Painting Concrete and Masonry Surfaces

paintingconcrete  

What You'll Need

•    Power washer
•    Bleach or mildewcide
•    Scraper
•    Wire brush
•    Safety goggles
•    Gloves
•    Face mask
•    Tri-sodium phosphate
•    Plastic bucket
•    Scrub brush
•    Concrete patch
•    Paint
•    Floor texture
•    Brush cleaner
•    Primer/sealer
•    Tape
•    Plastic wrap
•    Brush
•    Roller
•    Roller covers

You can use a fresh coat of paint to bring new life to an old basement, an exterior masonry wall, brick, or even a garage floor. With proper preparation, painting surfaces like these can be simple, and the end result will be worth the effort.

Step 1 - Clean the Surface

As with most painting projects, preparation is the biggest key to your success. If at all possible, ppressure washingower wash the surface first. This is the fastest and easiest way to remove old paint and any debris that will interfere with new paint. Use the power washer with some bleach or mildewcide if there is mold or algae present. However, you may be working inside, or in a place where the mess of a power washer isn't appropriate. If that’s the case, tackle cleaning with a scraper and a wire brush instead.

After all of the loose paint and debris has been removed, make sure that the substrate is clean. Any oil or grease on the masonry surface will bleed through the paint, causing discoloration, and possibly interfering with the longevity of the paint job. Use tri-sodium phosphate, also simply known as TSP, to clean the concrete surface before applying any product. Put on safety goggles, gloves, and a face mask; then, mix your TSP cleaner in a bucket according to the manufacturer’s instructions and scrub it onto the surface with a scrub brush to remove any grease or oil and ensure that your paint will stick well.

Step 2 - Make Any Repairs

Ireparing concretef you have any defects in the surface to repair, use a simple, ready-mix concrete patch to fix them after you clean. Refer to the manufacturer's recommendations when trying to assess how long the patch should dry before being painted.

Step 3 - Select Your Paint

When choosing your paint, the most important thing to keep in mind is location. Where is the paint going to be applied? When you’ll want to use interior over exterior paint—or vice versa—is fairly self-explanatory. Many manufacturers actually do make specific masonry paints, and some are even designated as floor paints, so you shouldn't have a hard time finding what you need if you pay attention. There are also additives for your floor paint that can give it some texture or grip. This material is inexpensive and doesn't change the color but does prevent the slips that can occur when wet feet hit a slippery floor. Some kits also come with decorative chips that are added as the paint is applied.
If you are using an oil-based paint and primer, you will need mineral spirits or paint thinner to clean your brushes, and most likely yourself.

Step 4 - Seal and Prime

Almost any masonry surface needs to be both sealed and primed before the paint is applied. The sealer is often clear, but keeps moisture from coming through the concrete. This is especially true in basements, which tend to hold moisture anyway. If you are not sure whether your basement has been sealed or not, tape all four sides of a square of plastic kitchen wrap onto the floor and leave it for 24 hours. If the floor hasn't been sealed, you will see condensed water between the plastic wrap and the floor that has evaporated up through the concrete. Check with a paint store or your local home improvement store’s paint department when selecting your products. Buy a quality masonry sealer and a primer that complements it. Use the two-step process of sealing and priming to build a strong, water-resistant foundation for your paint.

Step 5 - Paint the Surface

After your sealer and primer coats are completely dry, apply the paint. Use a paint brush to do detail work such as around windows and trim or baseboards. You alsopainting conrete wall need a brush for cutting in along the walls when painting a floor. A roller can be used to do the bulk of the painting, but make sure to read the manufacturer's recommendations as to what size nap to use. At least 3/4-inch or one-inch nap is recommended. Buy at least three roller covers, one each for the sealer, primer, and paint.

Apply several thin coats, rather than trying to apply one very thick coat, as paint actually forms a harder surface when thin coats are laid on top of each other. One thick coat often results in a gummy or soft surface. Allow each coat to dry thoroughly; this is often called “curing.” It means that the paint has dried through all the layers down to the original surface. Paint dries to different thicknesses, or “mils,” depending on its sheen and makeup. The thicker the mil of the paint, the longer this process can take. Paint applied to floors or walls in basements may have a longer curing cycle.

After your final coat of paint is applied, allow the paint to cure for the recommended time. If the paint is on the floor and you don't let it dry long enough, it may dry with footprints that will never go away.
Painting a masonry or concrete surface, be it walls or floors, inside or out, can give new life to your home. A space that may once have been dank and dirty can now be bright and clean. You can actually increase the amount of livable space you have just by adding some paint.

Contact Country Wide Walling for a free quotation

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How to Paint an Outdoor Concrete Fence

Concrete fences are typically grey and dull, making them boring and sometimes uoutdoor concrete fencensightly. To remedy this, you can paint a concrete fence, giving it colour and make it look new. Painting an outdoor concrete fence can be done alone or you can ask a family member or friend to help you. It is important to remember to use only primer, paint and sealer that is made for concrete and block. Otherwise, the paints will not bond and will flake off the fence.

Things You'll Need

•    Trisodium phosphate (TSP)
•    Bucket
•    Rubber gloves
•    Scrub brush
•    Concrete patch
•    Trowel
•    Concrete primer
•    Pump sprayer
•    Paint thinner
•    Concrete paint
•    Concrete sealer
•    Paintbrush

Mix together three parts water with one part trisodium phosphate (TSP) in a bucket.

holesPut on rubber gloves and thoroughly scrub the concrete fence with a scrub brush, cleaning away any dirt and grime. Rinse the concrete fence with plain water and allow to air dry.

Fill any holes or cracks in the fence with concrete patch using a trowel to apply the patch and to smooth it flush with the surface. Let the patch dry according to the manufacturer's instructions.

Pour concrete primer into a pump sprayer and apply a coat of primer to the fence. Let the primer dry completely before continuing on to the paint.

Rinse the pump sprayer with mineral spirits, then water and let air dry. Add concrete paint to the sprayer and spray on the first coat of paint. Let the first coat dry between 3 and 4 hours, then apply a second coat of paint.

Brush a coat of concrete sealer onto the fence using a paintbrush once the second coat of paint has dried.

For a free quotation, or to discuss your walling needs,  please contact Country Wide Walling today.

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Common Problems with Painting Concrete Walls

Painting concrete walls can result in a few problems if the concrete wall has not cured. If the concrete cannot adequately cure before it is painted, the paint will trap the excess moisture within the concrete and the paint can peel some of the cement as it peels itself. Painting the concrete wall can also cause the plaster to not receive the water cure that it needs.

common problems

Cracks in the Wall

Before priming the wall, cracks in the concrete should be filled with a material that can withstand weather effects. If the wall plaster has a texture, then sealant should be of a matching texture. If it is not, bands of smooth surface can be seen through every coat of paint in a different contrast.

Coverage

If primer and paint is applied, it needs to be applied across the whole surface in order to have the best results. Once the primer has been applied and allowed to cure, the finish coat needs to be laid on in several thick coats. If not, the uniform color will not be attained and you will not achieve the look that is desired. Some projects do not have primer applied before the paint. Other projects may have had paint thinned so much that the coat is not even effective. This makes the wall look like it did not receive adequate coating.

Primer

In order to get the bond desired, the right primer will need to be applied to new concrete walls. This will prevent paint delamination also. There are some paints and primers in particular that needwall painting to be used together. Although cement plaster and concrete should have a coat of primer before the paint is applied, painters do not always prime concrete and plaster.

Delamination

Delamination is the process of paint peeling from a new concrete surface or cement plaster. Paint will delaminate from concrete just as it does from wood and metal. This is why the concrete wall needs to be well prepared and all application procedures need to be followed. Moisture from rain or from the concrete not curing will release from the concrete and cause cleaving.

Over Brushing the Paint

If a painter applies paint to the brown coat on cement plaster, the paint will serve as a bond breaker causing delamination. Plaster behind a coat of paint will turn soft if paint is not allowed to cure. Paint will keep the water from evaporating properly. Concrete walls need to be prepped and primed. Paint needs to be thick and not diluted.

Please contact Country Wide Walling for a free quotation today

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What Paints Can You Use on Concrete?

paints can use concrete

Though you can use any paint onplaster primer concrete, some kinds prove better suited for certain types of concrete surfaces. Learn which finishes will prove most resilient on concrete floors, statues and walls, or finish failure will prove possible. Learn how to condition the concrete for adhesion, or no type of paint will prove durable in the long run.

Concrete Walls

  • Ordinary latex paint is well-suited for interior concrete walls. Use an eggshell or satin latex paint on concrete walls that aren't exposed to much duress. For concrete walls within weight rooms, work rooms and kids' play rooms, choose a semi-gloss latex paint that will resist stains. If you plan to paint exterior concrete walls and fences, use an exterior acrylic paint that will hold up to ultraviolet light and harsh weather conditions.

Considerations

  • No type of paint will adhere to improperly-prepared concrete. Prime vertical concrete surfaces, or the paint will eventually chip. Use a latex primer on interior walls; use an acrylic primer on exterior walls. Smooth horizontal concrete surfaces do not require a primer; however, they will reject paint unless they are treated with an acid etch.

Contact Country Wide Walling today for a free quotation or more information.

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Enamel or acrylic paint?

Plascon Multi Surface PrimerThis topic has bothered me for many years and I have never managed to find a helpful answer. If I’m coating a previously painted surface, how do I know what type of paint was used. I assume it is important to know because water-based and oil-based paints are very different.

1.    Is it possible to ‘prime’ an existing oil-based paint with universal undercoat and apply water-based paint over     this? I prefer to use water-based paints because cleaning the brushes and rollers after use is so much easier.
2.    Is there an advantage to using enamel over water-based paints?

A Toni Stella the Paint Fella replies: 

Determining whether the surface was painted with a acrylic or oil-based paint is very important.

Testing for an oil base:
•    Soak a cotton wool ball or very soft cloth in methylated spirits, alcohol or lacquer thinners and rub it back and forth over the area.
•    If the paint rubs off (dissolves) and you see the other colour below, you know it’s a acrylic product.
•    If no paint is removed, it’s an oil-based paint.multi surface primer
Oil-based enamels can sometimes be painted directly over acrylic (however, it is not acceptable industry practice). Special preparation is needed to cover oil-based paint with acrylic.

Covering oil-based enamels with acrylic:
•    Surfaces previously painted with oil-based enamels must be abraded with a Scotch-Brite pad and a solution of sugar and soap.
•    Rinse with clean running water and repeat until a matt surface is achieved.
•    Apply a coat of Plascon Multi-Surface Primer and allow it to dry for four hours at 23˚C.
•    Apply the final coat of acrylic paint.
•    Your brushes and tools can be cleaned with water.

For a free quotation, please contact Country Wide Walling today

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Best Service Ever

We had our Concrete Palisade Fencing Erected by Country Wide Walling in July 2015. Although our fence was only 235m long, we were still treated as if we were one of their top clients. Service, efficiency and cleanliness were a priority for me, and Country Wide Walling delivered in all these aspects. If you want the best concrete palisade fencing company in the industry, then Country Wide Walling is the right fencing company for your walling projects.

WE OFFER YOU:
Direct from factory
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CONTACT US:
TEL: 011 743-2222
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ADDRESS: 7th Street,
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Brakpan, Plot 222,
East Rand, Gauteng,
1540