• Air temperature must be 50°F (10°C) and rising. Surface temperature must be 50°F (10°C) and rising.
  
• SURFACE MUST BE COMPLETELY DRY. Do not install if rain has occurred within 24 hours prior to installation, or if rain is expected within 24 hours after installation. Ensure irrigation systems in close proximity are disabled for at least 24 hours prior to and after installation of mats.
  
• Portland cement concrete curing compound must be completely removed by sandblasting or water blasting the surface. This step must be done if the concrete surface is 6 months old or newer. If water blasting method is chosen, a minimum of 24 hours drying time is required before mat installation. No special surface preparation is required for placing mats on asphalt surfaces.
  
• Do not apply to surfaces that are deteriorating or in poor condition.
  
• If surface has an existing detectable or tactile surface impression, either fill in pattern to achieve a smooth level surface or grind off existing pattern down to a smooth level surface. If an existing detectable warning product has been applied, ensure all adhesives are removed prior to installing the ATM detectable warning mat and that ATM permanent primer is used as detailed below.
  

• Depending on local and state requirements, the optional anchoring system may be used.
  
• Ensure all above general conditions are met.
  
• Surface must be clean and free of any contaminants which may include but not limited to oils, grease, sand, dirt, loose aggregate, mud, soil and salt.
  
• Refer to federal ADA regulations as well as local guidelines, regulations and specifications for correct placement and alignment of detectable warning surfaces.
  
• It is critically important to leave at least 1” of solid concrete or asphalt surface beyond the edge of the Detectable Warning Mat on all four sides. *This could be an issue for the front side of the mat that must be within 2” from the back of the curb line.” Quite often, to meet regulations around a radius, you need that whole 2” gap.
  
• Thoroughly clean the area to which the mat is being applied with broom for large debris and high pressure air or leaf blower for complete sand/grit removal. This is especially critical if surface has been ground or sandblasted.
  
• Place mat with poly backing side down in cleaned area. If area cleaned does not extend 3-6+ inches from all 4 sides, reclean area, per above guidelines.
  
• If cleaned area is large enough, use carpenter pencil or marker and mark all four edges on cleaned surface so mat can be installed in correct position later.
  
• If mats need to be trimmed or cut to meet regulations, trim mats prior to removing the poly backing and applying. A box cutter blade or similar sharp cutting instrument is recommended.
  
• Prime the surface with the supplied ATM Permanent Primer. This may be done by roller, brush or sprayer. The area to be primed should include entire area covered by the mat and at least _” past the marked outside edges of the Detectable Warning Mat. (Drying of any puddles is also required). The primer should dry in approximately 15 minutes or less, based on minimum of 75°F (24°C) application time. The primer should be dry to the touch with no transfer from surface.
  
• If using optional anchoring system, punch holes in the mat before removing poly backing and applying to surface. Using a block of wood, leather punch and mallet, cut the holes in the mat for anchor installation. 4 holes per 2’ x 3’ mat are recommended. The anchors are to be in line with the dome rows and behind the corner domes as marked in the drawings below. (See photos 1 and 3).
  
• Peel the poly backing from the adhesive on the back of the mat and position the mat on the dried primed surface. Care should be taken not to stretch the mat while applying. Use the marks made on the surface earlier as a position guide. If air bubbles occur, gently pull the mat off the surface and re-apply.
  
• Tamp the mat in place with an instrument such as an ATM 19-151 Tamper Cart*. For large installations, it is recommended the installer purchase a specially designed ATM 19-154 Detectable Warning Mat Tamper Cart*. This will greatly reduce installation time and ensure a successful installation.
  
• Using the Tamper/roller device described above, first tamp/roll parallel to the 3’ wide side of the mat. A minimum of 3 passes is required over the entire mat. Then tamp/roll the mat parallel to the 2’ wide side of the mat. A minimum of 3 passes is required over the entire mat. Never twist the tampering device during tamping. Repeat tamping as necessary to ensure the mat has completely conformed to the surface.
  
• Special attention should be paid to the outside edges of the Detectable Warning Mats to make sure they are firmly adhered to the surface. A minimum of 3 passes is recommended along the entire perimeter of the mat. Failure to follow this procedure will void the manufacturer’s warranty.
  

• Using a hammer drill and the drill bit supplied (3/16” c 6” long); drill into the concrete or asphalt surface through the holes that were punched into the mat above. Be sure to be 1 + inches deeper than the screw length. (See photos 2 and 3).
  
• Clean dust and debris from mat.
  
• Place the plastic insert into the drilled holes, put screw that was supplied with the mat into the insert and screw bolts to top of insert. (See diagram below). Be careful NOT TO CRUSH THE INSERT by over-tightening. Use the tip provided in the anchoring kit to tighten the screw. If the hole is not drilled deep enough, the head of the screw will not set against the top flange of the insert. If this happens,
  remove the insert and screw and re-drill the hole deeper, then repeat.
  
• Clean mat as required. As an option, the 4 corners of the mat may be radius cut or angle-cut at installer’s discretion.
  

* Both of these devices are non-vibrating mechanical carts. Use a minimum of an additional 90 lbs. to the tamping cart so the total weight of the cart with weights is at least 200 lbs.