alerttile® Detectable Warning

alerttile surface applied detectable warnings

Our Detectable Warnings are Proudly Made in the USA

alerttile® Truncated Domes are designed to comply with ADA standards.

  1. Reinforced thermoset composite engineered for excellent wear and strength.
  2. Safety-speckled surface for additional slip resistance.
  3. Cross section of truncated dome showing dimensions.
  4. Perimeter beveled-edge provides safe transition for pedestrians.
  5. Innovative safety spars reinforce panel strength and increase traction for pedestrians.
  6. In-line domes spaced on exact 2.35" centers (A.D.A. 4.29.2)
  7. Pre-drilled anchor holes speed installation.
  8. Exact required detectable warning length.
  9. Exact required detectable warning width.
  10. Powder coated screw heads make attractive finished product.


alerttile® Detectable Warning Specification Sheet

Property ASTM Standard Result
Slip Resistance C 1028 Dry 1.03 / Wet .83
Wear Resistance ASTM C 501 83 grams or 0.0107"
Impact Resistance D 256 8.0 Izod ft-ibs / in (notch)
Adhesion Bond Strength C 482 No Failure
Color / Contrast Cap Y (LVR) Brick Red 5-15
Safety Yellow 25-50
Colonial Red 5-15
Water Absorption C373 0.3 - 0.6%
Compressive Strength D 695 30,000 psi
Flexural Strength D 790 19,920 psi
Tensile Strength 1/8" D 638 5,511 psi
Color Integral Throughout Product Yes
Dome Height 0.2" Yes
Dome Base Width 0.9" Yes
Dome Top Diameter 0.45" Yes
Dome Spacing 2.35" Center-to-Center
Accelerated Weathering ASTM G155-05 No Change
Salt Spray B117 No Change
Freeze-Thaw Durability C 1262-08 Pass
Waste Classification USEPA 40 CFR Part 261 Non-Hazardous

alerttile® CAD Drawings

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alerttile Detectable Warning CAD Drawing