You will notice some dust left on the surface of the concrete, that’s to be expected. So hoover or vacuum around the newly sealed concrete floor after brushing the dust into the centre. You should remove all the dust particles in preparation for painting. Final Thoughts You may be worried about the dust on the floor not being completely removed. You can remove additional dust with a hoover. Just work your way around the area from one side to the other to keep tabs on where you have been. 4. Sealing concrete PVA mix ratio It is an environmentally safe product that adheres to the UK environment standards which makes it a great choice for sealing a dusty concrete floor. It creates a barrier between the concrete which protects and allows you to easily apply a coat of enamel or epoxy-based paint as a finishing coat if you wish to. Roll or brush the PVA onto the surface and then wait briefly for it to take up, but don’t let it dry completely.

Concrete has a high porosity which can be a problem when deciding how exactly to seal the floor. This high porosity means that paint doesn’t adhere correctly to the floor and seeps into the concrete giving you a blotchy, streaky concrete floor. The first step is to inspect the floor and remove any dried concrete that appears on the surface. If you have paint splatters dried in then you are going to want to remove those as well as these will cause issues with the PVA. You can scrape it off for a smooth surface, If you are finding it hard to remove paint marks or blotches then you will need to use a paint stripper before moving onto the next step. 2. Clear the concrete floorPolyvinyl acetate, (PVA) is a multi-purpose chemical compound that has a large application base and is the ingredient in many compounds that are used around the home DIY industry. You can find PVA in the likes of latex acrylic paint and drywall primer in addition to concrete floor sealers. PVA also acts as a bonding agent, so applying a coat of PVA before plastering helps bond plaster to walls.

You can apply a second coat of PVA sealer if you think it’s necessary. However, a single coat is often sufficient. Have a look at the final job and if there are patches missing or it seems like it didn’t take properly then apply a second sealer coat of PVA and wait for it to dry. 8. It’s time for the clean-up Storage & Home Clearance Furniture Clearance Garden & Outdoor Clearance Lighting Clearance Electrical Clearance Tools Clearance Paint & Decorating Clearance Flooring & Tiling Clearance Building & Hardware Clearance Bathrooms & Plumbing Clearance Kitchens Clearance Once the sealer has been applied wait for the concrete to dry out. It won’t take long but it’s best to leave it overnight so leave at least 12hours but it’s best to leave about 24 hours to ensure that all the sealer has completely dried into the concrete. 7. Do you need a second coatPVA stands for Polyvinyl Acetate, but you’ll probably know it as ‘ glue’. Carpenters, joiners, and crafting fans all use it regularly. Paint it onto the wall the same way you’d paint while decorating, and use a paint roller instead of a brush if you need to cover a large area.

Where can you use PVA to seal concrete? You can use it as a sealer on any concrete floor, this could be a garage concrete floor or in the household.

Use the ratio of 4 parts of water to 1 part of PVA to correctly dilute the sealer. You can use a more diluted mixture but this is the standard ratio we would advise. 5. Apply the PVA sealer to the concrete floor An important point to make is If the surface you are working on is external and likely to be washed with rain regularly, PVA is not the best product to use. For external use we recommend using SBR Bond which is much stronger and also stable in Freeze-Thaw conditions. Please also see our project on Freeze and Thaw action. Theories differ as to the perfect PVA solution for plastering. Some plasterers use a little more water, and some a little less. You need to brush the concrete floor to remove any dust and small particles that are in abundance. You will not be able to remove all the dust although and the more you brush the more dust will naturally release from concrete so don’t worry this will be fine when you come to apply the PVA solution. 3. Hoover up any additional dust

Ensure the area is clean and clear before you start applying the PVA sealer. 6. Wait for the sealer to dry I know from years of plastering experience that PVA is the secret ingredient for professionally plastered walls. PVA can be added to a cement mortar mix to give the mix a) slightly better waterproofing qualities and b) advanced adhesion to the surface it is applied to. Painting a coat of PVA on the surface before the cement mortar is applied can even further increase this adhesion. PVA and Uses With Timber To use in sand and cement, a mixture of 2 parts PVA to 1 part water is general. Tip the PVA in the water and mix as normal. PVA dries to a colourless finish and will not react with any other surface preparation or finish. Now work you’re way from one side of the surface to the other. Apply the PVA sealer with either a soft broom brush if you have a large surface to apply and finish the edges off with a small paintbrush. If it’s a small area then you can apply with a paintbrush without too much effort.In this DIY guide, I provide handy tips for preparing a wall for plaster, including why you should use PVA for plastering and how best to apply it.