---
product_id: 494394130
title: "Stop Leak Sealer Spray | CLEAR | 400ml | Leak Sealer for Gutters and Flat Roofs | Waterproof Gutter Sealant | Fills, Seals & Stops Leaks | Long Lasting Waterproof Sealant"
brand: "jenolite"
price: "$70"
currency: NZD
in_stock: true
reviews_count: 13
category: "Jenolite"
url: https://www.desertcart.nz/products/494394130-stop-leak-sealer-spray-clear-400ml-leak-sealer-for-gutters
store_origin: NZ
region: New Zealand
---

# fast, easy spray-on application 400ml advanced waterproof spray weather-resistant & UV-proof Stop Leak Sealer Spray | CLEAR | 400ml | Leak Sealer for Gutters and Flat Roofs | Waterproof Gutter Sealant | Fills, Seals & Stops Leaks | Long Lasting Waterproof Sealant

**Brand:** jenolite
**Price:** $70
**Availability:** ✅ In Stock

## Summary

> 💦 Seal it, forget it — leak-proof your life with Jenolite!

## Quick Answers

- **What is this?** Stop Leak Sealer Spray | CLEAR | 400ml | Leak Sealer for Gutters and Flat Roofs | Waterproof Gutter Sealant | Fills, Seals & Stops Leaks | Long Lasting Waterproof Sealant by jenolite
- **How much does it cost?** $70 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/494394130-stop-leak-sealer-spray-clear-400ml-leak-sealer-for-gutters)

## Best For

- jenolite enthusiasts

## Why This Product

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

## Key Features

- • **All-Weather Warrior:** UV and temperature resistant for year-round protection
- • **Instant Leak Defense:** Stops leaks fast with a clear, durable seal
- • **Multi-Surface Mastery:** Works seamlessly on metal, plastic, tile, concrete & more
- • **Effortless Application:** Spray, layer, and seal — no tools or mess required
- • **Trusted British Innovation:** Decades of expertise packed in a sleek 400ml can

## Overview

JENOLITE Stop Leak Sealer Spray is a 400ml clear waterproof aerosol designed for quick, reliable sealing of small leaks on gutters, flat roofs, and multiple surfaces. Engineered to resist extreme weather and UV exposure, it offers a long-lasting, flexible seal that’s easy to apply and trusted by professionals. Made in Britain, this spray is perfect for fast fixes and durable protection, ensuring your property stays leak-free year-round.

## Description

JENOLITE Stop Leak Sealer Spray | CLEAR | 400ml | Leak Sealer for Gutters and Flat Roofs | Waterproof Gutter Sealant | Fills, Seals & Stops Leaks | Long Lasting Waterproof Sealant : desertcart.co.uk: Business, Industry & Science

Review: Stopped the leak - Fast delivery and simple to use product. Stopped leak immediately.
Review: Good for small jobs - This product is only ever going to seal the smallest of leaks or cracks, being in liquid form as it comes out of the can, drying to a plasticky finish. But in these cases it seems to be quite effective, if layered as suggested. You need to spray thinly, leave for 15 minutes and then do several times more to build an effective covering. If you're using inside I'd advice the use of a face mask. It has a strong aroma and being an aerosol does fill the air, which is not only bad for the lungs but has a strong pear drop aroma. But overall, if your gap fills the criteria it works well, though I have no idea how long it will last.

## Features

- Causes serious eye damage.
- Causes skin irritation.
- Extremely flammable aerosol.
- May cause drowsiness or dizziness.
- Pressurised container: May burst if heated.
- Repeated exposure may cause skin dryness or cracking.
- ULTIMATE WATERPROOF SEALANT: Stop Leak Sealer Spray provides advanced, long-lasting leak protection for gutters, flat roofs, and more. Jenolite's waterproofing sealant can be trusted to act as an instant leak sealer. Perfect for fast-fix repairs and protection for guttering, flat roofs, shed roofs, drain pipes, caravans and more.
- VERSATILE USAGE: Formulated for multi-surface application, Jenolite Stop Leak Sealer Spray can be used on a wide range of surfaces, including plastic, tile, metal, UPVC, Concrete, roofing felt and more. Ideal for use as a leaking gutter seal, the waterproof sealant spray is also perfect for fixing leaks in felt roofs, conservatories, sheds, etc.
- WEATHER-RESISTANT DURABILITY: The waterproofing spray is designed to withstand extreme weather conditions UV rays and extreme temperatures, this premium leak sealer maintains its strength and flexibility over time, keeping your gutters and roofs leak-free year-round.
- QUICK & EASY APPLICATION: Simple to apply, the waterproofing spray offers a fast solution to dealing with small cracks and leaks, just aim and spray, building up several layers for maximum effect. (It is not recommended for bird baths, ponds, central heating systems or pressurised plumbing systems)
- MADE IN BRITAIN: Pioneers in surface treatment and protection ,JENOLITE’s Stop Leak Sealer Spray combines cutting-edge innovation with decades of expertise to deliver a product you can rely on for lasting, professional-grade results. Available in CLEAR | BLACK | WHITE

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BMG9RGGN |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 731 in DIY & Tools ( See Top 100 in DIY & Tools ) 17 in Sealers |
| Colour | Clear, White, Black |
| Customer Reviews | 4.0 4.0 out of 5 stars (7,110) |
| Date First Available | 15 Nov. 2022 |
| Included components | Aerosol |
| Item Package Quantity | 1 |
| Item Weight | 380 g |
| Item model number | 89458 |
| Manufacturer | JENOLITE |
| Material | Plastic |
| Part number | 89458 |
| Product Dimensions | 6.5 x 6.5 x 20 cm; 380 g |
| Style | CLEAR (1x400ml) |

## Product Details

- **Brand:** JENOLITE
- **Item dimensions L x W x H:** 6.5 x 6.5 x 20 centimetres
- **Item weight:** 0.38 Kilograms
- **Material:** Plastic
- **Style:** CLEAR (1x400ml)

## Images

![Stop Leak Sealer Spray | CLEAR | 400ml | Leak Sealer for Gutters and Flat Roofs | Waterproof Gutter Sealant | Fills, Seals & Stops Leaks | Long Lasting Waterproof Sealant - Image 1](https://m.media-amazon.com/images/I/61WlS-1Y11L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Stopped the leak
*by A***S on 17 October 2025*

Fast delivery and simple to use product. Stopped leak immediately.

### ⭐⭐⭐⭐ Good for small jobs
*by T***Y on 28 November 2025*

This product is only ever going to seal the smallest of leaks or cracks, being in liquid form as it comes out of the can, drying to a plasticky finish. But in these cases it seems to be quite effective, if layered as suggested. You need to spray thinly, leave for 15 minutes and then do several times more to build an effective covering. If you're using inside I'd advice the use of a face mask. It has a strong aroma and being an aerosol does fill the air, which is not only bad for the lungs but has a strong pear drop aroma. But overall, if your gap fills the criteria it works well, though I have no idea how long it will last.

### ⭐⭐⭐⭐⭐ Really works
*by D***D on 27 September 2025*

This stuff really does do what it says on the can. Like anything from this manufacturer, it’s high quality, dries fairly fast if applied in small quantities. Provided the area is cleaned reasonably well it seals without that awful stickiness of mastic. One tin will seal multiple small leaks. A note of caution, this is a temporary fix and would not be strong enough for any pressurised system for any extended period of time, if at all. Its function is mostly to stop that annoying dripping gutter, or a small crack in a flat roof. It will stop a leaking pipe at a poorly fitted union provided the thread isn’t too badly cracked and the leak isn’t huge or the pressure isn’t too high. It’s superb for its primary function and I’d recommend keeping a tin in the garage.

## Frequently Bought Together

- JENOLITE Stop Leak Sealer Spray | CLEAR | 400ml | Leak Sealer for Gutters and Flat Roofs | Waterproof Gutter Sealant | Fills, Seals & Stops Leaks | Long Lasting Waterproof Sealant
- JENOLITE Epoxy Putty Repair Stick | UNDERWATER | 112g (7 Inches) | Apply Underwater | Ideal For Hot Tubs, Spas, Swimming Pools, Boats & More | Excellent as Plumbers Putty & Pipe Repair Epoxy Filler

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-09*