Thermalboard is a cost effective, low-profile, efficient, fast-responding, sustainable hydronic radiant panel underlayment system.


Sustainable Radiant Floor Heating Panels

Get a free project quote!

Ideal for remodeling and retrofit radiant projects. Cost effective. Shipped factory direct to your jobsite. Project specific layout provided.


Perfect Radiant Heat Solution for Custom Homes and Custom Home Remodels





Low Profile
No Cracking or Leveling
No Double-Plating Required
Higher Efficiency
Efficient & Fast Response Time
Superior Performance
Zero Formaldehyde
Sustainable Substrate
90% Recycled Content
Flooring Goods Friendly
Moisture Resistant MR 30

Thermalboard Applications

Over Insulated Subfloor

Thermalboard EPS Over Subfloor

Over Under-Insulated Subfloor

Thermalboard EPS Over Concrete

Over Concrete

Thermalboard EPS Walls & Ceiling

Over Walls & Ceilings

Versatile Radiant Floor Panel Options

Perfect for Custom Homes

Our current Thermalboard™ is higher performing and more sustainable than before with no added formaldehyde, new moisture resistance and high recycled content certifications. Panel installation is normally done by gluing and screwing or cross stapling to a subfloor.

Our new Thermalboard EPS™ is the same high quality board but available with many thicknesses of durable, high-quality EPS foam. It is normally attached to subfloor with adhesive and in some cases additionally anchored to the concrete.

We offer a variety of radiant panels to suit all project types. Enjoy superior radiant comfort regardless of climate. Give us a call at 866-341-1854 to learn more or get started with a free project quote.

Thermalboard & EPS Radiant Floor Panel Comparison Chart
Thermalboard Radiant Heat Density Chart

Thermalboard: The Perfect Match! Hydronic Heat Pump Friendly

We are all familiar with electric air to air heat pumps which provide forced air heating and cooling…sometimes referred to as mini splits. These air-to-air heat pumps have been used for whole house and spot cooling and heating combined with a separate electric heat pump water heater providing the domestic hot water. There is a better way.

Radiant Hydronic Heat Pumps Air-to-Water

Installation Videos

Follow the guide for a quick installation overview of Thermalboard. For more detailed instructions you can download our free Installation Manual here.

Installation Guide with Step by Step Instructions

Step by Step Installation Guide

Need more installation tips? Check out this step-by-step guide!

Easy Installation with Thermalboard

See the installation of a Thermalboard licensed product in a major remodel.

High Performance

Thermalboard installs directly below your finished floor, allowing the highly conductive aluminum to deliver heat quickly and efficiently.

Superior Responsiveness

Thermalboard is far more responsive than a cementitious thermal mass; providing quick heat up, avoidance of over-heating, and greater zone control.

Conventional Construction

Thermalboard is installed within the natural flow of a construction project using conventional practices and tools resulting in a smooth installation process.

Lower Operating Costs

Thermalboard’s high efficiency means lower operating costs over the lifetime of the system.

Low Profile

Thermalboard has a very low 5/8“ profile making it ideal for retrofit or remodeling applications.


Thermalboard is very lightweight at only 2lbs / sqft making it easy to maneuver and install. 

WBI Radiant Panel Manufacturer and mechanical engineering firm Monterey Energy Group discuss modern radiant floor heating.

Radiant Floor Heating in Custom Homes

With passion and expertise, our guests discuss how hydronic radiant floor systems can influence a project’s score on the Active House Radar, providing valuable insights into the benefits of this innovative technology.

Whether you’re an architect, builder, or simply interested in cutting-edge sustainable solutions, this episode is a must-listen.

Years Established

Systems Installed

Check out our latest installation project sent from a customer. Click to navigate gallery. 

Who can install Thermalboard?

You can! We make it easy! 

If you have good carpentry skills, you can install Thermalboard by reading our Installation Manual, studying the CAD drawing layout for your project, and viewing different installation videos of Thermalboard product. We are here to answer any questions! 

Thermalboard Design & Layout Services

Layout & Design Services

In your custom project quotation, we offer our radiant panel and tubing design layout service. This is highly recommended, saving time and money. Included: Thermalboard panel layout, radiant tubing layout, zoning selection and manifold location

Product Comparisons

Thermalboard VS
Gypsum Concrete Pour

Thermalboard is more efficient than gypsum concrete, responds more rapidly, easily installs in the flow of your project and, in many cases, is less expensive. See the project cost comparison.

Full Comparison

Thermalboard VS
Quik Trak and Climate Panel

Thermalboard is significantly more efficient than Quik Trak. It is also lower in cost and provides a higher performance and easier installation. Click below to see a full comparison between Thermalboard & Quik Trak / Climate Panel.

Full Comparison

Thermalboard VS
Radiantec Underfloor

While underfloor heating may be accessible to certain DIY clients, systems where radiant tubing is installed below a sub-floor are at a significant performance disadvantage. Click the link below for a detailed comparison

Full Comparison


Here are some questions that often arise. Feel free to call us any time with any questions!

What kind of radiant tubing should I use?
One should use standard 3/8” barrier PEX tubing from any number of manufacturers. Do not use PEX-AL-Pex as it will become an oval when inserted in the grooves instead of rebounding to fill the slightly undercut grooves in Thermalboard. Standard PEX will expand into the groove creating a strong, silent connection enhancing thermal transfer.
Who should install Thermalboard?
Thermalboard is typically installed by the general contractor with basic carpentry skills. A licensed radiant floor heating mechanical or plumbing contractor should install the heat source, distribution piping, pumps, controls etc.
When is ThermalBoard installed?
ThermalBoard is typically installed just prior to the installation of finished flooring goods. Store ThermalBoard on the job site in a dry, cool space and it is ready to be installed with delays, in the natural progression of construction.
Can all flooring goods be used over Thermalboard?

Yes. Consult the Thermalboard manual for the details regarding the application of flooring goods.

Does Thermalboard outgas formaldehyde?

Thermalboard Sustainable Substrate. No VOC. Zero formaldehyde.

The substrate is constructed from 92% pre-consumer recycled content and meets LEED® v4 Criteria, with zero formaldehyde and no VOCs. Additionally, Thermalboard is laminated with aluminum which does not permit the large formaldehyde molecules to pass, even if formaldehyde were present.

Douglas Danner

Get Your Free Project Estimate

Delivered Factory Direct to your Jobsite

Call Doug at (866) 414–7244 for more information