Shingle roof instructions:
Simply apply Streak-X Black Streak Neutralizer straight (un-diluted) to shingle roof, either pour from the bottle or use a sprayer agitate with soft brush, avoid stepping in the suds, this will be very slippery and dangerous. The area being treated will turn orange in color this is Streak-X doing its work.
After several minutes, rinse well.

* Avoid usage in direct sunlight or very hot roofs.
* Always test a small inconspicuous area for color fastness.
* Caution to where gutters and downspouts will drain dirty soap and residue, avoiding lawns, trees, and shrubs.