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 Kind of Paint to Use on Concrete

bestconcretepaint

As mediums for painting go, concrete is not one of the better ones. It transfers moisture from the ground or surrounding dirt, and it breathes and sucks up paint like a kid with a soda. Concrete requires special paint that contains binders that contract and expand right along with the surface.

Do not use oil-based or acrylic house paints on concrete or you’ll just have to paint it all over again, because acrylic paints peel, crack and just can’t take the abuse that concrete patios, sidewalks and driveways undergo.

For more information and a free quoatation, please contact Country Wide Walling today.

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How to Paint a Fence

painted boundary fenceBesides its cosmetic effects, paint provides outdoor structures with protection against the elements. Fences, in particular, need a protective coat of paint every 2 to 3 years. They're usually built away from other structures and trees, which could otherwise shield them from the elements. Paint helps iron and metal constructions resist rust and corrosion. It also fortifies wood against the effects of wind, rain, snow and extreme temperatures. Fence-painting is a time-consuming, but important, undertaking. By doing it at suggested intervals, you can strengthen the fence, reducing the likelihood of it needing to be replaced. If you want to learn how to paint a fence, follow these steps.

Prep the area around the fence. Preparation is a critical phase of fence-painting. You want to protect the vegetation along the fence line while readying the surface for painting. This is a time-consuming process, but it makes the job easier.

  • Mow and edge the grass along the fence line. Trim back bushes and shrubs that abut the fence. Use a leaf blower to blow dirt and grass clippings away from the fence line.
  • Spread a drop cloth or plastic sheeting under the section of fence you'll be painting. Keep it in place throughout the project to collect residue from prep work and protect against spills.
  • If the fence was previously treated, scrape off loose or flaking paint.
  • Pressure-wash or sand a new, untreated wood fence. It's best to sand a fence that was painted before. This helps the paint adhere to the wood. If necessary, use a scrub brush and a 1-to-1 mixture of bleach and water to eradicate mold on the fence. Let the surface dry.
  • If you're painting iron or metal fencing, use a steel brush to remove rust and then sand the surface with medium-grit sandpaper.
  • After sanding, wipe off residue with a clean rag.
  • Seal and tape off parts of the fence you don't want to paint, like ornaments, gate latches and handles and other hardware.

fence paint

Pick the right paint for your job. Make sure you use an outdoor paint on your fence. These are specially treated to withstand the effects of weather and come in a variety of types.

  • Acrylics: Acrylic paint is durable, providing an excellent layer of protection for your fence, but you might have to apply a primer to an untreated surface before you can paint.
  • Acrylic stains: Stains bring out the natural beauty of the wood and usually don't require the primer coat that paints do. They also are easier to re-coat and require minimal surface prep.
  • Oil-based outdoor paint: Oil-based paints may require multiple coats and may not protect as well as acrylics, but they do provide a superior-looking finish.
  • Enamels: Enamel paint is ideal for iron fencing and gates. Usually, you'll need to treat the surface with a rust-inhibiting primer.
  • Automotive epoxy paint: The benefits of automotive epoxy are, it's a 1-step process and is very durable. You will have to mix in a hardener with this paint, which does force you to get the job done within about 6 hours.

For a free quotation, or to discuss your requirements, please contact Country Wide Walling.

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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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Our own contractors
Free quotes
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Clean site on completion
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CONTACT US:
TEL: 011 743-2221/2/3/4
EMAIL: cwwreception@yahoo.com
ADDRESS: 7th Street,
Witpoort Estate,
Brakpan, Plot 222,
East Rand, Gauteng,
1540