---
product_id: 59457753
title: "Thompson's 10 Year Roof Seal Grey 2.5L | Protective barrier formulation designed for exterior repair areas exposed to rainfall and standing water."
brand: "ronseal"
price: "R3349"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Ronseal"
url: https://www.desertcart.co.za/products/59457753-thompsons-10-year-roof-seal-grey-2-5l-protective-barrier
store_origin: ZA
region: South Africa
---

# Weatherproof Seal Flexible Membrane 10-Year Durability Thompson's 10 Year Roof Seal Grey 2.5L | Protective barrier formulation designed for exterior repair areas exposed to rainfall and standing water.

**Brand:** ronseal
**Price:** R3349
**Availability:** ✅ In Stock

## Summary

> 🏠 Seal the Deal with Thompson's!

## Quick Answers

- **What is this?** Thompson's 10 Year Roof Seal Grey 2.5L | Protective barrier formulation designed for exterior repair areas exposed to rainfall and standing water. by ronseal
- **How much does it cost?** R3349 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/59457753-thompsons-10-year-roof-seal-grey-2-5l-protective-barrier)

## Best For

- ronseal enthusiasts

## Why This Product

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

## Key Features

- • **Dynamic Flexibility:** Designed to move with your roof, ensuring a perfect fit.
- • **Unmatched Longevity:** Experience a decade of protection against the elements.
- • **Seamless Application:** Easily apply to dry surfaces for optimal results.
- • **Versatile Compatibility:** Works on a variety of roofing materials for all your needs.
- • **Hand-Powered Convenience:** No batteries required—just you and the power of protection.

## Overview

Thompson's 10 Year Roof Seal in Grey (2.5L) is engineered for superior weatherproofing, forming a durable and flexible membrane that adapts to your roof's natural movements. Ideal for various roofing materials, this hand-powered solution promises a decade of reliable protection.

## Description

Thompson's 10 Year Roof Seal is a high-performance coating which cures to form a durable, flexible membrane suitable for resealing, and protecting whole roofs or repairing large areas of damage to a variety of roofing materials. The 10 year formulation is designed to flex with the natural movement of the roof protecting the membrane from cracking and splitting over time. UV light stable iron oxide pigments provide a protective shield against harmful UV radiation ensuring 10 year weatherproofing performance under extreme conditions. For best results the advanced formula should be applied directly to dry surfaces, the 10 year formulation forms a vapour permeable membrane which repairs and weatherproofs while allowing any trapped moisture in the substrate to escape. This product is supplied in a tin with resealable lid and the following specifications: Colour: Black. Available Sizes: 1L, 2.5L or 4L. Thompson's 10 Year Roof Seal is a high-performance coating which cures to form a durable, flexible membrane suitable for resealing, and protecting whole roofs or repairing large areas of damage to a variety of roofing materials. The 10 year formulation is designed to flex with the natural movement of the roof protecting the membrane from cracking and splitting over time. UV light stable iron oxide pigments provide a protective shield against harmful UV radiation ensuring 10 year weatherproofing performance under extreme conditions. For best results the advanced formula should be applied directly to dry surfaces, the 10 year formulation forms a vapour permeable membrane which repairs and weatherproofs while allowing any trapped moisture in the substrate to escape. This product is supplied in a tin with resealable lid and the following specifications: Colour: Grey. Available Sizes: 2.5L.

Review: Great quality product for flat roof - Having used several different brands over the years on my flat rooves this one is the best with no sign of flaking as others have done
Review: Amazing stuff - I got this after a friend recommended and it went over my felt roof easily and with British weather, a day later was put to the test and it blocked any leaks I had. So glad I got it

## Features

- Used to repair a variety of roofing materials
- 10 year weatherproofing performance
- For best results, apply directly to dry surfaces
- Cures to form a durable, waterproof, flexible membrane
- Designed to flex with the natural movement of the roof

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Thompson's |
| Part Number | 30145 |
| Product Dimensions | 16 x 16 x 16 cm; 3.9 kg |
| Item model number | 30145 |
| Colour | Grey |
| Power Source | hand_powered |
| Item Package Quantity | 1 |
| Included Components | 0Yr Roof Seal Grey 2.5Lt |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 3.9 kg |

## Images

![Thompson's 10 Year Roof Seal Grey 2.5L | Protective barrier formulation designed for exterior repair areas exposed to rainfall and standing water. - Image 1](https://m.media-amazon.com/images/I/51qgwRMxZML.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great quality product for flat roof
*by J***B on 23 July 2026*

Having used several different brands over the years on my flat rooves this one is the best with no sign of flaking as others have done

### ⭐⭐⭐⭐⭐ Amazing stuff
*by K***S on 9 October 2024*

I got this after a friend recommended and it went over my felt roof easily and with British weather, a day later was put to the test and it blocked any leaks I had. So glad I got it

### ⭐⭐⭐⭐ Quality roof seal at a very good price.
*by B***E on 28 March 2022*

Easy application. Covers very well and forms a waterproof barrier. Brushes easy to clean with water. Very pleased with product.

## Frequently Bought Together

- Thompson's 10 Year Roof Seal Grey 2.5L
- Faithfull Tar Brush Short Handle FAIBRTARSH
- fowong Waterproof Tape, 100mm (W) x 5M (L) Butyl Tape, Waterproof Tape for Leaks, Waterproof Sealing Tape for Outdoor Use, Flashing Tape for Roof Sealant, Window,Glass, Boat and Pipe Sealing

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**Shop now:** [https://www.desertcart.co.za/products/59457753-thompsons-10-year-roof-seal-grey-2-5l-protective-barrier](https://www.desertcart.co.za/products/59457753-thompsons-10-year-roof-seal-grey-2-5l-protective-barrier)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-08-31*