National Certified Testing Laboratories
NCTL is an ISO 17025 accredited testing laboratory providing fenestration and building product certification testing alongside in-house fabrication and machining services, serving manufacturers, contractors, and architects across three US locations under the Molimo platform.
- Company typePrivate
- Founded1977
- HeadquartersYork, United States
- Headcount11–50
- GTM typeB2B
- OfferingServices
What National Certified Testing Laboratories does
National Certified Testing Laboratories (NCTL) is an ISO 17025 accredited, third-party testing laboratory specializing in building and construction product certification, with particular depth in the fenestration (window, door, curtain wall, storefront) vertical. Now operating as part of Molimo, NCTL delivers a broad testing menu — air/water/structural, blower door, deck and handrail, impact and cycling, insulating glass, material/component, pre-construction mock-up, safety glazing, and NFRC-certified thermal testing and simulation — through facilities in York, PA (headquarters), Springdale, PA, and Golden Valley, MN. The company is differentiated by a stack of industry accreditations (ISO 17025, NFRC, SGCC, IGCC, NAMI, Keystone, Miami-Dade County, Florida DBPR, AAMA/FIGA) that effectively gate market access for fenestration OEMs seeking code-compliant certification.
NCTL pairs accredited laboratory testing with in-house fabrication, machining, and R&D capabilities — a combination the company describes as rare in the market. The fabrication division delivers contract manufacturing, custom machining/fabrication, structural steel, process machinery (including extrusion tooling), miscellaneous metals, installation/alteration, and maintenance/repair services. This vertical integration lets NCTL build custom test rigs and specimen hardware internally rather than outsourcing, supporting faster turnaround on non-standard projects.
The business is a privately held, sales-led professional services firm targeting building product manufacturers, fenestration OEMs, contractors, and architects. Revenue is generated through quote-based project pricing under multi-year contracts, with sales driven by direct phone engagement with project specialists and a website/contact-form channel. NCTL reports 50+ employees including multiple licensed professional engineers who oversee testing and approve certification reports, with stated headcount and geographic footprint growth underway.
National Certified Testing Laboratories firmographics
Firmographics- Name
- National Certified Testing Laboratories
- Legal name
- National Certified Testing Laboratories
- Website
- https://nctlinc.com
- Company type
- Private
- Founded year
- 1977
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- NCTL is an ISO 17025 accredited testing laboratory providing fenestration and building product certification testing alongside in-house fabrication and machining services, serving manufacturers, contractors, and architects across three US locations under the Molimo platform.
- Ownership category
- akta.pro rank
National Certified Testing Laboratories industry classification
Industry- Product category
- Architectural Product Testing
- NAICS
- Testing Laboratories and Services (541380)
- SIC
- Services-Testing Laboratories (8734)
- akta.pro primary industry
- Testing, Adjusting & Balancing (TAB) & Performance Verification (BPABACAJ)
- akta.pro secondary industry
- Building Compliance Testing & Certification (Backflow, RPZ, Cross-Connection) (BPABAHAK)
Keywords
Where National Certified Testing Laboratories is headquartered
LocationHeadquarters
- HQ city
- York
- HQ country
- United States
- HQ region
- North America
Offices3 records
Markets served
National Certified Testing Laboratories business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Infrastructure, Technology or R&D, Supply Chain, Marketing or Sales
Revenue model
- Testing Services: Third-party accredited testing services for building and construction products including air/water/structural, thermal, safety glazing, insulating glass, impact/cycling, material/component, and pre-construction mock-up testing
- Fabrication and Machining Services: Custom fabrication, machining, structural steel, process machinery, miscellaneous metals, contract manufacturing, and installation/alteration services
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Testing Services |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
National Certified Testing Laboratories product offering
Product offeringCore offering
National Certified Testing Laboratories (NCTL), now operating as part of Molimo Architectural Product Testing, sells accredited third-party building product testing services — including air/water/structural, blower door, deck and handrail, field, impact and cycling, insulating glass, material/component, pre-construction mock-up, safety glazing, and thermal simulation testing — alongside custom fabrication, machining, structural steel, and process machinery services to fenestration manufacturers, building product producers, contractors, and architects.
Product overview
NCTL operates as part of Molimo Architectural Product Testing, offering a comprehensive suite of building and construction industry services through two integrated divisions: Testing Services and Fabrication & Machining. The Testing Services division provides accredited laboratory testing including air/water/structural testing, blower door testing, deck and handrail testing, field testing, impact and cycling testing, insulating glass testing, material/component testing, pre-construction mock-up testing, safety glazing testing, and thermal testing and simulation. The Fabrication & Machining division offers contract manufacturing, custom machining/fabrication, installation/alterations, maintenance and repair, miscellaneous metals, process machinery, and structural steel services. Together, these divisions enable customers to access testing, professional engineering, fabrication, and machining capabilities from a single vendor.
Differentiator
Problem solved
Functional benefit
Products and services
- Air, Water, Structural Testing Tests products for system air leakage, resistance to water penetration, and ability to withstand structural wind loads to confirm they handle environmental conditions. Targeted at fenestration and building envelope product manufacturers.
- Blower Door Testing Measures total building leakage and identifies high-leakage areas to evaluate air tightness for energy cost reduction. Used by building owners, homeowners, and product performance teams.
- Deck and Handrail Testing Evaluates deck and handrail components for code compliance, safety, durability against the elements, and aesthetic appeal. Offered to manufacturers, contractors, and builders.
- Field Testing Provides on-site evaluation to ensure installed products meet expectations, supplementing laboratory testing qualifications. Targeted at construction projects that need in-situ verification.
- Impact and Cycling Testing Tests fenestration products for resistance to flying debris, occupant safety, and building envelope integrity under high pressure winds and cycling loads.
- Insulating Glass Testing Runs insulating glass durability testing in a modern isolated, clean, conditioned laboratory, with portable Frost Point analysis and Gas Concentration instruments for in-situ testing.
- Material/Component Testing Provides technical evaluations of building product components, including pulling, bending, weathering, and ultraviolet exposure testing in a purpose-built materials laboratory.
- Pre-Construction Mock-Up Testing (PMU) Vets designs and installation practices before building construction using indoor (24-foot) and outdoor test walls with thermal control and hydraulic systems for structural movement testing. Aimed at contractors and project teams.
- Safety Glazing Testing ISO 17025 accredited, SGCC-approved testing for the properties of safety glazing materials, including impact testing and environmental exposure evaluation.
- Thermal Testing and Simulation Provides state-of-the-art hot box testing and NFRC certified simulation services for thermal performance evaluation of fenestration products.
- Contract Manufacturing Produces low-volume and specialized runs of parts or assemblies whose skill or volume requirements fall outside typical in-house production capabilities.
- Custom Machining/Fabrication Provides specialty fabrication with welding, machining, and craftsmanship for custom jobs that require aesthetic appeal and attention to detail.
- Installation/Alterations Performs new installations and modifications to existing structures using experienced fabrication experts.
- Maintenance and Repair Repairs damaged or weathered metal fabrications, including equipment, structures, and ornamental works.
- Miscellaneous Metals Fabricates and supplies non-structural metal components including handrails, framing, bracketry, accent pieces, fencing, and staircases.
- Process Machinery Designs and builds extrusion processing machinery including aluminum extrusion punches and saws, vinyl extrusion punches and saws, with tool and die capabilities.
- Structural Steel Provides structural steel fabrication and erection services including crane and hoist structures, full building erection, finish work, and retrofit structural steel.
Quantifiable outcome
- Fast, accurate test results for certification
Companies that use National Certified Testing Laboratories
Customer profileSegments3 records
Ideal customer profiles2 records
National Certified Testing Laboratories technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature8 records
National Certified Testing Laboratories partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- MolimocoreNCTL (National Certified Testing Laboratories) has joined Molimo, bringing diversity and expertise to the building and construction industry. Molimo is an architectural product testing and fabrication company that now includes NCTL's testing capabilities.
Scale indicators4 records
Recent moves6 records
Expansion highlights6 records
National Certified Testing Laboratories competitors and assessment
Company assessmentBroad incumbents
- SGS: One of the world's largest TIC companies with construction materials and fenestration testing capabilities. Competes with NCTL on building product certification, though its primary focus spans many adjacent industrial verticals.
- TÜV Rheinland: Global TIC firm offering building product testing, fenestration certification, and energy performance evaluation. Competes with NCTL on international OEMs that want a single vendor across US and European markets.
- Element Materials Technology: Global materials and product testing lab that serves construction products, fenestration, and building envelope OEMs. Directly comparable to NCTL on materials, structural, and thermal testing, with a much larger geographic footprint.
- TÜV SÜD: International testing and certification provider with building envelope, fenestration, and construction product testing capabilities. Comparable to NCTL on NFRC/ISO-accredited thermal and structural testing for global manufacturers.
- UL Solutions: Major US-based safety science and testing organization with fenestration, building envelope, and safety glazing certification programs. Overlaps with NCTL on SGCC safety glazing and NFRC-accredited thermal work, but UL is far broader in scope.
- Applus+: Global testing, inspection, and certification group with a Construction and building envelope segment. Competes for the same architectural product and fenestration certification work as NCTL, though with a primarily European footprint.
Direct peers
- Intertek: Global testing, inspection, and certification (TIC) leader that acquired Architectural Testing Inc., giving it one of the largest fenestration and building envelope testing footprints in North America. Directly competes with NCTL/Molimo for NFRC, AAMA, IGCC, and impact/cycling testing work from fenestration OEMs.
- NTS (National Technical Systems): US-based engineering and testing services company with capabilities in environmental, structural, and product qualification testing. Directly comparable to NCTL for material/component and building product qualification projects.
- Smithers: Independent testing and consulting firm serving materials, product, and regulatory compliance markets. Comparable to NCTL on building product performance and material characterization work for manufacturers.
Emerging players
- Wiss, Janney, Elstner Associates (WJE): US engineering consultancy known for building envelope and structural investigations, including fenestration failure analysis and mock-up testing. Overlaps with NCTL on pre-construction mock-up and forensic work but is primarily an engineering consultancy rather than a pure testing lab.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
National Certified Testing Laboratories compliance and trust
Trust signalCompliance12 records
National Certified Testing Laboratories financial estimates
Financial estimateRevenue estimate
Valuation estimate
National Certified Testing Laboratories leadership team
Management profileNumber of profiles
National Certified Testing Laboratories funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
National Certified Testing Laboratories M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about National Certified Testing Laboratories
What does National Certified Testing Laboratories do?
National Certified Testing Laboratories (NCTL), now operating as part of Molimo Architectural Product Testing, sells accredited third-party building product testing services — including air/water/structural, blower door, deck and handrail, field, impact and cycling, insulating glass, material/component, pre-construction mock-up, safety glazing, and thermal simulation testing — alongside custom fabrication, machining, structural steel, and process machinery services to fenestration manufacturers, building product producers, contractors, and architects.
Is National Certified Testing Laboratories a public or private company?
National Certified Testing Laboratories is a private company. It is classified as corporate owned and is currently operating.
When was National Certified Testing Laboratories founded?
National Certified Testing Laboratories was founded in 1977. It employs 11 to 50 people.
Where is National Certified Testing Laboratories based?
National Certified Testing Laboratories is headquartered in York, United States, in the North America region.
How does National Certified Testing Laboratories make money?
Two revenue lines are on record. Testing Services are the primary driver. The others are fabrication and Machining Services.
Who are National Certified Testing Laboratories's main competitors?
Broad incumbents on record are SGS, TÜV Rheinland, Element Materials Technology, TÜV SÜD, UL Solutions and Applus+. Direct peers are Intertek, NTS (National Technical Systems) and Smithers. Wiss, Janney, Elstner Associates (WJE) is listed as an emerging player.
Does National Certified Testing Laboratories have an API?
No public API is recorded for National Certified Testing Laboratories.
What industry is National Certified Testing Laboratories in?
National Certified Testing Laboratories's product category is Architectural Product Testing. Its primary akta.pro industry code is BPABACAJ, Testing, Adjusting & Balancing (TAB) & Performance Verification, with a secondary code of BPABAHAK, Building Compliance Testing & Certification (Backflow, RPZ, Cross-Connection). Its NAICS code is 541380 and its SIC code is 8734.