Your stone chimney, repaired and repointed in The Willows

White bloom on stone veneer

Efflorescence is a water-soluble deposit left on masonry as water evaporates from the wall. For manufactured stone, one maker advises letting the stone dry thoroughly, then scrubbing with a stiff bristle brush and clean water, and for stubborn cases a solution of one part white household vinegar to five parts water, rinsed thoroughly.

Cleaning treats the symptom. The water that carried the deposits out is the real finding, and we trace it to the cap, the flashing or the base before calling the job done.

Gutters, kick-outs and runoff

Where a roof edge, a gutter or a downspout sends water against a chimney, the stone takes a steady soaking. The maker's instructions warn that incorrect or missing flashing, kick-out flashing, gutters and downspouts can divert runoff onto finished surfaces and cause staining.

We note where water lands on the stone during the inspection. The fix is often outside the stone work, such as a kick-out flashing or a gutter adjustment, and we list it separately so you can decide.

What a stone chimney estimate lists

A clear stone estimate separates the work so you can see and approve each part. Ours list the stones to reset or replace, the joints to repoint and how deep, the mortar type and how it will be matched, and any access equipment.

Cap, crown, flashing, drainage and flue items sit on their own lines beside the stone work. Each has its own price, and the total does not change later without your approval.

• Stones to reset or replace
• Joints to repoint and depth
• Mortar type and color match
• Access and site protection
• Related items on their own lines

What we look at on a stone chimney

We start at ground level with the whole chimney, the base, the screed and clearance on veneer and the runoff around it. From the roof, where access is safe, we check the cap, the upper stones, the joints and the flashing.

Stones within reach are tapped for hollow spots. Stains, white deposits, flaking and earlier patches are noted. Nothing is taken apart at this stage, and the written estimate follows from what we find.

Cutting stone safely around your home

Cutting and grinding stone raises fine dust. One maker's instructions caution that dust from cutting its product contains crystalline silica and call for eye protection and a properly fitted respirator when cutting.

We cut outdoors, away from open windows and doors, with wet cutting or dust collection where practical, and keep children and pets well away from the cutting area. Dust is cleaned from walkways and surfaces before we leave.