---
product_id: 49495876
title: "W4 Mastic Sealing Strip for Caravans & Motorhomes White 32mm – Weatherproof Sealant for Overlap Joints, Awning Rails, Roof-Lights, Window Surrounds & External Trims, Durable & Easy to Apply"
brand: "w4"
price: "215 zł"
currency: PLN
in_stock: true
reviews_count: 8
category: "W4"
url: https://www.desertcart.pl/products/49495876-w4-mastic-sealing-strip-for-caravans-and-motorhomes-white-32mm
store_origin: PL
region: Poland
---

# 32mm width for secure sealing Weatherproof & UV resistant 5m length for versatile coverage W4 Mastic Sealing Strip for Caravans & Motorhomes White 32mm – Weatherproof Sealant for Overlap Joints, Awning Rails, Roof-Lights, Window Surrounds & External Trims, Durable & Easy to Apply

**Brand:** w4
**Price:** 215 zł
**Availability:** ✅ In Stock

## Summary

> 🚐 Seal Smart, Travel Confident: The Ultimate Weatherproof Shield for Your Home on Wheels

## Quick Answers

- **What is this?** W4 Mastic Sealing Strip for Caravans & Motorhomes White 32mm – Weatherproof Sealant for Overlap Joints, Awning Rails, Roof-Lights, Window Surrounds & External Trims, Durable & Easy to Apply by w4
- **How much does it cost?** 215 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/49495876-w4-mastic-sealing-strip-for-caravans-and-motorhomes-white-32mm)

## Best For

- w4 enthusiasts

## Why This Product

- Trusted w4 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **All-Weather Armor:** Engineered to withstand rain, UV rays, and temperature swings for year-round protection.
- • **Trusted by Thousands:** 4.6-star rated with over 1,500 reviews—join the savvy caravan owners who never compromise on sealing.
- • **Multi-Surface Mastery:** Bonds seamlessly to metal, plastic, glass, and rubber—perfect for every caravan and motorhome trim.
- • **DIY-Friendly Application:** Cut-to-size convenience with easy peel-and-stick adhesion means no pro needed—upgrade your rig today.
- • **Precision Fit & Flexibility:** 32mm wide strip conforms effortlessly to curves and corners, ensuring no gap is left behind.

## Overview

The W4 Mastic Sealing Strip is a durable, 5-meter long, 32mm wide butyl strip designed for weatherproof sealing of caravans and motorhomes. It offers exceptional adhesion across multiple surfaces including metal and plastic, resists harsh weather and UV exposure, and is easy to apply without professional help. Highly rated by users, it ensures a reliable, long-lasting seal for overlap joints, awning rails, roof-lights, and external trims.

## Description

W4 Mastic Sealing Strip for Caravans & Motorhomes White 32mm – Weatherproof Sealant for Overlap Joints, Awning Rails, Roof-Lights, Window Surrounds & External Trims, Durable & Easy to Apply : desertcart.co.uk: DIY & Tools

Review: Strong and Reliable - I recently purchased the W4 High Performance Mastic Sealing Strip, and I must say it has proven to be an excellent product. This short review aims to highlight the strength and reliability of this sealing strip based on my experience. The W4 High Performance Mastic Sealing Strip offers exceptional strength when it comes to sealing various surfaces. Whether I'm working on my caravan, motorhome, or any other application that requires a reliable seal, this product delivers outstanding performance. One of the standout features of this sealing strip is its remarkable adhesive strength. It securely bonds to different materials, including metal, plastic, glass, and rubber, ensuring a tight and long-lasting seal. The strip creates a barrier against water, dust, and other contaminants, providing added protection and durability. The sealing strip's high-performance mastic material is resistant to harsh weather conditions, UV rays, and temperature fluctuations. This resilience allows it to maintain its strength and effectiveness over time, making it suitable for both indoor and outdoor applications. It provides peace of mind, knowing that the seal remains intact even in challenging environments. Furthermore, the W4 High Performance Mastic Sealing Strip is easy to use. It can be cut to the desired length and applied directly to the intended area. The strip conforms well to irregular surfaces, ensuring a complete and secure seal. Its flexibility allows for easy installation around corners and curves without compromising its strength. The versatility of this sealing strip is worth mentioning as well. It can be used in various applications, including sealing joints, filling gaps, and preventing leaks. Whether it's for automotive purposes, household repairs, or DIY projects, the W4 High Performance Mastic Sealing Strip proves to be a reliable and multipurpose solution. In conclusion, the W4 High Performance Mastic Sealing Strip is a must-have for anyone in need of a strong and reliable seal. Its impressive adhesive strength, durability, and versatility make it a valuable addition to any toolkit or repair supplies. If you're looking for a sealing strip that offers exceptional strength and reliability, look no further. The W4 High Performance Mastic Sealing Strip will exceed your expectations and provide a long-lasting seal in various applications.
Review: Works well - Brilliant product, used for levelling electric fan on my campervan roof, not a leak in sight

## Features

- Versatile Sealing Solution: Ideal for sealing and re-bedding a wide range of caravan and motorhome fittings, including overlap joints, awning rails, roof-lights, vents, and window surrounds.
- Multi-Surface Compatibility: Perfect for use on aluminium mouldings, exterior lights, grab handles, and most external trims, ensuring a secure and long-lasting seal.
- Durable & Weather-Resistant: Formulated to withstand outdoor conditions, this mastic sealing strip provides a reliable, weatherproof seal to protect against leaks and damage.
- Easy to Apply: Convenient and simple to use, this sealing strip makes it easy to maintain and upgrade your caravan or motorhome fittings without the need for professional assistance.
- High-Quality Performance: Trusted by caravan and motorhome owners, the W4 Mastic Sealing Strip delivers strong adhesion and lasting protection for all your external trims and fittings.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00J0X6M6O |
| Best Sellers Rank | 22,851 in DIY & Tools ( See Top 100 in DIY & Tools ) 395 in Sealers |
| Brand | W4 |
| Colour | White |
| Customer Reviews | 4.6 out of 5 stars 1,597 Reviews |
| Included Components | Sealing Strip 5m |
| Item Dimensions L x W | 14L x 16W centimetres |
| Item Type Name | W4 W4 Standard Mastic Sealing Strip - 5m x 32mm - White, |
| Item height | 6.38 centimetres |
| Manufacturer | W4 |
| Material | Butyl |
| Number of items | 1 |
| Product dimensions | 14L x 16W centimetres |
| Recommended Uses For Product | Sealing and weatherproofing caravan and motorhome fittings (overlap joints, awning rails, roof-lights, vents, window surrounds) |
| Recommended uses for product | Sealing and weatherproofing caravan and motorhome fittings (overlap joints, awning rails, roof-lights, vents, window surrounds) Recommended uses for product Sealing and weatherproofing caravan and motorhome fittings (overlap joints, awning rails, roof-lights, vents, window surrounds) See more |
| Unit Count | 5.0 metre(s) |

## Product Details

- **Brand:** W4
- **Colour:** White
- **Material:** Butyl
- **Product dimensions:** 14L x 16W centimetres

## Images

![W4 Mastic Sealing Strip for Caravans & Motorhomes White 32mm – Weatherproof Sealant for Overlap Joints, Awning Rails, Roof-Lights, Window Surrounds & External Trims, Durable & Easy to Apply - Image 1](https://m.media-amazon.com/images/I/61MwtxR64YL.jpg)
![W4 Mastic Sealing Strip for Caravans & Motorhomes White 32mm – Weatherproof Sealant for Overlap Joints, Awning Rails, Roof-Lights, Window Surrounds & External Trims, Durable & Easy to Apply - Image 2](https://m.media-amazon.com/images/I/61gz09uhHPL.jpg)
![W4 Mastic Sealing Strip for Caravans & Motorhomes White 32mm – Weatherproof Sealant for Overlap Joints, Awning Rails, Roof-Lights, Window Surrounds & External Trims, Durable & Easy to Apply - Image 3](https://m.media-amazon.com/images/I/61tWdrVZuZL.jpg)
![W4 Mastic Sealing Strip for Caravans & Motorhomes White 32mm – Weatherproof Sealant for Overlap Joints, Awning Rails, Roof-Lights, Window Surrounds & External Trims, Durable & Easy to Apply - Image 4](https://m.media-amazon.com/images/I/717JUHHoP7L.jpg)
![W4 Mastic Sealing Strip for Caravans & Motorhomes White 32mm – Weatherproof Sealant for Overlap Joints, Awning Rails, Roof-Lights, Window Surrounds & External Trims, Durable & Easy to Apply - Image 5](https://m.media-amazon.com/images/I/71ahG1hSdYL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Strong and Reliable
*by K***S on 23 June 2023*

I recently purchased the W4 High Performance Mastic Sealing Strip, and I must say it has proven to be an excellent product. This short review aims to highlight the strength and reliability of this sealing strip based on my experience. The W4 High Performance Mastic Sealing Strip offers exceptional strength when it comes to sealing various surfaces. Whether I'm working on my caravan, motorhome, or any other application that requires a reliable seal, this product delivers outstanding performance. One of the standout features of this sealing strip is its remarkable adhesive strength. It securely bonds to different materials, including metal, plastic, glass, and rubber, ensuring a tight and long-lasting seal. The strip creates a barrier against water, dust, and other contaminants, providing added protection and durability. The sealing strip's high-performance mastic material is resistant to harsh weather conditions, UV rays, and temperature fluctuations. This resilience allows it to maintain its strength and effectiveness over time, making it suitable for both indoor and outdoor applications. It provides peace of mind, knowing that the seal remains intact even in challenging environments. Furthermore, the W4 High Performance Mastic Sealing Strip is easy to use. It can be cut to the desired length and applied directly to the intended area. The strip conforms well to irregular surfaces, ensuring a complete and secure seal. Its flexibility allows for easy installation around corners and curves without compromising its strength. The versatility of this sealing strip is worth mentioning as well. It can be used in various applications, including sealing joints, filling gaps, and preventing leaks. Whether it's for automotive purposes, household repairs, or DIY projects, the W4 High Performance Mastic Sealing Strip proves to be a reliable and multipurpose solution. In conclusion, the W4 High Performance Mastic Sealing Strip is a must-have for anyone in need of a strong and reliable seal. Its impressive adhesive strength, durability, and versatility make it a valuable addition to any toolkit or repair supplies. If you're looking for a sealing strip that offers exceptional strength and reliability, look no further. The W4 High Performance Mastic Sealing Strip will exceed your expectations and provide a long-lasting seal in various applications.

### ⭐⭐⭐⭐⭐ Works well
*by F***1 on 23 October 2025*

Brilliant product, used for levelling electric fan on my campervan roof, not a leak in sight

### ⭐⭐⭐⭐ Good all rounder
*by J***S on 15 May 2023*

Protecting paper peels off nicely. Adds too easy handling. Can get messy if this is not the case. Good all round tape. Cannot comment on adhesive quality as i HAVE ONLY JUST PUT IT ON, Looking as if it will last though.

## Frequently Bought Together

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-23*