Transom Repair Kit - Complete Fiberglass & Epoxy System for Boat Transoms

Name: Transom Repair Kit - Complete Fiberglass & Epoxy System for Boat Transoms
Brand: Boat Suppliers
SKU: SK-TRK001
Price: 109.95 USD
Availability: InStock

Transom Repair Kit - Complete Fiberglass & Epoxy System for Boat Transoms

SKU:SK-TRK001

$109.95 USD

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17 in stock

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Everything except the plywood for rebuilding a soft or rotted boat transom the right way. Epoxy, not polyester, because a transom rebuild is a secondary bond to cured laminate and wood, and epoxy holds where polyester lets go. No shrink, superior adhesion, and a long enough working time to wet out heavy 1708 without racing the clock.

What is in the kit:

Quart epoxy resin kit with medium 3:1 hardener (42.7oz mixed)
3 yards x 50" of 1708 biaxial fiberglass, the standard transom laminating fabric
1 LB of 1/4" chopped strand fiberglass for structural bonding putty
1 Quart fumed silica thickener for fillets and gap filling
Fiberglass laminating roller for driving out air between layers
Prep & Fair wet/dry sandpaper 6-pack (120 through 400)
2 chip brushes, 4 mixing cups, 4 mixing sticks, plastic spreader, nitrile gloves

How the repair works: cut out the rotted core, bond new marine plywood (sized locally to your boat, not included) with thickened epoxy, then laminate 1708 over the new core in multiple layers, rolling out air between each. The chopped strand and silica mix into the epoxy for the structural putty and fillets the job needs.

Covers a typical outboard transom rebuild on boats up to about 20 feet. For bigger transoms, add a second epoxy kit and more 1708 from our by-the-yard listings.

Specifications

Resin: marine epoxy quart kit, resin plus hardener. Epoxy because a transom is a secondary bond to cured laminate
Reinforcement: 3 yd 1708 biaxial, 50" wide
Fillers: 1 lb chopped strand plus fumed silica, for structural thickened epoxy
Tools: 1/2" x 4" laminating roller, Prep & Fair sandpaper pack
Plywood core is NOT included. Source marine ply locally, it ships badly
Non-hazmat, ships everywhere including air and PO Box

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How to use this kit

Complete epoxy and 1708 system for rebuilding a soft boat transom. Every kit ships with this same sheet printed and in the box.

Safety: Epoxy resin and hardener are skin sensitizers: repeated contact can start a permanent allergy, so keep gloves on and never use solvent to clean epoxy off skin. Use soap and water. Grinding cured laminate and old rotted core makes respirable dust, so wear a respirator and eye protection. Ventilate the work area. Mixed epoxy in a mass generates heat, so spread leftovers out thin rather than leaving them in the cup.

What is in the kit

1 qt Epoxy resin kit, medium 3:1 hardener42.7 oz mixed, 32 oz resin plus 10.7 oz hardener
3 yd 1708 biaxial fiberglass, 50 in widethe standard transom laminating fabric
1 lb 1/4 in chopped strand fiberglassmixes into epoxy for structural bonding putty
1 qt Fumed silica thickenerfillets and gap filling
1 Fiberglass laminating rollerdrives air out between layers
6 Prep & Fair wet/dry sandpaper120 / 150 / 180 / 240 / 320 / 400 grit
2 / 4 / 4 Chip brushes, mixing cups, mixing sticks
1 / 1 pr Plastic spreader, nitrile gloves

You supply: marine plywood cut to your transom, acetone, a grinder, a respirator, clamps or screws, and masking tape.

Mixing epoxy (3:1 by volume)

Ratio	3 parts resin to 1 part hardener
Small batch	6 oz resin + 2 oz hardener
Full kit	32 oz resin + 10.7 oz hardener

Measure by volume in the graduated cups. Epoxy is not like polyester: off-ratio does not cure slower, it never fully cures. Confirm the ratio printed on your hardener bottle.

Stir 2 minutes scraping the sides and bottom, then pour into a second cup and stir again. Unmixed resin on the cup wall is the number one cause of soft spots.

The job, start to finish

1

Open it up and gut it

Cut the inner skin off the transom and dig out every bit of wet or rotted core. If a screwdriver sinks into it, it goes. Grind the inside of the outer skin back to clean glass and wipe with acetone. Take a template off the old core before you throw it away.

2

Mix and butter

Mix epoxy 3 to 1, then stir in chopped strand and fumed silica until it holds a peak like thick peanut butter. Butter the outer skin and both faces of your new plywood. Leave no dry spots: a void here becomes the next rot pocket.

3

Bond the new core

Set the plywood into the putty and clamp or screw it tight until squeeze-out appears all the way around. Tool the squeeze-out into a fillet at every edge. If you are laminating two plywood layers, bond them together at the same time. Cure overnight.

4

Laminate the inner skin

Sand the cured putty, wipe it clean, then laminate 1708 over the new core in multiple layers, wet on wet, carrying each layer a few inches onto the surrounding hull. Roll air out of every layer with the roller before the next goes on.

5

Fair and seal

Fill the weave with silica-thickened epoxy and sand fair through 120 to 400. Seal every bolt hole you drill by overdrilling, filling with thickened epoxy, and redrilling through the cured plug, so water can never reach the wood again.

Works onSoft or rotted outboard transoms on fiberglass boats up to about 20 feet. Also stringers, bulkheads and knees.

Not forAluminum boats and polyethylene hulls. Plywood is not included: cut it locally to your boat.