To protect your house’s interior and exterior walls from mold and mildew, I recommend using high-quality mold-resistant paint, reduce darkness plus dampness, or clean the surfaces regularly.
So, mold and mildew are unattractive and will end up damaging the wall surfaces. So, let’s get into how you can prevent their emergence and growth.
How to Prevent Mold and Mildew on Walls
1. Use mold-resistant and high-quality paint
Mold and mildew are common in humid and hot climates. But you can use appropriate mold-resistant paint to prevent the growth of mold and mildew. However, color doesn’t kill mold spores, and thus simple applying a new coat of paint won’t solve the mold and mildew problem.
So, first, treat the wall surfaces using TSP-bleach or bleach-based solution before scrubbing the surfaces with some soft brush and finally rinse to remove all the residue. Also, ensure you purchase paint that has mildew- or mold-cides.
Paint hinders material deterioration
Notably, painting directly over mold and mildew walls could lead to more issues. The existing mold spores will infect your new paint coat, and thus promotes their growth.
The mold spores will feed on the wall materials and hence allow water and moisture to leach into your structures. For example, such moisture may encourage the growth and spread of dry rot fungi in wood – this deteriorates its structural integrity and strength.
Mold inhibitors prevent reproduction for some time
The paint’s mold inhibitors will get into the mold spores and thus disrupt their growth and reproduction functions.
However, the anti-mold coating will still be affected by rainwater, water, and UV radiation, causing small holes or hairline cracks. Therefore, repair all the first signs of the wall or paint cover deterioration before getting extensive damage.
2. Prunes Shrubs and Trees
The next step will involve pruning any shrubs and trees around your wall surfaces as this will enhance ventilation and lighting in the outdoor spaces. Therefore, you won’t have mold and mildew growing on the porch ceiling, under eaves, or wall corners.
You can also hire professional painters to take care of any mold that may be tuck on porous wood or stone walls.
Removing the trees around the structures allows air and sunlight to keep moving in the indoor spaces. Besides, the use of exhaust and ceiling fans or dehumidifiers will be helpful, particularly on damp spots or basements.
Aluminum window frames may also promote mold and fungus growth. So, clean them with a mixture of water and bleach daily. Also, you may use rubbing alcohol on the aluminum frames to avoid mold attacks.
Use specialty point coating
So, use the various mold-resistant paint coatings on your exterior and interior wall surfaces. However, those paints are toxic to pets and humans. So, put on some gloves, safety glasses, and a mask.
Avoid flat paints or those made with linseed oil since they promote the growth of mold and mildew – particularly on wall surfaces that are already affected by mildew and mold. Further, regular repainting and pressure washing the wall will protect the wall surfaces more.
3. Use dehumidifiers, exhaust fans, and ceiling fans
As noted earlier, you must clean and sanitize the exterior walls. Also, clean your interior walls with household bleach (3:1) – and finally rinse and leave to dry.
Further, install dehumidifiers, exhaust fans, and ceiling fans, mainly in the kitchen, laundry area, and bathrooms to prevent mold and mildew development.
For the exterior surfaces, allow direct sunlight while also redirecting any water or moisture sources away like leaky gutters, sprinklers, or air conditioners leaking or dripping.
Outside, the structure, remove any object that may make the exterior surfaces wetter. For example, trees and plants adjacent to your house’s walls could lead to the accumulation of water or moisture and promote the growth of mold and fungi.
Water sprinklers may also douse your wall’s surface and not the intended lawn. So, redirect theses sprays and repair any leaking gutters. Further, pressure washes the underside and side of your roof’s overhang regularly.
Clean off the leaves that could be piling around the wall’s foundation. Even better, it would help if you cleared the shrubs and bushes from around the structures – this reduces both moisture accumulation and darkness.
So, to prevent mold and mildew growth on your walls, avoid the use of lower-quality paints, failure to prime surfaces before painting, having excessive darkness and dampness, and painting over some coating or substrate with mold or mildew.