How to Clean Algae from Your Roof: A DIY Guide

Have you noticed black streaks and stains that look like molds on your roof? If your roof is made of light-colored asphalt shingles, what you saw is a blue-green algae that grows in warm, humid weather.

The good news? The algae will not cause damage to your roofing. The bad news, though, is that it looks like an eyesore that makes your home’s exterior less picture-perfect. Before your home turns into a haunted house, thanks to your badly looking roof, you need to do something about it.

What to do when your roof has algae on it

You have two options: remove your entire roofing system and install new roof shingles to hide the ugly stains, which is the right solution if your shingles are already worn out and are nearing the end of their service life.
But what if they are not? Then go for the cheaper solution: clean your roof to get rid of the algae.

How to clean your algae-covered roof

Here are the steps on how to properly eliminate algae from your roof shingles:

  • Wet your foundation plantings to protect your plants from the bleach that you will use later.
  • Mix bleach and water.
  • Transfer the mixture to a spray pump with low pressure. Do not use a pressure washer, as it will damage your roof shingles.
  • Spray the cleaning solution to the roof.
  • Insert strips of copper or zinc (about 6 inches wide) under the row of shingling nearest to the peak of the roof. Leave 2 inches of the lower edge exposed. This step will prevent algae from appearing again on your roof.

As you may notice, it does not cost much to get rid of those annoying algae growing on your roof. You do not even have to replace your whole roofing just to maintain the clean look of your roof.

A Roof Inspection Guide for When You’re Buying a House

When purchasing a new home, you have to check every part of it to ensure that you will get the best value out of this possible investment.

Why is checking the roof important?

The roof is one of the most important yet the most overlooked parts of the house when a prospective homebuyer inspects a property for sale. This protective structure covers a house and keeps its interior from any damaging external elements. Once it is worn out, it can cause more serious problems for any homeowner. Any structural problems with the roof can cost you huge amounts of British pounds in the long term. When the tell-tale signs of roof damage appear, repair or replacement should be in order.

What to look out for when buying a home

So before you sign the deal with your home developer, visit the site and do a visual inspection of the house to check its condition and identify any issues with a certified home inspector. In particular, pay close attention to the roof. Check for the following signs of roof damage:

  • Presence of molds, mildew, or algae
  • Damaged gutter
  • Roof shingles that are loose, curled, or missing
  • Asphalt shingle grains that may indicate worn-out shingles
  • Cracked caulk
  • Rusty areas

How to check for signs of roof leaks

When checking the roof condition of the house you are going to buy, do not forget to inspect it for potential leaks. Check for the following visual symptoms of a leaky roof:

  • Openings around the chimney
  • Peeling or flaking of paint around overhangs
  • Dark spots on the ceilings
  • Wet areas around the fireplace

Once you have written down all the signs of roof damage, you can contact us for any necessary roof repairs or replacement to make sure that your roof is in mint condition before you move into your newly purchased home.