Drywall is fast becoming a universal installation method because of the beautiful look it gives to your place. Also, it is cheaper than the other underlayment options. However, installing tiles on drywall can negatively affect your tiles. The reason for this is that drywall is severely affected by moisture.
So, you need to prepare the surface before tiling it to help it withstand any humid conditions.Essentially, you need to adopt appropriate material to be used in between drywall and tile.
This article will help you learn what material to put between tile and drywall, and how to prepare drywall with the right material for tiling. You will also understand the reasons for using primer and taping drywall joints before tiling.We also introduced the Comprehensive Guide to Install Tiles Seamlessly in the last article, hoping to help you.
How to prepare drywall with the right material for tiling?
To begin, here are some helpful tips when tiling directly to a Drywall. In general, tiling to drywall is fine. In most cases, use a primer, and ensure that the moisture and humidity level is not too high.
Step 1: Clean the drywall completely
First, clean the drywall completely to get rid of dust and debris. If you are planning to remove preexisting tiles from the wall before retiling, you may need to buy a new gypsum board as well. It is almost impossible to replace the tiles without damaging the board.
Step 2: Remove any remaining mastic or wallpaper
Before placing the tiles on the wall, you must remove the remaining mastic and adhesive from the board to keep the surface smooth. When wallpaper is used, peel it off from the gypsum board so that the tiles adhered to the paper cannot fall when the paper gets loose
Step 3: Repair any damaged areas and seal it
Repair any damaged areas on the surface. Mark the cracks and holes on the surface and fill those using compound filler. When that has been done, seal the board with a high-quality sealer. Please wait until it is dry before continuing.
Step 4: Sand the wall lightly and remove all the dust
Scuff up any paint on the wall with sandpaper by giving it a light sanding to remove the shine. It will improve the tile mortar’s adhesion which will help maintain the proper grip on the tiles. Remove all the dust before continuing.
Step 5: Prepare the adhesive
Tiling the wall starting from the top is difficult because there is a risk that tiles may slip. Be sure to start tiling from bottom to top or from center to the sides. When tiling from the bottom, you need to consider the slope of the floor.
The joints of the wall can become uneven due to an unbalanced floor. You can solve this problem by tiling the wall with the highest slope and then using the same starting height for all the other walls.Divide the wall into equal quadrants and complete each quadrant one by one.
Now mix the thin-set and spread it on the wall. Fix the first tile to the wall and put spacers at the edges to maintain an equal distance between the tiles. Next, place the second tile and complete the whole row by putting spacers between all the tiles. Make sure that the tile joints are in line with each other and tape the side of the tiles with the painter’s tape until the adhesive dries.
Step 6: Let it dry, remove the spacers, and clean
Let the adhesive dry for 24 hours before removing the painter’s tape and spacers. Mix the grout and apply it between the tiles to maintain equal grout joints between the tiles. Clean the tiles using a sponge or mop to remove any remaining adhesive or grout from the tiles.
Priming the Drywall before Tiling
If you plan to tile on new drywall, you should apply primer. The main advantage of primer is that it makes the surface moisture and temperature-resistant. Primer also provides better adhesion between the wall and the tile.
If you are tiling older drywall that has already had a primer on it, there is no need to apply it again. When considering tiling options, especially for the outer parts of your home, Exterior Wall Tile could be a fantastic choice due to its durability and aesthetic appeal.
Primer is mostly applied on surfaces like drywall, concrete, and wood to prevent mold growth. It also makes the surface waterproof. As we know, drywall is very absorbent, and it absorbs the moisture of the adhesive when it is applied to the drywall.
This absorbent property of drywall will weaken the bond between the tiles and the adhesive by hardening the adhesive. This results in tiles falling from the wall.So, applying primer on the drywall prevents it from absorbing the solvents from the mortar.
Also, temperature differences due to heat and sunlight make the adhesive lose its grip on the tiles. The primer protects against such temperature changes. It also acts as a barrier against any moisture on the drywall surface.
Drywall mud helps strengthen and smooth drywall and drywall joints and results in an even area for your tiles. Often it is applied in several coats on the drywall. You can either mix the compound by yourself or use the premixed mud type.
Begin with applying an all-purpose mud that goes on smoothly and dries within a few hours. Then, for the final coating, apply to top mud over the drywall surface. Topping mud is not a strong adhesive, so it is not suitable to use as a starting coat.
People usually ask, is it suitable to tile over drywall mud? The answer is yes; it is perfectly fine to tile over drywall mud. You only need to be a little more cautious when tiling over it. If there is a lot of damage to the wall, repair it first.
Prime the surface, particularly in areas where there is a big coat of drywall mud. Mix the thin set, spread it over the surface, and start tiling. Ensure that the thin-set does not dry too soon because the mud will try to absorb the moisture from the thin-set.
Priming Drywall before Tiling
It is recommended to prime a drywall before tiling. The drywall is very porous, and it will absorb the moisture of the adhesive, which will then weaken its grip on the tiles. The drywall itself is not waterproof, and moisture affects the surface. This can result in cracked tiles and tiles that lose their structural integrity.
Priming the new drywall before tiling is important for the tiles to hold and maintain their grip on the surface for a long time. Particularly at more moisture locations like a bathroom
Drywall mud is mostly used in fresh installations to finish drywall joints and corners. However, they can also be used to fix cracks and small holes in the drywall. This makes it a very handy item to have especially if you need to install tiles on damaged drywall. The joint compound or drywall mud comes in four different types.
All-Purpose Compound – This one comes pre-mixed in the form of buckets and is ideal for pretty much any type of application on the drywall. It’s excellent for use when it comes to texturing and skim coating too.
It does take some time to dry though but it is incredibly easy to use and the best option when it comes to tiling on drywall. There is also a lightweight version of the all-purpose compound which is significantly lighter than the standard one. Containing less of the binding agent; it’s perfect for taping seams on the drywall.
Taping Compound – As the name suggests, this type of drywall mud is best suited for the first phase of finishing drywall where you might have to embed a joint tape. It is different from the all-purpose one as it is significantly harder to sand and dries harder.
Topping Compound – Topping compounds are used after coating a taped drywall joint with a taping compound. One of its biggest advantages is that it helps to reduce the time taken for sanding drywall, especially when compared to the all-purpose compound. This one doesn’t come in a pre-mix form, however, and so will require you to mix it with water-based during application. Therefore it loses out a little when it comes to convenience.
Quick Setting Compound – This one is referred to as “hot mud” and is the best type of joint compound to use if you want to finish the task as quickly as possible. It’s also perfect in scenarios where you have to apply multiple coats in a single day or if you want to fill deep cracks or holes in the sheetrock in humid places.
What is unique about this joint compound is that it sets due to chemical reactions and not evaporation. So you don’t need a dry environment for it to set which makes it ideal for damp areas. Similar to the topping compound, this one also comes in powder form and must be mixed with water.
As it sets fast, you will have to apply it immediately after mixing to avoid being solidified and unuseful. Trust George Ceramic products to consistently deliver the quality and performance you need
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