vanity look much better, you should invest! 

How To Fill A Gap Between Bathroom Vanity And Side Wall: 

For the most part, you can use the methods you used for the back wall to fill the gap between your vanity and the side wall. 

So, here is how to fill a gap between the vanity and side wall: 

1. Use Sealant Tape 

Sealant tape is excellent not only for the back wall but also for the sidewall. Again, it’s much more likely to work if the gap is narrow. But, if the gap is larger than 1.5 inches, the sealant tape won’t work as well. 

2. Use A Backer Rod 

Again, like the back wall, you can use the backer rod technique to fill the gap between your vanity and the sidewall. To fill the gap, just follow the techniques we mentioned above. 

3. Use A Piece Of Wood 

A trick that works quite well is putting a piece of wood in the gap. When measured according to the gap, this piece works like a puzzle piece. If you get the measurements right, you’ll get a great fix! If not, you’ll just be wasting energy and wood. 

4. Tile The Sidewall 

One of the more famous fixes to a gap between the vanity and wall is to tile the gap. All you have to do is get the pros to come in and install more tiling in the wall. This new piece of tile will sit between the vanity and wall, filling the gap. 

Why Is There A Gap Between Your Bathroom Vanity And The Wall? 

Before we get to fixing the issue, it’s important to know the cause. In this case, knowing why there is a gap between your vanity and the wall is the first step to getting rid of it. 

But vanities don’t come with a gap. So why is there a gap between your vanity and the wall? Usually, if there’s a portion of the vanity that sticks out from the actual structure, a gap can occur. Measurement errors can also lead to gaps between the vanity and the wall. 

For this reason, it’s important to carefully plan and measure any installations in your bathroom. Otherwise, you might just have a very annoying little gap occurring right between your vanity and the wall. 

How Much Space Should Be Between Bathroom Vanity And Wall? 

The ideal gap between your bathroom vanity and the wall should be 21-30 inches. This applies to both the back wall and the sidewall. Regarding the floor clearance, you should have around 15 inches of space between the vanity and the floor. 

Remember, your bathroom vanity should either be completely against the wall, or the gap should be at least 15 inches. This way, you can still clean any dirt that gathers on the side of the wall. 

How To Measure Space Between Bathroom Vanity And Wall?

The ideal space between your bathroom vanity and the wall should be around 21-30 inches. But where do you measure this distance from? That’s an important question! And if you dont know the answer to it, you won’t get the best results! 

First, measure the length of your vanity and mark the center. Now, measure from the center to the nearby wall and make sure the distance is around 21-30 inches. A minimum distance should be around 15 inches. 

How To Use The Gap Between Bathroom Vanity And Wall;

Filling the gap between your bathroom vanity and wall isn’t completely necessary. But leaving that gap by itself can look a bit boring. So, why not use these gaps to increase the aesthetic of your bathroom? 

Here are some ideas for the gap between your bathroom vanity and wall: 

1. Put A Trash Can On The Side 

If there’s a gap between your vanity and the wall, you can use it to place a trash can there. This makes for a pretty practical use for that gap. 

2. Install A Towel Holder 

Towel holders are great for your vanity. You must dry your hands with a towel every time you use the sink. So, why not have a towel right by the vanity? And that gap between the vanity and wall makes for the perfect space for the towel holder. 

3. Install An External Cabinet

If the gap is on the larger side, you can use it to put in an extra cabinet. This not only gives you extra storage but also your bathroom looks nicer! 

bathroom vanity image

4. Install Shelves 

You might use your vanity for a few things. Maybe for makeup or maybe to just brush your teeth. And for your regular use, it’s important to have your handy items close to your vanity. So, use that empty space to install extra shelves. 

Can Water Get Trapped In The Gap Between My Bathroom Vanity And Wall? 

No! Water can not get trapped in the gap between your bathroom vanity and wall. This is a common misconception. But the reality is that the water would evaporate soon after it falls through the gap. 

Then again, if water is constantly splashing into the gap, it can lead to some problems. But, even then, the water will not get trapped inside. 

How To Prevent Water From Getting In The Gap Between Vanity And Wall? 

While water cannot get trapped in the gap between your vanity and the wall, it can still cause some problems. Mainly it can cause your wall to get damper, cause mold growth, and over time damage the walls around your vanity. 

There are only a few fixes to this problem. You can use sealant tape to fill the smaller gaps for the sidewall. You can do the same for the back wall as well. But, the best fix is to use a thicker backsplash. 

A good backsplash can go a long way. Not only will it prevent water from getting in the gaps of the sidewall, but also the back wall. It may be a bit costly, but choosing the right one would benefit you in many ways while improving your bathroom’s look!

What You Should Consider Before Filling Gap Between Bathroom Vanity And Wall: 

Before getting that awkward gap by your vanity filled up, you should consider a few things. These things would help you answer pretty much every question you can have about this topic! 

So, here is what you should consider before filling the gap between vanity and wall: 

  • Not All Gaps Need To Be Filled 
  • Water Can Not Get Trapped In The Gaps 
  • Carefully Measure Before Any External Installation 
  • Always Measure Before Installing Vanity 
  • Invest In A Good Backsplash 

Conclusion; 

How to fill a gap between bathroom vanity and wall? Well, just follow all the steps we mentioned above! It’s not as complicated as it sounds! 

But all together, I hope you found the answers you were looking for. And until next time, thank you for reading! Goodbye. 

Frequently Asked Questions;

Q. How Do You Fill A Small Gap Between A Wall And Vanity? 

Ans: You can use sealant tape and caulk to fill small gaps between your vanity and the wall. 

Q. How Do I Fill A Large Gap Between Cabinets And Wall? 

Ans: You can use backer rods for larger gaps between cabinets and walls. Or just put it in an external cabinet. 

Q. What Should I Put Between Wall And Sink?

Ans: You can put extra cabinets, trashcan, or shelves between the wall and sink. 

Q. Does Vanity Need To Be Flush With Wall?

Ans: Your vanity should either be completely flush with the wall, or the gap should be enough for you to be able to clean it afterward. 

Q. How Much Space Should Be Between Vanity And Side Wall? 

Ans: Ideally, you’d want about 21-30 inches of space between the vanity and the sidewall.