Aloha SWS Community,

I recently called AC for advice about cleaning my first Masonite Fiber Roof. He requested that I share with the BB.

The past 3 weeks I have been working in one of Oahu's wetter, private neighborhoods. One of the jobs I landed was a Masonite Fiber Roof. I remembered covering these in the SWS Training Modules, though I've never cleaned one, nor had I cleaned a roof with thick moss growth. I quoted high based off the 5% solution required. However, I failed to remember they require multiple treatments.

First treatment was Oct. 26, two weeks ago. Per AC'S phone advice, I pre wet the roof with Green Wash.  A few copper gutters ended awkwardly, deep in the flowerbed soil, diverting the outlet was not possible so the downspouts were plugged at top and gutters were flushing constantly to one downspout at side of property. Before spraying bleach, my ground guy saturated all flower beds with water and Plant Wash. Zero plant damage is visible today, except on the roof. While I was spraying bleach, a fast moving downpour soaked everything, I thought the day was over. We were able to begin spraying 30 min later. Before the rain, the Green Wash had dried out, maybe the rain was somewhat beneficial even though it diluted what was already sprayed. Like the wet sponge wicking better? I lost bleach strength but at least the day was not wasted. All moss appears to be dead and easily breaks off. Shingles themselves didn't seem to lighten much.
I did not do any rinsing on the roof, did one more round of Plant Wash, cleaned up and packed out.

What do you guys do when heavy rain intervenes? Hawaiian rains are usually light, frequent and quick to pass. In this case it was quick but heavy!

Also, I feel like I overused water to flush gutters. Happy there is no plant damage, but don't want to be wasteful.

I have one serious concern and looking for advice, maybe in a different thread?

I have always felt confident walking roofs and at heights, until adding bleach and detergents to the surface. I have little experience with rope and harness. I am taking AC's Roof Safety Training seriously in preparation for training employees. My challenge is that once I add rope and harness to the picture I become tangled and inefficient. Due to my fathers business, I have been dealing with hoses since I was a sprout, hose management is no issue. I wouldn't want a customer watching me fumble around in my ropes, locating tie off points. I feel sloppy in that department. Looking for additional training.

I will follow up with this post after the second treatment.

Photos attached.

In Hawaii, A hui hou, means "til we meet again"

Darryl Freeman

Owner/Operator

Hawaiian Property Detailing

hawaiianpropertydetailing.biz