This is the official repair kit for DITRA-HEAT-E-HK heating cables — the fix for a cable that's been accidentally nicked, cut, or damaged during installation. If you've severed a heating cable with a trowel or utility knife (it happens more than anyone admits), this kit lets you splice it back together without replacing the entire cable.

Important: this kit is for repairs during installation, BEFORE the cable is covered with mortar and tile. If a cable fails after the floor is tiled, the repair process is significantly more involved (you'll need to locate the break and expose it). This kit provides the splice components — the access is up to you.

What's in the kit

• Heat-shrink splice connectors
• Connection hardware for rejoining the severed conductors
• Step-by-step splice instructions

When you need it

• Cable cut or nicked during installation (trowel, knife, or screw)
• Cable damaged during membrane placement
• Factory splice (cold lead junction) damaged during rough-in
• NOT for: Shortening a cable that's too long — cables CANNOT be cut to length. You must use the correct cable size for your heated area.

Important rules

• Test cable resistance with a multimeter BEFORE AND AFTER the repair — readings should match the factory specs on the cable label
• If resistance readings are significantly off after repair, the splice may not be reliable
• A properly spliced cable should match its original resistance within ±5%
• Document the repair — write the post-repair resistance on the cable box label
• This repair must be performed by a qualified person — incorrect splicing creates fire risk

Prevention tips

• Always test cable continuity at three points: before installation, after routing through membrane, after tiling
• Use caution when spreading mortar over routed cables — flat side of trowel, light pressure
• Mark cable locations on the membrane with tape before mortaring
• Keep a repair kit on-site for every DITRA-HEAT job — they're cheap insurance

Pairs with

• All DITRA-HEAT-E-HK heating cables (120V and 240V)
• A multimeter (not included — essential for testing)