---
product_id: 66639775
title: "Polyester Structural Repair Putty - Marine Grade Long Strand Fiber Fiberglass Reinforced Filler for Boat and Automotive Repair"
brand: "totalboat"
price: "₨70761"
currency: LKR
in_stock: true
reviews_count: 9
category: "Total Boat"
url: https://www.desertcart.lk/products/66639775-polyester-structural-repair-putty-marine-grade-long-strand-fiber-fiberglass
store_origin: LK
region: Sri Lanka
---

# Marine-grade waterproof Fast 15-20 min working time High-strength fiber reinforced Polyester Structural Repair Putty - Marine Grade Long Strand Fiber Fiberglass Reinforced Filler for Boat and Automotive Repair

**Brand:** totalboat
**Price:** ₨70761
**Availability:** ✅ In Stock

## Summary

> 🛥️ Reinforce, repair, and rule the waves with TotalBoat’s powerhouse putty!

## Quick Answers

- **What is this?** Polyester Structural Repair Putty - Marine Grade Long Strand Fiber Fiberglass Reinforced Filler for Boat and Automotive Repair by totalboat
- **How much does it cost?** ₨70761 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/66639775-polyester-structural-repair-putty-marine-grade-long-strand-fiber-fiberglass)

## 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

- • **Precision Workability:** Pre-thickened paste consistency spreads smoothly without sagging, giving you full control.
- • **Fast-Setting for Efficiency:** Catalyze with MEKP for a reliable 15-20 minute working window—get repairs done faster.
- • **Unmatched Structural Strength:** Long strand fiberglass fibers deliver superior crack & impact resistance for lasting repairs.
- • **Marine-Grade Waterproof Formula:** Perfect for above or below waterline use—resists water, salt, and harsh marine conditions.
- • **Versatile Multi-Surface Bonding:** Bonds fiberglass, wood, metal, polyester laminates & more—ideal for boats, autos, and home projects.

## Overview

TotalBoat Polyester Structural Repair Putty is a premium marine-grade, long strand fiberglass reinforced polyester filler designed for high-strength structural bonding and repairs. Waterproof and fast-setting, it works seamlessly on fiberglass, wood, metal, and polyester laminates both above and below the waterline. Its pre-thickened, non-sagging paste consistency ensures easy application and superior impact resistance, making it the go-to solution for boat builders, automotive pros, and DIY enthusiasts seeking durable, professional-grade repairs.

## 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: 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.
Review: Great repair and structure filler! - Great product!! A+

## 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 | #15,207 in Automotive ( See Top 100 in Automotive ) #29 in Body Repair Putty #195 in Body Repair Tools |
| Brand | TotalBoat |
| Brand Name | TotalBoat |
| Color | white |
| Customer Reviews | 4.6 4.6 out of 5 stars (831) |
| Date First Available | March 27, 2018 |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00811932023704 |
| Included Components | Repair Putty, Hardener |
| Item Form | Putty |
| Item Package Dimensions L x W x H | 8.78 x 7.72 x 6.93 inches |
| Item Package Quantity | 1 |
| Item Volume | 4 Fluid Ounces |
| Manufacturer | TotalBoat |
| Material | Resin |
| Number of Items | 1 |
| Package Information | Can |
| Package Weight | 4.71 Kilograms |
| Part Number | 512952 |
| Size | Gallon Kit |
| Style | Gallon Kit |
| UPC | 811932023704 |
| Unit Count | 1.0 Count |
| Viscosity | Moderate |
| Viscosity Level | Medium |
| Water Resistance Level | Waterproof |

## Product Details

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

## Images

![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/71CLIzj4gBL.jpg)
![Polyester Structural Repair Putty - Marine Grade Long Strand Fiber Fiberglass Reinforced Filler for Boat and Automotive Repair - Image 2](https://m.media-amazon.com/images/I/71GNCNcJWdL.jpg)
![Polyester Structural Repair Putty - Marine Grade Long Strand Fiber Fiberglass Reinforced Filler for Boat and Automotive Repair - Image 3](https://m.media-amazon.com/images/I/71UBbH1yU5L.jpg)
![Polyester Structural Repair Putty - Marine Grade Long Strand Fiber Fiberglass Reinforced Filler for Boat and Automotive Repair - Image 4](https://m.media-amazon.com/images/I/71slwOjBwPL.jpg)
![Polyester Structural Repair Putty - Marine Grade Long Strand Fiber Fiberglass Reinforced Filler for Boat and Automotive Repair - Image 5](https://m.media-amazon.com/images/I/81TAW8lZRsL.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

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

Great product!! A+

### ⭐⭐⭐⭐⭐ Repair putty
*by M***R on February 4, 2026*

Worked great for making a piece that was missing on the rear wheel well on a 1966 corvette

## 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 Sri Lanka*
*Store origin: LK*
*Last updated: 2026-02-10*