Axter FORCE® 4000 TRAFIC system

Concrete deck
Hot rolled Macadam surface
FORCE 4000 TRAFIC system

Listed below is a general specification using a single layer waterproofing system. (Axter can provide written detailed specifications to suit any building on demand)

Usage Products
Deck Concrete, laid to achieve a smooth deck finish and laid to the correct falls. If overlaid with a screed this should be of lightweight aggregate and no fines concrete. An alternative is to lay the concrete flat and achieve falls with tapered insulation, not suitable for heavy traffic.
Primer Prime deck/screed with Axter's VERNIS ANTAC GC, 200 gm/m2, or VERNIS ANTAC (see brochure) , 300 gm/m2 quick drying primers and allow to dry.
Waterproofing layer Fully bond by torching to the primed surface Axter's FORCE 4000 Trafic (see brochure) polyester reinforced polymer modified bitumen membrane. Side and end laps to be carefully torch bonded with a 2 mm bitumen visible bead.
Details At the base of all upstands a reinforcement layer of Axter's HYRANGER 35 PY angle strip 250 mm girth should be installed centrally in the angle and bonded to both flat and vertical surface. The waterproofing layer should then be taken up the upstand. The waterproofing layer can be FORCE 4000 Trafic (see brochure) or the aluminium surface ARMALU.
Rainwater outlets, etc Flanges of rainwater outlets should be encapsulated between an under layer comprising a min 1m x 1m square of HYRANGER TS CPV and the waterproofing layer.
Protection In general the protection can be one or several layers of traditional hot-applied bituminous (macadam) coating the thickness of which is dependent upon the type of traffic expected. Axter can advise on suitable thickness. Protection can also be poured concrete or brick/block pavers.

Note:
The specification is for an un-insulated system. Warm roof insulated systems can be used where axle load is < 2 tonnes/axle; the following items will need to be added between the primer and the waterproofing layer
Vapour Control Layer High humidity building - Fully bond to the concrete deck Axter's VAP AL SK aluminium cored SBS modified bitumen auto-adhesive vapour control layer.

Low humidity building - Fully bond to the concrete deck Axter's HYRANGER SPOT S3 V, an SBS modified bitumen auto-adhesive vapour control layer.
Thermal insulation Fully adhere Axter's HYTHERM ADH CFC-free surfaced insulation. Thickness will be determined by "U"-value requirements. Axter can advise on required thickness and means of adhesion.
Under layer Fully bond to the insulation Axter's HYRANGER SPOT S3 V, an SBS modified bitumen auto-adhesive base layer. Care must be taken to ensure sealing of side and end laps by torching the top surface.

In general specifications should follow the guidelines given in:

British Standard Code of Practice BS 6229:2003, Flat roofs with continuously supported coverings.

British Standard Code of Practice BS 8217:2004, Flexible bitumen sheet roofing.

Specifications are given for roof slopes< 5°. Additional mechanical fastening will be required for higher roof slopes. Apply to Axter for further information.

Axter advises that an AXTERSHIELD INSTALLER, who has specialist knowledge of Axter's systems, installs the specification given below and from whom extended guarantees can be obtained.

Specifications listed are for guidance only and Axter cannot be held responsible for any errors or omissions. It is the specifier's responsibility to ensure that the specifications are suitable for the requirements of his construction.

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