Roof sheet with zinc/galvanizing layer
However the roof is subject to heavy wear and tear from hail, rain, scorching sun and heat, pollution, acid rain, wind, etc. These factors gradually wear away the protective zinc/galvanizing layer and at that point the roof will begin to rust.
Rust untreated will not stop. It continues to eat away at the roof sheets to the point where the roof has rust holes in it, causing leaks and possibly costly damage to the inside of the building, stock, computers, factory equipment, machinery, etc. Finally the roof is damaged beyond repair and will require replacement which is often unforeseen, unplanned and exceptionally costly.
Severely rusted roof
Not only do these environmental factors cause the roof sheets to rust but they also cause damage to other roof components like screws, skylights, gutters, flashings, etc.
Both the S.A.B.S. and the C.S.I.R. advise that roof sheeting should be painted/coated 2-3 years after installation so that no serious damage to the protective zinc/galvanizing layer occurs. This will optimize protection of the zinc /galvanizing layer against the harmful effects of rain/acid rain, pollutants, sun, wind, etc. If the roof sheeting is painted correctly at this time and the painting is repeated where required through regular maintenance, the roof sheeting will be preserved indefinitely
Severely rusted sheet, posing a safety hazard
The roof of your building constitutes a very large percentage of the total investment in the building, an investment that should be cared for to prevent loss. The roof is often neglected as it is not seen. This neglect can be incredibly costly.
As in the case of a motor car, it is far better and much more economical in the long run to maintain a roof regularly than to wait until serious problems are apparent which could cost a small fortune to rectify, or worse still, to find the roof needs replacement.
If avoiding serious roof damage and unnecessary financial losses is important to your company, then commencing roof maintenance as soon as possible is vital. This will ensure that you get the longest possible life from your roof, considerably reduce long term costs, leaks and damage.
Early and regular roof maintenance in accordance with certain C.S.I.R. and S.A.B.S. advices and recommendations puts the roof owner in a winning position both practically and financially.
These are the reasons why many large, success oriented property corporations are now adopting the policy of regular, and early roof maintenance.
Roofs that have been repaired, treated for rust and painted