NYLMB · IICRC · Since 2012
(631) 625-8807
Long Island Mold Co. logo

Islip · ZIP 11751

Mold remediation in Islip, NY.

Mix of old and new — from century farmhouses to new construction defects.

We run Islip jobs out of our Bethpage HQ — Suffolk County rotation, IICRC S520 protocol, NY Article 32 compliance on every job. Free inspection, free written scope, insurance-friendly reporting.

NYLMB MA00534 · MR00612 · IICRC S520 · Same-week scheduling

We call within 1 business hour. NYLMB-licensed · IICRC certified · Insurance-friendly.

NYLMB Licensed · MA00534 / MR00612
IICRC CMR & AMRT Certified
4.9★ · 187+ Google Reviews
EPA RRP Lead-Safe
Since 2012 · 2,800+ Homes

Local context

The mold patterns we see most in Islip

Mix of old and new — from century farmhouses to new construction defects. The specifics vary house to house, but the underlying pattern across Islip is consistent — chronic moisture driven by age, weather exposure, or construction era. Our intake inspection identifies the water source first. Remediation without that fix is a reset, not a cure.

Attic sheathing mold

Under-vented roofs + blocked soffits = winter condensation. Most Islip homes built pre-1980 need baffles + ridge-vent retrofits, not just wood treatment.

Basement & crawl-space moisture

Older foundations in Islip rarely have modern vapor barriers. We install 10-mil reinforced liners, treat joists, and add dedicated dehumidification.

Hidden-wall & bathroom mold

Pinhole leaks in supply lines seed wall-cavity mold for years before it shows. Thermal imaging + moisture meter are standard on every Islip inspection.

NY Article 32

Separate licensees for inspection and remediation.

On any Islip job over 10 sqft, NY law requires an independent mold assessor to write the work scope before a remediator touches the property. We offer both services — but not on the same job at the same address. Clients pick one or the other from us.

Read the full Article 32 rule

Services in Islip

All 11 services available here

Mold Remediation

Mold Remediation

Full IICRC S520 remediation — containment, HEPA filtration, removal, and clearance. Our core service. Long Island's housing stock — 1950s–70s construction with limited vapor barriers, poor attic ventilation, and South Shore flood exposure — creates persistent mold conditions that require professional remediation, not surface cleaning. We follow Category 3 containment protocol on every job: negative-air machines with HEPA filtration, zipper-door decontamination chambers, full PPE, and independent post-remediation verification (PRV) clearance before we close out. South Shore towns like Freeport, Merrick, and Valley Stream carry elevated mold risk from storm surge flooding. Nassau County Health Dept guidelines for mold remediation in occupied buildings require written scope, proper containment, and clearance testing on jobs over 10 sqft — we document every step for insurance and compliance purposes. Most residential remediation projects in Nassau and Suffolk run $2,000–$8,000. Post-flood jobs in South Shore towns can run $3,000–$12,000 depending on scope.

Black Mold RemovalEmergency

Black Mold Removal

Emergency Stachybotrys removal with negative-air containment, respirator-grade crew, and PRV clearance testing.

Attic Mold Removal

Attic Mold Removal

The #1 mold problem in Long Island homes — sheathing mold from blocked bath fans and under-vented roofs. We treat the wood and fix the ventilation.

Basement Mold Removal

Basement Mold Removal

From crawl-space dampness to finished-basement flood damage. South Shore specialty — Sandy legacy and nor'easter water events.

Crawl Space Mold Remediation

Crawl Space Mold Remediation

Vapor barriers, joist treatment, dehumidification — the three-step fix for chronic crawl-space mold in older LI homes.

Bathroom Mold Removal

Bathroom Mold Removal

Hidden behind tile, under vanities, and inside wall cavities — most bathroom mold comes from pinhole leaks that have been wet for years.

Live Field Log

Recent jobs near Islip

Real jobs. Real towns. Actual scope and scale from our last 90 days of field work.

Crawl Space Mold in CommackCrawl Space Mold
Commack, Suffolk County Mar 12

1962 ranch crawl space, 900 sqft. Dirt floor + no vapor barrier = chronic humidity. Installed 10-mil reinforced vapor liner, treated joists, added dedicated dehu.

Mold Testing in HuntingtonMold Testing
Huntington, Suffolk County Mar 5

Indoor air quality panel — child with asthma. Lab results: elevated Pen/Asp in child's bedroom. Traced to hidden wall leak. Referred to plumber, retested clean.

Bathroom Mold Removal in Bay ShoreBathroom Mold Removal
Bay Shore, Suffolk County Feb 24

Master bath — mold behind vanity and under tub. Removed, treated framing, installed closed-cell foam, new cement board. Homeowner insurance covered 80%.

Commercial Mold Remediation in HauppaugeCommercial Mold Remediation
Hauppauge, Suffolk County Feb 15

Office suite HVAC-driven mold in ceiling plenum after rooftop unit leak. After-hours containment, HEPA scrub, ceiling tile replacement, tenant back in business Monday.

Flood Mold Remediation in BabylonFlood Mold Remediation
Babylon, Suffolk County Feb 7

South Shore home, January nor'easter flood. Full-basement Category 3 water. Demo, HEPA, structural drying, PRV before rebuild.

Attic Mold Remediation in SmithtownAttic Mold Remediation
Smithtown, Suffolk County Jan 28

Colonial attic — white surface mold + dark spots on north-slope sheathing. Poor soffit ventilation. Treated wood, installed baffles, added roof vents.

Black Mold Removal in IslipBlack Mold Removal
Islip, Suffolk County Dec 20

Ceiling Stachybotrys from second-floor shower leak. Two-room containment, surgical demo, antimicrobial, new drywall install.

Crawl Space Mold in PatchogueCrawl Space Mold
Patchogue, Suffolk County Dec 11

1950 bungalow crawl, standing water. Pumped out, spray-foam rim joists, treated joists, vapor liner. Stabilized humidity at 52%.

Islip FAQs

Questions we get from Islip homeowners

Most Islip jobs get on the schedule inside 2–3 business days. Emergencies (Category 3 water, heavy visible mold, occupant health issues) get same-day or next-morning response from our Bethpage shop.
Yes. Angela on our team handles insurance documentation for every Suffolk County job — moisture readings, cause-of-loss narrative, sqft calcs, before/after photos, and clearance documentation formatted the way adjusters need it.
Under NY Article 32, no. New York prohibits the same licensee from performing both the assessment and the remediation on the same property. We operate a walled inspection arm and a separate remediation arm — clients pick one or the other per job, never both from us at the same address.
Yes. Long Island's humid summers plus undersized or blocked attic ventilation is the #1 cause of sheathing mold we see across Suffolk County. Most Islip homes built before 1980 need a ventilation fix as part of remediation — not just treatment.
Mold remediation in Islip typically runs $1,500–$6,000 for a residential basement or attic job. Crawl-space remediation with vapor barrier installation runs $3,000–$8,000 depending on square footage. Post-flood Category 3 water protocol jobs run $3,000–$12,000. Small contained jobs (single bathroom, under-sink area, less than 30 sqft) run $500–$1,500. We provide a fixed written quote after the free inspection — no surprises mid-job.
A small contained job in Islip typically takes 1 day on-site. A full basement or attic remediation runs 2–5 days. Post-flood jobs with Category 3 protocol run 3–10 days including structural drying. Post-remediation verification (PRV) clearance testing adds 1–2 days for lab turnaround. We give you a timeline in writing before we start.
Standard NY homeowners policies cover mold when it results from a sudden and accidental covered water loss — a burst pipe, appliance line failure, or sudden roof breach. They exclude mold from long-term humidity, deferred maintenance, or exterior flooding. Most policies cap mold coverage at $5,000–$10,000 per occurrence. We document the cause of loss on every Islip job in the format adjusters require, and our documentation has a strong track record of approval on covered claims.

Ready to breathe easier?

Same-week scheduling. Crew on-site in days, not weeks.

Free visual inspection, same-day estimate. Licensed assessor handles the test separately from remediation — NY Article 32 compliant from the first call.

Mon–Sun 7am–8pm · 24/7 emergency line

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