CA Lic #947534 (C-39)ActiveGAF Master Commercial • BBB Accredited100% In-House Crews
24/7 High-Desert & SoCal Dispatch: (661) 498-7663
APR Roofing Solutions Logo
APR ROOFINGSOLUTIONS • CSLB #947534
HomeServicesChimney Flashing, Skylight & HVAC Curb Leak Repair
85% of Roof Leaks Start at Penetrations • $99 Thermal Scan Waived w/ Fix

Chimney Flashing, Skylight & Roof Penetration Leak Repair. Permanent Sheet Metal Counterflashing

Stop recurring ceiling stains around masonry/stucco chimneys, rooftop package HVAC curbs, skylights, and plumbing stacks with custom-bent 26-gauge step flashing, reglet-cut counterflashing, and welded crickets.

5.0 (150+ Reviews)
CSLB #947534 (Class C-39)
APR Leak Forensics & Sheet Metal Shop
Chimney Flashing, Skylight & HVAC Curb Leak Repair
Verified APR Project
Direct Dispatch Hub

APR Leak Forensics & Sheet Metal Shop

1111 W. Ave L-12 Suite B, Lancaster, CA 93534

Emergency Leak Service:24/7 Standby
Inspection Turnaround:Same-Day / 2 Hours
Service Area:Lancaster, Palmdale, Quartz Hill +
Voucher Code:APRROOF250 ($250 Off)
Speak With Local Estimator

Why Is Water Leaking Around My Chimney or Rooftop HVAC Unit, and How Much Does a Permanent Fix Cost?

Over 85% of active residential and commercial roof leaks occur not in the middle of shingles or tiles, but where vertical penetrations—chimneys, skylights, stucco parapet walls, and rooftop HVAC curbs—intersect the roof plane and expand at different thermal rates. Smearing black plastic roofing cement ("mastic") over old flashing cracks again within 12 months. APR Roofing Solutions (CSLB #947534) permanently eliminates chimney, skylight, and HVAC curb leaks for $450 to $1,850 by tearing back surrounding tile/shingles, installing 40-mil high-temp ice-and-water membrane, weaving 26-gauge galvanized step flashing course-by-course, and diamond-cutting reglet counterflashing or framing an upslope saddle cricket.
Why Previous Handyman Caulking Failed After One Storm
Brick, stucco, metal, and asphalt expand at wildly different speeds between 110°F afternoons and 35°F rainy nights. Only two-piece overlapping step + counterflashing allows the roof deck to move independently without tearing open the waterproof seal.
Itemized Market Rates

Upfront 2026 Cost Guide. Transparent Southern California Pricing.

Clear, transparent pricing based on real Southern California jobs with zero hidden contractor trip fees or surprise change orders.

Same-Day100% In-House Crew

Plumbing Pipe Boot & Vent Collar Rebuild

Estimated Market Rate:$350 – $650

Replacing UV-cracked neoprene pipe boots with lifetime lead or heavy-gauge storm collars woven into high-temp SBS underlayment.

1 Business Day100% In-House Crew

Chimney Step & Reglet Counterflashing Rebuild

Estimated Market Rate:$650 – $1,650

Removal of cracked mastic, new 40-mil SBS ice/water barrier, woven L-step flashings, and mortar/stucco-embedded 26-ga counterflashing.

1 – 2 Days100% In-House Crew

Upslope Chimney Cricket (Saddle) Framing

Estimated Market Rate:$1,250 – $2,450

Code-compliant pitched wood/metal diverter framed behind wide chimneys (>30") to stop storm runoff from damming against the back wall.

1 Business Day100% In-House Crew

Skylight Curb & Rooftop Swamp/HVAC Sealing

Estimated Market Rate:$550 – $1,850

Re-flashing leaking residential skylights, evaporative cooler ("swamp cooler") legs, and commercial package AC curbs/pitch pockets.

*Final investment determined by exact roof pitch, square footage, wood rot damage, and material grade. Apply code APRROOF250 for $250 off any complete tear-off or re-roof.

Exclusive Online Offer
Average Response: < 15 Minutes

Request Your Free Drone Diagnostic & Written Estimate

Get an exact, itemized scope for Chimney Flashing, Skylight & HVAC Curb Leak Repair. We check decking, valleys, flashings, and high-wind fastening with zero obligation. Includes voucher for $250 OFF complete replacements.

🔒 Property Owner Direct Line: This portal is strictly for roofing client inspection requests and contractor quotes. Commercial marketing pitches, SEO proposals, offshore vendor emails, and spam bots are blocked and discarded.
100% Confidential • Zero Spam CSLB #947534 Licensed & Bonded 100% In-House Trained Technicians
Engineering Rigor

Engineering Standards. Built for High Desert & Coastal Climates.

Why homeowners and facility managers trust APR Roofing over production volume roofers.

Custom 26-Gauge Sheet Metal Fabrication

We bend custom step flashings, Z-bar stucco weep screeds, chimney pans, and saddle crickets rather than forcing ill-fitting big-box parts.

Code-Required Chimney Cricket Framing

California Residential Code requires a cricket behind any chimney wider than 30 inches—eliminating the #1 cause of heavy-rain chimney leaks.

FLIR Thermal & Hose Isolation Testing

We distinguish true roof flashing leaks from porous chimney crown/brick spalling or HVAC condensate pan overflows before quoting.

$99 Diagnostic Fee 100% Credited

Every leak call starts with a thorough attic and rooftop forensic inspection credited in full toward your permanent repair.

Certified Building Code & Manufacturer Compliance
California Residential Code R903.2 / R905.2.8.3 chimney cricket requirement for penetrations > 30 inches wide
26-gauge G90 galvanized or pre-painted architectural sheet metal two-piece step and reglet counterflashing
40-mil ASTM D1970 high-temperature self-sealing SBS ice-and-water membrane around all 4 curb walls
Polyurethane ASTM C920 architectural sealant in reglet joints—zero brittle surface asphalt mastic band-aids
Systematic Execution

Our 4-Step Protocol. From Thermal Drone to Final Sign-Off.

Here is how our master in-house crew executes your project with zero guesswork.

1

Attic & FLIR Moisture Path Tracing

We inspect inside the attic and scan the chimney/curb perimeter to verify whether water enters at the crown, stucco wall, or base step flashing.

2

Perimeter Tile/Shingle Lift & Rot Check

We carefully remove 24–36 inches of surrounding tiles or shingles and replace any water-stained OSB/CDX plywood decking.

3

Self-Adhered Ice/Water + Two-Piece Metal Flashing

We wrap the curb base in 240°F high-temp SBS membrane, weave individual step flashings, and anchor reglet-cut metal counterflashing.

4

Simulated Rain Water-Test & Written Warranty

We reinstall matching shingles or tiles, perform a controlled water test on the repaired penetration, and back our work in writing.

Local Operational Presence

Serving Lancaster, CA & Surrounding Communities

Our trucks carry high-resolution aerial thermal drones, heavy-duty tarps, matching shingle bundles, and commercial TPO hot-air seam welders ready for rapid deployment.

Address: 1111 W. Ave L-12 Suite B, Lancaster, CA 93534
Telephone: (661) 498-7663
License: CSLB #947534 (Roofing Class C-39)
Call Local Office

Service Area Cities & Neighborhoods:

LancasterPalmdaleQuartz HillSanta ClaritaMonroviaPasadenaGardenaTorrance
Need service outside these zones? Call our dispatch desk at (661) 498-7663 for priority scheduling.
Verified Southern California Jobsite Photos

Real Craftsmanship. On Real Southern California Roofs.

No stock photos or generic 3D renderings. Here is our actual in-house team executing this exact service.

130 MPH Ridge Caps
130 MPH Ridge Caps

Precision-aligned high-profile SBS ridge caps with ring-shank fasteners

Solar Vent & Cool Shingles
Solar Vent & Cool Shingles

Title 24 cool shingles, solar attic dome, and sealed plumbing pipe boots

GAF Staging & Drip Edge
GAF Staging & Drip Edge

Full roof prep with perimeter metal drip edge and staged GAF Timberline shingles

Architectural Shake Accent
Architectural Shake Accent

Multi-layer designer shake with valley flashing and ornamental hummingbird weathervane

Clear Answers & Truth

Frequently Asked Questions. Response Times, Insurance & Warranties.

How can I tell if water coming down my fireplace is a chimney cap issue or a roof flashing leak?

If water drips directly inside the firebox onto the hearth grates during vertical rain, the culprit is usually a missing/rusted chimney chase cover or cracked mortar crown. If water stains appear on the drywall ceiling or wall surrounding the chimney breast, the leak is almost always failed roof-to-chimney step flashing, stucco counterflashing, or a missing upslope cricket. APR Roofing inspects and repairs both.

Can you fix a chimney leak on a Spanish clay or concrete tile roof without breaking the tiles?

Yes. Our tile specialists carefully unfasten and stack the surrounding clay or concrete tiles, rebuild the underlying SBS membrane, pan metal, and chimney counterflashing, and reset your original tiles (or source matching profiles from local boneyards if any cracked previously).

Do you repair leaks around rooftop swamp coolers and commercial AC package units?

Absolutely. Evaporative coolers in Lancaster/Palmdale and rooftop HVAC curbs on commercial buildings are notorious leak points. We rebuild wooden equipment curbs, replace rusted jack flashings, and hot-air weld TPO boots or SBS curb wraps.

From The Desert Dispatch • Technical Research

Antelope Valley High-Wind Storm Defense: The 130 MPH 6-Nail Fastening Protocol

Why standard 4-nail shingle jobs peel in Lancaster wind shears, and how 6-nail hurricane fastening protects your home.

Read Article

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Title 24 Cool Roof & Silicone Coating Restoration

Direct Engineering Answer: Chimney Flashing & Roof Leak Repair [$450+]

APR Roofing Solutions (operated by Canaj Inc., California C-39 Roofing Contractor License CSLB #947534) executes code-compliant residential and commercial roofing across Lancaster, Palmdale, Quartz Hill, Santa Clarita, Monrovia, South Monrovia Island, Valinda, and Gardena using 100% in-house W-2 crews, ASTM Class F 130 MPH 6-nail wind fastening, dual-layer 240°F SBS tile underlayment, and GAF Master Commercial robotic TPO welding. Call (661) 498-7663 for a complimentary 21-point thermal drone inspection or $99 rapid emergency leak diagnostic (waived with repair).

  • Verified State Licensing: Active California CSLB #947534 (Class C-39), $2M General Liability & full W-2 Workers’ Compensation.
  • High-Wind & Thermal Spec: 6-nail ring-shank fastening (130 MPH ASTM D3161 Class F) & dual-layer 240°F SBS modified bitumen underlayment.
  • Dual Local Dispatch Yards: 1111 W. Ave L-12 Suite B, Lancaster, CA 93534 & 1109 W. 190th St. Unit G, Gardena, CA 90248.
  • Flexible $0 Down Financing: 0% promotional APR plans & monthly installments starting at $99/mo via 60-second soft credit check.

High Desert Climate Zone 14 Wind & Thermal Protocol

Antelope Valley roofs in Lancaster (93534, 93535, 93536), Palmdale (93550, 93551, 93552), and Quartz Hill face afternoon katabatic wind gusts exceeding 65 to 85 MPH alongside summer deck temperatures reaching 165°F. Standard 4-nail builder-grade shingles suffer rapid sealant fatigue, nail pull-through, and blow-offs within 7 to 10 years. APR Roofing Solutions eliminates wind uplift by enforcing a strict 6-nail fastening schedule into solid 1/2-inch CDX or OSB structural sheathing, paired with high-viscosity SBS-modified asphalt starter strips at all eaves and rakes, breathable synthetic polyolefin underlayment, and California Title 24 Cool Roof Rating Council (CRRC) reflective granules.

Spanish Tile Lift & Reset vs. Full Tear-Off

Concrete S-tile and two-piece clay Mission tile roofs in West Palmdale, Rancho Vista, Ana Verde, Santa Clarita, and Monrovia carry a 50-to-75-year structural shell lifespan, but the builder-installed single-ply 30-pound organic felt beneath them desiccates and cracks after 18 to 22 years. Our specialized Tile Lift & Reset procedure systematically stacks and preserves up to 95% of your existing tiles, replaces rotted wood fascia and sheathing, installs dual-layer 40-mil high-temperature (240°F) self-adhering SBS elastomeric membrane, upgrades valleys to 26-gauge Kynar-coated metal or copper W-valleys with weep baffles, and re-fastens tiles with corrosion-resistant stainless or hot-dipped galvanized screws—saving homeowners 35% to 45% compared to full tile replacement.

GAF Master Commercial TPO & Low-Slope Membranes

For retail plazas, medical buildings, warehouses, residential low-slope transitions, and HOA multi-family complexes across Palmdale, Santa Clarita, South Monrovia Island, Gardena, Torrance, and Carson, ponding water and HVAC curb leaks are the leading causes of interior drywall damage. As a certified GAF Master Commercial Roofing Contractor, our in-house commercial division installs 60-mil and 80-mil single-ply TPO membranes over tapered polyiso rigid insulation boards (R-20 to R-30). Every lap seam is fused using automated robotic Leister hot-air welders at 1,000°F to create a monolithic bond that reflects up to 87% of solar UV radiation and qualifies for 20-to-30-year No-Dollar-Limit (NDL) manufacturer warranties.

2026 APR Roofing System Engineering, Wind Rating & Lifespan Matrix (CSLB #947534)

Roofing System Architecture Underlayment & Fastening Spec ASTM Wind / Fire Rating Expected Lifespan 2026 Installed Range
High-Wind Architectural Cool Shingles Synthetic Deck Armor + 6-Nail High-Wind Schedule + Ice & Water Eaves ASTM D3161 Class F (130 MPH) / Class A Fire / Title 24 CRRC 30–50 Years $5.25 – $7.85 / sq. ft.
Spanish Clay / Concrete Tile Lift & Reset Dual-Layer 40-mil SBS Self-Adhering 240°F Membrane + 26-Ga Ribbed Valleys 110–130 MPH Hurricane Clip / Class A Fire 30–40 Years (Underlayment) $4.50 – $7.50 / sq. ft.
Low-Slope Patio & Residential SBS / TPO 36-Inch Upslope Tie-In + Multi-Ply Self-Adhered SBS or 60-Mil Cool TPO CRC R905 Low-Slope Compliant / Class A Fire 20–30 Years $4.50 – $9.75 / sq. ft.
Commercial 60-Mil / 80-Mil Single-Ply TPO Tapered Polyiso Insulation + Mechanically Attached / Adhered + 1,000°F Robotic Welds FM Approved High-Wind Uplift / Title 24 Cool Roof (0.83 SRI) 25–30 Years $6.50 – $11.50 / sq. ft.
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