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InsulHeat Underslab: The Smart, Fast, and Reliable Insulation Solution for Concrete Slab Heating

Slash Installation labor cost of underslab insulation, vapor barrier and Pex tubing.

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Faster Installation, Lower Labor Costs

Reduce Downward Heat Loss

Fast Pex Installation

Cost-Effective and Factory Direct

What is InsulHeat Underslab

InsulHeat Underslab Radiant Floor Heating Panels combine rigid  insulation, a vapor barrier and a PEX tubing locking mechanism into a single  solution that significantly reduces installation time. The patented “mushroom” shaped nubs lock PEX tubing in place without staples or zip ties.

Four-sided interlocking connectors
Durable HIPS film acts as a vapor barrier
Bridge connectors ensure even heat distribution
Mushroom nubs securely lock tubing
No need for concrete dobies
Easier installation and higher compression than blueboard

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Efficiency, Durability, and Innovation in Every Panel

InsulHeat Underslab combines advanced design with high-performance materials to ensure the success of your radiant heating system. Each panel is engineered to simplify installation, enhance energy efficiency, and provide lasting durability. Discover the features that set InsulHeat Underslab apart and make it the ideal solution for your concrete slab heating needs.

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Dimensions	24” x 48” x 3-3/8”
R-Value	R-10
Accommodates Tubing Sizes	3/8″, 1/2″, 3/4″, 1″
Compressive Strength	30 psi (207 kPa)
Vapor Permeance	0.42 US perms (23.8 ng/Pa.s.m²)
Coverage	Minimum 10 boards per bag (80 ft²)

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InsulHeat Underslab Installation

STEP 1
Start from the far-left corner and work from left to right. Lay down the first panel so that the exposed interlock is to the right side and forward (panels can be placed down either along the length or width of the outer wall).

STEP 2
Continue to lay the panels ensuring that they are properly interlocked and are snug and aligned.

STEP 3
Start the next row with half a panel. This will stagger the seams, creating a running bond and ensuring that panels are properly interlocked and aligned.

STEP 4
Continue to lay the panels ensuring that they are properly interlocked and are snug and aligned.

STEP 5
Use the second half of the cut panel to finish the row.

STEP 6
It may be necessary to cut the panels to accommodate columns or walls.

STEP 7
Continue to place the rows of panels maintaining a staggered running bond layout.

STEP 8
Install the PEX piping by walking it into the nubs of the panels according to the design layout.

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Let Us Discuss Your Underslab Radiant Application Today!

We are here to help you select the right panels for your radiant heat application. Give us a call.

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877-924-3899

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Get the Details You Need For A Flawless Installation

Download the comprehensive installation guide and technical data sheet to ensure a seamless setup and understand every specification of InsulHeat Underslab.

InsulHeat Data Sheet

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InsulHeat Installation

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Frequently Asked Questions

How do I buy InsulHeat Underslab?

You can purchase InsulHeat Underslab directly from us by requesting a free project quote. We ship factory-direct to your job site with fast and reliable shipping. Simply click the “Request a Free Quote” button, provide your project details, and we’ll send you a customized quote, including freight costs.

Can InsulHeat Underslab heat all types of rooms?

Yes! InsulHeat Underslab is designed to work in a variety of spaces, from residential homes to commercial and industrial buildings. Whether you’re heating a basement, garage, workshop, office, or large commercial space, InsulHeat provides even and efficient heat distribution.

When is InsulHeat Underslab installed?

InsulHeat Underslab is installed before pouring the concrete slab. The panels are laid out on the prepared subgrade, and the PEX tubing is secured in the integrated locking system. Once the tubing is in place, concrete is poured directly over the panels, embedding the heating system within the slab.

Is InsulHeat Underslab really that efficient?

Absolutely! InsulHeat features high-density insulation (R-10) that significantly reduces heat loss to the ground. It also includes an integrated vapor barrier to protect against moisture and ensure long-term energy efficiency. This combination helps maintain optimal heating performance while lowering energy costs.

Will InsulHeat Underslab heat the surface evenly?

Yes! InsulHeat’s bridge connectors improve heat distribution, ensuring warmth spreads evenly across the entire slab. Unlike traditional methods, which can lead to cold spots, InsulHeat’s design promotes consistent and uniform heating.

Is Aluminum Laminate in the grooves of InsulHeat Underslab?

No, InsulHeat Underslab does not contain aluminum laminate in the grooves. Instead, it utilizes high-performance insulation with a built-in vapor barrier and a PEX tubing locking system for optimal heat retention and efficiency.

How long does it take to install InsulHeat Underslab?

Installation is faster and easier compared to traditional methods. Since the panels include an integrated PEX locking mechanism, installers can skip staples, zip ties, and concrete dobies, significantly reducing labor time. Depending on the project size, installation can typically be completed in a fraction of the time compared to conventional blue board systems.

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Experience the benefits of InsulHeat Underslab—faster installation, superior efficiency, and long-lasting performance

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