Why Use Liquid Applied Waterproofing Membranes?

Why Use Liquid Applied Waterproofing Membranes?

Liquid Applied Waterproofing for Concrete, Metal, Timber & Flat Surfaces 

Liquid Applied Membranes have the unique properties of extreme flexibility combined with seamless and robust bonding – all ideal qualities for a long life waterproofing membrane.

Liquid Membranes have a high viscosity formulation designed for application on both vertical and horizontal substrates.

The preferred waterproofing product for the roof project below is a  Liquid Applied Membrane System combined with Thermo White Roof Coating.

Metal roof with Liquid Membrane.

Liquid Applied Waterproofing Membranes

Properties of Liquid Rubber Membranes

  • Seamless – so no joins or seams as areas of potential weakness.
  • Flexible – membrane contracts & expands with roof surface.
  • Conforms to Shape – around roof services, rails, stairs etc.
  • OH&S Compliant & Eco-Friendly – no heat, fumes or torches.
  • High Performance - Long Live & Robust Adherence.
  • Encapsulation – preserving whatever is underneath & protection from weathering.
  • Cost Effectiveness – liquid roofing provides a cost-effective method of making a new or existing roof waterproof.

Spray Applied Elastomeric Liquid Membrane

Rooftop & Balcony Waterproofing Methods

Liquid Coating Systems will bond to a great many substrates, allowing its use in many situations without having to remove and dispose of the existing surface.

  • This saves time and avoids the cost of removal and cost/environmental issues associated with disposal.
  • Remedial Waterproofing present many challenges and Liquid Membranes are suitable for many repair projects.
  • Liquid System makes it easy to seal and make water tight around all existing fixed structures and utilities.  

Video Case Study - Waterproof Repairs to Concrete Roof

Video below outlines waterproofing repairs to an industrial roof & plant deck area.

  • The severely deteriorated existing roof membrane was leaking into rooms below.
  • It was not a viable option to remove the original roof membrane so spray-apply liquid membrane was the ideal repair product.
  • The new waterproof membrane, Liquid Rubber,  was spray installed over the existing surface in a matter of days.

Roof Waterproof Coatings

Liquid Membranes offer a long term solution for exiting roofs & can often be applied directly over existing & damaged surfaces - saving time & money.

  • The rooftop project in images below had existing roof membrane that was severely damaged and causing extensive water damage to structures below.
  • Existing roofs often have difficult access so removal and replacement can be prohibitively expensive.
  • The existing leaking roof membrane was prepared and then over-sprayed with a Liquid Rubber Waterproofing System.
  • This spray applied waterproofing method provided a seamless, monolithic membrane that coated around all upturns, stairs and rooftop deck and plant equipment.

Case Study: Severe cracks on existing roof membrane

Roof with new membrane

Heat Reflective Roof Coatings

  • This roof repair project was completed with white Thermal Reflective Top Coat over the base coat of Liquid Rubber.
  • Heat Reflective Coatings provide a robust and flexible roof membrane that also reduces interior temperature up to approx 8 degrees.
  • As a cool roof coating, heat reflective products are an excellent top coat to spray over the base coat  membrane -  this 2-stage system provides a protective long life solution for roof leaks.

Thermo Top Coat is not just a roof paint but a waterproof membrane in its own right.

Liquid Applied Waterproofing Membranes with Heat Reflective Thermal Top Coat

Waterproof Repairs to Leaking Roofs

Very often when choosing to use Spray-Applied Waterproofing Membranes, there is no need to remove the existing roof surface.

Spray application is extremely fast  - saving costs and time involved with a complete roof replacement.

  • In fact with Roof Case Study above removing and replacing the damaged membrane was not an option.
  • The roof structure was part of a power station and consequently it was not feasible for the roof to be removed.
  • Added to this was the challenge of providing waterproof repairs in a timely manner.
  • So speed was an essential element for choosing rapid sray applied Liquid Membranes.
  • Added to this ware the challenges of bridging the transition between the new membrane and existing roof.
  • Spray application for the waterproofing membrane was the perfect solution.

We have looked at many different products and are really pleased to have developed a system that ticks all the boxes – LIQUID WATERPROOFING MEMBRANE combined with a HEAT REFLECTIVE TOP COAT.

Heat Reflective Waterproof Coating

Concrete, Metal & Flat Roof Repairs

Spray applied membranes are ideal repair solution for all types of roof surfaces. There is no need to go through the expense and inconvenience of roof removal & replacement –  we over spray over your existing deteriorated roof membrane.

  • One component system.
  • Safe to use.
  • Excellent water resistance.
  • Self cross linking polymer for durability.
  • Highly flexible (accommodates movement and minor cracking insubstrate).
  • UV stable – designed for long term outdoor exposure.
  • Includes strong algaecides to reduce algal and mould growth.
  • Water based for easy application and cleanup.
  • Suitable for application on horizontal or vertical surfaces. 
  • Suitable for interior or exterior use.
  • Bright white colour to reflect solar rays and reduce thermal heat transmission.
  • Permanently flexible, excellent resistance to embrittlement.
  • Excellent adhesion over a wide variety of substrates.
  • Can be painted over with any acrylic based paint.

Two stage liquid waterproofing system provides a robust and flexible waterproofing membrane together with solar reflective top coating.

Read more. Findlay-Evans Recent Projects