This is called a flood test.
Roof leak dye test.
How to detect a roof leak 1.
Useful for testing roof drainage systems metal coping joints and penetrations.
If flood testing is still desired by a specifier it may need to be performed in segments when roof drains are separated by large distances.
Although flood testing can determine the existence of a leak it cannot precisely identify the location even with use of soluble dyes in the water.
Tablets dye for small amounts of water the tablets are clean and easy to use no measuring is required.
Look for discoloration on ceiling.
Determine if there is a roof leak.
Applying technology to flat roofing.
That s when a sewer dye test can be performed by a plumber.
They may be dropped or flushed directly into a drain sewer septic system etc where they dissolve in about 3 5 minutes.
Look for mold or mildew in attics or on walls.
Residential sewer dye testing if you are a homeowner you can also face the same problem of water leaking from an unknown source.
Such a test can determine if your home s yard drainage system is properly connected or defective.
Water down the roof with fresh water from either buckets or a hose.