Clay tile, slate and copper roof repair in Spring Valley (20016)

Walk Rockwood Parkway or Quebec Street and you'll pass Georgian Revival brick houses with slate hips, Tudors with steep cross gables, and a few Mediterranean-style homes under red or green clay tile. Many of these roofs went on when the houses were built and still have decades left in the stone and fired clay. What gives out first are the nails, the hooks and the metal between pieces.

Clay tile cracks when someone walks on it the wrong way, so a satellite installer or a careless gutter cleaner can do more harm than a storm. We cross tile roofs on padded hook ladders, never on foot across the field, and swap broken barrel or interlocking tiles for pieces of the same profile and glaze. Slate gets similar care: a slate ripper cuts the old nails, the new piece hangs on a copper hook, and nothing gets set in tar.

If pieces are slipping every season across several slopes, we'll say so plainly and walk you through repairing the slate in stages versus a full relay over new underlayment, with the reusable stone saved.

Copper shows up all over these houses: half-round gutters, valleys, step flashing at the chimneys, dormer cheeks and the occasional copper bay roof over a sunroom. The metal itself lasts a very long time, but soldered seams crack after decades of heat and cold, and valleys wear thin where water and grit have run across them since the house was new.

We look for green streaking below a seam, pinholes when a light is held behind a valley from the attic, and gutters that have lost their pitch because the hangers bent. A split seam gets cleaned to bright metal, fluxed and soldered. A thin valley gets replaced with 16-ounce copper, with the slates or tiles along it taken up and relaid by hand. Our copper roofing work covers bays, crickets and gutter runs too.

Skip the tube of sealant someone may suggest for a dripping copper joint. It holds water against the metal and makes the eventual solder repair harder.

Houses in Spring Valley tend to have big interior and end chimneys rising well above steep roof planes. Those stacks catch wind-driven rain, and the step and counter flashing where they meet the roof is the most common leak source we trace in the neighborhood. Mortar joints above the roofline erode as well, letting water into the brick. We rebuild the chimney flashing in copper and repoint the joints that need it.

Most homes sit on generous lots with private driveways, which helps. We set ladders or a lift at the side of the house, lay plywood on the drive under any material pile and cover boxwoods and stone walks below the work. On pitches this steep we stay tied off to anchors fastened into the rafters, working from roof brackets and planks rather than standing on slate.

Spring Valley is not one of DC's designated historic districts, so a repair in kind needs no preservation sign-off. A full replacement still goes through a DC Department of Buildings permit, which we file for you.

Oaks, beeches and tulip poplars arch over most lots between Massachusetts Avenue and the American University campus. By November the copper gutters on one house can hold several bags of wet leaves, and a clogged half-round spills straight onto brick walls and basement window wells.

We clean gutters by hand from the roof edge, flush the downspouts and check the hangers while we're up there. Two cleanings a year, one late in autumn and one in spring after the seed pods drop, keep most houses here out of trouble. A scheduled gutter cleaning is also a cheap chance to spot a cracked tile or a slipped slate before it starts dripping into a bedroom.