The Most Cost Effective GeoSynthetic Training Aid....

Now available on a menu-driven DVD or down-loadable from the internet, playable on lap-top and desk-top computers as well as DVD players.

An Important Addition to Civil Engineering, Regulatory, and Contracting Offices

Learn the Do's and Don'ts of Heat Seaming Synthetic Liners......
with the 80 Minute Training Video
"How to Heat Seam and Field Test Geomembranes"
only from Cadwallader Technical Services

Originally available as video tape for nearly $150, the more user-friendly format is now available for only $79.95 + $10 shipping. Where else can you find such detailed instruction at such cost-effective pricing?
ONLY $79.95
+ $10 shipping

Sample of the information contained on the DVD "How to Heat Seam and Test Geomembranes".

Train New Hires. Familiarize the Whole Department. Be Prepared for the Next Project.
  • See the techniques of hot wedge welding, extrusion welding, hot air welding, destructive testing, and non-destructive testing demonstrated and discussed by one of the industry's most experienced and qualified training teams

  • Includes information relevant to all geomembrane materials and all forms of heat seaming and heat seaming equipment.
Scenes From the Video Footage and Associated Discussion Points


View motion pictures of worst case scenarios such as welding over too much dirt and moisture, and explore the consequences of such actions.
See convenient close-up views, demonstrations, and explanations of weld quality. Learn what to look for in subtle appearances as well as with official results.
Learn how, why, and what can happen through the different means of poor heat penetration.
Hear and view discussion and comparison of different grinding techniques. View close-ups of results and technique on geomembranes including, for example, thinned cross sections.
Learn good/proper technique for extrusion welding t-joints and patches.
Understand proper use of hot air welding, what to do, what not to do, its capabilities and limitations.
Mark Cadwallader is an experienced seminar lecturer and has given numerous training seminars in geosynthetic materials and methods, and CQA protocol. He is available for such services to your office staff or as an assist in the field to bring personnel up to speed. Call or e-mail us to inquire.