Streaky Ugly Roof? It's Probably Algae, and Here's What to Do About It

September 13, 2022

You might have noticed some discoloration on your roof. The black stains and streaks that appear on roofs (particularly light-colored asphalt shingles) are often confused or assumed to be black mold but are actually blue-green algae. Commonly found in climates with warm, humid summers like ours here in the Richmond metro area, it does no damage to the roofing, but it certainly looks bad. Thankfully you have several options to make your roof curb appeal friendly again!

You can clean it yourself, but be careful!

It is, of course, possible to DIY this, but safety is of the utmost importance. Professional businesses specializing in this have the correct safety equipment working on a roof and handling chemicals. They also have specialty pressure washers that can be brought to higher elevations, making the job much easier and safer.

There are many companies that you can hire to clean the algae off!

The Richmond, Virginia metro area has many reputable companies that you can simply hire to clean your roof. These companies have trained employees who know how to safely remove algae from your roof without damaging your home and yard. They can also apply products that will prevent algae growth on your roof, but they need to be reapplied each year.

In need of a new roof anyways? Here are some roofing products that will help.

Is your roof damaged, has popping shingles, or is otherwise in need of replacement? It may be time to replace while integrating streak-fighting shingles and components. Several products can keep algae growth to a minimum. GAF Roofing's Stain Guard Plus Algae Protection shingles, for example, provide a 25-year limited warranty against blue-green algae discoloration. Tredegar Construction would love to walk you through the best products to keep your roof beautiful and low maintenance through another generation.  


If your streaky roof is detracting from your curb appeal, you have many options available to help eliminate this unsightly problem. If your roof is ready for a replacement, talk to our team at Tredegar Construction about the right products to use on your roof to ensure you don't need to think about a streaky roof when considering your curb appeal again!  

Our service areas: Tredegar Construction provides Tredegar Construction installs asphalt shingle roofing, TPO membrane roofing, and silicone roof coating, siding, crawl space solutions, spray foam, and gutter replacement services in the Richmond, Virginia metro area and surrounding counties of Ashland, Charles City County, Chester, Chesterfield County, City of Richmond, Colonial Heights, Goochland County, Hanover County, Henrico County, Hopewell, King William County, New Kent County, Petersburg, Powhatan County and more! We also serve Midlothian, Short Pump, Petersburg, Bon Air, Mechanicsville, Manchester, Tuckahoe, Near West End, Manakin Sabot, Varina, Powhatan, Oilville, Ashland, Colonial Heights, Fort Lee, Museum District, Church Hill, Fan District, Bon Air, Moseley, Glen Allen, Atlee, Laurel, Rockville, Doswell, and more. Don't see your area listed? Reachout! We may serve your area!

Ready to get to work? Great! So are we!
Tredegar Construction is a top rated roofer in the Richmond VA metro area