When & How Often Should I Clean My Roof?

If you’re wondering whether the stains or moss on your roof are causing damage, What’s On My Roof?, located in Killingworth, Connecticut and serving the Connecticut Shoreline, can answer your questions and help you care for your investment.

Have you noticed dark splotches on your roof? Maybe some portions have a greenish tinge?  Or maybe it has some pock marks? Time to get your roof cleaned!

Your roof is the most important barrier between your home and family and the weather. And the weather in the Connecticut is pretty rough. Roof cleaning helps extend the life of your roof, saves you money, and adds value to your home. Aesthetically, it increases curb appeal and benefits not just you but the whole neighborhood.

The Three Enemies of Your Roof: Algae, Fungus/Lichens, and Moss

Algae, Fungus/Lichens, and Moss cause dark stains and green areas on your roof. They also damage your roof by accelerating shingle deterioration and wood rot. Each presents its own problem.

Algae eats asphalt and limestone roofing in places like Connecticut or wherever it’s cool and shaded. It can also spread from rooftop to rooftop in neighborhoods. Roofs with algae stains absorb heat which makes for high heat in an attic. This shortens the lifespan of the shingles by baking them from the inside out.

 Fungus/Lichens penetrate deep into the shingle’s organic oil base for nourishment, forming a branching growth of root-like tentacles that grow symbiotically with algae and damage shingles by creating pock marks and eventually ruining the shingles. They are difficult to remove and can reappear from humidity and rain.

Moss is a plant that has a shallow root system that makes your roof deck susceptible to wood rot and leaks. In Connecticut and other areas where the temperature dips below the freezing point, the moisture it retains freezes, causing the edges of the shingles to lift or curl. While moss growth is easy to see, wood rot underneath isn’t so obvious. Wood rot can also foster mold growth, which is hazardous to your health.


Can’t I Clean My Roof Myself?

You might be tempted to:

  • clean your roof yourself, or
  • hire a company offering to make your roof look new in short order by power washing it or treating it with bleach or some other material

This can easily cause more harm than good. Roof components can be easily pushed out of place by the strong spray of a pressure washer, and, if sprayed against the lay of the roof tiles, cause the tiles to lift up or force water underneath. Bleach and other material run off your roof, damaging trees and shrubs near the house.

What’s On My Roof? uses a special biodegradable cleaning solution that won’t harm your roof or your plants. Once the stains are gone, you can keep them away indefinitely by having the cleaner reapplied every 18 to 36 months.

What Else Can Be Done?

To help extend the life of your roof, What’s On My Roof? recommends and provides the following services:

  • Gutter cleaning in the spring and fall;
  • Having your roof vents checked for clogs and blockages;
  • Having your roof inspected, looking for loose, bent, or broken flashing;
  • Trimming back trees and bushes at least 1 to 2 feet from your house;

If your roof shows signs of algae, fungus/lichens, or moss, contact What’s On My Roof? using the contact form below, and one of our licensed professionals will come to your house for a free assessment.

Contact Us For A Free Roof Assessment