Brick slips have become a popular way to add texture and character to interiors, but achieving a durable, high-quality finish depends on what happens before the first slip is fixed. One of the most important — and misunderstood — steps is applying PVA to the wall beforehand.
Walls are rarely as solid as they look. Plaster and plasterboard, in particular, act like sponges. When adhesive is applied directly, moisture is drawn out too quickly, reducing working time and weakening adhesion. This can cause brick slips to slip, fail to bond evenly, or develop problems long after installation is complete.
PVA works by sealing the surface and regulating absorption. By applying a diluted coat of PVA, you create a more predictable base for the adhesive. This allows the installer to work at a steady pace, adjust alignment, and ensure each brick slip beds properly into place.
One of the biggest advantages of using PVA is control. Brick slips require precision. Lines need to remain level, spacing must be consistent, and the slips themselves need time to settle. Without PVA, adhesive can grab too quickly in some areas and not quickly enough in others, making the process harder and less reliable.
PVA also helps reduce dust on older walls. Even when surfaces appear clean, fine particles can interfere with adhesion. A PVA coat binds this dust, creating a cleaner, more stable surface for fixing.
Correct application is key. PVA should be diluted according to the wall type and applied evenly. Over-application can create a glossy surface that actually reduces grip, while under-application won’t adequately control suction. The goal is a slightly tacky finish that enhances adhesion rather than replaces it.
Importantly, PVA is not a substitute for proper adhesive or correct installation techniques. It’s a supporting step, not a shortcut. When used correctly, it complements the adhesive, improving bond strength and consistency across the entire wall.
Brick slips are designed to be permanent features. Whether they’re used around fireplaces, in kitchens or as feature walls, they need a solid foundation. Applying PVA first ensures that the finished wall not only looks right on day one, but continues to perform well long into the future.