Flat Roof Leak Troubleshooting

A leak seen indoors is the end of the water path, not necessarily the beginning. This troubleshooting path helps you move from the symptom inside the building toward the likely roof defect.

Indoor symptom: dripping or staining

Record the location and when it occurs. If water is actively dripping, see Flat Roof Dripping Through the Ceiling.

Weather pattern

If it happens mainly in severe rain, read Flat Roof Leaking After Heavy Rain. If it followed damaging weather, read Flat Roof Leak After a Storm.

Safely inspect likely external areas

Look for cracks, splits, failed seams, edges, rooflights, walls/upstands, drains and penetrations. The Flat Roof Leak Help Centre links to each defect-specific guide.

Check drainage and ponding

Standing water can expose weaknesses and indicate drainage or fall issues. Read Flat Roof Ponding Water.

Check whether the problem is localised

If the surrounding roof and deck are sound, a local repair may be possible. If deterioration is widespread, use the repair or replacement decision guide.

Considering reinforced local repair?

Read How the SealForge Reinforced Repair System Works and, if suitable, view the SealForge Reinforced Flat Roof Repair Kit.

Safety: Do not access a wet, icy, fragile or unsafe roof.