This is the kit you hope you never need — but you'll be extremely glad it exists if you do. The DITRA-HEAT-E-HK Splice Kit allows you to repair a damaged heating cable in-place, restoring function without tearing out your tile floor.

Heating cable can occasionally be nicked or cut during installation — tile setters aren't immune to accidents, and a chisel or tile saw blade landing in the wrong spot can sever a cable. Before you had this kit, that typically meant a lot of demo. Now it means a splice repair that Schluter has engineered to be both reliable and code-compliant.

What's in the kit

• All materials required to replace one factory splice in a DITRA-HEAT-E-HK cable
• Includes connectors, protective sleeve, and sealing materials
• Rated for in-floor installation — not a field hack, a manufacturer-approved repair method

When you need this kit

• A heating cable was accidentally cut or nicked during installation
• Cable resistance tests fail during or after tiling, indicating a damaged cable
• The factory splice (the black junction mid-cable) was accidentally embedded in a wall or inaccessible location — the splice must remain accessible; if it ended up in a wall, this kit can relocate it

Critical rule about factory splices

The factory-installed splice (the thicker black section in the middle of DITRA-HEAT-E-HK cables) must remain in the floor — never in a wall, conduit, or inaccessible location. If installation error placed it in a wall, this kit is the solution to re-splice the cable correctly in the floor assembly.

Pro Tips

• Test cable resistance with a multimeter BEFORE, DURING, and AFTER tiling — catching a damaged cable during installation (not after) is the difference between a small splice repair and a major tile removal
• Record the resistance values on the cable box label during each test phase — Schluter's documentation requirement, and useful for future troubleshooting
• Keep a splice kit on site during any DITRA-HEAT installation — better to have it and not need it than to wait for delivery while a schedule slips
• Never cut or shorten a heating cable — the resistance of the cable is calibrated to its length. Shortening changes resistance and causes failure. If cable is too long, loop it back within the floor area

One kit repairs one cable splice. For larger heating zones with multiple cables, have one kit per cable on-site during installation.