Applying fibreglass over wood can be done using fibreglass cloth and epoxy resin. Fibreglass is a popular material used in boats, cars and recreational vehicles due to it being lightweight and a good weather protectant. Fibreglass will bind with the wood and give it protection from water. The following steps will cover the tools, materials and application techniques needed in order to apply fibreglass over wood.
Mix epoxy resin and epoxy hardener according to the manufacturer's directions.
Apply the first thin coat of epoxy resin using a brush roller. Allow to dry.
Cut fibreglass cloth to appropriate size and tape to the wood. Make sure the fibreglass cloth lies flat and smooth on the wood. Overlap connecting pieces of fibreglass cloth by one inch.
Working quickly, apply a second coat of epoxy resin over the fibreglass cloth using a brush roller. Work on small areas at a time, removing each piece of tape as you get to it. Apply enough epoxy resin to fully saturate the fibres of the fibreglass cloth. Do not apply the epoxy resin any thicker than required to fully saturate the fibreglass cloth.
Brush over the epoxy resin with a plastic squeegee to push out any air bubbles. Let the epoxy resin dry.
Sand any bumpy areas of epoxy resin with sandpaper. Be careful not to damage the fibreglass cloth.
Apply a third thin coat of epoxy resin using a brush roller. Use a foam brush to smooth out the epoxy resin. Let the epoxy resin dry.
Sand any bumpy areas of epoxy resin with sandpaper.
Apply a fourth and final thin coat of epoxy resin using a brush roller. Use a foam brush to smooth out the epoxy resin.
Lightly sand any areas of the fibreglass that needs to be smoothed. Fibreglass can be painted with gel coat paint.
Clean paint brushes, brush rollers and squeegees after use with soap and water. Rinse thoroughly to remove any soap residue.
Wear a mask when sanding epoxy.