Slate roof repair in Little Rock that keeps the original stone working

Good slate can outlast the house it sits on. What gives out first is everything around the stone: the iron nails that held each piece, the flashing at the chimney, and the felt underneath. When a nail rusts through, the slate slides down and leaves a gap that lets water reach the deck.

That is why a slate roof with a leak is usually a repair job. We look for the specific pieces that moved, cracked or broke, and we check the metalwork that ties the roof to chimneys, dormers and walls. On most older roofs we find that 95 percent of the stone is still sound and worth keeping.

Replacing a sound slate roof with shingles throws away material that still has years left in it. Repair keeps the look of the house and usually costs a fraction of a new roof.

Slate shows up most on the older housing stock in neighborhoods like the Quapaw Quarter and Hillcrest, where steep roofs, turrets and dormers were built to carry heavy stone. Some of these roofs are original, and some have been patched over the years with whatever was handy, including asphalt shingles, roofing cement and mismatched slate.

Those old patches are often the source of today's leak. Tar smeared over a cracked slate holds for a season or two, then shrinks and lets water track under the stone beside it. We remove the patch, set a proper slate, and leave the surface clean so the next inspection is easy.

If a home sits in a local historic district, exterior changes may need review before work starts. Matching the existing slate in color, size and thickness keeps a repair in character with the house, and we can talk through what that looks like before any stone goes up.

Spring hail is the biggest threat. Large stones can crack slate, especially thinner pieces or ones already weakened by age. After a hailstorm we look for fresh breaks with clean, bright edges, which are easy to tell apart from old weathered cracks.

Summer heat and humidity are hard on the parts under the stone. Old felt dries and crumbles, and moisture trapped against the deck speeds up nail rust. Pine and oak limbs that fall during straight-line winds can shatter several slates in a row and dent the copper or galvanized valleys below.

Winter freeze and thaw does its damage slowly. Water that gets into a crack expands when it freezes and splits the slate further, so a hairline crack in January can become a missing piece by April.

• Broken or missing slates visible from the street or yard
• Slate pieces sliding down and hanging past the course below
• Old tar or roofing cement smeared across several slates
• Water stains on ceilings under chimneys, dormers or valleys
• Shards of slate collecting in gutters or flower beds
• Green copper streaks or rusted flashing around the chimney

A repair only looks right if the new stone matches the old in color, thickness and length. We measure the exposure on your roof and look for salvaged or new slate that fits. Some colors weather over time, so a close match today blends in further as it ages.

Each replacement piece is set with a copper slate hook or a copper nail and strap method, depending on the roof. We do not face nail slates and smear them with caulk, because that method fails early and makes the next repair harder.

Crews work from roof ladders and hooks rather than walking on the stone. Slate breaks under boots, and a careless crew can turn a five slate repair into a fifty slate repair in an afternoon.

• Matched slate by color, thickness and exposure
• Copper hooks or copper nails, never steel
• Roof ladders and hooks to keep weight off the stone
• Old tar patches removed, not covered over

Many slate leaks are really flashing leaks. Chimney step flashing, counterflashing and open valleys were often built from copper or terne metal, and decades of expansion, acid rain and old repairs can wear holes in them.

Rebuilding flashing on slate means lifting stones carefully around the area, replacing the metal, and resetting the same slate where possible. We photograph the old metal before it comes out so you can see the holes and the reason for the work.

Ridge caps also need attention. Mortar or old cement on the ridge cracks over time and lets water run straight down into the attic, and a clean ridge rebuild is often a modest fix that stops a stubborn leak.

There is a point where a slate roof needs more than repair. If the stone itself is flaking, turning soft or delaminating across large areas, new pieces will keep failing around it. Soft slate sounds dull when tapped instead of ringing, and that is one of the checks we make.

Even then, the decision is yours. We show you photos of what we found, explain what a repair buys you and what a replacement would involve, and give a written price before work starts. Most of the time, a well kept slate roof still has plenty of life left once the failed pieces and flashing are dealt with.

Slate repair is priced by how many stones are involved, how hard they are to reach, and whether flashing has to be rebuilt.

Matched slate availability and steep, tall roofs with turrets or dormers are the two things that move these numbers the most. See the full roof pricing guide.