Axter EXCEL® system
Axter EXCEL® system |
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Timber and timber derivatives
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Listed below is a general specification using a single-ply polymeric membrane. (Axter can provide written detailed specifications to suit any building on demand)
| Usage | Products |
| Deck | Timber boarding, plywood or OSB boards as required, all installed as per relevant British Standard or industry Code of Practice. All timber and boards must be securely fastened to the substrate and joints taped with Axter's AFT 50 self-adhesive aluminium tape. |
| Primer | Prime deck with Axter's VERNIS ANTAC (see brochure) quick drying primer and allow to dry. (Not required for timber boarding where the v.c.l is to be attached by nailing.) |
| Base layer | Timber boarded decks - Fully bond Axter's HYRANGER SPOT S3V, 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. Additional fixing using large headed, galvanised clout nails at 75mm centres will be required on slopes > 5° Plywood, OSB, etc - Loose lay Axter's THERMECRAN perforated base layer. At roof edges and around all upstands the THERMECRAN should stopped short so that the top layer can be fully bonded to the deck. The amount of full bonding is dictated by the local wind conditions, Axter can advise as required. |
| Top layer | Fully bond by torching to the under layer Axter's EXCEL HR S, Alpa-mix modified bitumen membrane, colour to choice. Side and end laps to be carefully torch bonded with a 2mm bitumen visible bead. |
| Details | At the base of all upstands a reinforcement layer of Axter's HYRANGER 35 PY angle strip 250mm girth should be installed centrally in the angle and bonded to both flat and vertical surface. The top layer should then be taken up the upstand. |
| Rainwater outlets | A 1m x 1m soaker of Axter's HYRANGER TS CPV membrane must be installed prior to the installation of the waterproofing layer and the flange of the rainwater outlet should be encapsulated between the two layers. |
| Gutters | A base layer of Axter's HYRANGER TS CPV must be fully bonded to the deck prior to the installation of the EXCEL HR S. |
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 above 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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