Below Grade Rigid Applications
For exceptional, long-lasting performance in below grade applications, no EPS or XPS competitive product digs deeper than ThermalStar® X-Grade.™ With its outstanding thermal and physical properties, durable ThermalStar® X-Grade™ protects foundation walls during backfilling, while providing excellent insulating performance. Patent pending integrated termite resistance assures peace of mind.
It’s Orange or It’s Ordinary™
What sets ThermalStar® X-Grade™ rigid insulation apart? Outstanding performance and exceptional value. ThermalStar® X-Grade™ rigid insulation maintains its superior thermal and mechanical properties over time — including R-value and moisture resistance — to provide long-term stability and protect your installation for years to come.
An excellent value when compared to other rigid insulation products! For performance you can trust and value you’ll appreciate, specify ThermalStar® rigid insulation for your next project.
Long-Lasting Thermal Performance
ThermalStar® X-Grade™ has been proven to absorb minimal moisture. Also, unlike other insulation products, ThermalStar® X-Grade™ is a “breathable” material. This breathability ensures long-term performance. In fact, a 15-year comparative study of actual field applications of below grade insulation confirms the R-value is retained.
Integrated Termite Resistance
Termites can do serious damage to untreated building materials. With ThermalStar® X-Grade,™ a proven termiticide is integrated into the chemistry of the product and is not a surface coating. US building code requires that rigid foam demonstrate resistance against termite attack when used below grade. In many states, X-Grade™ is approved for this use — see ICC-ES Evaluation Report (.pdf).
ThermalStar® below grade products for vertical on foundation walls and under slab applications are available in a range of compressive strength grades and standard and custom sizes.
X-Grade™ 15, 25, 40, 60 (below grade insulation) — Vertical on foundation walls, under slab applications:
- Typical size is 4′x8′, other sizes are available upon request, including 4′x4′, 2′x8′, 4′x9′ and 4′x10′
- Thicknesses available from 1/2″ to 32″
- Products between 1″ and 3-1/2″ are scored for easy snapping into 16″ and 24″ wide panels
Recycle-Board™ — Sheets & Fanfold (below grade protection) — Vertical on foundation walls, under slab applications:
- Recycle-Board™ is available with up to 40% recycled material and the remaining is recovered expandable resin
- Durable polymer faces both sides
- Typical sheet size is 4′ x 8′, but other sizes are available upon request
- Fanfold is typically available 4′ x 50′
- Both sheets and fanfold are available from 3/8″ thick to 3″
