Applying a sealer to a commercial brick building seems like an excellent way to protect it from the elements. However, when the wrong product is applied, or if moisture gets trapped underneath, you face a frustrating phenomenon: failed sealer.
Instead of protecting your building, a failed brick sealer creates an ugly, milky-white haze or a yellowing, flaky film that ruins your property’s curb appeal. Worse, it traps moisture inside the brick, which can lead to severe structural crumbling over time.
At Midwest Maintenance, we specialize in the delicate science of masonry restoration. In this article, we’ll dive into why brick sealers fail and how our team safely strips away failed coatings to let your brick breathe again.
If you look closely at the project overview, you can see a distinct, wide band of white, cloudy discoloration running horizontally across the brick wall.
Many property owners mistake this white cloudiness for simple dirt, hard water stains, or efflorescence (salt deposits). However, that thick, milky film is a textbook example of a failed topical acrylic sealer.
Topical sealers form a plastic-like layer right on top of the masonry. If moisture rises up from the ground or seeps in from a tiny structural crack, it hits the underside of that plastic layer and can't escape. The moisture physically lifts the sealer off the brick surface, turning the clear coating into a cloudy, opaque eyesore.
A failed sealer is more than just a cosmetic nightmare. Brick is naturally porous; it needs to breathe.
When a non-breathable, failed sealer locks water inside the brick matrix, the structural integrity of the wall is put at risk. During typical Wisconsin freeze-thaw cycles, that trapped water expands into ice. This internal pressure causes the face of the brick to pop off, crack, or turn to powder—a highly destructive process known as spalling.
Removing a failed acrylic or silicone coating isn't as simple as turning up the pressure on a power washer. Blasting a wall with excessive, raw water pressure will permanently gouge the bricks and blow out the historic mortar joints.
As shown by our field technicians, a professional stripping process relies on chemistry, patience, and controlled heat:
You can see the clear, sharp line where our technician is actively rinsing the wall—the white haze disappears completely, exposing the natural, beautiful red tones of the original brick structure.
If your commercial building or historic home is suffering from a cloudy, white haze, don't let trapped moisture destroy your masonry. Let the specialized restoration crews at Midwest Maintenance strip away the failure and protect your investment.
[Contact Midwest Maintenance Today for a Free Masonry Evaluation and Estimate! ]
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