Chimney Repair in Allentown - You See the Footage Before You Get a Price

Trusted Chimney Repair for Allentown Homeowners

Chimney Repair in Allentown typically costs between $350 for minor mortar repointing and $4,500 or more for partial rebuilding, with most standard repairs falling in the $800-$2,200 range. Most jobs are completed in a single visit, and we always provide upfront pricing before any work begins. Call (610) 632-1394 to speak with a live person and schedule your free estimate.

Call (610) 632-1394

We’ve been repairing chimneys across the Lehigh Valley since 1984. Over 42 years, Russell Haines and our team have rebuilt crowns in West End Allentown, performed Mortar Repointing in the Historic District, and waterproofed spalling brick from Emmaus to Catasauqua. The freeze-thaw cycles here are brutal on masonry. Water seeps into hairline cracks, expands overnight when temperatures drop below 32 degrees, and by spring you’ve got crumbling brick and a leaking flue. We’ve seen it hundreds of times. We document every inspection with photos you can see and a plain-English verdict, so you know exactly what needs fixing now, what can wait, and what it will cost. No surprises on the bill. The 90-Day Done Right Promise backs every repair in writing, with no arguing and no paperwork to chase down.

What Our Chimney Repair Service Includes

Mortar Repointing

Mortar repointing is the process of grinding out deteriorated mortar between bricks and packing fresh, matched mortar into the joints. In Allentown’s older neighborhoods, particularly around the Historic District and Fountain Hill, we regularly find 80- to 100-year-old mortar that’s turned to sand. When mortar fails, water penetrates the wall, accelerates brick decay, and can destabilize the entire structure. We use professional-grade mortar mixes formulated for Allentown’s climate, color-matched to your existing joints so the repair blends cleanly. Most repointing jobs on a standard chimney run 4-6 hours and are completed in one day.

Spalling Brick Repair

Spalling occurs when water trapped inside bricks freezes and expands, causing the face of the brick to flake or pop off entirely. Allentown’s position in the Lehigh Valley means we get heavy spring rains followed by hard freezes, the exact conditions that cause spalling. In neighborhoods like West End and Hokendauqua, we’ve performed Spalling Brick Repair on entire courses of spalled brick on chimneys that went unaddressed for just two or three seasons. We source matching brick when possible, or recommend compatible replacements that maintain your home’s appearance. Every spalling repair includes assessment of the underlying moisture source, because replacing brick without stopping the water is a waste of your money.

Chimney Waterproofing

Waterproofing is the application of a vapor-permeable sealant that blocks liquid water from entering masonry while allowing trapped moisture to escape. We apply professional-grade waterproofing agents from brands like Gelco and Copperfield, formulated specifically for chimney masonry rather than generic concrete sealers that trap moisture and accelerate damage. In Allentown, where homes on slopes in Breinigsville and Macungie face wind-driven rain from multiple directions, proper waterproofing can add 15-20 years to a chimney’s service life. We typically recommend waterproofing after any repointing or spalling repair, or as preventive maintenance on chimneys showing early moisture intrusion but no structural damage yet.

Flashing Repair

Flashing is the sheet metal barrier where your chimney passes through the roof, the single most common leak point we find in Allentown homes. The combination of summer heat and winter ice here causes metal flashing to fatigue, separate from the chimney, or pull away from the roof deck. We see this constantly in older homes around Ancient Oaks and Coplay, where original flashing was often installed with inadequate overlap or incompatible metals that corrode at the joints. Our flashing repairs use industry-trusted materials from Olympia Chimney and Famco, with proper step-flashing integration, counterflashing embedment into mortar joints, and sealants rated for Pennsylvania’s temperature swings. We photograph the before condition and the completed repair so you can see the work.

Chimney Rebuilding

When damage extends beyond isolated mortar or brick failure to structural compromise, partial or full chimney rebuilding becomes necessary. In Allentown, we’ve rebuilt chimneys in Northampton and Hellertown that had settled off-plumb, suffered lightning strikes, or deteriorated from decades of deferred maintenance. Russell Haines oversees every rebuild personally, specifying the right brick, mortar, and liner system for the application. We use DuraFlex stainless steel liners in rebuilds where the original clay flue is unsalvageable, and we never recommend rebuilding without first showing you camera footage of the interior flue condition. A typical partial rebuild from the roofline up runs 2-3 days; full rebuilds including foundation work may take 4-5 days with proper curing time between stages.

Tuckpointing

Tuckpointing is a specialized form of repointing that creates the appearance of fine, narrow joints by applying two contrasting mortar colors, one matching the brick and one forming a thin visible line. It’s most common in Allentown’s historic districts and in homes where architectural detail matters. The technique requires steady handwork and an eye for color matching that comes only with experience. We’ve tuckpointed chimneys on century homes in Fountain Hill and the West End where the original craftwork had eroded but the brick remained sound. Because tuckpointing is labor-intensive and demands precision, we quote it separately from standard repointing and explain exactly where the technique adds value versus where standard joint repair is the practical choice.

Brands We Service for Chimney Repair

We work exclusively with professional-grade materials from manufacturers who back their products with real engineering data. DuraFlex stainless steel liners are our standard specification for relining jobs in Allentown, with their corrugated design allowing proper expansion and contraction through our freeze-thaw cycles without the seam failures we’ve seen in lesser products. We’ve installed hundreds of DuraFlex systems and stock the full range of diameters and connector fittings, so most relining jobs don’t wait on parts. HeatShield cerfractory flue resurfacing is another tool we use regularly, particularly in Allentown homes where the clay flue tile is cracked but structurally sound enough to accept a resurfacing coat rather than full liner replacement. We’ve been certified on HeatShield application since 2012 and warranty our resurfacing work alongside the manufacturer’s coverage.

Gelco chimney caps and waterproofing products have proven themselves in our market for decades, their powder-coated stainless standing up to the road salt and acid rain that drifts across the Lehigh Valley from I-78 and Route 22. Olympia Chimney supplies our flashing stock and specialty venting components, with consistent metal gauges that don’t deform during installation. Whether your chimney was originally built with these brands, has been repaired with competing products, or you’re not sure what’s up there now, we can assess it, source the right materials, and complete the repair without guesswork. We do not use builder-grade substitutes, period.

Signs You Need Chimney Repair Right Now

• White staining (efflorescence) on exterior brick means water is moving through your masonry and depositing salts as it evaporates. In Allentown, we see this most on north-facing chimneys that don’t dry quickly after rain. It’s not just cosmetic, it’s evidence of active moisture penetration that will eventually cause spalling, mortar failure, and interior damage.
• Cracked or missing mortar joints create direct pathways for water and compromise the structural integrity of the chimney wall. We find this constantly on homes in Catasauqua and Coplay built before 1960, where original lime mortar has simply reached end of life. Once joints are open, deterioration accelerates exponentially.
• Brick faces flaking or popping off is spalling in progress, and it means water has already penetrated the brick body and begun destroying it from within. Allentown’s spring freeze-thaw cycles turn minor moisture intrusion into major brick loss in a single season. This repair cannot wait until next year.
• Rust stains on the chimney exterior or in the firebox indicate that metal components, usually the damper or a failing liner, are corroding due to moisture. The rust itself is a symptom, the underlying moisture problem is the disease, and both need addressing before the metal fails completely and allows combustion gases into your living space.
• Water leaking into your fireplace or staining nearby walls and ceilings means the chimney’s protective systems, flashing, crown, cap, or mortar, have failed. In Allentown’s older housing stock, particularly in West End and Fountain Hill, we’ve traced leaks to multiple concurrent failures that a simple patch won’t fix. Camera inspection finds the real source so we don’t treat symptoms while the cause continues.

Our Chimney Repair Process - Step by Step

1. 1
   Schedule your free estimate. Call (610) 632-1394 and a live person will answer, 24 hours a day, every day. We’ll ask about your symptoms, your chimney’s age if you know it, and find a time that works. Most Allentown appointments are available within 3-5 business days, sooner for active leaks.
2. 2
   Level-2 camera inspection and documentation. Our technician arrives in uniform, background-checked, with a photo ID. We set up our camera system and run a full interior flue inspection, photographing every surface. You’ll see what we see, cracks, gaps, creosote buildup, or liner damage, displayed on a monitor in real time. We photograph the exterior masonry, crown, cap, and flashing from roof level.
3. 3
   Plain-English verdict and upfront pricing. Russell Haines or a senior technician reviews the findings with you on site or by phone if you prefer. We explain what’s wrong, what caused it, what happens if it’s not addressed, and exactly what the repair entails. The price we quote is the price on the invoice. No surprises.
4. 4
   Professional repair with documented materials. We complete most repairs in a single visit using the professional-grade brands specified in your estimate, DuraFlex, HeatShield, Gelco, Olympia Chimney, Famco, or Copperfield as appropriate. We photograph the completed work and provide a written summary of what was done and what materials were used.
5. 5
   Written warranty and follow-up. Every repair is covered by our 90-Day Done Right Promise, in writing, with no arguing. If something isn’t right, we come back and make it right. We also note any recommended future maintenance, such as waterproofing reapplication intervals or sweep scheduling, so you can plan ahead.

How Much Does Chimney Repair Cost in Allentown?

Chimney Repair Near Allentown - Our Service Area

We repair chimneys throughout the greater Lehigh Valley, from our base in Allentown west to Chimney Repair in Emmaus and Macungie, north to Catasauqua and Northampton, east to Chimney Repair in Fullerton and Ancient Oaks, and south to Hellertown and the Saucon Valley. Most Allentown-area appointments are scheduled within 3-5 business days. For homeowners in Breinigsville, Coplay, or Hokendauqua, we’re typically there within the same week. If you’re unsure whether we cover your address, call (610) 632-1394 and we’ll confirm immediately.

Frequently Asked Questions - Chimney Repair in Allentown

Schedule Your Chimney Repair Service in Allentown Today

Call (610) 632-1394 now and a live person will answer, any hour of any day. We’ll schedule your free estimate, conduct a full camera inspection with photos you can see, and give you upfront pricing before any work begins. The 90-Day Done Right Promise covers every repair in writing. No surprises on the bill. Done right, and we stand behind it.

Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Allentown and the Lehigh Valley since 1984.