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Transportation

  • During transportation, do provide cushioning, by placing straw/thick tarpaulin on the truck bed before loading the roofing sheet, in order to avoid a punching effect from projected bolts/nails.
  • Cover the sheets with tarpaulin during the monsoons. Entrapped rainwater can leave watermarks on the aluminium sheet.
  • Don't load heavy material on roofing sheets.
  • Don't drop the sheets from a height.
  • Don't carry alkali materials (cement/fertiliser, etc.) together with aluminium roofing sheets. This may cause a chemical reaction.

Storage & Handling

  • Store sheets in a covered shed and cover the stack with tarpaulin.
  • Stack the sheets on a batten with a longitudinal slope to allow condensation to drain away.
  • In case they get wet, make sure to wipe the sheets dry.
  • Handle the sheets with care.
  • Don't let water collect between the horizontal sheets, as trapped moisture is likely to cause marks.
  • Don't keep too many sheets on one stack. If loose sheets are stacked too high, the bottom sheet will lose its design mould.
  • Don't store sheets near alkaline materials. This may cause a chemical reaction.
  • Don't drop the sheets from a height.
  • Don't place the sheets directly on the mud/cement floor.

Fixing & Layout

  • While cutting, use a pencil or a steel point mark and cut along the line with a blade/hacksaw. Ensure that the teeth are fine, in order to avoid uneven edges.
  • Lay the starting row sheets at the eaves end with proper alignment of the guide thread.
  • Pass the attachments (accessories) through the crowns of the corrugated or troughed sheet.
  • Do provide wider ridges/North Light Curves, while keeping sufficient cover beyond the accessories, in order to avoid leakage during the monsoons.
  • Paint the purlins before the installation of sheets.
  • A coat of aluminium paint on the contact face of the timber is recommended in order to ensure that no interaction occurs, especially due to damp climates.
  • Clean the sheet surface after completion of masonry work.
  • If you need to walk on the roof, use a cat ladder to avoid dents.
  • Avoid bending the sheets sharply.
  • Do not cut the sheets with a chisel, as it results in uneven edges and deformation of the profile.
  • Do not punch the sheets in order to make holes in them.

Fasteners

  • Use aluminium accessories to ensure extended life of the roof.
  • Don't use copper/brass/bronze fittings or else bimetallic corrosion will occur.

Environments

  • Earth the aluminium sheets correctly. Aluminium offers protection from lightning damage, due to its high electrical conductivity.
  • Ensure the use of aluminium conductors.
  • Ensure that the design includes proper ventilation and sufficient sloping of the roof. This is necessary to avoid condensation.
  • To avoid snowflaking, don't use aluminium sheets near concentrated sulphur dioxide/chlorine gas. Natural ventilation in adjoining bays is also very important.