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AT-XP® High-Strength Acrylic Adhesive


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Acrylic Anchoring Adhesives

This product's information may differ depending on the category of use. You are currently viewing details related to Acrylic Anchoring Adhesives. You can also view product information related to the category: Strong-Rod® URS Components

Formulated for high-strength anchorage of threaded rod and rebar into cracked and uncracked concrete and masonry under a wide range of conditions, AT-XP adhesive dispenses easily in cold or warm environments and in below-freezing temperatures with no need to warm the cartridge. When mixed properly, this low-odor formula is a dark teal color for easy post-installation identification.

Key Features

  • Passed the demanding ICC-ES AC308 adverse-condition tests pertaining to reduced and elevated temperatures and long-term sustained loads
  • Code listed under the IBC/IRC for cracked and uncracked concrete per IAPMO UES ER-263 and City of L.A. RR25960
  • Code listed under the IBC/IRC for masonry per IAPMO UES ER-281 and City of L.A. RR25966
  • AT-XP is code listed for installation with the Speed Clean™ DXS system without any further cleaning (AT-XP: IAPMO-UES ER-263)
  • 10:1 two-component high-strength, acrylic-based anchoring adhesive
  • Suitable for use under static and seismic loading conditions in cracked and uncracked concrete as well as masonry
  • Easy hole-cleaning procedure — no power-brushing required
  • Suitable for use in dry or water-saturated concrete
  • For best results, store between 14°F (–10°C) and 80°F (27°C)
  • Cures in substrate temperatures as low as 14°F (–10°C) in 24 hours or less
  • Available in 9.4 oz., 12.5 oz. and 30 oz. cartridges for application versatility
  • Volatile Organic Compound (VOC) – 30 g/L
  • Manufactured in the USA using global materials
Model No. Option Packaging Qty. Carton Qty. Compatible Tools
AT-XP10 9.4 oz. (16.9 in.3) coaxial cartridge 1 6 CDT10S dispensing tool / AMN19Q mixing nozzle
AT-XP13 12.5 oz. (22.5 in.3) side-by-side cartridge 1 10 ADT813S dispensing tool / AMN19Q mixing nozzle
AT-XP30 30 oz. (54 in.3) side-by-side cartridge 1 5 ADT30S, ADTA30P or ADTA30CKT dispensing tool / AMN19Q mixing nozzle


  • Threaded rod anchoring and rebar doweling into concrete and masonry
  • Suitable for horizontal, vertical and overhead applications

Storage Conditions

  • For best results store between 14°F–80°F (-10°C–27°C). Partially used cartridges can be stored for a limited time by leaving nozzle in place. To re-use, attach new nozzle.

Shelf Life

  • 12 months from date of manufacture in unopened container


  • Surfaces to receive adhesive must be clean.
  • Base material temperature must be 14°F or above at the time of installation. For best results, material should be 14°F (–10°C) to 80°F (27°C) at time of application.
  • To warm cold material, store cartridges in a warm, uniformly heated area or storage container. Do not immerse cartridges in water to facilitate warming.
  • Mixed material in nozzle can harden in 3–4 minutes at temperatures of 70°F (21°C) and above.
  • Use only Simpson Strong-Tie mixing nozzles in accordance with Simpson Strong-Tie instructions. Modification or improper use of mixing nozzle may impair AT-XP adhesive performance.
  • For full instructions, see Adhesive Anchoring Installation Instructions.

Cure Schedule

Base Material
Temperature °F
Base Material
Temperature °C
Gel Time (mins.) Cure Time (hrs.)
1. For water-saturated concrete, the cure times must be doubled.
14 -10 30 24
32 0 15 8
50 10 7 3
68 20 4 1
86 30 1 1/2 30 min.
100 38 1 20 min.

Clean Up

Uncured material — Wipe up with cotton cloths. If desired, approved solvents, such as ketones (MEK, acetone, etc.), lacquer thinner, or adhesive remover can be used. DO NOT USE SOLVENTS TO CLEAN ADHESIVE FROM SKIN. Take appropriate precautions when handling flammable solvents. Solvents may damage surfaces to which they are applied. Cured material — Chip or grind off surface.

Suggested Specifications

Anchoring adhesive shall be a two-component, high-solids, acrylic-based system supplied in manufacturer's standard cartridge and dispensed through a static-mixing nozzle supplied by the manufacturer. The adhesive anchor shall have been tested and qualified for performance in cracked and uncracked concrete per ICC-ES AC308. Adhesive shall be AT-XP™ adhesive from Simpson Strong-Tie, Pleasanton, CA. Anchors shall be installed per Simpson Strong-Tie instructions for AT-XP adhesive. For additional questions, contact Simpson Strong-Tie.

Related Literature

Code Reports & Compliance