How to paint concrete floors

Jason
View the video

Project Overview

A simple paint job is an easy and affordable way to give your old concrete floor a fresh new look. Here are some simple tips on how to paint a concrete floor, so that it adds value to your home.
Continue to step-by-step instructions
paint roller
View the video
00:12
×

How to paint with a roller

When you’re painting a ceiling with a roller, keep the end of the roller facing the side of the surface that you have already cut in. This will make sure that the roller’s metal frame doesn’t damage your walls.

Step by Step Instructions

1 Check for moisture
2 Check you concrete isn’t sealed
3 Clean the concrete
4 Apply an acid wash
5 Apply the etching agent
6 Mask around the edges
7 Cut in the edges
8 Paint the rest of the concrete floor
9 Remove masking tape
  • Step 1. Check for moisture

    First, it’s important to make sure your concrete doesn’t have moisture rising up through it. If it does the paint won’t stick and will peel off. To check for moisture, lay a plastic bag on the concrete and tape it down so that it’s sealed. Leave it overnight and check in the morning to see if there’s any moisture on the plastic. If there is, you will need to get advice on the products you will need to use.

  • Step 2. Check you concrete isn’t sealed

    Check that you concrete doesn’t have any sealant on it by sprinkling some water over it. If the water is absorbed, it’s fine. If the water beads it has a sealant on it that will need removing using acid or an etching agent.

  • Step 3. Clean the concrete

    Use a garden hose or a high pressure cleaner to remove any dirt, sand or debris from the concrete. Then use a hard bristle broom to get rid of any ground in dirt on the concrete. 

  • Step 4. Apply an acid wash

    Put on your safety gloves and respirator before handling the acid. Depending on how damaged and stained your concrete is you might not need to dilute the acid. If it’s not too bad you can dilute it in a bucket of water. Use a hard bristle broom to apply the acid and scrub all of the concrete. Then hose the mixture off.

  • Step 5. Apply the etching agent

    Applying an etching agent creates a nice bonding surface for the paint. Put on the protective gloves and respirator. Follow the instructions and mix the agent in a bucket of water. Use the hard bristle broom to apply the etching agent and scrub all of the concrete. Rinse off the etching agent with a hose and let the concrete dry.

  • Step 6. Mask around the edges

    To protect your brickwork and walls around the concrete floor, place masking tape around the edges. This will also make it easier when it’s time for cutting in the paint with a paint brush.

  • Step 7. Cut in the edges

    Thoroughly stir the paint in the can before you use it. Also read the instructions on the paint can because it may need a primer, especially if your concrete has previously had paint or sealer on it. Pour the paint into a roller tray, then use a paint brush to cut in around the edges of the concrete floor.

  • Step 8. Paint the rest of the concrete floor

    After you have finished cutting in, use a roller on an extension pole to paint the rest of the concrete floor. Once the paint has dried you can remove the masking tape.
  • Step 9. Remove masking tape

    Once the paint has dried you remove the masking tape, some tapes will stick to your wall.
diy chalkboard cabinet hanging in the garage 01:27

Shelving & Storage D.I.Y. upcycled chalkboard cabinet We take an old cabinet and upcycle it into a handy chalkboard cabinet that will give you somewhere to store tools and a place to write lists or plans for your next project.

honeycomb wall shelves 02:23

Shelving & Storage How to make D.I.Y. honeycomb floating wall shelves These honeycomb floating wall shelves are a modern and stylish way to make a feature of any wall in your house. They’re easy to make and they’ll give a somewhere to show off your favourite things.

bathroom rejuvination 01:44

Ideas & Makeovers Learn how to give your bathroom a makeover on a budget Simple and affordable ways to give your tired bathroom a makeover.

roses in garden

Planting & Growing Winter garden ideas It may be cold outside in most parts of New Zealand but there are still a few things that need to be done in the garden at this time of the year. But if you can’t face going outside, you can always bring your garden inside suggests Bunnings horticul...

diy wood and concrete kitchen island 05:43

Outdoor Living D.I.Y. wood and concrete kitchen island You’d be surprised how easy it is to make this wooden and concrete kitchen island from just a few simple tools and materials.

Modern living room DIY makeover 01:29

Living Room How to give your living room a modern D.I.Y. makeover There are a few simple ways to freshen up a tired living room and make it a real feature in your home. You can create more space by knocking out a wall and updating the furnishings to fit. By adding floating cabinetry and open shelves, you’ll have m...

black diy wooden sofa arm table 02:49

Living Room D.I.Y. wooden sofa arm table A sofa arm table is a great addition if you’re short on space or don’t have a coffee table in your living area.

hampton kitchen

Ideas & Makeovers Hamptons sanctuary Bright, open and stylish are the hallmarks of the Hamptons Sanctuary. The island bench doubles as a workspace and breakfast bar, while the bamboo benchtops and window panel cupboards complete the look.

Top of the content