Slate, Tile & Cedar Shake Roofing in Annapolis, MD

Natural slate is split stone. Good slate can last for generations; what wears out first is usually everything around it: the nails that hold each slate, the flashing in valleys and at chimneys, and the underlayment beneath.

Common slate repairs include:

• Replacing cracked, broken or slipped slates one at a time, using matched slate and fastening methods that do not damage the pieces around them.
• Rebuilding valley and chimney flashing, often in copper, while lifting and reusing the surrounding slate.
• Re-securing ridge and hip slates that have loosened in wind.
• Correcting old repairs, such as tar-covered patches or exposed nails that hold water against the stone.

When slate itself is failing, it flakes, delaminates, turns soft or crumbles at the edges. A roof with widespread failure of this kind may need a full roof replacement, and the choice of new slate, salvaged slate or a different material depends on the house, the budget and, in the Historic District, approval.

Tile roofs are heavy, durable and mostly fail at their weak points: broken tiles, failed underlayment beneath sound tile, and flashing at walls and valleys. Many tile roofs can be repaired by lifting the tile, replacing the underlayment and relaying the same tile. We source matching replacement tiles where they are available and tell you when a match is not possible before work starts.

Cedar shakes give a textured, natural look, but they need to dry out between rains. On shaded lots, which are common in neighborhoods like those covered on our Arnold roofing page, shakes can stay damp, grow moss and split. Repairs involve replacing split or rotted shakes and clearing debris; replacement involves new shakes over an underlayment and ventilated base that let the wood breathe.

Inside the Annapolis Historic District, slate, cedar and historic metal roofs are generally expected to be retained and repaired while they remain serviceable. Replacing them with a different material on a visible elevation needs Historic Preservation Commission approval, and the Commission prefers repair to replacement. Strong photographic documentation of genuine failure is what supports a replacement application.

Our Historic District roofing and HPC approval guide explains the process in detail, including the documentation the Commission expects. Our roof inspection provides the photographs and written findings that process depends on.

Slate and tile are much heavier than asphalt shingles or metal. Moving from a lightweight roof to slate or tile can require a structural engineer to confirm the framing will carry the load, and a permit for the structural work. Going the other way, from slate to a lighter material, does not create a structural problem but can change the flashing, trim and appearance. Lighter alternatives with a slate or shake look include metal shingles; see metal roofing.

Slate, tile and cedar repairs cost more per piece than shingle repairs because the work is slower, the material is more expensive and matching takes time. Full replacement with natural slate or tile is among the most expensive roofing options, but the long service life changes the calculation. We price repairs and replacements separately so you can compare them honestly. For broader context on roof costs, see our roof replacement cost guide.

Call (410) 348-8473 or use the form below to arrange an assessment of your slate, tile or cedar shake roof.