
Concrete is an appealing choice for shower floors because it resists water damage and mould, and can be easily moulded to fit odd shapes and sizes. Concrete can be coloured with a variety of different chemicals, and acid stains are one of the more common choices, as they create a natural-looking, variegated effect. Concrete absorbs water, so it is important to apply a sealer to protect your shower from water damage and protect your stain. If you are pouring a concrete shower pan, you will need to form and pour a curb and slope with the right consistency of mix. You can use a waterproofing liner underneath, and then mortar over the concrete for a bulletproof shower pan.
| Characteristics | Values |
|---|---|
| Concrete shower pan | Can be stained with acid stain |
| Concrete shower floor | Can be coloured with chemicals, pigments, or overlays |
| Concrete shower walls | Can be stencilled, coloured with stains, or left plain |
| Sealers | Penetrating, acrylic, polyurethane, epoxy |
| Waterproofing | Waterproofing sealers can be applied to make concrete shower walls waterproof |
| Concrete shower pan installation | Can be formed and poured, or installed over a wood subfloor or slab |
| Concrete mix | Consistency of the mix is important for trowelling the slope; smaller rocks are preferable |
| Cure time | Typically 28 days for concrete to cure |
| Water absorption | Concrete absorbs water, so sealers and waterproofing are important |
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What You'll Learn
- Concrete shower pans can be stained with acid to create a natural, stone-like effect
- Sealants are necessary to protect the shower pan from water damage
- Concrete can be stencilled to resemble tile or coloured to create a mural
- Concrete is a good choice for shower pans as it resists mould and water damage
- Concrete shower pans can be built on a slab or wooden subfloor, but the former is preferable

Concrete shower pans can be stained with acid to create a natural, stone-like effect
There are a few things to keep in mind when staining a concrete shower pan with acid. Firstly, it is important to cover any nearby metal items, such as faucets, as the acid can splash onto these surfaces and cause damage. It is also crucial to ensure that the concrete is not already sealed, as this will prevent the stain from penetrating the surface. To test if the concrete is sealed, drip some water onto the surface; if it beads up, the concrete has been sealed and the sealer will need to be removed before staining.
When applying the acid stain, it is typically done with a pump-up hand sprayer in a circular, swirling motion to avoid obvious overlap. Multiple coats of stain may be applied to achieve the desired colour depth and evenness. After staining, a second product is used to neutralize the acid and make it safe for metal and drain surfaces. This two-step process is important for ensuring the safety and longevity of the stained concrete.
In addition to the acid stain, a concrete overlay can be used to create a decorative texture or pattern on the shower pan. This overlay can be stamped, stencilled, or textured to imitate the look of other materials, such as brick, stone, or tile. The overlay can also be stained with acid to enhance the design. Whether staining the concrete directly or using an overlay, the final step is to seal the concrete to protect it from water damage and ensure the stain's longevity.
Overall, staining a concrete shower pan with acid is a creative way to achieve a natural, stone-like effect in the shower. With the right techniques and products, it is possible to transform an ordinary concrete shower pan into a unique and attractive design feature.
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Sealants are necessary to protect the shower pan from water damage
Concrete is an appealing choice for shower floors due to its mould resistance and ability to be moulded into odd shapes. However, concrete absorbs water, which is not ideal for a shower. This is where sealants come in.
There are several types of sealants available for concrete shower pans. Penetrating sealers are a good choice as they are absorbed by the concrete and become invisible. Most penetrating sealers are breathable, allowing any water that gets into the concrete to evaporate. Acrylic sealers are fast, inexpensive, and easy to use but require regular maintenance. Polyurethanes improve the look of stained concrete and are more durable than acrylics, but the shower floor must be completely dry before application. Epoxies are very water-resistant but may trap water in the concrete, which can cause problems. Silicone sealants are another option that can help reduce the risk of water damage and create a strong, easy-to-clean seal that will last for years.
When sealing a concrete shower pan, it is important to seal around the edges of the shower, including where the walls meet the floor, around the drain, and at any joints. It is also important to seal any gaps or cracks in the shower to prevent water from leaking out. Surfaces must be completely dry for the sealant to bond properly, so it may be helpful to use a hairdryer to speed up the drying process.
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Concrete can be stencilled to resemble tile or coloured to create a mural
Concrete is a great material to use in a bathroom, especially for a shower floor. It doesn't rot, it resists mould well, and it's easy to mould into odd shapes and sizes. Concrete can be coloured in a variety of ways to create a unique and appealing shower pan. One way to add colour and pattern to a concrete shower pan is to use stencils.
Stencilling concrete is a fun and budget-friendly DIY project. You can use a stencil to create a faux tile effect on your concrete shower pan, giving it the appearance of cement tiles. This can save you money, as real cement tiles can be expensive and difficult to maintain. Start by choosing a stencil pattern and paint colours that appeal to you. You can find a variety of stencil designs and sizes online or in stores. Test out your stencil and colours on a piece of cardboard or concrete before starting your project.
When you're happy with your design, prepare the concrete surface by cleaning it thoroughly with a spray hose or pressure washer. You can also use a concrete cleaner diluted with water. Once the concrete is clean and dry, you can start stencilling. Hold the stencil in place and use a dense brush or roller to dab or roll the paint onto the concrete. If you make a mistake, don't worry! You can always paint over it and try again.
In addition to stencilling, concrete can be coloured in other ways to create a mural or a unique design. Concrete can be coloured with a variety of chemicals, including acid stains, concrete dyes, concrete paints, and tinted sealers. Acid stains create a natural-looking, variegated effect that resembles stone, while concrete dyes produce a subtle, consistent colour. Concrete paint allows for brilliant colours and detailed patterns but may chip or wear down over time. Tinted sealers are a two-in-one product that colours and protects the concrete but will wear off over time.
Before colouring your concrete shower pan, consider the state of the concrete, your budget, and the desired colour effect. If you're sealing your concrete, you may want to use a tinted sealer to add colour. If you're working with wet concrete, you can use a dry-shake colour hardener or integral dye to create a consistent colour. Performing a trial run with a sample of concrete will help you understand how the colour will work and how much dye or hardener is needed.
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Concrete is a good choice for shower pans as it resists mould and water damage
Concrete is a great option for shower pans as it is highly customisable and can be easily moulded to fit any shower size or shape. However, one of the most significant advantages of using concrete for shower pans is its ability to resist mould and water damage.
Concrete is naturally resistant to rot and mould, making it ideal for damp environments like shower pans. It is important to note that concrete is porous and can absorb water, so proper sealing is essential to prevent water damage and mould growth. There are various sealers available that can protect concrete shower pans from water damage, such as penetrating sealers, acrylic sealers, polyurethanes, and epoxies. Penetrating sealers are invisible and allow water vapour to escape, while polyurethanes improve the appearance of stained concrete and are more durable than acrylic sealers. Epoxies are the most durable finish but may trap water in the concrete, which can lead to long-term problems.
Additionally, concrete can be coloured with different chemicals, such as acid stains, to create a natural stone-like appearance. Acid stains chemically react with the lime in the concrete, resulting in a variegated look. This reaction also helps protect the concrete from water damage. When using acid stains, it is crucial to cover metal items in the shower to prevent damage from the acid.
To further enhance the water resistance of concrete shower pans, integral water repellents can be added during production. These repellents provide optimal coverage and help prevent efflorescence, a crystalline deposit of salts that can cause moisture issues and damage concrete. Proper moisture control is crucial for concrete to maintain its strength and structural integrity. Relative humidity levels and pH in concrete are directly related, and higher humidity can lead to increased porosity and reduced compressive strength.
Overall, concrete is a durable and customisable material for shower pans that resists mould and water damage when properly sealed and treated. Its ability to be moulded to any shape, coloured with stains, and protected with sealers makes it a versatile option for shower pans.
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Concrete shower pans can be built on a slab or wooden subfloor, but the former is preferable
Before building a shower pan, you should have framed shower walls and a subfloor with drain plumbing and supply plumbing in place. The subfloor should be completely flat and level. If it is not, you can apply a self-levelling compound following the manufacturer's instructions. The entire bottom of the shower pan must sit on a flat, level surface.
If you are using mortar, you will need to calculate your floor slope by measuring the distance from the drain to the farthest wall in feet. The target is 1/4" of slope per foot from the wall to the drain. You can use a slab calculator to estimate the amount of material required.
If you are staining the concrete shower pan, you should cover faucets or other metal items in the shower, as acid stains are normally applied with a sprayer, and the acid could splash onto these surfaces. Once the acid has reacted with the concrete, you will need to neutralise it with a base. You should also seal the concrete with a penetrating sealer to protect the shower from water and protect your stain.
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Frequently asked questions
Yes, you can stain a concrete shower pan. Acid-based stains are a common choice for concrete shower pans as they create a natural-looking, variegated effect that can resemble stone.
Concrete shower pans are practical and easy to clean, with no grout joints where mould and mildew can grow. They also offer unlimited design options and can be stencilled to look like tile or coloured with stains to create an artistic effect. Additionally, concrete resists mould well and does not rot.
When staining a concrete shower pan, it is important to cover faucets and other metal items as acid stains can splash onto these surfaces. After applying the stain, neutralise it with a base to make it safe for metal and drains. You can also add a concrete overlay to improve the appearance and add decorative textures or patterns.
There are several types of sealers that are appropriate for concrete shower pans. Penetrating sealers are a good choice as they are invisible, breathable, and allow any water in the concrete to evaporate. Polyurethanes improve the look of stained concrete and are more durable than acrylic sealers, but require the surface to be completely dry. Epoxies are the most durable but may trap water in the concrete.
The cure time for concrete is typically around 28 days. It is important to wait for the full cure time before installing any tiles or fixtures to ensure the stability of the concrete and maintain valid warranties from manufacturers.











































