Roof Abatement & Cleaning

 The third major structural exterior area to consider is the roof. As with exterior façade, biological growth can cause significant damage to the roof structure if left untreated.

However, the potential for catastrophic damage is more apparent: if a roof is compromised it can cause leaks that may cost thousands of dollars to remedy.

Technique and Frequency

Cleaning and maintaining your roof is really a two-step process, which is important to understand the frequency.

The first step is to clean the roof. This is almost always accomplished by an individual cleaning off debris and growth with a brush, or by hand. There is no quicker alternative, but this method ensures that no growth will remain that could effect the integrity of the roof.

Once the removal is complete the second step abatement work,  should progress. This usually involves applying an anti-fungal agent that will retard any growth for occurring. They can remain effective for over two years. Thus a realistic service interval could be 2~4 years, depending on the condition of the roof, its composition and biome. Subsequent visits will usually require significantly less time, since there will be less growth to remove, and efforts should be focused on reapplying the abatement agent.