- Provide cushioning by placing straw/thick tarpaulin on the truck bed before loading the roofing sheet during transportation, in order to avoid a punching effect from projected bolts/nails.
- Cover the sheets with a heavy-duty waterproof cloth during the monsoons. Entrapped rainwater can leave watermarks on the aluminium sheet.
- Don't load heavy material on roofing sheets.
- Avoid dropping the sheets from a height.
- Don't carry alkali materials (cement/fertiliser, etc.) with aluminium roofing sheets to avoid causing chemical reactions.
STORAGE & HANDLING
- Store sheets in a covered shed and protect the stack with tarpaulin.
- Stack the sheets on a batten with a longitudinal slope to allow condensation to drain away.
- Make sure to wipe the sheets dry in case of wetness or moisture.
- 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 to avoid losing design mould if kept at a height.
- Don't drop the sheets from a height or place them directly on the mud/cement floor.
FIXING & LAYOUT
- 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.
- 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.
- 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.
- Avoid walking on the roof without a cat ladder and avoid dents.
- Don’t forget to paint the purlins before installation of sheets.
- Use aluminium accessories to ensure extended life of the roof.
- Don't use copper/brass/bronze fittings or else bimetallic corrosion will occur.
- Earth the aluminium sheets correctly. Aluminium offers protection from lightning damage, due to its high electrical conductivity.
- Ensure that the design includes proper ventilation and sufficient sloping of the roof 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.
- Don’t use another conductor than aluminium.