How to Professionally Clean Walls Before Painting

how to professionally clean walls before painting

You are thinking about adding a new colour to your interior or exterior walls. But before holding a paintbrush and starting painting, stop and don’t be in hurry. Have you cleaned the walls before painting? If yes, then carry on: if not, keep reading and explore the professional way to clean walls before painting.

Cleaning Walls For Painting

Don’t underestimate cleaning walls before painting because it is an important step. The condition of the wall surface will enhance the paint’s durability and adherence. Both exterior and interior wall surfaces have different cleaning treatments.

For example, exterior walls’ surfaces are harder to bear pressure washer and durable due to sunlight as compared to interior wood panelling, stucco, drywall and other materials. Interior surfaces should be handled carefully and gently.

Professional Tips to Clean Walls for Painting:

Good Basic Scrub Rinse

Warm water and a sponge is all you need to make sure your dirty walls are neat and clean. Scrub in the circle shape and scrub all the wall surfaces more importantly don’t forget to clean corners and nooks. Also, add some grease-cutting detergent for an extra good result to the water to remove any scuff and smears. After walls scrubbing and rinse with soft water and wipe with a damp towel to dry before painting.

You can turn on a fan on speed if you want a speedy result.

This is a low-cost homemade formula and works well for adding an extra shining to a new wall painting.

Remove Mould and Mildew From Walls

Repainting a bathroom, basement or other humid space might leave mildew or mould behind. To remove them, use three-part water to one part bleach solution. Without this step, untreated mildew could grow through the new coat and affect it.

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Cleaning Walls Surface Through Chemical

As part of a large-scale renovation, when particles, chemicals, and other materials may impact the integrity of your drywall, we recommend thoroughly washing the walls. Make sure all surfaces are thoroughly cleaned using a commercial cleaner such as Trisodium Phosphate (TSP). All types of dirt, grime, scuffs, soot, and soiling are removed by TSP. Despite being a bit more expensive, this process will leave your surface cleaner than ever.

Sanding For a Smooth Finish

When working on the surface of an older surface or one that has chipped paint, sanding rough or uneven spots is crucial. If there are bumps or irregularities, smooth them out with fine grain sandpaper and a sanding block, then wipe the dust clean. Smooth surfaces are easier to paint.

Exterior Preparation for Wall Cleaning

There are two ways to clean the exterior siding of your home before painting. You can first use a power washer to spray the entire house down. It will take the least amount of time and effort to do this. When used properly, high pressure can remove dirt, mildew, and whatever else is left behind, but it can also miss some fine details or damaged siding.

To make sure that everything is spotless, scrubbing by hand with a TSP solution is an alternative. Compared to renting a power washer, this is less expensive, but it is time-consuming and labour intensive.

Least Expensive Products for Wall’s Cleaning Surfaces

Preparation products range from the least expensive to the most expensive:

  • Using warm water and a sponge
  • Adding detergent to warm water and scrubbing with a sponge
  • Water and bleach solution (3 parts water, 1 part bleach)
  • Cleaner with TSP or chemical
  • Wash siding and walls only with a power washer
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No doubt, cleaning walls can be a bit boring and hard-working but in the long run, it will benefit you. By cleaning surfaces, paint works better and also improves the longevity of paint colour to adhere. Yet not want to jump into this task, then a professional house painter is on the way to do it for you.  

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