Avoiding a roof replacement

[Victor Eng]

Hello BP community,

I'm looking to avoid having to replace a roof. It's probably about 20 years old, asphalt three tab shingle, black (gray now due to the wear and tear). No leaks, no damage from plywood on the underside. What can I do to make the exterior more appealing without having to replace the entire roof?

[Matthew Paul]

If it has the black stains and streaks on it , or moss . You can call someone that  does low pressure roof cleaning