High-Performance Thick Slab Heating Cables | Thermawire
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Thick Heating Cables

Now available in both 120 & 240 V models!

Just over 1/4" or 7mm thick, these tough heating cables are the contractor's choice for concrete slab heating and over sub-floor primary heating applications.  The benefit of using thicker heating cables includes:

  • The only heating cable product certified for embedding in concrete slabs.  Ideal for slab on grade construction, basements and garages.  Typically installed over 2" or more of rigid foam insulation and attached to 6"x6" welded wire mesh with nylon cable ties - these cables are easy to install and the most cost effective solution for heating concrete slabs.  These are also the best choice for drypack installations.
  • Construction site friendly.  They are almost impossible to damage since they have such a thick and tough outer jacket.  From our experience this is essential in new construction since nobody wants to be responsible for replacing finished flooring and the heating system in the event of damage caused by other trades.
  • Higher linear output means less cable to lay and lower cost per SF or M2.  These cables are designed for primary heating applications and are consequently more powerful and designed to last.
  • Ideally suited for un-reinforced sub-floor installations when used in conjunction with metal mesh and embedded in a nominal 3/8" thick overpour.
  • Similarily suitable for installation under natural 3/4" hardwood with 3/8" plywood strapping and mortar between cable runs.
Download the installation guide for review here:  Thick Heating Cable Installation Guide
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  • ThermaWire 120V 910W Thick Floor Heating Cable
    $421.00 $252.60 ThermaWire 120V 910W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 83-103 SF | Under Wood: 77-96 SF | Under Tile: 66-83 SF| Cold Areas: 61-76 SF
  • ThermaWire 120V 735W Thick Floor Heating Cable
    $367.00 $220.20 ThermaWire 120V 735W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 67-84 SF | Under Wood: 62-77 SF | Under Tile: 53-67 SF| Cold Areas: 49-61 SF
  • ThermaWire 120V 580W Thick Floor Heating Cable
    $315.00 $189.00 ThermaWire 120V 580W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 53-66 SF | Under Wood: 49-61 SF | Under Tile: 42-53 SF| Cold Areas: 39-48 SF
  • ThermaWire 120V 470W Thick Floor Heating Cable
    $276.00 $165.60 ThermaWire 120V 470W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 43-53 SF | Under Wood: 40-49 SF | Under Tile: 34-43 SF| Cold Areas: 31-39 SF
  • ThermaWire 120V 375W Thick Floor Heating Cable
    $244.00 $146.40 ThermaWire 120V 375W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 34-43 SF | Under Wood: 32-39 SF | Under Tile: 27-34 SF| Cold Areas: 25-31 SF
  • ThermaWire 120V 300W Thick Floor Heating Cable
    $218.00 $130.80 ThermaWire 120V 300W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 27-34 SF | Under Wood: 25-32 SF | Under Tile: 22-27 SF| Cold Areas: 20-25 SF
  • ThermaWire 120V 240W Thick Floor Heating Cable
    $198.00 $118.80 ThermaWire 120V 240W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 22-27 SF | Under Wood: 20-25 SF | Under Tile: 17-22 SF| Cold Areas: 16-20 SF
  • ThermaWire 120V 195W Thick Floor Heating Cable
    $182.00 $109.20 ThermaWire 120V 195W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 18-22 SF | Under Wood: 16-21 SF | Under Tile: 14-18 SF| Cold Areas: 13-16 SF
  • These thick heating cables are C-CSA-U certified for general purpose and wet applications indoors. Your investment is protected by our 10 year warranty which will cover repair costs or replacement up to the original cost of the cable. CFH-T cables can be embedded in concrete slabs or over existing subfloors within as little as 3/8" of mortar or self-leveling cement. Using 2.5 lb diamond lath metal mesh over cables is an ideal way of reinforcing a floor without raising the floor height. See installation section for more details.
    $186.00 $111.60 ThermaWire 240V 185W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 17-21 SF | Under Wood: 16-20 SF | Under Tile: 13-17 SF | Cold Areas: 12-15 SF
  • These thick heating cables are C-CSA-U certified for general purpose and wet applications indoors. Your investment is protected by our 10 year warranty which will cover repair costs or replacement up to the original cost of the cable. CFH-T cables can be embedded in concrete slabs or over existing subfloors within as little as 3/8" of mortar or self-leveling cement. Using 2.5 lb diamond lath metal mesh over cables is an ideal way of reinforcing a floor without raising the floor height. See installation section for more details.
    $196.00 $117.60 ThermaWire 240V 200W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 18-22 SF | Under Wood: 17-21 SF | Under Tile: 14-18 SF | Cold Areas: 13-16 SF
  • These thick heating cables are C-CSA-U certified for general purpose and wet applications indoors. Your investment is protected by our 10 year warranty which will cover repair costs or replacement up to the original cost of the cable. CFH-T cables can be embedded in concrete slabs or over existing subfloors within as little as 3/8" of mortar or self-leveling cement. Using 2.5 lb diamond lath metal mesh over cables is an ideal way of reinforcing a floor without raising the floor height. See installation section for more details.
    $215.00 $129.00 ThermaWire 240V 250W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 22-28 SF | Under Wood: 21-26 SF | Under Tile: 18-22 SF | Cold Areas: 16-21 SF
  • These thick heating cables are C-CSA-U certified for general purpose and wet applications indoors. Your investment is protected by our 10 year warranty which will cover repair costs or replacement up to the original cost of the cable. CFH-T cables can be embedded in concrete slabs or over existing subfloors within as little as 3/8" of mortar or self-leveling cement. Using 2.5 lb diamond lath metal mesh over cables is an ideal way of reinforcing a floor without raising the floor height. See installation section for more details.
    $239.00 $143.40 ThermaWire 240V 310W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 28-35 SF | Under Wood: 26-32 SF | Under Tile: 22-28 SF | Cold Areas: 21-26 SF
  • These thick heating cables are C-CSA-U certified for general purpose and wet applications indoors. Your investment is protected by our 10 year warranty which will cover repair costs or replacement up to the original cost of the cable. CFH-T cables can be embedded in concrete slabs or over existing subfloors within as little as 3/8" of mortar or self-leveling cement. Using 2.5 lb diamond lath metal mesh over cables is an ideal way of reinforcing a floor without raising the floor height. See installation section for more details.
    $269.00 $161.40 ThermaWire 240V 385W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 35-44 SF | Under Wood: 32-41 SF | Under Tile: 28-35 SF | Cold Areas: 26-32 SF
  • These thick heating cables are C-CSA-U certified for general purpose and wet applications indoors. Your investment is protected by our 10 year warranty which will cover repair costs or replacement up to the original cost of the cable. CFH-T cables can be embedded in concrete slabs or over existing subfloors within as little as 3/8" of mortar or self-leveling cement. Using 2.5 lb diamond lath metal mesh over cables is an ideal way of reinforcing a floor without raising the floor height. See installation section for more details.
    $306.00 $183.60 ThermaWire 240V 480W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 44-55 SF | Under Wood: 41-51 SF | Under Tile: 35-44 SF | Cold Areas: 32-40 SF
  • These thick heating cables are C-CSA-U certified for general purpose and wet applications indoors. Your investment is protected by our 10 year warranty which will cover repair costs or replacement up to the original cost of the cable. CFH-T cables can be embedded in concrete slabs or over existing subfloors within as little as 3/8" of mortar or self-leveling cement. Using 2.5 lb diamond lath metal mesh over cables is an ideal way of reinforcing a floor without raising the floor height. See installation section for more details.
    $353.00 $211.80 ThermaWire 240V 600W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 55-68 SF | Under Wood: 51-63 SF | Under Tile: 44-55 SF | Cold Areas: 40-50 SF
  • These thick heating cables are C-CSA-U certified for general purpose and wet applications indoors. Your investment is protected by our 10 year warranty which will cover repair costs or replacement up to the original cost of the cable. CFH-T cables can be embedded in concrete slabs or over existing subfloors within as little as 3/8" of mortar or self-leveling cement. Using 2.5 lb diamond lath metal mesh over cables is an ideal way of reinforcing a floor without raising the floor height. See installation section for more details.
    $411.00 $246.60 ThermaWire 240V 750W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 68-85 SF | Under Wood: 63-79 SF | Under Tile: 55-68 SF | Cold Areas: 50-63 SF
  • These thick heating cables are C-CSA-U certified for general purpose and wet applications indoors. Your investment is protected by our 10 year warranty which will cover repair costs or replacement up to the original cost of the cable. CFH-T cables can be embedded in concrete slabs or over existing subfloors within as little as 3/8" of mortar or self-leveling cement. Using 2.5 lb diamond lath metal mesh over cables is an ideal way of reinforcing a floor without raising the floor height. See installation section for more details.
    $483.00 $289.80 ThermaWire 240V 940W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 85-107 SF | Under Wood: 79-99 SF | Under Tile: 68-85 SF | Cold Areas: 63-78 SF
  • These thick heating cables are C-CSA-U certified for general purpose and wet applications indoors. Your investment is protected by our 10 year warranty which will cover repair costs or replacement up to the original cost of the cable. CFH-T cables can be embedded in concrete slabs or over existing subfloors within as little as 3/8" of mortar or self-leveling cement. Using 2.5 lb diamond lath metal mesh over cables is an ideal way of reinforcing a floor without raising the floor height. See installation section for more details.
    $573.00 $343.80 ThermaWire 240V 1175W Thick Floor Heating Cable
    7mm or 1/4 inch diameter twin conductor heating cable. 5.6 W/F max 15 W/SF. Sizing guidelines: In concrete: 107-133 SF | Under Wood: 99-124 SF | Under Tile: 85-107 SF | Cold Areas: 78-98 SF

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