Products : Profiles & Transitions : Movement Joint Profiles : PROCONNEX™ C


ProConnex™ C is a corner profile that bridges the transition between floors and walls. It also prevents disruptive sound transfer. With an elegant joint design and uniform joint width, ProConnex™ C produces a visually pleasing expansion joint at changes of plane.

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  • Easy to install
  • Enables high level of elasticity in joints
  • Blends with and accents floor coverings
  • Can adjust height to fit the installation
  • Silicone insert may be replaced
  • Minimizes effects of impacts on joints


Conformance to Building Codes

Installation must comply with the requirements of all applicable local, state and federal code jurisdictions.

Environmental Consideration

Custom® Building Products is committed to environmental responsibility in both products produced and in manufacturing practices. Use of this product can contribute towards LEED® v3 certification:

  • Up to 1 point towards IEQ Credit 4.3, Low-Emitting Materials - Flooring Systems

General Surface Prep


Limitations to the Product

  • For use in interior applications. Stainless steel profiles may be used in exterior applications.
  • Consult CUSTOM technical services for installations in areas where harsh chemicals may be used.
  • Embed the profile in fresh setting material; retrowel or refresh if it has skimmed over prior to the installation of the profile.
  • Contact CUSTOM technical services for installations in interior and exterior pools and water features.
  • Ambient temperature, surfaces and materials should be maintained at a temperature between 50° F (10° C) and 95° F (35° C) during application.

Application of Product

ProConnex C

Measure the thickness of the tile to make sure that the profile will provide proper protection; the upper edge of the profile must always be at the same height or lower (up to 1/32" lower) than the adjacent tile edges. Check the profile for damage – use only undamaged profiles. Use suitable clamps, saws or cutting devices as well as personal protective equipment for cutting and deburring the profile. Tools that have already been used for other metals cannot be used with stainless steel. Cutting tools must be free of iron, chlorine and sulphur.

Spread thin-set mortar on the substrate where the profile is to be placed with a notched trowel.  Place the stamped fitting strip of the profile into the thin-set mortar and align with the predetermined edge, then cover stamped fitting strip completely with additional thin-set mortar. Make sure to embed the profile in fresh setting material; retrowel or refresh if it has skimmed over prior to the installation of the profile. The tiles adjacent to the fitting strip must be placed so they are completely embedded into the thin-set mortar over the stamped fitting strip. The tiles should be even or slightly above the edge of the profile.  The space between the profile and adjacent tile should be 1/16" - 1/8" wide.  Make sure that the joint between the floor covering and the profile is completely filled with grout.

When installing PROCONNEX C in rooms with water exposure, make sure that setting materials are not in the gap in the floor covering substrate. If the joints of two profiles meet at a diagonal plane, do not allow the ends to overlap - instead, cut an angled joint or make recesses and fill in the gap by elastic means.

Clean away any mortar or grout residue from the sides of the profile immediately, using clean water and a non-abrading sponge pad or cloth. Do not allow the mortar or grout to dry on the surface of the profile.


Store in a cool dry area.  Protect from damage that may bend or twist the profile.

Product Maintenance

Use TileLab Grout and Tile Cleaner or Aqua Mix Concentrated Stone and Tile Cleaner and a sponge or soft cleaning cloth to clean the surface of the profile. Do not use abrasive cleaners, as they will scratch the surface.

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