Constant Wattage Roof De-icing Systems

Warmzone’s constant wattage heating cable is a simple, proven, and reliable solution for roof de-icing applications as well as industrial process temperature maintenance and pipe freeze protection. PLCW heat cable can be installed along the roof eaves to prevent ice dams and icicles from forming. The cable is also commonly installed in roof gutters and downspouts to prevent ice buildup. When properly installed and operated, the heat cable can prevent ice dams by creating a path for the runoff, allowing melted snow to properly drain from the roof.

For more information about roof de-icing and pipe trace solutions, call and talk with a heat trace expert today at 888-488-9276.

Constant Wattage Heat Cable Systems

A Convenient, Affordable De-icing and Heat Trace Solution Constant wattage roof de-icing heat cable

If you’re looking for a quick, easy solution for general roof de-icing or pipe trace applications, constant wattage heat cable may be the answer for you. The cable is a versatile, reliable solution for various roof de-icing and pipe tracing applications.

Constant wattage heat cable features a parallel heating core that produces uniform thermal output over its entire length. Using a single power point, you can easily configure and install a heat tracing system in the field as short as a few feet or as long as several hundred feet. Warmzone’s constant wattage heat cable has outstanding electrical and thermal properties, and can be used for most chemically hostile environments.

Constant wattage heat cable from Warmzone® comes pre-assembled and ready to install. The cable can be quickly and easily installed along rooflines and in gutters and downspouts to prevent ice buildup and facilitate runoff. The cable can be used to keep water flowing on roofs and gutters in temperatures as cold as -40°F (-40°C).

In addition to keeping icicles and gutter ice at bay during the winter months, the heat cable is commonly used for pipe freeze prevention and process heating. For pipe trace applications, constant wattage cable is more commonly installed for process heating and velocity flow control of heavier materials like honey, wax, or other viscous material. The heat trace cables are ideally suited for applications where a particular watt density is required at all times.

Constant wattage heat trace cable

Unlike self-regulating heat cable that alters its heat output depending on temperature changes, the power output of constant wattage heat cable (wattage per linear foot), remains the same across its entire length. The cable is not susceptible to inrush currents. This property makes constant wattage the cable of choice for users looking to ensure that ambient temperature conditions will not affect the heat output of the de-icing cable.

The de-icing and heat trace cables operate on 120 volts AC, with an optional energy saving thermostat available. (Constant wattage cable requires a temperature controller or it will burn itself out due to its high heat ability.) The PLCW kit is easy to install, and is available in several cable lengths to accommodate various roof and gutter sizes.

Warmzone radiant heat experts stand ready to assist you with your roof de-icing, pipe trace, or radiant heat needs. Email us or fax us (801-948-7599) a plan or sketch of your roof and we will be happy to provide you with some options that are specific to the needs of your unique project. Warmzone also includes complete radiant heat system design services as well as providing expert recommendations and an accurate price estimate.

For more details about our free installation training, technical support, or professional roof de-icing system design services, call a roof heating expert today at 888-488-9276.


Constant Wattage Heat Cable Technical Information and Features

Roof heating cable system
Navigation bullet

Cable Construction: Twin conductor with continuous ground braid

Navigation bullet

Rated Voltage: 120 V

Navigation bullet

Output: 5 W/ft.

Navigation bullet

Cold Lead: 6 ft. (1.8 m) length 18/3 with plug

Navigation bullet

Bending Radius: Minimum 1 inch (2.54 cm)

Navigation bullet

Conductor Insulation: XLPE

Navigation bullet

Outer Insulation: PVC

Navigation bullet

Minimum Installation Temperature: -40°F (-40°C)

Navigation bullet

Warranty: 3-year limited warranty against manufacturing defects.


Each cable consists of tough XLPE inner insulation, AL foil, a continuous ground braid, and a weather resistant PVC (high-low temperature) outer jacket.

The cable comes pre-assembled, facilitating quick, easy installation

When installed properly, the cable can keep water flowing in temperatures as cold as -40°F (-40°C).

CSA listed in U.S. and Canada.

The Constant Wattage kit includes roof and gutter clips.

Energy saving thermostat available with 1-year warranty. (Recommended)

Product Literature

Constant Wattage Heat Trace and De-icing Systems
Constant Wattage De-icing Cable Data Sheet Constant Wattage De-icing Cable Installation Manual Overview of a Roof Heat Trace System (Illustration) How Ice Dams Form (Illustration) Warmzone Products and Services Brochure

Additional Roof Heating Literature             Additional Heat Trace Literature