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Home: Welcome
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Alert!: Southern California Residents

The heavy rains may be damaging your home. Make sure to check carpet & flooring under your windows & look for signs of wet or soft drywall around your home. Don't forget to look at your ceilings, especially around can lights.

Take photos and videos of your leaks!

They help us understand your situation.

We can help! Call us today!


News! Western National Contractors is a terrific builder of Multi-Family construction projects and they have agreed to support the use of Corner Flash and other products by TLS Laboratories. Thank You Western National!

Helping diagnose, prevent, and manage water intrusion issues since 1997.

Manufacturer of specialty flashing products.

Since our founding, TLS Laboratories has been known for quality services, exceptional efficiency and the highest level of professionalism. No matter what service you’re looking for, we will not only meet, but exceed your expectations and ensure your full satisfaction.

Our team is up for every job, managing projects with the skill and experience our clients have come to expect. Please get in touch to learn more about our team, our company or for details about the services we provide.

Our services include water testing residential and commercial projects. We forensically test windows and wall systems when a known leak exists and needs to be defined.

We test during the course of construction to verify windows, doors and wall systems perform as desired.

We developed flashing products and systems widely used in the industry today. TLS Laboratories is the manufacturer of 5 different flashing products currently used by the nations top builders & architects.

TLS Laboratories continues to innovate and create new products for the industry. We help building material manufacturers test and develop their new products and correct installation procedures.

Our firm helps homebuilders, architects and homeowners prevent and manage water intrusion issues. We provide expert advice utilizing industry best practices in product selection, installation methods, and installer training. Our professional investigations will determine the source(s) of any water intrusion that may exist.

We manufacture Corner Flash and other products for major building material suppliers under our patented flashing system.

Customer Testimonial & Lightning Flash Corners Used Under Windows:


Check out this video on our very own Corner Flash system!

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