Technical Services

Technical Updates

Technical Updates

Technical Updates:

Our Technical Services department monitor installation trends, to ensure that our recommendations are optimized for your success. It is sometimes required to adapt our existing recommendations. Current technical updates are listed below and can be searched by product, date or other search term.

Are you preparing for an ARDEX product installation? We recommend reviewing the technical data sheet and technical updates for each product prior to installation. Then, contact us to meet your local sales representative and obtain a job-specific recommendation for your project!

  • ARDEX SX™ Traffic Recommendations
    We are writing to clarify suitable traffic conditions for areas where ARDEX SX™ 100% Silicone Sealant for Tile and Stone Applications is used. ARDEX SX is suitable to receive pedestrian traffic in residential and light commercial applications. Please note that ARDEX SX is not recommended for floor installations in heavy commercial applications, such as airports and shopping malls. However, ARDEX SX is suitable for use in non-traffic areas and on walls in heavy commercial applications.
  • ARDEX Tile Setting Materials over Membranes in Exterior Applications
    We are writing to confirm our recommendations for the use of ARDEX tile setting materials on substrates where membranes such as ARDEX 8+9, Schluter Ditra and Schluter Kerdi are installed in an exterior application. This will confirm that our recommended tile setting materials for installation over ARDEX 8+9 and other approved membranes on exterior, horizontal substrates are ARDEX X 78, ARDEX FB 9 L, ARDEX X 32 and ARDEX X 90.
  • ARDEX UI 720™ FLEXBONE® Recommendation
    We are writing to clarify our recommendations for installing ARDEX UI 720 FLEXBONE over adhesive residue. If the adhesive residue is tacky, spread a polyethylene cleavage membrane or slip sheet (min. 4 mil thickness) over top prior to installing ARDEX UI 720 FLEXBONE. This will prevent the floating membrane from sticking to the adhesive.
  • ARDEX UI 720 FLEXBONE Suitable Applications
    We are writing to clarify our recommendations for ARDEX UI 720 FLEXBONE. ARDEX UI 720 is intended for use in light commercial and residential applications that will not be subjected to high rolling loads, heavy pedestrian traffic or hose cleaning. Suitable applications include, but are not necessarily limited to, the following:
  • Use of ARDEX Tile and Stone Products Over AdvanTech
    Previously, ARDEX Tile & Stone Products were not recommended for direct bond installations over AdvanTech subfloor panels. However, we are pleased to announce that, after extensive in-house testing and the release of an updated manufacturer’s recommendation, we are approving the use of certain ARDEX Tile & Stone Products over AdvanTech subfloor panels, as detailed below.
  • ARDEX Underlayments and Non-Porous Substrates
    We are writing to confirm our recommendations for ARDEX underlayments installed over ARDEX MC RAPID and other suitable non-porous substrates. As detailed in the charts below, several ARDEX underlayments can now be installed at a maximum thickness of 1/2” in these applications. Note that this results in fewer ARDEX MC RAPID applications requiring a sand broadcast, which is a positive change in light of the new OSHA regulations on crystalline silica.
  • Pre-Leveling with ARDEX ECRS Mortars
    We are writing to clarify our recommendations for using ARDEX TRM, ARDEX FDM, ARDEX FDX or ARDEX FP (hereafter referred to as “ECRS mortar”) beneath ARDEX underlayments, toppings, dressings or sealers.
  • 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.
  • ARDEX BACA Recommendation
    We are writing to clarify our recommendations for installing ARDEX BACA. For all applications, ARDEX BACA must be allowed to dry to the touch prior to placement of the repair mortar or concrete. The mortar or concrete must then be placed within 24 hours.
  • 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.