How to Repair a Leaking or Damaged Roof

How to Repair a Leaking or Damaged Roof

A leaking or damaged flat roof can cause significant issues, from structural damage to internal water problems. Thankfully, with the right materials and a bit of know-how, you can repair your roof quickly and effectively.

One of the most reliable products on the market for quick and reliable roof repair is Cromapol, a fibre reinforced liquid acrylic resin. Designed for instant waterproofing, Cromapol is perfect for bridging small gaps and cracks with just a single coat. Below, we will guide you through the process of repairing your roof using Cromapol.

Cromapol acrylic roof coating offers reliable protection and adheres to a wide range of substrates, including flat and pitched roofs, rooflights, flashings, fibre cement corrugated sheets, gutters, slate, asphalt, roofing felt, lead, and metal surfaces.

Cromapol can be applied to either a small damaged area or across the entire roof surface.

What You’ll Need:

  • Cromapol roof repair acrylic coating.
  • AlphaChem Fungicidal Wash (for removing moss and lichen).
  • A stiff brush, roller, or squeegee.
  • Glass-Fibre scrim (for larger gaps or joints).
  • Protective gloves and old clothing (Cromapol is hard to clean off!)
  • Step-by-Step Repair Guide.

Surface Preparation:

  • Clean the Area: Start by clearing away any debris from the roof surface. This is crucial to ensure the Cromapol adheres properly. Use a stiff brush to remove dirt, dust, and any loose materials. For moss and lichen, apply AlphaChem Fungicidal Wash and scrub thoroughly. Make sure all gutters and corners are free of plant growth.
  • Check for Standing Water: Cromapol can tolerate damp surfaces, but standing water must be removed. Use a cloth or sponge to absorb any water, ensuring the surface is as dry as possible.

Pre-Repair Inspection:

  • Fill Cracks and Holes: Before applying Cromapol, inspect the roof for any cracks, splits, or small holes. These should be filled and made good to ensure a smooth application.
  • Address Larger Gaps: If you have any gaps or expansion joints greater than 3mm, you'll need to cover them with Glass-Fibre scrim and Cromapol before applying the full coat. This will ensure these areas are adequately reinforced and waterproofed.

Applying Cromapol:

  • Application Method: Cromapol can be applied with a brush, roller, or squeegee. Choose the tool that best suits the area you are working on.
  • Coating the Surface: Apply a generous coat of Cromapol evenly across the repair area. The high level of fibres in Cromapol will bridge small gaps, providing instant waterproofing. Since Cromapol is a one-coat application, there’s no need for multiple layers, which makes the process quick and efficient.

Final Touches:

  • Allow to Cure: Once applied, allow the Cromapol to cure. It will start working immediately to prevent water ingress, but full curing will depend on the weather conditions.
  • Disposal: Remember, the brush or tool you used for applying Cromapol cannot be cleaned and should be discarded after use due to the product's nature.

Additional Tips:

  • Best Results on Dry Surfaces: While Cromapol can be used on damp surfaces, you’ll achieve the best results if the surface is completely dry when you apply the coating.
  • Protective Gear: Wear old clothing and gloves during the application, as Cromapol is difficult to remove from skin and fabrics.
With these steps, you should be able to effectively repair your roof and prevent any further water damage. Cromapol is a reliable and straightforward solution, making it accessible even for those with minimal DIY experience.
Back to blog