Building Exterior Paint Maintenance


The exterior surfaces of a building can be cleaned and maintained to extend the life cycle of a paint job. Surfaces should be checked every year, or at least every two years to ensure the painted surfaces are protected from the elements.

– There should be no cracks or blisters of the paint.
– There should also be no cracks between the woodwork and main surfaces. If there are any cracks, they should be caulked again with acrylic caulking.
Any opening to the film of paint will allow water to penetrate and damage the surface.
– Fading of the paint finish and gloss usually means it is time for a new paint job.
– Mildew is another problem that can can develop on exterior surfaces. Cheaper paints and especially oil based paints can promote the growth of mildew. The good news is that mildew can be washed easily with a mixture of three parts water and one part bleach.
– Metal will sometimes develop rust if the paint film has openings for moisture. Ongoing rust presence is difficult to control. Limiting its growth and improving the appearance of the surface is all that can be expected at this time. Two coats of Direct to Metal paint after a rust primer can be used. 
– Masonry substrates sometimes have a powdery substance on their surface, called Efflorescence. That is a result of moisture from inside carrying white salts to the outside.
The source of the problem should be identified if a permanent solution is needed. If that is not possible, it can be cleaned with a wire brush, primed and painted.

Maintaining the exterior of a building makes financial sense as it can prevent serious damage to the building. To get an industry expert to help you with the maintenance of a building, call 416 479-0131. COMPASE and their Commercial Toronto Painters have been helping preserve buildings in the GTA.