As a condition of ensuring that Multiwall sheets perform at optimum throughout their service life and retain light transmission properties, it is recommended that the sheets be cleaned periodically using suitable household cleaning agents as follows:
- Use lukewarm water to rinse the sheet and soften dirt.
- Make up a solution of lukewarm water and ordinary household cleaner or a mild soap and use this to wash the sheet.
- A sponge or soft cloth should then be used to gently remove dirt and grime.
- The cleaning process should then be repeated and the sheet rinsed and dried with a soft cloth.
WARNING
Care should be taken to observe the following precautions:
- Do not scrub Multiwall sheeting with brushes or sharp instruments as the sheet will mark easily.
- Never steam clean, use low pressures for pressure washing.
- Avoid any abrasives or cleaners of a highly alkaline composition.
- It is generally advisable in all instances to test any cleaner on a sample piece of the Obsidian roof sheet first and it should also be remembered that cleaners and solvents which state that they are suitable for cleaning polycarbonate may not be safe for use on the UV protective surface of the panels.
