The Duo/Duotherm Green Roof system differs from the standard Duo/Duotherm Roof & Deck Membrane as the cap sheet has a root resistant additive, making it specifically designed for use on green roofs, roof gardens, planter boxes and courtyards. It offers a superior, durable and root resistant waterproofing system, with the usual benefits of the DUO membrane; fire retardance, 35 year expected durability in New Zealand climates, and UV-resistance (meaning it can also be left exposed). 

The system has a range of base sheets suitable for different building requirements, including self-adhesive membranes, making it a customisable solution with UV and weather resistance suitable for any location and wind zone in New Zealand. With the correct primer, Duo/Duotherm Green Roofs can be applied over a range of substrates.

Approved for substrate with finished falls of:

• Roofs:Minimum 1:80 (0.7°)
• Decks: Minimum 1:80 (0.7°)
• Gutters: Minimum 1:100 (1%)

   

Before the installation of the soil and planting the membrane shall be covered by an Equus drainage and protection mat layer such as Danodren H15 Plus. This layer assists with the protection of the membrane and drainage of the soil.

The product must be installed by a Certified Equus Applicator. Verification of their status can be confirmed by a current applicator certificate or by contacting Equus Industries. Any installation must be done in accordance with the latest specifications and technical documentation, or with written approval by Equus Industries Ltd.

• B2 Durability — B2.3.1 (b), DUO & DUOTHERM LANDSCAPE Membrane has a durability of at least 15 years, and a life expectancy of 35 years, when installed with the correct specification, installation, and maintenance. 
• E2 External moisture — E2.3.1, E2.3.2, E2.3.7 Test data, together with in-service history in New Zealand and internationally, of the correctly installed DUO & DUOTHERM LANDSCAPE Membrane over correctly designed and constructed substrates, show that the membrane successfully resists the ingress of moisture. 
• E3 Internal moisture — E.3.3.1 DUOTHERM LANDSCAPE Warm Roofs provide the habitable buildings with adequate thermal resistance and R-values that are equal to or above those specified in E3/AS1. 
• F2 Hazardous building materials — F2.3.1 Well known experience with the type of materials used together with in-service history, show that DUO & DUOTHERM LANDSCAPE Membrane complies with this performance requirement. 
• H1 Energy efficiency — H1.3.1 (a) DUOTHERM LANDSCAPE Warm Roofs provide the building with adequate thermal resistance and R-values that are equal to or above those specified in H1/AS1 and H1/AS2.

See CodeMark CMNZ70151, BRANZ Appraisal 685, BRANZ Appraisal 1169, DUO Durability Study. 

Duo membranes have over 20 years in service history in New Zealand.

• Warranty 20 years (25 years available) with the correct specification and installed by an Equus Certified Applicator
• Additional 20 years insurance-back manufacturer warranty
• Life expectancy of at least 35 years in all New Zealand climates
• Easy to maintain
• Fire retardant membrane, strong UV resistance, and shrink-free