It’s important to apply a minimum of two coats, though more may be necessary depending on the type of paint you use and its color. In terms of application, it’s best to use an airless sprayer to apply a thin and even layer of paint, before immediately back rolling it and working on one small section at a time. Once again, elastomeric paint is the best type of paint to use for exterior concrete walls, though a premium 100% acrylic paint will also get the job done nicely. Last but not least, it’s time to get busy with the painting itself. If there’s any serious damage to the stonework, it may be necessary to call in the professionals. Elastomeric caulk is just about the best caulk you can use to tackle cracks and gaps in your stonework, applying in accordance with the manufacturer’s instructions. It’s always worth going over your stone surfaces as intensively as necessary to see if and where they could do with being repaired. If you come across any cracks or gaps that are likely to let water into the stonework, now is definitely the time to tackle them. As a rule of thumb, you’ll be needing somewhere in the region of 1 gallon of acrylic block fill primer for every 200 sq/ft of smooth concrete block surface. The rougher and more uneven the surface, the more acrylic block fill primer you are going to need to prepare it. You’ll need to apply the acrylic block fill primer to the mortar as well. Irrespective of whether there is already a coat of paint on the surface or not, you are going to need to use a quality acrylic block fill primer to seal it. Use the product in accordance with the manufacturer’s instructions, once again giving things plenty of time to dry before moving on to the next stage. An important tip from us – always use a quality premixed acrylic mortar patch, in order to save yourself the time and effort involved in mixing and drying the mortar yourself. Step 2 – Repair the MortarĪfter giving the whole thing plenty of time to dry, this is the perfect time to apply repairs to the mortar where necessary. If there is already an existing coat of paint in place, you may need to be somewhat more aggressive with the cleaning. If this isn’t an option, the combination of warm water, a sponge, a scrubbing brush and a good bit of elbow-grease will get the job done nicely. The best way of cleaning a concrete block wall being to tackle it with a pressure washer at around 2000 psi max. If there is any residual dirt or grime left over, it will have a detrimental effect on the final result. So if you’d like to touch-up your exteriors for a bright and beautiful summer ahead, here are the simple steps involved in painting a concrete block wall like a pro: Step 1 – Clean the WallĪs is the case with all exterior and interior painting jobs alike, the whole thing begins by giving the surface a comprehensive clean. It’s simply a case of taking a leaf from the books of the pros and approaching the whole thing strategically. The thing is though, stone surfaces need not be any more complicated to paint than any others. Stone surfaces in particular often being avoided due to presumptions regarding complications. The only downside being that concrete block walls also have a habit of looking bedraggled and uninspiring pretty quickly.įor most homeowners, exterior paint jobs that involve anything other than wood appear a somewhat daunting prospect. A decent concrete block wall effectively protect the home for decades on end. One of the best things about exterior concrete block walls is their extraordinary long-term durability.
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