How to Replace Fiberglass Boat Flooring

Fiberglass boat flooring replacement is a common procedure that a lot of boat aficionados do to restore their boats. After several years of usage, the flooring of a boat can get damaged, particularly if it is left exposed to all weather conditions for a long time. Therefore, the flooring will need to be replaced. Here are some steps to follow and a list of the tools and materials required in order to change the flooring of a fiberglass boat.

Step 1 – Remove the Damaged Flooring

The most common material used for boat flooring is BC plywood, and it is also used for fiberglass boats in particular, so start by using an electric saw to cut off the old flooring, and if the stringers and bulkheads are rotten, get them replaced with fiberglass ones. Then, unscrew the center console box and the seat with an appropriate screwdriver and disconnect the center console from the cables. Remove any other remaining connections and get the console and the seat out of the way.

Step 2 – The Stringers

If you are also going to replace the stringers, make sure to take good measurements since each side can slightly vary, so it’s better to take separate dimensions for each stinger by using a carpenter square measuring from up to bottom and then create a list with the measurements of each stringer. Then, use the electric saw to cut the stingers from the plywood sheet and fit them in the boat. Screw all the stringers together to create a solid frame and apply fiberglass matting all over it for waterproofing.

Step 3 – The Deck

It is always recommended to cut the deck flooring into separate sheets so that it will be much easier to install. Measure the size of the deck and determine how many sheets you need for the deck, and cut off square holes for all the fittings on the deck. Start placing the deck sheets, and for every sheet, pass the cables and the other connections through the square holes before placing the next one.

Step 4 – Finishing the Deck

Once the deck is in place, attach the sheets together with screws so all will be in one piece. As with the stringers, apply fiberglass matting all over the deck to make it water resistant. Finally, fasten the deck with some screws with the boat edges and apply a sealant so that no water will penetrate the deck.

Step 5 – The Connections

Now that the deck is replaced, you only need to make the wiring connections, so place the center console in place, connect it with the cables, and screw it in place. Position the seat, fasten its screws, and start the engine to check whether or not the center console is properly connected.

Now the flooring should be properly installed and the boat ready for a trip. However, this job can be a rather difficult one if you don’t have any experience with wood cutting, so contact a carpenter to cut the plywood for you so that you will not make any mistakes when cutting the flooring.