Hasslinger Roofing provides the highest quality roofing, siding, and gutter services at fair prices. Serving Frederick County and surrounding areas since 2009. MHIC 128864We specialize in the installation, repair, and replacement of slate, copper, and shingle roofs. Whether you want to replace your slate tiles with shingles, or you need a simple roof leak repaired, Hasslinger Roofing has you covered.