Schluter®-DILEX-STF
Heavy-duty expansion joint profile with an interlocking center section
- Anchoring legs secure to the substrate with concrete anchoring screws
- Mortar and floor coverings are applied over the anchoring leg for a seamless finish
- Interlocking center section allows movement of ± 1/4" (6 mm) with a joint width of 1-9/16” (40 mm) and ± 3/8" (10 mm) with a joint width of 2" (50 mm)
- Telescoping center components absorb movement in three dimensions
- Available in 6 height and width combinations
- Ideal for areas with heavy foot, vehicle, and industrial traffic, such as warehouses, shopping centers, machine-cleaned surfaces
Find recommended accessories here
Profile Estimator
Discover what you need for tile protection and easy transitions.
Schluter®-DILEX-STF is a maintenance-free expansion joint profile system made of aluminum. The profile assembly comes pre-drilled, secured, and aligned with brackets at the installation width. The profile anchoring legs secure to the substrate with concrete anchoring screws. Mortar and floor coverings are applied over the anchoring leg. The interlocking center section allows movements of ± 1/4" (6 mm) [with a joint width of 1-9/16” (40 mm)] or ± 3/8" (10 mm) [with a joint width of 2" (50 mm)]. The telescoping center components allow for the absorption of movement in three dimensions.
DILEX-STF is for use in areas exposed to heavy foot, vehicle and industrial traffic, e.g. in warehouses and production facilities, shopping centers, airports, train stations, multi-story parking garages, or for surfaces cleaned by machine.
DILEX-STF requires no special maintenance or care and is resistant to mold and fungi. Clean profiles periodically using pH neutral cleaning agents. Oxidation films on exposed aluminum may be removed with a common polishing agent but will form again.
1. Select the appropriate DILEX-STF profile for the construction joint width and the finish height of the floor surface. The profile should be installed slightly below the floor surface (never proud). The anchoring legs must not protrude into the construction joint. Note: Do not remove the alignment brackets until the anchoring screws are installed.
2. If the substrate is not flat or height compensation is required, level the anchoring leg surface using a shrinkage-free mortar. Ensure the joint is free of all setting materials.
3. Set the profile in position, ensuring it is aligned well to the construction joint and completely level.
4. Anchor both sides of the profile. Alternating sides install one masonry anchor screw every 6" (152 mm) along the entire length of the profile, this will result in a screw every 12" (300 mm) on each anchoring leg, in an alternating pattern. For the 7/8" (22 mm) - height DILEX-STF, use flat countersink head screws and countersink holes per manufacturer recommendations.
5. Remove the alignment brackets, then complete the mortar bed installation, membrane, and floor coverings per standard methods while leaving a gap for flexible sealant along the edge of the profile.
6. Fill the gap along the profile with flexible sealant then immediately remove the protective tape from the top surface of the profile.
