Doing a fiberglass deck repair requires a very thorough examination of the deck surface. Any soft spots of the plywood decking needs to be removed and replaced. Sometimes the fiberglass surface has been deteriorated to the point that there are cracks and delamination over the entire deck surface. Sadly when this is the case the entire plywood surface has to be replaced. In the case of this deck there was a series of cracks down the center of the deck, this caused the plywood to rot. The rest of the fiberglass decking was still in good shape and all that needed to be done for prepping it was grinding the entire surface.
When doing a fiberglass deck repair in the winter the sundeck needs to be properly protected from the rain as well as from freezing temperatures. The tarp needs to be suspended above the deck surface and draped down to the ground. We then use a diesel heater below the deck to bring the temperature up to around 15 degrees. Its important to keep the heater on for at least 6-8 hours after the new deck membrane has been installed.
When doing a deck repair one of the first things to consider is what type of decking you should use. There are quite a few options available, Vinyl Decking, Liquid Membranes, and torch on. Typically for fiberglass decks the best material is a liquid membrane, the reasons are as follows. A liquid membrane by Sonneborn has an extremely high ability to bond to the old fiberglass decking. The liquid membrane also is self levelling and seeing how most fiberglass decks has large areas of lifts and valleys the liquid will fill in the low spots and give you a nice flat surface.