T. Clear Corporation
3255 Symmes Road
Hamilton, OH 45015
Toll Free: (800) 544-7398
Fax: (513) 870-9606
E-mail: sales@tclear.net or technical@tclear.net
Web site: www.tclear.net

The PMR Advantage

The T. Clear Protected Membrane Roof (PMR) Systems protect your building investment against major causes of roof failure:
  • U.V. Radiation
  • Thermal Shock
  • Wind
  • Hail
  • Physical Abuse

In all areas of the building envelope, the moisture barrier is placed on the warm side of the insulation. With one exception — a conventional roof system.


In a T. Clear Protected Membrane Roof System (PMR), the Dow Styrofoam® extruded polystyrene insulation is placed above the waterproof membrane to protect the membrane from the harsh rooftop environment.

Each 2' x 4' Lightguard®, Heavyguard®, or Coolguard® PMR Insulation panel utilizes the superior moisture resistance and high compressive strength properties of Dow Styrofoam. A layer of latex-modified concrete is bonded to the surface of each panel further protecting it from physical abuse as well as providing ballast. Each panel has tongue-and-groove edges for easy installation.

A T. Clear PMR does not involve particularly sophisticated engineering or require any new or different equipment to install. It uses the same components as a conventional roof system, but it uses them in a more efficient and effective way. It's not rocket science. It just works.


Features and Benefits of the T. Clear PMR System

Coolguard™ PMR Panels
  • Reduce roof top temperatures and "heat island" effect
Reusable in re-roofing or vertical expansion projects
  • Reduced landfill costs
Membrane protected from ultraviolet rays, temperature extremes, and physical abuse
  • Greater life-cycle value
  • Eliminates major causes of leaks and roof failures
  • Reduces yearly maintenance costs
Styrofoam retains at least 80% of its R-value over 15 years
  • Reduced energy costs
  • Predictable long-term performance
Styrofoam is resistant to water
  • Resists absorption of moisture which can lead to expensive tear-offs

Lightguard® & Coolguard PMR Panels are lightweight at 4.5 lbs. per sq. ft.

  • Ideal for roof spans where weight is a concern
  • Can be laid over existing membrane to add insulation
T. Clear PMR System Places dew point above the membrane
  • Eliminates condensation problems

Case Study
A T. Clear PMR System is the perfect choice for environments with high humidity such as paper and textile mills. When warm air meets cool air, water vapor condenses – the temperature at which water vapor condenses is called the "dew point."

In conventional roof systems, the dew point is below the waterproof membrane. So, when vapor condenses, it is deposited into your insulation and spread throughout by capillary action, decreasing its insulating value. And it can literally "rain" inside your building and deteriorate the roof deck over a period of time.

In a T. Clear PMR, the dew point is raised above the waterproof membrane. So, water vapor isn't allowed to condense inside your building.

T. Clear PMR Warranties

10 year - Limited Warranty
  • Included with each system at no additional charge. This warranty insures that your system will:
  • Stay in place on the roof in winds up to 90 mph
  • Retain at least 80% of its R-value for 15 years
  • Lightguard, Heavyguard, & Coolguard panels will not delaminate
Total Performance Warranty
  • Covers the total roof system with single-source responsibility.
  • Available for 10, 15 or 20 years
  • No haggling over who is responsible
  • Includes pre-job, start-up and job completion inspections by independent inspector/advisors
10, 15, and 20-Year Extended Warranties & Extended Wind Warranties*
  • Covers wind speeds of 100, 110 & 120 mph for 10 years
  • Roof system must be designed for the next highest wind rating (Ex: 110 mph wind for a 100 mph warranty)

*Indicate desire at Notice of Award so system can be engineered for higher rating