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Flat Roof Maintenance

1. Pick up branches and other debris that falls on the roof after storms
2. Remove sludge that accumulates around drains. This sludge comes from pollution, construction dust etc
3. Flush downspouts and drain pipes with large volumes of water to wash sludge from elbows.
4. Use cleanouts to keep pipes flowing freely
5. Replace rusted out pipes so that the pipes don't rust through and cave in during a heavy rain.
6. Keep strainers in place over flat roof drains. Weight them down to keep them from moving in the wind.
7. Keep the roof shoveled off during heavy snowfall to reduce the bearing pressure on the roof.
8. Keep moss sifted out of gravel and thermal masses to avoid water logging of water-resistant membranes. This also allows the roof to drain and dry out faster than if the moss remained.
9. Keep a high volume sump pump, an extension cord and a sufficient length of high flow discharge tubing to pump water off the roof in an emergency.

If lower areas are muddy, water can accumulate on flat roofs.

This clogged drain pipe has backed up, increasing hydrostatic pressure on the roof, causing it to leak.