---
product_id: 66639775
title: "TotalBoat Polyester Structural Repair Putty - Marine Grade Long Strand Fiber Fiberglass Reinforced Filler for Boat and Automotive Repair"
brand: "totalboat"
price: "$460"
currency: NZD
in_stock: true
reviews_count: 8
category: "Total Boat"
url: https://www.desertcart.nz/products/66639775-totalboat-polyester-structural-repair-putty-marine-grade-long-strand-fiber
store_origin: NZ
region: New Zealand
---

# Waterproof for marine & automotive use 15-20 min working time at 70°F Fiber-reinforced polyester putty TotalBoat Polyester Structural Repair Putty - Marine Grade Long Strand Fiber Fiberglass Reinforced Filler for Boat and Automotive Repair

**Brand:** totalboat
**Price:** $460
**Availability:** ✅ In Stock

## Summary

> 🛥️ Fix it once, fix it right — marine-grade strength that won’t quit!

## Quick Answers

- **What is this?** TotalBoat Polyester Structural Repair Putty - Marine Grade Long Strand Fiber Fiberglass Reinforced Filler for Boat and Automotive Repair by totalboat
- **How much does it cost?** $460 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/66639775-totalboat-polyester-structural-repair-putty-marine-grade-long-strand-fiber)

## Best For

- totalboat enthusiasts

## Why This Product

- Trusted totalboat brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Marine-Grade Waterproofing:** Use confidently above or below waterline—resists water, corrosion, and environmental wear.
- • **Unmatched Structural Strength:** Long strand fiberglass fibers deliver superior crack & impact resistance for lasting repairs.
- • **Fast-Setting & Sandable Finish:** Cures hard in 24 hours, sands easily for seamless overcoating with fairing compounds or gelcoat.
- • **Versatile Multi-Surface Bonding:** Bonds fiberglass, wood, metal, polyester laminates & core materials—ideal for boats, autos, and home projects.
- • **Effortless Application & Control:** Pre-thickened paste consistency spreads smoothly without sagging; adjustable catalyst for perfect working time.

## Overview

TotalBoat Polyester Structural Repair Putty is a premium marine-grade, fiber-reinforced polyester filler designed for high-strength structural bonding and repairs on fiberglass, wood, metal, and composites. Waterproof and fast-setting, it offers 15-20 minutes of working time with adjustable catalyst, cures hard in 24 hours, and resists cracking or shrinking. Ideal for boat hulls, decks, automotive bodywork, and more, it spreads smoothly without sagging and sands easily for professional finishes. Includes MEKP hardener and is made in the USA.

## Description

TotalBoat Polyester Structural Repair Putty is ideal for boat building and repair applications where high-strength structural bonding is critical, such as hull to deck, stringers to hull, liner to hull, and bonding bulkheads. It’s also great for bonding dissimilar composite, fiberglass, wood and metal parts. Its unique combination of high-strength polyester resin and long strand milled glass fiber provides maximum crack and impact resistance in large masses. Just bang it on in one big shot and it holds its shape well as it hardens. This fast-setting marine filler spreads smoothly, is quick to take a radius, and can be built up quickly without sagging. Perfect for fast, easy repairs to fiberglass parts, molds, hulls, decks, canoes, kayaks, runabouts,and more.Polyester Structural Repair Putty is waterproof and great for filling cracks, holes, chips and dents in fiberglass and gelcoat, above or below the waterline. This polyester putty is designed for structural bonding, not cosmetic fairing. For repairs requiring a smooth, easy-to-sand finish, apply TotalBoat Polyester Fairing Compound over Polyester Structural Repair Putty. After the fairing compound cures, sand smooth to prepare for gelcoat, such as TotalBoat Gelcoat with wax, or paint, such as TotalBoat Wet Edge topside paint. If you’re not overcoating the putty with fairing compound, you need to add an air-dry agent such as paraffin wax (4 oz. of wax per gallon of putty) or apply PVA (polyvinyl alcohol) over it. Putty comes with MEKP catalyst (use 1-2% MEKP). This economical, general-purpose, fiberglass filler can also be used to fill joints in sheet metal and fill cracks & voids in wood, masonry, and concrete, making it ideal for automotive, rv and home repair. Compare to Merton's Hull and Deck, 3M Marine High Strength Repair Filler, FGCI Polyester Putty, and Bondo Long Strand Fiber Reinforced Filler. All TotalBoat products provide great value and great results. 100% made in the USA.

Review: Great repair and structure filler! - Great product!! A+
Review: Goes on smooth, stays put and doesn't run, dries extremely hard! - After I reinforced a hole in the hull with fiberglass and resin, there was still a low spot. I figured it would take forever to keep filling it in with resin, plus the resin is extremely runny so it is hard to get it to stay in the low spot. I came across this putty and out of the can it is extremely workable, not runny, does not sag and stay put. Even mixing in the liquid hardener does not effect it or make it runny. I applied it to the hull and it literally took one coat and evened the low spot out. I mean it goes on so smooth, and you have plenty of time to work with it before it starts to get tacky. The price is very fair compared to other stuff like Bondo which they say you don't want to use for these types of repairs. I have yet to sand it, but it is extremely hard and nothing an orbital sander can't handle. Hope this review helps as I was going back and forth on what fiberglass to use.

## Features

- PRE-THICKENED FIBER REINFORCED POLYESTER PUTTY for high-strength structural filling, fitting, bonding, bedding & radius forming; great for boat building & repair on fiberglass, wood, metal, polyester laminates & core materials; use above or below waterline
- MARINE FILLER has premium polyester resin and long strand glass fibers for strength, impact resistance & elasticity; ideal for bonding decks, stringers & liners to hulls; filleting and bonding bulkheads, and filling screw holes, bolt holes, chips & dents
- EASY TO MIX, EASY TO APPLY: For a 100g mass, catalyze with 1% MEKP to get 15-20 min. of working time at 70°F (14 drops of MEKP per ounce of putty); adjust amount of catalyst to control working time; paste-like consistency is easy to spread and won’t sag
- FAST-SETTING STRUCTURAL ADHESIVE is ideal for fiberglass & gelcoat repair; for cosmetic fairing, overcoat Polyester Structural Repair Putty with TotalBoat Polyester Fairing Compound; it sands smooth easily & can be finished with TotalBoat Gelcoat with wax
- AVAILABLE IN QUART AND GALLON KITS: Includes 2 oz. MEKP. This versatile bonding compound can bond dissimilar materials and can also be used in many home, auto, construction, and aerospace applications, with no shrinking or cracking, even in bulk fillings

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07BR5VNH1 |
| Best Sellers Rank | #17,658 in Automotive ( See Top 100 in Automotive ) #35 in Body Repair Putty #231 in Body Repair Tools |
| Brand | TotalBoat |
| Brand Name | TotalBoat |
| Color | white |
| Compatible Material | Concrete, Fiberglass, Glass, Metal, Wood |
| Container Type | Can |
| Customer Reviews | 4.6 out of 5 stars 824 Reviews |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00811932023704 |
| Included Components | Repair Putty, Hardener |
| Item Form | Putty |
| Item Package Quantity | 1 |
| Manufacturer | TotalBoat |
| Material | Resin |
| Material Type | Resin |
| Model | 811932023704 |
| Package Information | Can |
| UPC | 811932023704 |
| Unit Count | 1.0 Count |
| Viscosity | Moderate |
| Volume | 4 Fluid Ounces |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** TotalBoat
- **Color:** white
- **Item Form:** Putty
- **Item Package Quantity:** 1
- **Material:** Resin

## Images

![TotalBoat Polyester Structural Repair Putty - Marine Grade Long Strand Fiber Fiberglass Reinforced Filler for Boat and Automotive Repair - Image 1](https://m.media-amazon.com/images/I/71slwOjBwPL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: If i used the entire gallon i assume i would use the entire bottle of catalyst. this would be for an art project. what di i add to make it pourable?**
A: Yes 2oz per gallon. You should have about 15 minutes depending on temperature before it starts to gel

**Q: Is there wax added in it?**
A: no wax .fast curing. Don't make a big batch... Great stuff, easy to work with.

**Q: I am doing a deck repair in my 68’ fiberform yellowstone.  can i use epoxy primer over the repair putty and to seal the plywood?**
A: Hi there,

Thank you for reaching out.

You can only put a coating other than Gelcoat/another polyester Laminating resin over the top of this product when it has been surface cured and prepped. The Polyester Structural repair putty stays tacky to receive other Polyester resin products. You would need to Seal it with Totalboat Polyester Finishing resin/Totalboat Polyester Fairing compound/Totalboat Gelcoat with wax/PVA then prep per primers instructions.

**Q: How much area will 1 qt cover?**
A: Honestly it depends on the thickness you need.  This is for filling small holes or building up areas that have been damaged, not for laying fiberglass down.  It will cure quickly so work in small batches.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great repair and structure filler!
*by A***R on December 22, 2025*

Great product!! A+

### ⭐⭐⭐⭐⭐ Goes on smooth, stays put and doesn't run, dries extremely hard!
*by C***L on May 15, 2025*

After I reinforced a hole in the hull with fiberglass and resin, there was still a low spot. I figured it would take forever to keep filling it in with resin, plus the resin is extremely runny so it is hard to get it to stay in the low spot. I came across this putty and out of the can it is extremely workable, not runny, does not sag and stay put. Even mixing in the liquid hardener does not effect it or make it runny. I applied it to the hull and it literally took one coat and evened the low spot out. I mean it goes on so smooth, and you have plenty of time to work with it before it starts to get tacky. The price is very fair compared to other stuff like Bondo which they say you don't want to use for these types of repairs. I have yet to sand it, but it is extremely hard and nothing an orbital sander can't handle. Hope this review helps as I was going back and forth on what fiberglass to use.

### ⭐⭐⭐⭐⭐ Great stuff!
*by B***Y on September 12, 2025*

I would buy again. Easy to use. No issue, just make sure you are in a well-ventilated area.

## Frequently Bought Together

- TotalBoat Polyester Structural Repair Putty - Marine Grade Long Strand Fiber Fiberglass Reinforced Filler for Boat and Automotive Repair
- TotalBoat-14409 Marine Gelcoat for Boat Building, Repair and Composite Coatings (White, Quart with Wax)
- TotalBoat Polyester Fairing Compound (Gallon Kit)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-01-27*