IKO Metatech

Approved for use on

Flat Roofs Green Roofs Inverted Roofs Protected Roofs Roof Gardens Zero Falls Buried Roofs 

The system is satisfactory for use in green roof applications on

• new and existing flat roofs with limited access
• inverted roof specifications using aggregate ballast on flat roofs with limited access
• protected roof specifications using pavers or other suitable protection on flat and zero fall roofs with pedestrian access

Substrate

Concrete Reinforced Bituminous Membranes 

Metatech is satisfactory for use as a waterproofing system on flat and zero fall roofs with limited access, on substrates of:
• concrete
• reinforced bitumen membranes

Durability

25 Years 

Under normal service conditions, the system will achieve a service life of at least 25 years.

Installation Requirements

The system should only be installed by installers who have been trained and approved by the Certificate holder.

Fire Safety

When classified in accordance with BS EN 13501-5 : 2016, the following systems achieved a BROOF(t4) classification and so are unrestricted with respect to proximity to a boundary, by the documents supporting the national Building Regulations:
• a 12.5 mm thick cement board substrate, a Polimar FCS Concrete Primer coat applied at 0.5 kg·m-2, a Polimar FCS Waterproofing coat applied at 3 kg·m-2 , tested flat(1)
• a 12.5 mm thick cement board substrate, a 0.6 mm thick carrier membrane (self-adhesive bituminous
membrane, foil faced), a 130 mm thick PIR insulation layer (tissue faced), a 0.6 mm thick carrier membrane (self adhesive bituminous membrane, foil faced), a Polimar FCS Waterproofing coat applied at 3 kg·m-2 , tested flat(1)
(1) The test is applicable to systems applied to roofs of pitches between 0 to 10°.

In the opinion of the BBA, a roof incorporating the system will also be unrestricted under the national Building Regulations in the following circumstances:
• protected or inverted roof specifications, including an inorganic covering listed in the Annex of Commission Decision 2000/553/EC
• a roof garden covered with a drainage layer of gravel 100 mm thick and a soil layer 300 mm thick
• irrigated roof gardens and green roofs.

The designation of other specifications should be confirmed by reference to the requirements of the documents supporting the national Building Regulations.

In England and Wales, the system, when used in pitches of greater than 70°, excluding upstands, should not be used on buildings that have a storey at least 18 m above ground level and which contain one or more dwellings, an institution, a room for residential purposes (excluding any room in a hostel, hotel or boarding house), student accommodation, care homes, sheltered housing, hospitals or dormitories in boarding schools.

In Scotland, the system, when used in pitches of greater than 70°, excluding upstands, should not be
used on buildings that have a storey more than 11 m above ground level.