Hydroguard®
Hydroguard® - Hydrotech's Lightweight PMR.
Hydroguard provides both insulation and lightweight ballasting for PMR assemblies. Composed of 2 ft. x 4 ft. Styrofoam™ panels topped with latex modified concrete and tongue and groove edges along the long sides allow each board to be interlocked during installation, creating a continuous layer of thermal protection. Hydroguard acts as a durable barrier, protecting the roofing membrane from temperature extremes and mechanical abuse. Lightweight and easy to install, Hydroguard is ideal for flat roof applications where the use of stone ballast is not practical.
Advantages...
- Provides protection to MM6125® from environmental extremes and construction and maintenance traffic.
- Eliminates condensation problems by insulating the roof assembly and keeping the dew point above the roof membrane.
- Smooth, attractive surface is resistant to thermal shock, sun, hail and vandalism.
- CFC free and reusable.
Limitations...
- Hydroguard is designed to accept light foot traffic. In applications where excessive foot or construction traffic is anticipated, walkway pads of concrete pavers must be used.
- Depending on the site and wind conditions, additional securement may be required.
- Panels should be shielded from direct sunlight until installation.
Types...
Hydroguard is topped with a nominal 3/8 thick surface and weighs on average 4.5 pounds per square foot. For applications where additional protection is required, Hydroguard is also available with a thicker concrete topping. Heavy Hydroguard has a 15/16 inch thick surface and weighs approximately 11 pounds per square foot. Hydroguard comes in four attractive colors, including natural gray (standard), red, green, and tan.
Physical Properties...
ATTRIBUTE | VALUE | TEST METHOD |
Extruded Polystyrene | Type VI | ASTM C 578 |
Latex Modified Concrete Face | ||
Standard | 3/8" thick | |
Heavy | 15/16" thick | |
Finished Overall Dimension: | 24" wide by 48" long/p> | |
Standard | 2.375: thick (2" foam) | |
3.375" thick (3" foam) | ||
Heavy | 2.938" thick (2" foam) | |
3.938" thick (3" foam) | ||
Weight: | ||
Standard | 4.5 lbs./sq/ft. | |
Heavy | 11 lbs./sq/ft. | |
R Value @75 °F mean temp | 5 per inch of foam | ASTM C 518 |
Water Absorption | <0.1% by volume (max.) | ASTM C 272 |
Water Vapor Permeance | 0.8 perm (max.) | ASTM E 96 |
Freeze/Thaw | 750 cycles | ASTM C 666 "B" |
Compressive Strength (foam) | 40 lbs./sq. inch | ASTM D 1621 |
Steel Ball Impact Test | Slight Indentation | FM 4470 |
Point Loading (1"x1"): | ||
Standard | 450 lbs./sq. ft. | |
Heavy | 1300 lbs./sq. ft. |