Technical Services

Technical Services

Contact our experts today for all your product and installation questions.

ARDEX has the most reliable and experienced technical service professionals in the industry. ARDEX Technical Service Consultants are available on the phone from 8 a.m. to 5 p.m., Monday through Friday, EST, or in the field. Your local ARDEX Americas Sales Professionals and Technical Field Specialists provide a guaranteed 24-hour jobsite response time. The ARDEX Americas Technical Services Team provides product and installation recommendations based on decades of experience. Technical recommendations can be provided in writing when required for all types installation environments.

ARDEX Technical Services phone:
1 888 512 7339

Technical Updates:

Our technical team does review, and sometimes, revise their recommendations for our products. They then issue a technical update on that product. Listed below are current technical updates, which you can search by product, date, or other search term. You can also find the relevant technical updates under the downloads tab on each relevant product page.

To learn more about our technical department, scroll down to meet our technical team, learn about OSHA/Silica standard compliance and read about our philosophy, Proper Prep.

  • Warm Weather Installation Guidelines
    We are writing to clarify our recommendations for the installation of ARDEX and W.W. Henry materials (to include patching, leveling, tiling and ARDEX Engineered Concrete Repair Systems materials) during periods of warmer weather. In accordance with the Portland Cement Association, “…if the temperature… will exceed 77°F, a plan should be developed to negate the effects of high temperature.” There are four temperatures that need to be checked: air, substrate, material and water. Knowing these temperatures and employing the installation guidelines described below will help ensure the desired results are achieved.
  • ARDEX VR 98 and Direct Application of Select HENRY® Adhesives
    HENRY 647 and HENRY 695 have been added to the list of HENRY adhesives approved for direct application over ARDEX VR 98. See the chart below for full application details. As originally announced in October, 2017, select HENRY adhesives are approved for direct application over ARDEX VR 98 under appropriate circumstances.* The pressure-sensitive installation method must be used, and the approved HENRY adhesive must be roller applied. The HENRY adhesives approved for this application are listed in the chart below.
  • RH and pH Maximums Confirmation for HENRY Adhesives
    We are writing to confirm the concrete relative humidity (RH) and pH maximum values for HENRY adhesives, as detailed below.
  • Clarification on Unsanded Materials and Crystalline Silica
    We are writing to address some industry confusion regarding unsanded patching and skim coating materials, such as ARDEX SKM, ARDEX FEATHER FINISH, ARDEX FORTI FINISH and similar competitive products. While sand is not an added component in these ARDEX unsanded product formulas, crystalline silica (sand) is listed as an ingredient on their safety data sheets (SDSs). This is due to the fact that crystalline silica is a naturally occurring component in several raw materials that are a part of the ARDEX unsanded product formulas, specifically limestone and Portland cement. Due to crystalline silica’s presence in limestone and Portland cement (as reported on their respective SDSs), and because both of these raw materials are part of the ARDEX formulas, a range of the “trace” silica that ultimately appears in our finished products must be estimated and reported.
  • Peaking and Curling of Solid Vinyl Tile and Plank
    Throughout the flooring industry, peaking and curling can be an issue when installing solid vinyl tile and plank. In our line of work, it is important that we understand the nature of these issues not only when resolving claims, but also when making adhesive recommendations prior to installation. To assist, the information below is geared at providing information on the principal causes and considerations for these installations.
  • APCS Cleaning and Maintenance Procedures
    We are writing to share our recommended cleaning and maintenance procedures for the ARDEX Polished Concrete System (APCS) products. These procedures are detailed below.
  • Grade Levels for LU 100 GS-4 and K 22 F
    There are three grade levels that we come across on any given job site: below grade, on grade and above grade. While most of our products are suitable for installation on all grade levels, ARDEX GS-4, ARDEX LU 100 and ARDEX K 22 F are limited to “above-grade” applications only where the space below is properly controlled for temperature and humidity. While this may seem straight forward, there are some special circumstances when determining where these products can be used. By definition, an on-grade substrate is one that has direct contact with the ground and sits on the surface of the earth. A below-grade substrate is also in direct contact with the ground, but is below the surface of the earth. Finally, an above-grade substrate is classified as being above the earth’s surface with no ground contact.
  • High Moisture Conditions and ARDEX Underlayments
    When considering the moisture content of a concrete slab and its resulting suitability to receive ARDEX underlayments without moisture mitigation, we currently defer to the manufacturers of the finishing materials (adhesives and floor coverings) being used. But now, with manufacturers offering resilient floor covering adhesives that are approved for installation at relative humidity levels above 80%, we are adjusting our position, as follows.
  • ARDEX 8+9™ and ASTM E514
    We are pleased to announce that ARDEX 8+9™ Rapid Waterproofing and Crack Isolation Compound has passed ASTM E514 Standard Test Method for Water Penetration and Leakage Through Masonry. During a 4-hour testing cycle, ARDEX 8+9 was exposed to 40 gallons of water per hour and 10 lb. of air pressure per square foot. Testing showed that ARDEX 8+9 provides total installation protection from water penetration and reduces the risk of condensation development in the building envelope.
  • High Rolling and High Point Loads Vinyl Flooring
    It has come to our attention that there is confusion in the market over when it is necessary to upgrade to a high-performance, high-solids, two-component epoxy adhesive for the vinyl flooring installations. First, it should be noted that, in general, resilient flooring manufacturers test in accordance with ASTM 970 – Standard Test Method for Static Load Limit, which measures a vinyl’s ability to withstand and recover from indentations introduced into the material through the application of a static point load. The Resilient Floor Covering Institute (RFCI), commenting on this testing methodology, has warned that the criteria for static loading as specified by ASTM 970 may be insufficient, particularly in regards to the ASTM 970’s deficiency in addressing dynamic loads. Citing RFCI’s definition of a dynamic load, “Dynamic loads are created when a load is placed on the floor, and then moved around the floor's surface by a rolling, sliding or dragging motion.” Based on this definition, loads such as these are common within the daily operation of a hospital or medical care facility. While vinyl flooring often is able to withstand static loads in accordance with ASTM 970, it may fail when those same loads become dynamic. The selection of the proper adhesive can help to mitigate the risk of static and dynamic loads from permanently deforming the vinyl flooring.