Leaders in
The scale & extent of our operations allows us to install our waterproofing range on any sized project, in a cost effective, quick manner, with limited interuptions
Waterproofing & Installation
Leaders In
Flat roofs are notorious for leaking, as they are less able to get rid of water when compared to pitched roofs
Flat Roof Waterproofing
Leaders in
Inverted Roof Waterproofing
Our professionally tested process for installing on inverted roofs ensures the Muti-Dex System is as effective as possible for your home
Your Best Local Roofing Insulators
Leaders in Flat Roof Waterproofing & Insulation
Multi-Dex is one of South Africa’s most trusted insulation waterproofing companies, specialising in:
- Concrete Slabs – A waterproof membrane is fitted over the concrete surface to seal it.
- Flat Roof – Flat roofs tend to be be prone to leaks and such need to be waterproofed and well-mantained.
- Low-pitched Metal Roof Waterproofing Applicators – Our strict, methodical installation process for flat metal roofs ensures the Multi-Dex system is as effective as possible for your home.
The scale and extent of our operations allows us to install our waterproofing range on any sized project, (from a residential home to an airport hangar) in a cost-effective, quick manner, with limited interruptions..
- 71 Voortrekker Avenue Edenvale 1610 Johannesburg
Your Flat Roof Waterproofing Services Provider
Why Waterproofing is Important?
Waterproofing protects your building’s structure from water damage caused by seasonal rain, moisture, and leaks. In fact, flooding, water damage, and mould are among the leading causes of property damage—often causing more harm than fire.
Therefore it is a good idea to waterproof your home, office, shop or factory in order to avoid structural and aesthetic damage to the building.
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Our Services
Concrete Roof Waterproofing
Concrete roofs are usually flat and have a notorious reputation for leaking. The fact is that these roofs will leak if not waterproofed effectively, early on in construction. This also allows for internal finishes to be undertaken.
Inverted Roofs for Concrete Slabs Waterproofing
The National Building Regulations and Building Standards Act requires all roofs to be constructed safely and in such a way that they cannot be damaged by wind or water.
Low Pitched Roof Waterproofing
A roof that is nearly level or slightly pitched is called a low slope or low pitched roof. No roof should be dead level flat; it must have at least a slight slope to drain.
Inverted Roofs Waterproofing
Our professionally tested process for installing on inverted roofs ensures the Multi-dex system is as effective as possible for your home.
01.
Concrete Roof Waterproofing
Concrete roofs are usually flat and have a notorious reputation for leaking. The fact is that these roofs will leak if not waterproofed effectively, early on in construction. This also allows for internal finishes to be undertaken.
02.
Flat Metal Roof Waterproofing
The National Building Regulations and Building Standards Act requires all roofs to be constructed safely and in such a way that they cannot be damaged by wind or water.
03.
Low Pitched Roof Waterproofing
A roof that is nearly level or slightly pitched is called a low slope or low pitched roof. No roof should be dead level flat; it must have at least a slight slope to drain.
04.
Inverted Roofs Waterproofing
Our professionally tested process for installing on inverted roofs ensures the Multi-dex system is as effective as possible for your home.
Why Choose Multi-Dex
Waterproofing protects your building’s structure from water damage caused by seasonal rain, moisture, and leaks. In fact, flooding, water damage, and mould are among the leading causes of property damage—often causing more harm than fire.
Therefore it is a good idea to waterproof your home, office, shop or factory in order to avoid structural and aesthetic damage to the building.
Waterproofing your building is a good preventative risk measure in order to avoid damage to property, valuables and health risks to people and it should be one of the first improvements a homeowner considers.
Qualified Experts
Over 10 million square meters completed and over 100 years of combined experience with our staff. Since inception in 1994
Workmanship Quality
Up to 15 year workmanship guarantee. All supplier guarantees included as well.
Quality Professionals
BEE Compliant. Out the box applications to ensure your peace of mind. Professionally qualified staff with an effective management team and an understanding and commitment to the finer details of waterproofing applications
Our Process
01
Planning
02
Design
03
Application
04
Finishing
Here’s What Our Client Say about Us
“The new low pitched roof waterproofing you installed over our babies’ nursery has bought peace of mind to all of us here at TLC. Not having to worry about a leaky roof every time we have rain is such a great relief! Thank you Multi-Dex!”
Pippa Jarvis
MD, The Love of Christ Children’s Home
Accreditation
Multi-Dex is passionate about its business. We are proud to be members of a number of industry related boards and associations that hold service excellence and product quality as their mandates.

Professional Waterproofing Association
Established in 2009, to promote, support, protect and to pursue the common interest of clients. As well as specifying, authorities for waterproofing materials and methods.

Master Builders Association North
Master Builders Association North is a Federation of registered employers’ organisations which represent contractors and employers operating in the building and construction sectors. The Association is regulated in terms of Section 107 of the Labour Relations Act, Act 66 of 1995..

Waterproofing Association of Gauteng
The Waterproofing Association of Gauteng (WAG) is dedicated to the promotion, support and protection of the common interest of Specifying Authorities, Clients, Contractors and Manufacturers to ensure professionalism, integrity as well as reliability within the Waterproofing Industry.

















