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how to repair water bubble in drywall

by Daija Reinger Published 2 years ago Updated 1 year ago

How to Fix Bubbles in Drywall Tape: 5 Easy Steps

  • Step 1: Marking the Spots. The very first step is the easiest one. Yet, it is the most important one as well. Your first...
  • Step 2: Fixing the Bigger Spots. Now begin the fixing process with the smaller areas. Find the marked areas that have...
  • Step 3: Fixing the Wider Areas. Now it is time to move to the wider areas. In...

To get rid of bubbles safely, remove the paint in the affected area but no more of the surrounding paint, rub the area beneath with sandpaper to make sure it's smooth, and apply joint compound to repair the wall.

Full Answer

How to repair water damaged drywall step by step?

What are Signs of Drywall Water Damage?

  1. Discoloration and Stains. When walls suffer water damage, two common signs are discoloration and stains. ...
  2. Bubbles. If water reaches walls from behind, then it may cause bubbling. ...
  3. Peeling Wallpaper or Paint. Wallpaper is adhered to walls, so if it comes into contact with water, the wallpaper can end up just peeling off.
  4. Sagging Walls. ...

What causes bubbles in drywall?

What causes drywall to bubble? Bubbling Drywall. This occurs when installers applied too much or not enough joint compound beneath the tape; the tape won't adhere properly when this happens, causing it to gap and bubble beneath any texture or paint applied on top. Bubbles might also occur as a result of water damage. Click to see full answer.

How do you fix water damaged drywall?

  • Water stains. Water will dissolve brown stuff from the paper backing and/or dirt and deposit brown stains on the visible drywall when it dries. ...
  • Crumbling drywall. ...
  • Bubbles on the ceiling/wall indicate water has gotten between the paint/wallpaper and the drywall. ...
  • Bathroom tiles falling off (or at least loose on) the wall. ...

How to fix air bubbles in drywall mud?

This article will go over the following:

  • The most common causes of air bubble formation in your drywall mud.
  • Solutions for fixing air bubbles in your drywall mud to create the desired result every time.
  • Provide a few basic compound application tips.
  • Suggestions for where you can purchase quality mud that will get the job done right.


How do you fix water damaged drywall bubbles?

Use setting-type joint compound, also called mud, for water damage repairs to drywall. Ready-mixed compound will not be hard enough and it's vulnerable to any residual moisture in the wall material. Remove bubbling joint compound and paint using a putty knife to scrape off all the damaged material.

Can water damaged drywall be repaired?

If drywall panels only show water stains but aren't structurally compromised, they may be repairable by cutting out the damaged portion. When cutting out around the damaged area, use a keyhole saw to cut the hole into a square or rectangular shape. You can then make a patch with another piece of drywall for the repair.

How do I fix a bubble in my wall?

Bubbles are usually localized in one spot, so you only need to remove the blistering area and not any of the rest of the paint. Rub the area underneath the bubble with sandpaper to smooth the surface. If the resulting surface is pitted or uneven, apply joint compound to repair the wall.

What causes water bubble in wall?

Excess moisture on your painted walls—whether from water droplets, high humidity, leaks, or plumbing problems—can cause water-filled bubbles in the paint, originating anywhere from the substrate level to between the top two coats.

Can wet drywall be dried out?

If you address the damp right away, you can usually dry out wet drywall with good results. If you're facing extensive damage, call in a professional restoration company. Some projects are just too big to tackle by yourself. Make sure you've uncovered the root cause of the water damage.

Does wet drywall always need to be replaced?

Wet drywall does not always need to be replaced. In some cases, you can dry out and save your walls if you act quickly. However, whether you can save them depends on a few factors. How Much Water is Involved The more water involved, the less likely you'll be able to save wet drywall.

Should I pop water bubble in wall?

Generally, it is not recommended to pop the bubble on your wall. Chances are, the bubble itself is slightly damp, and may have taken on a tissue-like texture, so you won't even be able to pop it.

Should you pop paint bubbles?

What to do if paint bubbles pop-up? If paint blisters do appear, don't touch them. Give the wall time to completely dry and cure before addressing the problem by scraping, patching, sanding, cleaning and repainting.

What causes drywall blisters?

Bubbling (or sometimes called “blistering”) happens when the paper layers in the drywall become separated. While it may not seem like it's loose, you may find out differently once you slap your first layer of joint compound on the wall. Bubbling still happened for me, even after checking the wall numerous times.

Does homeowners insurance cover water damage?

Under most standard home insurance policies, if water damage occurs suddenly or accidentally from a source inside your home, such as a busted pipe, it will likely be covered by your homeowners insurance. If the water comes from outside your home, it will not be covered by your standard policy.

How do you fix water damaged walls?

Steps To Repairing Water DamageClean The Area. Before you start a project like this, give the water damaged area a good clean. ... Clear And Scrape Any Flaking In The Area. ... Cover Water Damaged Area With A Peel-Stop / Sealer Binder. ... Apply Filler. ... Sand Surface. ... Apply Water-based Primer / Sealer. ... Apply Paint.

What happens if water gets in your walls?

Water can get into your framing materials, insulation and drywall, causing mold, electrical hazards, rotting, and corrosion. Ironically, wall water damage can cause fires because of electrical damage.

What happens if water leaks into drywall?

When water leaks onto drywall it can cause minor damage like stains on the paint finish; very severe damage like bulging in the wallboard; or some degree of damage in between such as bubbling joint compound and peeling tape and paint.

How to repair drywall seams when sealer is dry?

When the sealer is dry, repair any surface roughness and damage using this bubbling paint repair process. Re-tape any exposed drywall seams with fiberglass mesh joint tape and use these crack repair techniques to cover and finish the taped seams.

How to make mud sanding easier?

Always overlap the edges of the previous coat of mud and skim it out as thin as possible around the perimeter to make final sanding easier. Allow the final coat of mud to set and dry completely before final sanding.

How to scrape a patch of mud?

Apply a thick coat of mud over the whole patch again, overlapping the edges of the previous coat. Immediately skim the excess mud off using the joint knife. Make parallel strokes across the patch using firm pressure with the knife. Ignore any ridges left by the edge of the blade, you will scrape them off when the mud sets.

How to patch gypsum board?

With gypsum board plaster, use a slightly thinner piece of drywall to patch it. This will place it a little below the surrounding surface allowing room to build up over the patch with joint compound and restore a matching smooth surface.

How to level a mud patch?

Immediately skim the excess mud from the patch to level it. Use a straight edge like a 1x3 long enough to span the whole repair and skim off the excess mud. Rest the board on the surrounding surface and draw it across the patch, stopping to remove the collected mud as you go.

How to skim a coat?

With each coat, skim in the opposite direction from the one before. If you skimmed vertically, apply the next with horizontal strokes. Reversing direction like this with each application will help eliminate any ripples or uneven surface.

How Can I Do DIY Repairs for Water-Damaged Drywall?

The do-it-yourself work you can do to conduct drywall repair in the aftermath of water damage is largely dependent on how much damage there is.

What Should I Do if My Drywall Suffers Water Damage?

If your drywall has sustained water damage, you first need to address the water source and eliminate any standing water. This is done to ensure your safety and to ensure that the water damage doesn’t worsen.

What are Signs of Drywall Water Damage?

Sometimes, you may not realize your property has suffered water damage, because the cause isn’t evident like it would be if a flood damaged your home. But you will want to make sure that your drywall has suffered damage before you spend the time and money to repair it. As such, look out for the following signs, as they are likely indicators of water damage:

Why is drywall porous?

Because the exterior of drywall is made of paper, it is a porous material that can suffer water damage. The damage can result in mere water stains, or it can cause bulging or warping. In the event that your residential or commercial property has suffered water damage, then you need to be especially concerned for the drywall.

What happens when water enters a building?

Drywall Water Damage. When water enters a property, it will become absorbed by porous building materials. Drywall is one of the most common building materials used in homes and other buildings. Drywall is made up of a sheet of gypsum that is sandwiched by two different papers. Because the exterior of drywall is made of paper, ...

What causes wallpaper to bubble up?

2. Bubbles. If water reaches walls from behind, then it may cause bubbling. When the water contacts the wall, it forces the wallpaper or paint to bubble up from the drywall. 3. Peeling Wallpaper or Paint. Wallpaper is adhered to walls, so if it comes into contact with water, the wallpaper can end up just peeling off.

How to smooth out a bumpy surface?

Finish it off with a thick, thorough coat of joint compound. When it’s dry, scrape off any bumps and irregularities to smooth it out. Get a piece of sandpaper to smooth the surface further but be gentle. Once you’ve finished sanding the surface, you can apply a new coat of paint.

Why does drywall tape bubble?

The final reason could be with the adhesive you use. If you scrap the adhesive too hard, it can uplift the tape a bit. When the wall absorbs the moisture, air might sneak inside the tape. This can create air bubbles in the drywall tape.

How to prevent bubbles from forming?

You can take care of several things to prevent bubbles from ever forming. The first thing to ensure is to buy pure and unmixed mud or compounds. You should check the consistency of the mud beforehand. An excellent, consistent mud can be applied gently without any hassle.

What is the best tape for drywall?

Mesh or paper tape is better for drywall. It prevents bubbles from forming underneath by tightly sealing the areas.

How to make tape not uneven?

Another thing you can do is to wet the tape before attaching it. Just sprinkle some water over the tape and make sure not to soak it . This will ensure that the tape is not uneven in different areas.

How to mark bubbles on tape?

Begin the marking process by finding the smallest fizzes. Mark those areas and move on to every little or big bubble area inside the tape. Circle the bigger areas with the marking pen to easily identify them. The bigger spots usually have diameters of 1 to 2 inches.

How to stop joint tape from bubbling?

The best way to stop the joint tape from bubbling is to understand why it is happening. There could be several reasons. But most importantly, make sure that the compounds are not mixed and there are no loose areas.

How to smooth out mud on a tape?

Once the spot is clean, take some mud from the mud pan. Apply mud over the spot and also on both sides of the tape. Use the knife to smoothen the mud layer.


For repairing drywall paper bubbles, you will need some essential elements. You will need some wall mud. You can easily buy them from the market. You can also prepare it at your house. For this, you will need some calcium carbonate, which is marketed as limestone, you will also need some perlite and starch.


In conclusion, we hope that the process we have mentioned will help repair the drywall paper bubbles. The process is much straightforward, and the beginners can efficiently perform it. Thank you for your time. Have a nice day!

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