EVERGUARD® TPO 

An advanced synthetic low-slope roofing membrane from the largest roofing manufacturer in North America – GAF

Everguard TPO is a single-ply roofing membrane that offers excellent performance, at a very cost-effective price. Heat-welded seams providing for superior strength. TPO’s fibre reinforced – long-term heat, UV, and natural fungal resistance, plus flexibility without need of plasticizers, all contribute to making TPO the most reliable low-slope roofing system ever.

UV Resistance

2.5x the industry standard

Welded Seams

Provide greater seam strength

175-209KPH Rating

For Extra high wind zones

Great Value

Performance at a cost-effective price.

Up to 30yr Warranty

With Everguard Extreme TPO 

Puncture Resistant

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Everguard TPO has extraordinarily high performance values, that allow for use on low-slope, flat roof and pitch roof applications.  Being a flexible membrane, Everguard can be applied to complex roof shapes, that include custom designed valley and gutter intersections. Everguard – the ideal membrane for complex applications on both designer residential roofs, decking and larger commercial factory applications.

Engineered for a long service life, with easy repair and excellent flexibility, Everguard TPO can bespoke the most difficult of design situations, while continuing to perform for many years in the most challenging of conditions.

The Everguard TPO membrane system, comes with a large inventory of supporting install accessories; featuring trafficable walkway treads for roof service and access, a full range of corner and roof penetration flashings / junctions and supported by GAF’s own colour-matched TPO bonded sheet aluminum; essential for creating custom metal flashings, such that Everguard can be easily heat welded, surface to surface – creating that near perfect, near seamless finish that is easy on the eye.

Modern residential buildings, often have decking applications that require a waterproofing membrane; with Everguard now becoming the popular go-to choice.  Not only because of its ease and speed of application, but also for its simplicity of weld-repair if needed, coupled with a very efficient draining surface, such that Everguard systems remain clean and free of fungal debris year round; a practicality that is advantageous over granular systems, whereby the decking membrane is overlaid with a trafficable surface, such as found with timber or ceramic tiles, mounted over supplementary under-jacks.

Virtually every type of roofing system in New Zealand, including not only expansive commercial applications, but also smaller residential installs, have gutter discharge requirements.  Herein, Everguard provides for superior internal and external needs.

Generally, the most common requirement for a commercial gutter system, is for factory roofing requiring a long-life internal gutter membrane; ie rain water collection and or diversion.  Everguard Extreme TPO lends itself well to this requirement, not only for its smooth free flowing and natural fungal resistant surface, but also for its long service life.  Everguard Extreme comes with a pro-rated warranty offering up to 30-years performance, reducing the need to replace the gutter lining, well before having to replace the main roof.

Everguard TPO has extraordinarily high performance values, that allow for use on low-slope, flat roof and pitch roof applications.  Being a flexible membrane, Everguard can be applied to complex roof shapes, that include custom designed valley and gutter intersections. Everguard – the ideal membrane for complex applications on both designer residential roofs, decking and larger commercial factory applications.

Engineered for a long service life, with easy repair and excellent flexibility, Everguard TPO can bespoke the most difficult of design situations, while continuing to perform for many years in the most challenging of conditions.

The Everguard TPO membrane system, comes with a large inventory of supporting install accessories; featuring trafficable walkway treads for roof service and access, a full range of corner and roof penetration flashings / junctions and supported by GAF’s own colour-matched TPO bonded sheet aluminum; essential for creating custom metal flashings, such that Everguard can be easily heat welded, surface to surface – creating that near perfect, near seamless finish that is easy on the eye.

Modern residential buildings, often have decking applications that require a waterproofing membrane; with Everguard now becoming the popular go-to choice.  Not only because of its ease and speed of application, but also for its simplicity of weld-repair if needed, coupled with a very efficient draining surface, such that Everguard systems remain clean and free of fungal debris year round; a practicality that is advantageous over granular systems, whereby the decking membrane is overlaid with a trafficable surface, such as found with timber or ceramic tiles, mounted over supplementary under-jacks.

Virtually every type of roofing system in New Zealand, including not only expansive commercial applications, but also smaller residential installs, have gutter discharge requirements.  Herein, Everguard provides for superior internal and external needs.

Generally, the most common requirement for a commercial gutter system, is for factory roofing requiring a long-life internal gutter membrane; ie rain water collection and or diversion.  Everguard Extreme TPO lends itself well to this requirement, not only for its smooth free flowing and natural fungal resistant surface, but also for its long service life.  Everguard Extreme comes with a pro-rated warranty offering up to 30-years performance, reducing the need to replace the gutter lining, well before having to replace the main roof.

EverGuard® TPO Key Features

∎ Energy Saving – Much cooler roof being light gray coloured, making it a cooler option than torch and EPDM Rubber. Solar reflectivity lowers cost of air-conditioning and reduces thermal expansion and contraction.

∎ Stronger Joints – Joins are up to 4x stronger than other membranes as joints and laps are traditionally the weakest part of a membrane roof however, TPO uses welding technology to create a seam stronger then the membrane itself.

∎ Warranties – 20, 25 and 30 year warranties coming 3 different weights 45mil, 60mil and 80mil.

∎ Faster – Much faster to install than EPDM butyl or torch membranes.

∎ Consistent – Robotically wielded seam welded on site for a perfect weld every time greatly reducing the chance or failures from improper application or contractor error.

∎ Safe – Zero fire hazard during construction unlike torch membranes that are a construction insurance issue along with worker safety and project security.

∎ Water collection – Potable drinking water collection for use in pools or consumption.

∎ Wide rolls – 66% less joins achieved by 3m wide rolls compared with 1m rolls of torch.

∎ Easier to install – Full accessories available for every detail and corner including penetrations.

∎ Option – Bonded fleece back option.

∎ Odorless – No odor during or after installation.

∎ UV Resistance – Excellent industry leading long-term heat and UV resistance.

∎ Reinforced – Mesh layer in the core of the membrane making TPO puncture resistant and less likely to travel or move for the life of the roof.

∎ Easy to repair – Can be altered and welded after installation.

∎ Strong wind – Uplift rating with a fully adhered installation.

∎ Incredible smooth – Clean finish and look consistently pleases customers.

∎ USA manufactured – By North Americas largest roofing manufacture GAF.

∎ NSF/ANSI 347:  Providing architects and contractors with a certified sustainable option for single-ply roofing membranes.

∎ EPDs:  Publishes Environmental Product Declarations (EPDs) for Single-Ply Roofing Membranes.

Everguard® TPO range and performance expectation

Everguard 60 mil, 1.5 mm fleece back in ‘grey’ colouration, is the natural choice for concrete substrates and in many cases for reroofing over old or failing membrane systems. The addition of the factory bonded fleece backing to the underside of Everguard TPO, not only provides excellent adhesion, but also helps smooth out many imperfections that the concrete substrate may present. It also provides a barrier for applications whereby Everguard may come in contact with a material not directly compatible with TPO, such as overlaying an existing granular torch-on membrane. The choice of installing Everguard fleece back, allows for high performance and durable flexibility, when faced with a perplexing substrate.

Everguard 60 mil 1.5 mm smooth, in ‘grey’ colouration is our most popular TPO product here in New Zealand, with extensive applications on both residential and commercial buildings since first arriving here in 2011.

Typically installed over a plywood substrate and bonded with traditional GAF bonding adhesive 1121, or our newly introduced GAF – Quick Spray adhesive system, making Everguard grey the superior choice for roofing, decking and or gutters, or for that unique application.

This is our most cost effective TPO membrane and a superior choice when compared to any comparable TPO product on the market today. Such that Everguard TPO is the most highly respected membrane in its class globally and without sacrificing any performance expectation.

When one requires a membrane with extended performance; a longer service life and warranty;  Everguard Extreme 60 mil 1.5 mm in ‘white’ can meet these expectations. Whether you have an internal gutter system that has limited access after installation, or you require a membrane that will stand up to the added heat values from solar intensity;  Everguard Extreme has been specifically engineered to out-perform under intense solar heat loading and UV, and has proven to outlast every competitor under independent accelerated age testing.

Truly a fantastic membrane, capable of reflecting intense solar energy for a cooler building, with lowering air-conditioning costs, while increasing the membranes service life. Lower energy costs, coupled with longer product life-cycling, all contributing to less maintenance and extended longevity. Herein, making Everguard Extreme, a superior and naturally  greener choice of membrane, in a class of its own.

Now for the gold standard in TPO membranes.  Everguard Extreme – 80 mil in ‘white’ is GAF’s top of the line product, at 2.0 mm thickness. Engineered with all of the advance technology of our standard Everguard – Extreme 80 mil provides for all of the benefits and performance expectations of standard, while increasing the service life and warranty respectively and well beyond most membrane’s on offer.

Everguard Extreme 80 mil, is more suited to those long life applications, commercial factory roofs and gutters and those areas that are difficult to service or access. Engineered to endure intense solar exposure, whereby ordinary membranes may over temp and age prematurely.

For environmentally focused applications, Everguard Extreme can reduce naturally the operational energy costs, simply by reducing the air-conditioning – energy component.  Secondly, with Extreme 80 the longevity expectation of this superior roofing system, can reduce significantly the need for early reroofing during the life cycle of any given building.  In addition, note – Redlist Free Everguard systems are available.

Suitable Substrates and Application


Everguard has been specifically designed by GAF to be installed over concrete substrates, using Everguard Fleece-back TPO and WB181 water based bonding adhesive.  Together, providing for a flexible and secure solution for those applications requiring a waterproofing membrane over a concrete substrate. Note, concrete substrates should comply with the prestart checklist, before installation of Everguard TPO.

The most common substrate for TPO in New Zealand is plywood – generally 17 mil or 19 mil and is typically used for roofs, decking and gutter applications. Smooth TPO is installed as either Everguard standard, or Everguard Extreme variants and as specified.  Plywood as a substrate lends itself nicely to a wide variety of shapes, angles and even curves, with the inherent flexibility of TPO allowing for easy installation over such complex design elements. Plywood substrates should also comply with the prestart checklist, before installation of Everguard TPO.


PIR or ISO insulation board, is a native substrate for GAF Everguard TPO membrane and is often produced in the same GAF plants as TPO. This type of board can provide for various grades of insulation, together with custom gradient solutions for flat roofs. GAF are a large supplier of PIR, ISO board and have a wide range of products including various coverboard offerings complimentary to TPO.

Re-roofing, or over-laying existing roofs, decking and or gutters can be achieved with selected Everguard TPO products.  Each installation will naturally depend on the existing membrane, aging and condition. Please consult GAF technical support, or arrange for a Specialist Roofing Contractor to site visit and assess the buildings requirements.

Flame-free Installation

All GAF Everguard TPO systems, have flame-free installation, greatly reducing the risk of fire common with many bituminous types of naked flame installs, such as torch-on. Understandably, many locations around the world are now banning ‘open flame’ welded systems on building sites, as insurance companies refuse to cover such projects given the very real and unnecessary risk of fire and especially so, of fire spread.

Modern engineered membranes such as Everguard TPO, utilise state of the art electric welding systems that provide a high degree of control and accuracy, while yet producing a clean welded seam up to 50mm wide. Welding tools consist of a hand welder for smaller applications and fine detail, and for those larger applications, a self-propelled robot welder, whereby an onboard computer controls not only the speed of the weld, but also the necessary welding temperature; creating a consistent seam for the entire length of roof .

TPO Installation Video

QuickSpray Adhesive

T-Joint Heat Welding

See our design documents here

See our TPO accessories here