PermaTec EcoWrap & Anti-Root Hot Melt Green Roof Waterproofing

Approved for use on

Biodiverse Blue Roofs Brown Roofs Green Roofs Zero Falls Buried Roofs 

PermaTec EcoWrap & Anti-Root Hot Melt Green Roof Waterproofing systems are satisfactory for the use on flat (including Zero falls):

• roof gardens
• green roofs
• biodiverse specifications
• blue roofs in combination with a storm water attenuation system (storm water attenuation system is outside the scope of this certificate)

Substrate

Concrete Glass Timber 

The system is suitable for use on in-situ concrete, pre-cast concrete, concrete block, timber substrates, foamglass insulation (with a minimum compressive strength of 400 kpa), modified screeds and levelling compounds. The substrates must comply with the relevant requirements of BS6229 : 2018, and , where appropriate NHBC standards 2021, chapter 7.1.

Durability

Design Life of the Roof 

The PermaTec EcoWrap & Anti-Root Hot Melt Green Roof Waterproofing system, when protected and subjected to normal service conditions, will provide an effective barrier to the transmission of moisture for the design service of the roof in which it is incorporated.

Installation Requirements

The system should only be installed by contractors who have been trained and approved by the Certificate holder. Details of these are available from the Certificate holder.

Fire Safety

In the opinion of the BBA, a roof incorporating the system will be unrestricted with regard to proximity to a boundary under the National Building Regulations in the following circumstances:

• a roof garden covered with a drainage layer of gravel 100 mm thick and a soil level of 300 mm thick
• irrigated roof garden and green roofs
• when protected by an inorganic covering (e.g. gravel or paving slabs) listed in the Annex of Commission Decision 200/553/EC.

The performance of other specifications must be established in accordance with the documents supporting the National Building Regulations.

If allowed to dry, the plants used, may allow flame spread across the roof. this should be taken into consideration when selecting suitable plants for the roof. Appropriate planting irrigation and/or protection should be applied to ensure the overall-fire rating of the roof is not compromised.