---
product_id: 537999030
title: "Black Spray, Seal Mastic Black Spray, Repair Cracks Roofs Window, Paint Sealant Roof Window Pipes Guttering, Superior Long Lasting Seals, Seal Fix Waterproof Mastic Sealant 400 ml (4 PCS)"
brand: "pnjb"
price: "¥10591"
currency: JPY
in_stock: true
reviews_count: 8
url: https://www.desertcart.jp/products/537999030-black-spray-seal-mastic-black-spray-repair-cracks-roofs-window
store_origin: JP
region: Japan
---

# Waterproof sealant 400 ml capacity Versatile application Black Spray, Seal Mastic Black Spray, Repair Cracks Roofs Window, Paint Sealant Roof Window Pipes Guttering, Superior Long Lasting Seals, Seal Fix Waterproof Mastic Sealant 400 ml (4 PCS)

**Brand:** pnjb
**Price:** ¥10591
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal the Deal on Leaks Instantly!

## Quick Answers

- **What is this?** Black Spray, Seal Mastic Black Spray, Repair Cracks Roofs Window, Paint Sealant Roof Window Pipes Guttering, Superior Long Lasting Seals, Seal Fix Waterproof Mastic Sealant 400 ml (4 PCS) by pnjb
- **How much does it cost?** ¥10591 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/537999030-black-spray-seal-mastic-black-spray-repair-cracks-roofs-window)

## Best For

- pnjb enthusiasts

## Why This Product

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

## Key Features

- • **Instant Leak Fix:** Seal leaks in seconds with our quick-drying formula.
- • **Multi-Surface Mastery:** Effective on roofs, windows, pipes, and more!
- • **Weather-Resistant Wonder:** Designed to withstand the elements for long-lasting protection.
- • **User-Friendly Application:** Simply spray, wait, and enjoy a leak-free space.
- • **Customer-Centric Assurance:** Shop confidently with our satisfaction guarantee!

## Overview

The PNJB Black Spray is a versatile, waterproof mastic sealant designed for quick and effective leak repairs on various surfaces, including roofs, windows, and pipes. With a 400 ml capacity and user-friendly application, this product ensures long-lasting seals while prioritizing customer satisfaction.

## Description

Black Spray, Seal Mastic Black Spray, Repair Cracks Roofs Window, Paint Sealant Roof Window Pipes Guttering, Superior Long Lasting Seals, Seal Fix Waterproof Mastic Sealant 400 ml (4 PCS)

## Features

- USES: It is used to fix leaks in a variety of locations, such as guttering, roofs, windows, pipes, and more. This type of product can be very useful for homeowners who want to fix small leaks quickly and easily without having to call in a professional.
- EFFECTIVE: It is designed to be effective on a variety of surfaces, including roof felt, slate tile, metals, plastics, and more. This versatility can make it a useful product for homeowners who need to fix leaks in different areas of their home or outdoor space.
- INSTANT: It is an instant leak-stop spray mastic sealant that can be used on pipes, gutters, roofs, and other surfaces. This type of sealant is designed to be waterproof and black in color, which can make it useful for a variety of applications.
- VERSATILE: Mastic Sealant is a simple and effective solution for sealing leaks on a variety of surfaces. To use it, you just need to clean the area that you want to seal, apply the spray, and wait for the sealant to dry.
- SHOP HASSLE FREE: Based on confidence in the quality, Customer satisfaction is our top priority. So, Shop without any worries if you face any issues or have any questions then please feel free to contact us and we will surely look after it.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | PNJB |
| Colour | 4 PCS |
| Style | Compact |
| Material | Rubber |

## Product Details

- **Material:** Rubber
- **Brand:** PNJB
- **Style:** Compact
- **Compatible material:** Plastic
- **Water resistance level:** Waterproof

## Images

![Black Spray, Seal Mastic Black Spray, Repair Cracks Roofs Window, Paint Sealant Roof Window Pipes Guttering, Superior Long Lasting Seals, Seal Fix Waterproof Mastic Sealant 400 ml (4 PCS) - Image 1](https://m.media-amazon.com/images/I/61SmaD89U8L.jpg)

## Available Options

This product comes in different **Colour Name** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Sealed the leak perfectly
  

*by M***2 on Reviewed in the United Kingdom on 25 October 2024*

First time using this product had a leak on my summerhouse roof ,this is perfect for quickness easy to use value for money and sticks highly recommend this product and it's great that you can use it in wet weather too.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Seals leaks on roof and operates in all, weathers
  

*by W***N on Reviewed in the United Kingdom on 6 November 2024*

Seals leaks and easy to work with

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Waterproof spray
  

*by J***. on Reviewed in the United Kingdom on 7 May 2024*

Bought 3 very good value sealed leak in roof

## Frequently Bought Together

- PNJB, Black Spray, Seal Mastic Black Spray, Repair Cracks Roofs Window, Paint Sealant Roof Window Pipes Guttering, Superior Long Lasting Seals, Seal Fix Waterproof Mastic Sealant 400 ml (4 PCS)
- Everbuild Everflex Roof and Gutter Sealant – Butyl-Based Sealant and Adhesive for Roofing – Excellent Weathering Properties – Black – 295 ml

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**Shop now:** [https://www.desertcart.jp/products/537999030-black-spray-seal-mastic-black-spray-repair-cracks-roofs-window](https://www.desertcart.jp/products/537999030-black-spray-seal-mastic-black-spray-repair-cracks-roofs-window)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-19*