The Inverted Flat Roof System is a roofing solution that places the insulation above the waterproofing membrane, rather than below it.
Suitable for a wide range of multi-functional finishes including paving, ballast, and green roof build-ups, the Inverted Flat Roof System is designed and fully specified by Polyroof's technical team and is backed by Polyroof's comprehensive range of guarantees.
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The Inverted Flat Roof System is suitable for a wide range of surface finishes including paving, ballast, and green/blue roof build-ups. The Polyroof Paving System provides a fully specified and designed paved finish option.
The Protec waterproofing membrane is fully cold applied, with no naked flame or hot works required during installation, reducing on-site risk and making it suitable for sensitive environments.
The entire system, from carrier layer and waterproofing through to insulation, Waterflow Reducing Layer, and surface finish, is specified and supplied by Polyroof's technical team.
The Inverted Flat Roof System is powered by Protec and is available with a range of multi-functional finish options, including the fully specified Polyroof Paving System. Each system is individually designed by Polyroof's technical team. For bespoke specification advice, please get in touch with our team.
Protec is a highly versatile, root-resistant, fast curing, fully reinforced cold liquid applied membrane system, forming the waterproofing layer of the Inverted Flat Roof System. Applied directly to the structural deck over a Polyroof Carrier Layer, Protec forms a seamless, fully adhered membrane that is then protected above by Polyroof Inverted-Therm insulation boards, the Polyroof Waterflow Reducing Layer, and a fully designed paving finish.
The following benefits are available, when the system is installed with Protec as the waterproofing layer:
Protec is BBA Certified for use on zero falls projects.
BBA Certified waterproofing system with an assessed service life of at least 30 years, backed by comprehensive manufacturer guarantees.
Cold-Applied Installation with Zero Risks from Hot Works: Fully cold-applied , no risks of accidental fire during installation.
RapidCure Technology: Extremely fast application with cure times as low as 30 minutes.
Membrane fully protected by insulation above, shielded from UV and thermal stress.
Seamless Waterproof Membrane: No joints, no welds and no weak points.
Year-Round Application: Includes summer inhibitors and winter accelerators.
The Polyroof Paving System provides a fully specified, designed, and guaranteed paved surface finish. Bespoke paving schemes are designed by Polyroof's technical team to suit the specific project requirements.
The Polyroof Waterflow Reducing Layer is installed above the insulation to manage water run-off through the insulation layer, forming an integral part of the correctly performing inverted roof build-up.
Polyroof Inverted-Therm flat insulation boards, positioned above the waterproofing membrane to protect it and achieve the required thermal performance.
Second layer of the cold, liquid-applied Protec waterproofing membrane, providing a fully reinforced, seamless finish.
First layer of the Protec waterproofing membrane applied in conjunction with PolyMat 450 glass fibre matting reinforcement.
The Polyroof SA Primer and Carrier Layer is applied to the structural deck, providing a suitable substrate for the cold liquid-applied Protec waterproofing membrane.
The new build structural deck substrate, compatible with timber, concrete, and metal decking.
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
