Field · ASTM E1105High-rise water-penetration testing in Los Angeles
On-site E1105 spray testing of installed curtain wall to isolate infiltration paths across multiple floors.
Read the case →Independent testing lab · Los Angeles · Est. 1988
We find out why
the building leaks.
Independent air, water, and forensic water-intrusion testing of windows, doors, and curtain walls — in the field and in the lab, across California.
Accredited by
ISO 17025FGIAIASWDMA
1988
Established
35+ yrs
Independent testing
ISO 17025
Accredited lab
LA · SF · SD
Statewide field service
ISO 17025 Accredited
Who we are
California's independent water-intrusion testing lab.
Fenestration Testing Laboratory, Inc. (FTL) was established in 1988 and is an ISO 17025–accredited test facility offering field and laboratory testing, forensic water-leak investigation, and consulting for fenestration products and the surrounding components of a building's envelope.
Our clients include manufacturers, architects, waterproofing consultants, general contractors, installers, and building owners. As an independent third party, we've provided investigative leak-detection and water-intrusion testing across California for over 35 years.
See our capabilitiesCapabilities
Four ways we prove building performance.
FIELD
Field Testing
On-site air-infiltration and water-penetration testing of installed windows, doors, and curtain walls.
Learn more → LABLaboratory Services
Adhesion, air leakage, water-penetration resistance, structural loading, operating force, life cycling, and missile-impact resistance — including a computer-controlled missile-impact cannon.
Learn more → FORENSICForensics & Litigation
Independent third-party forensic water-intrusion investigation and expert analysis for construction-defect claims — we find out why the building leaks.
Learn more → EQUIPEquipment & Calibration
We manufacture, repair, and calibrate ASTM E1105 spray racks, field pressure kits, AAMA 501.2 spray wands, and E783 air-leakage test kits — with an annual calibration program.
Learn more →Accreditations
Our paperwork is
always in order.
Independently accredited and audited — so your results stand up to manufacturers, code officials, and the courtroom alike.
ISO 17025FGIAIASWDMA
Selected work
When the building leaks,
we find out why.
Field · ASTM E1105
LaboratoryMissile-impact & cyclic testing to NAFS
Computer-controlled missile-impact cannon qualifying window systems for impact and cyclic wind-pressure performance.
Read the case →
EquipmentCustom field pressure kits, built & calibrated
In-house manufacture and calibration of ASTM E1105 spray racks and field pressure kits for testing crews.
Read the case →Request a quote
Tell us about
your project.
Send the standard, building type, location, and timeline — we'll come back with scope and scheduling. Prefer to talk?
- Call 909-477-4343
- Email Admin@FTLtesting.com
- Lab 10235 8th Street, Rancho Cucamonga, CA 91730