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Find Mold & toxic material testers in Warren

Avatar for A Graf & Son LLC
A Graf & Son LLC
5.0(
114
)

Serving Warren, NJ and surrounding areas

In business since 2009

Free estimates

"Aaron and his crew were great. Bought a house with an undisclosed water issue. He understood my frustrations, did the planning for the repair and executed in a timely manner. Was always available to call, discuss, explain and was very helpful along the way. Hope I never have the issue in another house but would call if need be!"
Basement Waterproofing Project
Basement Waterproofing Project
Basement Waterproofing Project
Basement Waterproofing Project
Basement Waterproofing Project

+36

Recommended by100%of homeowners
Avatar for Gr Tech LLC
Gr Tech LLC
5.0(
178
)

Serving Warren, NJ and surrounding areas

In business since 1995

Free estimates

Emergency services offered

"Gregor was on time and efficient. They finished two rooms and an entire basement in a single day. My only complaint is the seal they put down was so thin it has already mostly worn away."
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Recommended by97%of homeowners
Avatar for NJ Water and Mold, LLC.
NJ Water and Mold, LLC.
5.0(
107
)

Serving Warren, NJ and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"Dennis and Ada and their entire team at NJ Water and Mold are A+++ Professionals. We suffered a catastrophic water heater failure that resulted in significant damage to our home. Stressed, I called Dennis. He calmly walked me through the remediation and repair process and advised me that he could send his team to our home to begin work within the hour. Dennis is a man of his word! His team came to our house promptly and they worked diligently to mitigate the damages. Dennis and his team were exceptional. Dennis advised me what his team would do to remediate and repair our home, and Dennis' team did exactly what he said they would do--and they did it in a timely, courteous and highly professional manner. Additionally, Dennis worked directly with our insurance company. He promptly documented all the work performed, and prepared a comprehensive estimate of the needed repairs. We are so very grateful to Dennis and Ada and to their team! Overall, they were extremely courteous, highly professional, and they did a masterful job! If you ever suffer a water damage event, call Dennis and Ada at NJ Water and Mold. They are truly exceptional!"
Additional Photos
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Additional Photos

+3

Recommended by99%of homeowners
Avatar for DIR Home Inspection & Consulting
DIR Home Inspection & Consulting
4.9(
215
)

Serving Warren, NJ and surrounding areas

In business since 1996

Free estimates

Emergency services offered

"Got a call right away when I asked for a quote. Very responsive, arrived on time and was flexible with scheduling. We really got good pictures and a very good idea of what was so. He had very good knowledge of the mechanics, history and utilities. Report was very thorough, easy for the layman to understand and explanations were super helpful! This is a good company. regards, Sean Loves Dominga"
Before
During
After
Recommended by93%of homeowners
Avatar for atticrawl
atticrawl
4.9(
167
)

Serving Warren, NJ and surrounding areas

In business since 2015

Free estimates

Emergency services offered

"Basit came to our home and explained the process in detail. His team was at our home within the hour. They taped everything well to avoid dust and contamination. They bagged and removed all the old insulation, sanitize the attic, and rodent proof the home from outside and inside. They were very professional & easy to work with."
Brand New Roof Install with Atticrawl!
Attic Insulation
Crawlspace Insulation Installation
Rodent Proofing Attic Fan
Crawlspace Encapsulation

+34

Recommended by97%of homeowners
Steri-Clean Northern New Jersey
5.0(
32
)

Serving Warren, NJ and surrounding areas

Emergency services offered

"Jim, Eileen & team were incredible! We had a biohazard (previous rodent infestation) that needed cleaning along with the clutter that had accumulated. These folks hit the ground running and were incredibly hard working and efficient and thorough. They were also really kind and responsive and practical (for example, there was something I wanted to save and they helped me be realistic - sometimes I saved it anyway, and sometimes I let it go, but it was really easy to make the decisions. This cleanout was worth every penny and I truly don't know what I would have done without Jim and team. Jim was also great beforehand in helping me understand what they would (and wouldn't do), how to prepare, etc. I have done a similar cleanout elsewhere, and Jim's prices are very competitive. I am so grateful!"
Recommended by100%of homeowners
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FAQs for mold & toxic material test projects in Warren, NJ

Some companies offer a no‑cost phone or video consultation that screens for red flags. If the discussion points to a real issue, the pro will recommend a paid on‑site inspection. The complimentary call clarifies whether you need full testing, but it isn’t a substitute for samples, lab work, or a written report. Always confirm what the free service covers before you schedule.

A standard inspection, which includes basic air and surface samples, takes an average of two hours. If the pro needs to probe hidden spaces, such as wall cavities or ductwork, plan on up to six hours. Extra time allows the inspector to reach tight areas, collect additional samples, and document findings. Lab analysis is a separate process and often adds several business days to the overall timeframe before you receive the full report.

Mold thrives where moisture lingers and air flow is poor. Common hotspots include bathroom walls, kitchen backsplashes, window sills, HVAC vents, fireplaces, crawl spaces, and enclosed attics. Check these areas regularly—especially after leaks or high‑humidity weather—to catch growth early and avoid costly repairs.

Unchecked mold can knock 20% to 37% off a home’s market value because buyers worry about hidden damage and health risks. Even after remediation, visible staining or a history of major moisture issues can still lower offers and prolong the time on the market. Addressing mold quickly protects both your property’s structural integrity and its resale appeal.

The Warren, NJ homeowners’ guide to mold & toxic material tests

From average costs to expert advice, get all the answers you need to get your job done.