Case 2

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Maintenance and Diagnostics

Unfortunately, whenever the conditions are right (minerals and organic material for algae, moisture, warmth, and a little light), algae type growth will return and treatment must be repeated. Yearly treatment may suffice in most areas. New roofing materials resistant to algae growth are now available. They will retard algae discoloration for longer periods of time.

Here are some very important statistics on biological growth:

  1. 50% of homes contain problem molds.
  2. A new study attributes nearly 100% of chronic sinus infections to mold.
  3. A 300% increase in the asthma rate over the past 20 years has been linked to molds.

Roof is a favorite spot for biological growth like mold and algae! Weathering and these growths cause billions of dollars in surface damage to roofs each year. The presence of dirt, fungus, algae, mold and mildew on a roof’s surface can lead to color change, embrittlement and oxidation. Once the integrity of the roof is compromised the surface is then vulnerable to environmental and biological attack, requiring cleaning or replacement to fix the problem.

Over time, the biological growths on the roof can actually shorten the its life. As the roof darkens with algae growth, more heat is absorbed from the sun, making your roof less effective in reflecting the UV rays.

Flat Roof Maintenance

Step 1: Clean the roof

A clean surface is essential for any roof maintenance work.

Step 2: Reinforce all flashing

Seal and reinforce all flashings with heavy duty patching compound. These strong patching materials insure extra protection for these critical areas of the roof.

Step 3: Repair all trouble spots 

Repair all blisters, cracks, open seams, or other trouble spots with heavy duty patching compound and heavy duty patching fabric. Again, these tough patching materials provide extra protection against leaks for existing trouble spots.

Step 4: Prime the roof

If the roof surface is very dry or had a great deal of dirt and dust, it should be primed with heavy duty primer. This insures that the coatings to be applied later are not absorbed by the dry surface and also insures that the new product will bond well to the existing surface.

Step 5: Protect the surface

Protect the existing surface with a coating of heavy duty roof coating. This seals hairline cracks and provides a new weather surface for the roof which has superior resistance to the new aging cycle.

Step 6: Clean the roof

If additional energy efficiency, roof life and beauty are desired, coat the finished roof with aluminum roof shield after the heavy duty roof coating has cured.