the Hamptons
Repointing, chimneys, steps and stoops: masonry repair and restoration in the Hamptons
Repointing brick averages $14–15 per square foot ($4–25 range), a stone foundation $5–28, and chimney tuckpointing $10–25 per square foot of joint (about $600–1,200 for a typical stack); a chimney crown repair is $300–2,200, a rebuild of the top 3–5 feet $1,500–3,500, and sources disagree on a full rebuild above the roofline ($4,000–8,000 versus $11,800–20,200). Bluestone steps run $900–2,000 for a typical staircase and a stoop rebuild $1,500–4,000. On pre-1900 brick in Sag Harbor or Southampton the mortar must be softer than the brick (Type O, 350 psi), never Portland-hard; done right, repointing lasts 30–100 years.
Last updated · Reviewed by Sag Harbor Masonry Co.
What fails, and why
Water, frost and the wrong mortar. Water gets into a joint, freezes, and pushes the mortar out; salt air speeds it; a chimney crown cracks and lets water down the stack; a stoop settles because the base under it was never compacted. On the old brick houses of Sag Harbor, Southampton and East Hampton villages there is a fourth cause: a previous repointing in hard Portland-cement mortar, which is stronger than 19th-century brick. The brick then does the moving the mortar refuses to do, and its face spalls off.
What it costs (2026, national)
| Repair | Cost |
|---|---|
| Repointing brick | $14–15 per sq ft average; $4–25 range |
| Repointing a stone foundation | $5–28 per sq ft |
| Chimney tuckpointing | $10–25 per sq ft of joint; a typical stack has 40–60 sq ft of exposed joint, so about $600–1,200 |
| Chimney crown | Repair $300–2,200; replacement up to $3,000 |
| Chimney rebuild, top 3–5 feet | $1,500–3,500 |
| Chimney full rebuild above the roofline | $4,000–8,000 by one source; $11,800–20,200 by another; we print both rather than average them |
| Stainless flue liner | $47–80 per linear foot; $1,500–7,000 for a full replacement |
| Bluestone steps | Treads $15–30 per linear foot in material (about $18 a tread), plus $500–1,200 labor; a typical staircase $900–2,000 |
| Stoop rebuild | New treads $140–350 a step plus labor; a full short run $1,500–4,000; a 7–8 step project commonly $1,100–2,900 |
The mortar question
The National Park Service's Preservation Brief 2, the standard for historic masonry, is blunt: repointing mortar should match or be softer than the surrounding masonry, because hard mortar traps moisture and destroys soft brick. ASTM C270 grades mortar by compressive strength: Type M 2,500 psi, S 1,800, N 750, O 350, K 75. Modern brick takes N or S; a pre-1900 house wants Type O, lime-rich and forgiving, sometimes softer. A mason who quotes "we use S on everything" is the wrong mason for a whaling captain's house. Done correctly, a repointing job lasts 30–100 years.
The same logic governs sealers: a film-forming sealer on old brick traps water behind the face and spalls it in winter; a penetrating silane or siloxane sealer, if any, is the only kind to use.
Chimneys
Start at the top. The crown (the mortar or concrete cap over the stack) cracks first and lets water in; a repair is $300–2,200. Tuckpointing the exposed joints is 8–20 hours of work. A rebuild of the top 3–5 feet, where freeze-thaw does the most damage, is $1,500–3,500; a full rebuild above the roofline takes a mason 5–10 days and is the one item where our sources disagree by a factor of two, so get more than one quote. If the flue is unlined or the clay tiles are cracked, a stainless liner runs $47–80 per linear foot.
Steps and stoops
Bluestone treads on a masonry base are the Hamptons front step. When the base fails the stoop tilts; when a tread cracks it is replaced ($140–350 a step, plus labor). A full rebuild of a short run is $1,500–4,000, and it should start with a compacted base below the frost depth the town requires, which is the part the last mason skipped.
Historic districts
In the Sag Harbor historic district, exterior changes visible from a street or neighbor need a Certificate of Appropriateness before a permit issues, and the review board's scope names sidewalks, stoops' terraces, retaining walls and curbing among "similar features." Like-for-like repointing that changes nothing visible is a different case from rebuilding a front stoop in a new stone; ask the building department which yours is. The Village of East Hampton's Design Review Board covers its four historic districts, and the Village of Southampton's review board covers structures.
Season
Mortar cannot cure in the cold: the masonry standards trigger cold-weather rules when the air or the brick drops below 40°F (heated water and sand, units above 20°F, the work protected above 32°F for 24–48 hours). Spring and fall are the seasons for repointing and chimney work; the villages restrict summer work hours; winter is for planning and for the stoop's dry-set base.
FAQ
Common questions
When is the best time of year for masonry work in the Hamptons?
Spring and early fall. The ground is workable, the temperatures suit curing, and crews are not yet booked by June. Summer works but the villages restrict hours: East Hampton Village allows weekdays 8am–6pm and Saturdays noon–4pm from May 15 to September 15, no Sundays; Southampton Village weekdays 8am–6pm and Saturdays 9am–5pm, no Sundays (a Saturday ban was proposed in July 2026); Sag Harbor weekdays 8am–7pm and Saturdays 9am–5pm; Sagaponack 7am–7pm, no Sundays. Mortar work stops when the air or the stone drops below 40°F unless materials are heated and the work is protected for 24–48 hours, so mortared walls, repointing and chimneys are April-to-November jobs; dry-set patios and dry-stacked walls can go on in winter when the ground is not frozen. Permits set the real calendar: 2–4 weeks in East Hampton Village, a reported 16–20 weeks in the Town.
How does Sag Harbor Masonry Co. work, and what does it cost me?
It costs homeowners nothing. You tell us about the project once, roughly sixty seconds: where the house is, what you want built or fixed, and when you want it done. We put you in touch with one licensed, insured mason who works your town and is right for the material and the job, and they call you within one business day to look at it and quote it directly. We are a Hamptons-only referral service, not a masonry contractor, and we are not connected to any stone yard or stone-veneer product of a similar name: one mason, and nobody else gets your number. Participating masons pay us a referral fee.
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