If the grey of the concrete doesn’t suit the room or the patio aesthetic, one can tint the concrete to a different colour. Staining a concrete floor does not have to be difficult if one carefully cleans, patches, and prepares the concrete floor before beginning the procedure. Learn how to stain concrete floors and patios with this article.
Those who like to stain the floor should be aware that there are two types of concrete stains to select from- acid-based stains and water-based stains.
See also: Step-by-step guide for power washing concrete patio
How does concrete stain work?
When acid-based stains are placed on concrete, a chemical reaction occurs. This chemical reaction permanently alters the colour of the concrete, allowing acid-stained floors to last for a long time without fading. When acid is sprayed on concrete, the chemical reaction will continue until the stain is neutralised, making it difficult for a new one to achieve the desired effect.
Water-based stains are available in various colours and are the easiest to deal with. So they are recommended for anyone who has never dyed concrete before. Because concrete is transparent, water-based stains may soak into the hard material and form a smooth covering on the surface, similar to a wood stain.
See also: Concrete pouring: Types, technique and safety measures
How to stain concrete floors?
Clear the room
When staining an indoor concrete floor, one must remove all of the furniture, rugs, lamps and other objects from the space. Remove baseboards with a pry bar to provide access to the entire floor. Remove any wall hangings or window furnishings before using a paint sprayer. This will make installing protective plastic sheeting easier.
Sand the concrete
If the concrete floor has already been painted or sealed, one will need to sand the surface with a power sander. The sander can also be used to smooth off rough places for a polished, consistent look.
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Clean the floor
Use a commercial vacuum to quickly get rid of any sawdust, dirt or debris from the concrete floor, then scrub it with a sharp brush broom and a mop.
Take the time to remove any stuck-on dirt that could prevent the stain from following the concrete or restrict the stain’s contact with the floor. Allow the concrete to cure after thoroughly rinsing it.
Patch cracks with crack sealant
Concrete cracks will grow over time unless they are fixed. Instead of attempting to conceal these imperfections, fix them with a caulking gun and concrete crack sealer. Allow the sealant to dry for 24 hours before polishing the repairs to get a smooth, uniform finish.
Prepare to stain
After thoroughly cleaning the space, apply painter’s tape around the perimeter of the floor. If using a paint sprayer, cover the walls and nearby floors with plastic sheeting to protect them from stray drops of stain.
Gather the necessary tools, which should include a paintbrush, roller, and paint tray. Fill the paint pan with stain to make it easier to work with.
If you opt to use a paint sprayer, make sure it is appropriate for the stain. Acid-based stains can eat away at the components of a regular paint sprayer; hence, an acid-resistant airless paint sprayer is required. Fill the paint sprayer with stain according to the manufacturer’s instructions.
Apply the concrete stain
Choose one side of the room to start on and one side to finish on. If you don’t plan it properly from the start, you can end up painting yourself into a corner.
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Use a roller for the majority of the project to achieve a clean, even finish, but keep a paintbrush available for any corners, edges or tight spots. Apply the pigment to the concrete surface in uniform applications.
When using a paint sprayer, move at a constant rate and apply the stain in broad, even passes.
Apply the concrete sealant and polish
Check the manufacturer’s instructions to see how long the stain will take to dry. Most concrete stains typically take about 24 hours to remove
If you use an acid-based stain, the chemical reaction that colours the concrete will continue until the concrete is washed with a clearing solution. In general, acid-based stain producers will provide you with an approximate schedule to follow. Use a neutralising agent to stop the chemical reaction once the acid has taken on the desired colour.
When the stain has dried, use a concrete sealer to help the finish last longer. If using a water-based stain, let it dry for about 24 hours before applying a liquid wax solution. Polish the floor with liquid wax and mop with a microfiber pad.
Concrete staining tips
- Cover off nearby surfaces carefully to minimise unintended staining – acid stains can be difficult, if not impossible, to remove.
- Always apply a stain test sample to a tiny, invisible area of the treated concrete. Because there are so many variables that can influence the final colour, this is the only way to receive an accurate preview of the finished look.
- Apply the stain immediately after the concrete has been placed; the colours will be more vibrant.
- Use a sealant to protect the newly stained surface. Choose a product that is compatible with the stain you are using.
FAQs
How to achieve a uniform stain colour?
Test the stain on the small, invisible area to determine the desired effect. Apply consistently and follow the manufacturer’s guidelines.
How to prepare the concrete surface before staining?
Clean the surface thoroughly, repair the cracks and ensure it’s dry. Use masking tape to protect adjacent areas.
How many coats of sealer should be applied?
Apply at least two coats of sealer for optimal protection and durability. Allow the first coat to dry before applying the second.
What’s the purpose of applying a sealer?
A sealer enhances the colour, adds shine and protects the stained concrete from moisture and wear.
How long should we wait before using the stained patio or floor?
After applying the final coat of sealer, wait at least 24 to 48 hours before subjecting the surface to heavy foot traffic or placing furniture.
| Got any questions or point of view on our article? We would love to hear from you. Write to our Editor-in-Chief Jhumur Ghosh at jhumur.ghosh1@housing.com |
