Repairing the transom of the boat is a minor boat repair since the transom is the flat area located at the back of the boat. Repairing the transom is not that difficult if you have the right tools and equipment. Below is a detailed guideline on how to repair the transom on your boat.
Step 1 - Dry the Boat
To make any repairs to your boat or transom, you first need to get your boat out of the water and into a dry dock or a raised platform. This is to give you more access to the transom. Allow the transom to dry completely before you can start repairs.
Step 2 - Check the Damage
Before you remove any parts of the transom or make any repairs, it is important to assess the damage on your transom first. This is to help you determine how minor or major your boat repair is going to be. If all you need to do is repair a small hole, then you do not need much to repair the damage. However, if the transom is already rotten, then you would need to more than drill holes.
Step 3 - Remove the Transom
Cut the deck section of the transom to get to its core. Use the crowbar or hammer and chisel to carefully remove the transom.
Step 4 - Mark and Cut the Damaged Area
You then need to draw or mark the area where you need to cut the transom. The marked area should include the parts where there is damage. After you have marked the damaged area, you can cut it.
Step 5 - Cut the New Transom
After removing the damaged area, use this piece as a pattern to create a new transom. Place the piece on top of the first plywood. Draw out the shape and cut it accordingly. Test to see if this first sheet fits. After test fitting the first plywood, cut another piece using the same size.
Determine where the engine bolts and other hull openings are located on the original transom and mark these on your plywood. Drill these holes and place a wood stake or screwdriver in the hole to hold the two pieces of plywood together.
Step 6 - Add Fiberglass
Once you are done cutting the two plywood pieces, you can now fiberglass the two sheets together. Cover the exposed side with the fabmat or stitch mat. Place the air bubbles on top of these. Make sure that the air bubbles are laid out flat. Allow these to cure.
Step 7 - Sand the Edges
After curing, flip the plywood and round out the edges using sandpaper or a sander. Make sure the edges are sanded properly for it to fit correctly on to the boat.
Step 8 - Install the New Transom
When you are done sanding, place the new transom onto the boat and check if it fits. If it does, insert the transom and seal the edges with the adhesive.