Product Range

With nearly four decades in the industry, RVL Manufacturing has built a strong reputation for delivering dependable, high-quality products.

We focus on the manufacturing of waterproofing and damp proofing products for roofs, gutters, and a range of other applications.

Lastiflex

Long-Term Protection. Proven Performance.

LastiFlex is a high-performance, flexible, UV-stable acrylic emulsion blend designed to deliver long-lasting protection across a wide range of surfaces.

 

Formulated with antifungal and antibacterial additives, which helps prevent the growth of mould, mildew, and bacteria. This improves hygiene, protects surfaces from deterioration, and extends the lifespan of the treated area.

 

Key Benefits

 

  • Fully waterproof when cured

  • Suitable for permanent water immersion

  • Highly flexible – does not age harden

  • UV, weather and storm resistant

  • Heat reflective pale grey standard finish

  • Easy application for trade or competent DIY use

 

How It Works

 

LastiFlex is applied in conjunction with a selected non-woven reinforcing membrane to create a continuous, fully bonded waterproof barrier.

Once the saturated basecoat dries, a finishing topcoat is applied, forming a consistent thickness membrane (approximately 1.1mm) that adheres completely to:

  • Concrete

  • Masonry

  • Most metal surfaces

 

Product Application

 

The following general rules apply to all applications

 

  1. Thoroughly clean all surfaces that are to be treated.
  2. Apply primer where necessary i.e. all asbestos, rust and any surface that is not solid and dust free. The primer is solvent based and must be allowed to dry fully.
  3. Apply a thick coat of LastiFlex to the prepared surface and bed the fabric into it.
  4. Apply more LastiFlex to the membrane until it is fully and totally free of air I.e. remove bubbles and blisters. Allow to dry – depending on the weather one or more hours

  5. Apply a thick top coat making sure that any pin holes that may occur in the first base coat are filled

 

 

LastiPrime

The Foundation of a Reliable Waterproofing System

 

LastiPrime is a high-performance solvent based primer that is designed to bond to most base materials, including rusty steel, wood, fibre and cement. 

 

LastiPrime should be applied in a single generous coat and allowed to dry, before applying the LastiFlex Waterproofing system. 

 

Key Benefits

 

  • Rust control properties
  • Enhances adhesion to porous and non-porous substrates
  • Improves bonding of waterproofing membranes
  • Fast drying for efficient project turnaround
  • Reduces surface dusting and porosity
  • Suitable for interior and exterior applications

 

Assessment for LastiPrime

 

LastiPrime is designed to provide a better bond between the substraight and LastiFlex. If the surface is loose, soft or crumbly, apply primer e.g. material like cement or fibre cement tend to be porous, dry and sometimes soft and powdery. One and sometimes two coats of primer may well be necessary because the first coat will soak deep into this surface.

 

Without primer these surfaces may act very much like blotting paper, sucking the solvent out of the LastiFlex (or other paint) and reducing the effective bond. In cases where LastiFlex is going to be applied to a soft plywood laminate e.g. pine or similar timber, it may be necessary to apply two coats of primer to close and tighten up the entire surface.


Sheet metal that has over the years built up a coating of rust, needs only loose surface of oxide to be
removed. A thin coat of rust over sheet metal can be over coated with LastiPrime and this will be an ideal surface to accept the full LastiFlex system

 

 

Product Application

 

Easy to apply by brush, roller, or spray, LastiPrime is designed for trade professionals and competent applicators seeking reliable substrate preparation.

 

This product is flammable. Store in a cool, dry place.

Lastiflex Membrane

Product Overview

 

LastiFlex Membrane is a high-strength non-woven stitch bond fabric designed to reinforce the paint-applied waterproofing systems.

Used in conjunction with LastiFlex, it provides enhanced tensile strength, crack-bridging capability, and long-term flexibility within the waterproofing system.

The membrane is engineered to fully saturate with Lastiflex, forming a continuous, reinforced waterproof barrier.

 

Intended Use

 

  • Reinforcement of liquid-applied waterproofing systems
  • Roof waterproofing applications
  • Parapets and upstands
  • Flashings and joints
  • Areas subject to movement or minor cracking

 

Key Performance Characteristics

 

  • High tensile strength
  • Excellent flexibility
  • Enhances crack-bridging performance
  • Compatible with acrylic waterproofing systems
  • Promotes uniform membrane thickness
  • Improves system durability and longevity