Even the highest-quality coating can only perform as well as the surface beneath it. Cracked concrete, stucco, or wood can compromise adhesion, allow moisture intrusion, and shorten the lifespan of the entire coating system. Before applying any INSECO coating, proper crack repair is essential for long-term durability and professional results.
Start by identifying the type and severity of the crack. Hairline cracks may appear harmless, but they can allow moisture to seep in and expand over time. Wider or deeper cracks often indicate structural movement or substrate stress that must be addressed before coating. For concrete, use a crack gauge or feeler gauge to determine width — anything larger than 1/16 inch typically requires filler or patching material. In wood, look for splits caused by sun exposure, rot, or moisture cycling, and assess whether damaged boards should be replaced rather than repaired.
The next step is cleaning. Remove all dirt, loose material, and contaminants from the crack area using a wire brush, vacuum, or pressure wash (depending on the surface). Cracks must be completely clean and dry before any repair compounds are applied. Trapped debris or moisture can prevent fillers and coatings from bonding effectively. For larger or active cracks, consider using a flexible repair compound that allows for natural substrate movement. INSECO-compatible patching materials and primers ensure that repaired areas integrate seamlessly with the coating system that follows.
Once the repair material is applied, allow full cure time as recommended by the manufacturer. Applying coatings too soon over uncured patches can lead to blistering, bubbling, or delamination. After curing, lightly sand or smooth the repaired surface to match surrounding textures, then clean once more to remove any dust or residue. Only then should the surface be ready for primer and coating application.
INSECO coatings are engineered to enhance protection and aesthetics, but proper preparation — especially crack repair — determines how long that protection lasts. Taking the time to evaluate, clean, fill, and prepare cracks not only ensures a flawless finish but also maximizes the life and performance of every INSECO product. A little extra effort before application can save years of maintenance and ensure your projects stand the test of time.
