What You’ll Need

• Strong Technical Degreaser for Resin Projects – 100% Natural Formula: A gentle cleaner suitable for removing grease, silicone, and contaminants from delicate resin surfaces.
• Heavy Duty Scraper for Paint and Epoxy Resin Removal: For safely lifting loose, flaking resin and paint prior to repairs.
• Resin Fibreglass Repair Kit – Complete Polyester Resin and Hardener Set: Used to repair and reinforce damaged or missing roof sections.
• CROP 2K Fiberglass Putty – 750 ml + Hardener: Ideal for filling cracks, dents, and providing a smooth base for priming and painting.
• A suitable primer and UV-resistant roof paint for exterior resin surfaces.
• Protective gloves, mixing tools, brushes, masking tape, and sanding paper (various grits).

Preparing Damaged Resin Roofs for Repair

Preparation is the key to effective restoration. Before you begin repairs or painting, methodically remove all loose resin and previous paint using the right tools. Remember, patience in this early stage prevents future issues with adhesion or leaks. Clean with a natural degreaser to create the ideal base for your repairs and finish.

Step 1: Remove Loose and Crumbling Resin

The first priority is to prepare your RV roof by eliminating all compromised areas. Using a Heavy Duty Scraper for Paint and Epoxy Resin Removal, gently scrape away flaking resin and paint, working carefully to avoid gouging the intact substrate. Ensure you also clear any loose debris around seams, edges, or fixtures for a clean working area.

Once the visibly loose material is removed, gently sand edges of exposed patches to feather them into the surrounding surface. Completely remove loose material to avoid repair failures later on.

Step 2: Clean and Degrease the Roof Surface

Even if the surface looks clean, hidden oils or contaminants can prevent new repairs from bonding. Apply your Strong Technical Degreaser for Resin Projects – 100% Natural Formula with a clean cloth, making sure to treat all areas including seams and corners.

Allow time for the degreased surface to dry fully before proceeding. Silicone or oil residues can prevent adhesion, so cleaning is critical before moving on to any repairs.

Step 3: Patch and Reinforce Damaged Areas

For sections where the resin has crumbled or holes have appeared, use the Resin Fibreglass Repair Kit – Complete Polyester Resin and Hardener Set. Follow the kit’s instructions to mix and apply the polyester resin and fibreglass matting, firmly reinforcing weak spots or gaps. Position the fibreglass to slightly overlap the damaged area, ensuring full coverage and waterproof sealing.

Allow each repair stage to cure thoroughly as per the manufacturer’s guidelines before handling or introducing further layers.

Step 4: Fill and Smooth the Surface

After structural repairs have set, smaller cracks, shallow dents, or surface irregularities can be addressed using CROP 2K Fiberglass Putty – 750 ml + Hardener. Carefully spread the putty, pressing it into voids and feathering the edges for a seamless blend. Once cured, sand down the area to produce a flush, even finish that’s ready for priming.

Aim for a uniform, smooth surface. Heavy sanding may cause more damage to fragile areas, so use light pressure and fine-grit paper near repairs.

Step 5: Prime and Paint for Long-Lasting Protection

Once all repairs are fully cured and sanded, apply a primer designed for resin or composite surfaces. Priming ensures proper adhesion and longer paint life. When the primer is dry, finish with a high-quality, UV-resistant paint suitable for exterior resin roofing.

Follow manufacturer drying times and application instructions for each product. Ensure the roof is fully dry before painting to avoid bubbling or peeling paint.

Use suitable primer and paint—this is crucial for weather resistance and long-term durability.

Tips and Common Mistakes to Avoid

• Work on a dry, mild day to avoid moisture or humidity impacting repairs and paint cure times.
• Always use protective gloves and masks where necessary.
• Don’t rush through drying and curing phases—patience yields the best results.
• When in doubt, consult the product instructions or seek expert advice for specialist requirements.

Troubleshooting: If repairs don’t bond or paint peels, check for inadequate surface prep or trapped moisture. Re-clean and repeat the affected step as needed.

Achieving Smooth, Lasting Results

Investing time in proper repair and finishing ensures years of weather protection. Each repair—whether patching holes or applying putty—should be allowed to cure fully before the next step. Use compatible materials for filling and painting, and always work in good weather conditions for the best outcome.