Waterproofing Inspection Checklist

• Substrate clean and dry
• Primer applied and cured
• Correct thickness
• Corners and penetrations reinforced
• Overlaps sealed
• Protection layer installed
• Flood test passed

Before application

• Substrate cured, clean, dry and free of sharp edges
• Weather forecast checked (no rain, temperature within limits)
• Materials stored correctly and within shelf life

During application

• Primer coverage and drying time respected
• Thickness measured with a wet-film gauge
• Overlaps and laps sealed
• Corners, drains and penetrations reinforced

After application

• Visual inspection for pinholes, blisters and gaps
• Flood or spray test where possible
• Protection layer installed before other trades work on the area

Documentation

Record batch numbers, weather conditions and test results. Good records make warranty claims and future maintenance much easier.

See waterproofing grade gilsonite.