Prolight
1000/32 Box Profile
Polycarbonate Rooflights
Installation Guidelines
Workability
Prolight® can be cut or drilled using standard power tools.

Storage
Store Prolight® polycarbonate sheets on horizontal flat surfaces, pallets or wooden bearers with flat surfaces at least 100mm wide placed at centres not exceeding 900mm. Storage should be indoors as far as possible. Where Prolight® is stored outdoors it must be protected from the sun, wind and water. Cover securely with an opaque waterproof cover draped over timbers placed on the top of the stack and ensure that the stack is ventilated to prevent heat build up. Never stack more than 1.2m high. Sunlight is magnified in passingh through even a few uncovered stacked sheets, increasing their temperature and leading to distortion and degradation. Water between the sheets accentuates these processes.
Storage of Rooflight sheets
Safety
Prolight® is a glazing material and should therefore be handled with due care at all times. NEVER walk on Prolight® sheets. Where access across a Prolight® covered roof is necessary, use walking boards placed across at least three purlins to spread the load. Prolight® exhibits exceptional impact resistance, up to 200 times that of glass. If someone accidentally falls or walks on a correctly installed Prolight® rooflight it is unlikely that a serious accident will result.
Never Walk on Rooflight sheets

Installation Guidelines

  • When installing any roofing material, including rooflights, ensure that safe working methods are adopted and appropriate safety equipment is used.
  • Sealants and tapes must be compatible with polycarbonate.
  • All accessory materials should be light coloured, preferably white.
  • Sheets which spans up to two purlin spacings are of optimum length to cope with thermal movement.
  • Maximum recommended sheet length for Prolight® is 4m.
Thermal Movement
Prolight® has a very high coefficient of linear expansion; a 3m long sheet will expand by 5mm for a temperature rise of 25˚C. To accommodate thermal movement arising from temperature changes, holes drilled through the sheet for fixings must be oversized.

Hole Size
To accommodate thermal movement, holes for fixing should be drilled 6mm greater in diameter than the fixing shank for sheet lengths up to 2m and an additional 3mm per additional metre length of sheet. For example, in a 4m long sheet, holes should be overdrilled by 12mm. Failure to accommodate thermal movement will cause buckling of the sheet.

Fastener Installation
Fasteners must not be over-tightened as this will prevent thermal movement of the Prolight® sheet with changes in temperature. Prolight® must be isolated from Plastisol coatings using an aluminium foil barrier tape.

Fasteners

Cleaning & Maintenance
To maintain the light transmission of any glazing material, periodic cleaning is necessary.

Prolight® must be cleaned with some care, as it is not resistant to all cleaners and the surface can be marked easily. The recommended cleaning procedure is as follows:

  • Use lukewarm water to rinse sheet and soften dried dirt.
  • Make up a solution of lukewarm water and ordinary household cleaner or a mild soap and use this to wash sheet.
  • Use a sponge or soft cloth to gently remove dirt and grime.
  • Rinse with clean lukewarm water and repeat washing if necessary.
  • After final rinse dry off with a soft cloth.

Note:

  • Never scrub Prolight® with brushes, abrasive materials or sharp tools.
  • Never use strong alkali or abrasive cleaners
  • Never steam clean: Use low pressures if pressure washing.
  • Never use acetone, petrol, benzene, or solvents containing Butyl Cellosolve or Isopropanol.
  • Its is advisable to test the suitability of any cleaner on a sample piece of Prolight® first. After installation, labels, glazing compounds etc. can be removed using petroleum spirit, after which, wash the sheet as described in the above procedure.