BS EN 62305 is the latest reference document for protection against lightning.It is the British edition of the European standard to which all lightning protection systems to new structures, and new extensions to existing ones, are now designed, installed and maintained. BS EN 62305 comprises four parts and these detail the fundamental requirements for lightning protection systems for the external and internal parts of a structure.

The four parts are as follows:

  • Part 1: General principles
  • Part 2: Risk management
  • Part 3: Physical damage to structures and life hazard
  • Part 4: Electrical and electronic systems within buildings.

BS EN 62305-1 provides the general principles to be followed in the protection of structures against lightning, including their installations and contents as well as people. BS EN 62305-2 is applicable to risk assessment for a structure due to lightning flashes. Its purpose is to provide a procedure for the evaluation of such a risk. BS EN 62305-3 provides the requirements for protection of a structure against physical damage by means of a lightning protection system (LPS), and for protection against injury to living beings due to touch and step voltages in the vicinity of an LPS. BS EN 62305-4 provides information for the design, installation and maintenance of lightning electromagnetic impulse (LEMP) protection measures for electrical and electronic systems within structures, able to reduce the risk of permanent failures due to LEMP.

 

To ensure that Sarnafil roofing systems can accommodate the  the provision of lightning protection to BS EN 62305 , Sika Limited can provide the Sarnafil G/S and Sarnafil T lightning protection clips. Installed by a Sarnafil Roofing Contractor or Sarnafil trained and registered  lightning protection installer and subject to the agreement of the Sarnafil Roofing Contractor (who has contractual responsibility for the roof), the Sarnafil lightning protection clips are simply hot air welded directly to the Sarnafil membrane.

PVC Lightning Conductor Clips

The Sarnafil Lightning Conductor Clips are manufactured from high performance polypropylene, UV stabilized against degradation by sunlight and non-brittle to prevent cold weather damage. The clip allows for the attachment of various lightning conductor tapes to the Sarnafil G/S roof system. The 90mm diameter base is available in P-PVC for Sarnafil G/S membranes. The retaining clip is attached to the circular base with a stainless steel nut & bolt. The retaining clip and base come complete as one unit. Available for non-coated lightning conductor tape or P- PVC coated lightning conductor tapes

T Lightning Conductor Clips

The Sarnafil Lightning Conductor Clips are manufactured from high performance polypropylene, UV stabilized against degradation by sunlight and non-brittle to prevent cold weather damage. The clip allows for the attachment of various lightning conductor tapes to the Sarnafil T roof system. The 90mm diameter base is available in polypropylene for Sarnafil T membranes. The retaining clip is attached to the circular base with a stainless steel nut & bolt. The retaining clip and base come complete as one unit. Available for non-coated lightning conductor tape.

Sarnafil Lightning Conductor Clip

The Sarnafil® Lightning Conductor Clip is manufactured from high performance polypropylene, UV stabilized against degradation by sunlight and non-brittle to prevent cold weather damage.

Hot air welded, lightning conductor clip for Sarnafil G/S & TCG/TCS membranes.

 

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