Compass Exteriors recently completed a comprehensive roof cleaning in Stratham, NH, helping a homeowner restore the look of their roof while extending its lifespan. Moss, algae, and staining had built up over the years, making the roof appear older than it really was. f you’re in Stratham or the surrounding Seacoast area of New Hampshire and your roof is showing signs of staining or moss growth, Compass Exteriors offers professional roof cleaning services that are safe, effective, and designed to protect your investment.