---
product_id: 74709018
title: "MasterSeal SL1 Self-Leveling Polyurethane Sealant Limestone 27.8 Oz 12/Case"
brand: "basf"
price: "£41.54"
currency: GBP
in_stock: true
reviews_count: 1
url: https://www.desertcart.co.uk/products/74709018-masterseal-sl1-self-leveling-polyurethane-sealant-limestone-27-8-oz
store_origin: GB
region: United Kingdom
---

# 100% waterproof seal 1.5 in max gap fill 300 PSI tensile strength MasterSeal SL1 Self-Leveling Polyurethane Sealant Limestone 27.8 Oz 12/Case

**Brand:** basf
**Price:** £41.54
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal it like a pro—durability meets sleek design!

## Quick Answers

- **What is this?** MasterSeal SL1 Self-Leveling Polyurethane Sealant Limestone 27.8 Oz 12/Case by basf
- **How much does it cost?** £41.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/74709018-masterseal-sl1-self-leveling-polyurethane-sealant-limestone-27-8-oz)

## Best For

- basf enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Polyurethane durability with 300 PSI tensile strength for long-term resilience under pressure.
- • **Waterproof Confidence:** Complete waterproof seal ideal for floors and decks, protecting your space from moisture damage.
- • **Subtle Limestone Elegance:** Neutral limestone gray color blends seamlessly with modern architectural aesthetics.
- • **Generous Volume, Bulk Value:** 27.8 oz tubes come in a convenient 12-pack—perfect for large projects or ongoing maintenance.
- • **Seamless Surface Perfection:** Self-leveling formula ensures ultra-smooth, professional-grade finishes every time.

## Overview

MasterSeal SL1 is a premium self-leveling polyurethane sealant in limestone gray, offering a 1.5-inch maximum gap fill and 300 PSI tensile strength. Waterproof and designed for floors and decks, it comes in 27.8 oz tubes sold in cases of 12, delivering professional-grade durability and a smooth finish for your sealing needs.

## Description

The Limestone color closely matches newly poured concrete for good appearance. SL1 joint sealant is a one-component, self-leveling, UV resistant, exterior grade, non-priming polyurethane sealant designed for horizontal expansion joints in concrete floors and decks.Fills expansion joints up to 1-1/2" in width. Use it where flexibility, abrasion and puncture resistance are required. It has 300 psi tensile and 800% Elongation.

## Features

- Size: 27.8 oz (825ml) tube
- Per Case: 12 tubes per case
- Color: Limestone Gray

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Limestone |
| Brand | BASF |
| Item Weight | 1.92 ounces |
| Liquid Volume | 27 Fluid Ounces |
| Item Form | Liquid |
| Maximum Gap Fill | 1.5 Inches |
| Surface Recommendation | Floor, Deck |
| Tensile Strength | 3E+2 PSI |
| Water Resistance Level | Waterproof |
| Number of Items | 12 |
| Manufacturer | BASF |
| UPC | 080492303605 |
| Unit Count | 12.00 Count |
| Material | Polyurethane |
| Part Number | SL1 |
| Is Discontinued By Manufacturer | No |
| Size | 27.8 oz |
| Item Package Quantity | 12 |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Color:** Limestone
- **Brand:** BASF
- **Item Weight:** 1.92 ounces
- **Liquid Volume:** 27 Fluid Ounces
- **Item Form:** Liquid

## Images

![MasterSeal SL1 Self-Leveling Polyurethane Sealant Limestone 27.8 Oz 12/Case - Image 1](https://m.media-amazon.com/images/I/51oCD7hUsML.jpg)
![MasterSeal SL1 Self-Leveling Polyurethane Sealant Limestone 27.8 Oz 12/Case - Image 2](https://m.media-amazon.com/images/I/51O-LkRLy+L.jpg)

## Customer Reviews

### ⭐⭐ too much waste and mess
*by A***R on December 11, 2017*

bought 2 cases product has air in the tubes and will not stop squirting out of the tube after opening, too much waste and mess.

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**Shop now:** [https://www.desertcart.co.uk/products/74709018-masterseal-sl1-self-leveling-polyurethane-sealant-limestone-27-8-oz](https://www.desertcart.co.uk/products/74709018-masterseal-sl1-self-leveling-polyurethane-sealant-limestone-27-8-oz)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-29*