Refurbishment Overlay Systems

A highly versatile, fully reinforced cold liquid-applied waterproofing system designed for a wide range of roofing and waterproofing applications. Ideal for direct overlay on refurbishment projects, without the need to remove or strip the existing roof covering.

The Refurbishment Overlay System can be applied to a wide variety of existing flat roof build-ups, including felt, asphalt, single-ply, concrete, and GRP. The finished result achieves a seamless, fully adhered waterproof layer that can extend the lifespan of the roof structure.

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Why Specify This System?

Cold Applied – No Hot Works

Unlike many traditional roofing materials that require open flame hot works to install, the Refurbishment Overlay System is fully cold applied meaning there are no risks of accidental fire during installation

Substrate Compatibility

The Refurbishment Overlay System can be applied onto a variety of existing waterproof coatings, including, felt, single-ply, asphalt, PVC, concrete, and GRP.  

Seamless Application 

Applied as a liquid, the Refurbishment Overlay System forms a seamless waterproof membrane with no joints, no welds, and no weak points.  

RapidCure Technology 

Extremely fast application with cure times as low as 30 minutes.

All Year Application 

The System utilises catalyst, accelerators, and inhibitors allowing full control over cure times across a wide range of temperatures all year round. 

Industry Accreditation 

The Refurbishment Overlay System includes BBA certified waterproofing options (Certificate No, 09/4676) with an assessed service life of at least 30 years. The systems are further supported by ETA and UKTA assessments, CE and UKCA marking, along with Environmental Performance Declarations (EPD's).

System Options

The Refurbishment Overlay System is powered by two variants; Protec and Protec Evolve. Learn more about these products in more detail below. For bespoke specification advice, please get in touch with our team. 

Protec

Protec is a highly versatile, fast curing, fully reinforced cold liquid applied membrane system ideal for a wide range of roofing and waterproofing applications. The Protec RapidCure technology utilises catalyst, accelerators and inhibitors allowing full control over cure times across a wide range of temperatures all year round.

The seamless Protec membrane features the optimum combination of flexibility and toughness, making it ideal for roofs of all sizes including situations requiring regular foot traffic.

BBA Certified Waterproofing
ETA & UKTA Assessed Waterproofing
FM Approved Waterproofing Available
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CE & UKCA Marked
Waterproofing Product EPD
Rapid Curing
BBA Durability - 30 Years
Low Temperature Performance
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30 Year BBA Certified expected lifespan, bolstered by industry leading guarantees.

Cold Applied Installation with Zero Risks from Hot Works: Unlike many traditional roofing materials that require open flame hot works to install, Protec is fully cold applied.

Ideal for Overlays: Protec can be applied to existing flat roof membranes for a lasting refurbishment solution

Flexible and Tough Membrane: A unique flexible hybrid polymer waterproofing system with the optimum combination of flexibility and robustness.

RapidCure Technology: Extremely fast application with cure times as low as 30 minutes.

Year-Round Application: Includes summer inhibitors and winter accelerators to ensure ease of use in all seasons.

Seamless Waterproof Membrane: Applied as a liquid, Protec forms a seamless waterproof membrane with no joints, no welds and no weak points.

Specify with

Typical layers

1. Protec Top Coat

Second layer of the cold, liquid-applied Protec waterproofing membrane applied over the first coat, providing a fully reinforced finish.

First layer of the Protec waterproofing membrane applied in conjunction with PolyMat 450 glass fibre matting reinforcement.

Suitable Polyroof Primer, dependent on the substrate. Polyroof's technical team will advise on the most appropriate primer for the installation. Please get in touch for further information.

The existing substrate. Protec is compatible with a variety of existing waterproof coatings, including felt, single-ply, asphalt, and other liquid-applied membranes.

Protec Evolve

Protec Evolve is an ultra-low odour liquid-applied membrane, ideal for refurbishment applications within sensitive environments. The membrane is fast-curing, certified carbon neutral, highly versatile and able to form seamless adhesion to a range of surfaces (including bituminous substrates without primer) and is tough enough for heavy duty foot traffic with a range of anti-slip solutions.

BBA Certified Waterproofing
ETA & UKTA Assessed Waterproofing
FM Approved Waterproofing Available
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CE & UKCA Marked
Waterproofing Product EPD
Low Odour Formulation
BBA Durability - 30 Years
Low Temperature Performance
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Ultra-Low Odour Formulation powered by PeMA technology: An advanced flexible hybrid polyester methacrylate formulation with exceptionally low odour during installation, making it ideal for sensitive applications.

Sustainability Focused: Full product EPDs and leading carbon offsetting programme as part of our award-winning Net Zero Strategy.

Superior Durability: Protec Evolve is BBA-certified with a certified lifespan of at least 30 years, bolstered by industry leading guarantees.

RapidCure Technology: Extremely fast application with cure times as low as 30 minutes.

Seamless Waterproof Membrane: Applied as a liquid, Protec Evolve forms a seamless waterproof membrane with no joints, no welds and no weak points.

Cold Applied Installation with Zero Risks from Hot Works: Fully cold applied - no risks of accidental fire during installation.

Ideal for Overlays: Protec Evolve can be applied to existing flat roof membranes for a lasting refurbishment solution.

Low Temperature Performance: Can be installed at temperatures as low as 2°C, ensuring minimal project delays.

Typical layers

1. Protec Evolve Top Coat

Top layer of Protec Evolve waterproofing.

First layer of Protec Evolve waterproofing, with Polymat 450 reinforcement embedded.

Suitable Polyroof Primer, dependent on the substrate. Polyroof's technical team will advise on the most appropriate primer.

The existing waterproofing layer. Protec Evolve is compatible with felt, single-ply, asphalt, and other liquid-applied membranes.

Some of Our Waterproof Coating Systems

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Support Across Every Stage of Your Project

From initial project enquiry right through to completion, Polyroof will be on-hand to support you at every stage of your project’s lifecycle.

Specification → Technical Guidance → Approved Contractors → Quality Assurance → Guarantee