High-performance and Fast curing sealant and waterproofing products in South Africa

The MasterSeal product family under the Master Builders Solutions brand in South Africa, is the world’s leading supplier of high performance hand and spray-applied waterproofing products and solutions for roof and water tank leakages, car park and traffic decks, bridges and stadiums, water management facilities and wastewater, pipes, belowground structures.

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How does MasterSeal work?

The MasterSeal portfolio of hand and spray applied waterproofing products are formulated to stop water leakages and moisture ingression in a variety of new and existing structures. Our versatile, market leading and innovative technologies are suitable for waterproofing all types of constructions including car parks, traffic decks, industrial sites, water management facilities for potablewater and wastewater, pipes and belowground structures.

What makes MasterSeal a unique solution for customers?

Local construction expertise coupled with over 100 years of product manufacturing knowledge have led to countless high profile construction and waterproofing successes worldwide. Our global network of experts provides owners, investors, specifiers and applicators with the technical solutions necessary to complete challenging projects.

In demanding applications such as those on parking decks, bridges and stadiums, where structures are constantly exposed to the elements and subject to abrasive conditions, our high performance waterproofing traffic membranes deliver outstanding durability and long life cycles.

The construction industry benefits from our detailed knowledge of the corrosive environment in wastewater facilities, coupled with over a century of concrete repair and protection knowledge. This positions Master Builders Solutions to be the leader in water management solutions worldwide. Our superior technologies are strenuously tested to ensure adherence to local standards and high performance under local environmental conditions.

Watertight one-stop solutions for all structures

Our tailored product combinations comprise the fastest and easiest to install technologies available. We create a complete system solution approach, resulting in the most cost-effective and time-efficient waterproofing solution for each individual project.

Polyurethane and hybrid polymer joint sealants for building facades and civil structures

MasterSeal (formerly known as Masterflex) polyurethane single component joint sealants in cartridges, or economic 600ml sausages, have been the mainstay of architectural and engineering joint sealing for the past 20 years combining proven performance and reliability.

Features and Benefits:

MasterSeal NP 472 and MasterSeal NP 474

Excellent adhesion on most surfaces without primer.
Excellent non-sag properties suitable for vertical and overhead joints.
Single component: easy to use.
Very good UV, weathering and ageing resistance, color stability, provide high durability and long service life.
Can be painted over with water based paints.
Very low residual tackiness means reduced dirt and dust pick-up.

Special benefits of MasterSeal NP 472

Lower modulus which reduces stresses on the adhesive bond line, therefore suitable for substrates with weak tensile strength and joints subject to rapid movement caused by sudden and/or constant temperature changes.

For low temperatures: retains flexibility and movement capability.

Special benefits of MasterSeal NP 474

Higher modulus and Shore A hardness gives improved abrasion resistance for use in horizontal traffic situations.
High pick and vandal resistance for use in prisons, schools and other public spaces.
Improved water resistance for use in water tanks, irrigation channels, etc.

Hybrid polymer systems: latest technology

The latest generation of single component, thixotropic, low modulus, hybrid polymer joint sealant with exceptional properties for movement and construction joints in high-rise buildings.

Features and benefits: MasterSeal HY 495

Exceptional adhesion, even to damp substrates without primer.
Exceptional UV, weathering and ageing resistance and color stability compared to polyurethane sealants.
Excellent tolerance to moisture: eliminates bubble formation experienced by other sealant types on damp substrates, or because of high atmospheric humidity during application (a problem experienced by polyurethane sealants).

MasterSeal Waterproofing Product Range Nigeria Lagos

Industrial and special situations

Require joint sealants to withstand challenging conditions such as heavy traffic, fire resistance, chemical spillage, fuel and solvent

attack. The MasterSeal range provides proven formulations for these environments.

Typical areas of use and main requirements

Factories and warehouses: abrasion and chemical resistance.
Food and beverage manufacturing and chemical plants: hygiene and chemical resistance.
Airports, taxiways and hangars: jet fuel resistance and certification.
Concrete and asphalt roads: high movement and low modulus.
Fuel station forecourts: fuel resistance

Product descriptions, features and benefits:

MasterSeal SL 189

Single component, self leveling silicone supplied in cartridges for simple, problem free installation.
Ultra low modulus and high movement capability for use on asphalt as well as concrete joints.
Very high fuel resistance for use on airport taxiways, hard standings and hangars.

MasterSeal 470

2 component, high grade polysulfide with >25 year track record in harsh environments and climates.
Non-sag gun, and pouring grade versions available for vertical and horizontal joints.
Very good chemical resistance e.g. wastewater facilities.

MasterSeal CR 460

Special, 2 component formulation with exceptional chemical resistance for use in food,beverage and pharmaceutical industries.
Color matched to 7 standard colors of Ucrete floor systems