Local stone chimney repair for Mills 50 homes

Three ways a chimney ends up stone

A stone chimney can be built of solid stone masonry, with thick units that make up the wall itself. It can be natural stone veneer, thinner stone set against a masonry or framed backing. Or it can be manufactured stone veneer, a lightweight cast product adhered over a layered backing.

From the street, all three can look alike. Their repairs do not. We identify the construction first, because the right mortar, the right method and the right questions about water all depend on it.

• Solid stone masonry
• Natural stone veneer on a backing
• Manufactured stone over lath and barrier

Keeping joints narrow and full

For manufactured stone, the maker's instructions say joints should be as narrow as possible, averaging no more than half an inch, and filled completely with a grout bag where more mortar is needed. The setting bed should cover the scratch coat fully so no pockets form behind the stones.

Repairs that leave wide or half-filled joints stand out and let water in. We fill joints completely, match their width to the wall around them and tool them to the same profile.

Cut stone with fine joints

Cut or dressed stone has flat faces and square edges laid with narrow joints. The edges are the vulnerable part, since a slip of a grinder or chisel shows at once.

On cut stone, we remove mortar by hand wherever possible, work slowly at the edges and keep joints to their original width. Chipped edges from earlier work are noted in the findings, and badly damaged units are assessed for replacement.

Branches and stone chimneys

Branches that rub against a chimney scrape stone faces and joints each time the wind moves them, and leaves and twigs build up on caps and in gutters beside the chimney.

We point out limbs that touch or overhang the chimney during the inspection. Trimming is usually a separate trade. Removing the rubbing contact protects the repair we make.

Stone chimney checks for rental homes

For a landlord, a loose stone is a safety concern for tenants and a repair that only grows if left alone. A yearly check between tenants catches loose units, failing joints and water problems early.

We coordinate access with you or a manager and schedule around move-in dates. The written findings and estimate give you one document for your records, with each repair on its own line.