Filling over fibreglass cloth

Do you want smooth walls and are looking to coat fiberglass wallpaper? Our technical experts, Raphaël and Jérémy, share their professional tips to make applying coating on fiberglass wallpaper easier. Learn how to effectively coat fiberglass wallpaper with Prestonett G, a powder rough coat, and Prestonett F, a powder finishing coat.

8-Step Guide to Successfully Applying Coating on Fiberglass Wallpaper

Fiberglass wallpaper is a type of wall covering made from glass fibers, which give it a textured surface and durability. To achieve smooth walls, follow our professionals’ advice through these eight steps.

Step 1: Assess the Surface Condition

Before starting, inspect the walls for any bubbles or tears in the wallpaper. For old paint, our experts recommend priming to improve the adhesion of the coating and prevent it from peeling off after application.

Step 2: Preparing the Coating

Beissier and their consultants, Raphaël and Jérémy, recommend using two types of Prestonett coatings. The first is Prestonett G, a powder rough coat known for its easy preparation, smooth application, wet-on-wet layering, and easy sanding. The second is Prestonett F, a finishing coat available in powder or ready-to-use paste, appreciated by our clients for its easy preparation, smooth application, long working time, fine texture, and easy sanding.

Step 3: Mixing the Coating

Begin by preparing your coating: pour water into a bucket and sprinkle the coating powder. Mix with a paddle mixer until you get a homogeneous, lump-free paste. Let it sit.

Step 4: Applying the First Layer

Use your coating knife or spatula, and curve the corners of the blade to avoid leaving marks. Apply the first layer of coating, working from the edges and smoothing out the corners. The working time for the coating is one day.

Step 5: Applying the Second Layer

Apply the second layer wet-on-wet, using a thicker layer depending on the texture of the fiberglass wallpaper to achieve a smooth finish.

Step 6: Sanding

Let the coating dry for 24 hours and sand with 150-180 grit sandpaper. Use the abrasive appropriately, hand-sanding small or delicate areas and using a machine for larger, flat, and less fragile surfaces. After sanding, dust thoroughly to avoid peeling, micro-bubbling, or blistering of the coating.

Step 7: Applying the Finishing Coat

After the rough coating, prepare the Prestonett F finishing coat. Similarly to the first coat, pour water into a bucket, add the powder, and mix with an electric mixer or hand mixer until you have a fine, lump-free paste.

Step 8: Final Application

Your finishing coat is ready. Apply a thin layer using your coating knife, spreading the coat along the wall at an angle to prevent drying defects. Let it sit for 24 hours and sand with 220 grit sandpaper.

Once your surface is smooth and sealed, apply two coats of paint! By following these steps, you’ll achieve a professional finish on your fiberglass wallpaper, creating smooth, beautifully coated walls.