Product insights, building science, installation guidance, and project resources from Halo.
PRODUCT PERFORMANCE
What Is GPS? Graphite Polystyrene (GPS) is a type of polystyrene foam insulation and is the insulation material that forms the core of Halo’s Interra®, Exterra®, and Subterra® panels. GPS…
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At A Glance Compare internal vs. external house wrap placement with ExterraKey pros and cons for moisture protection and dryingHow flashing, repairs, and durability are impactedWhy builder preference plays a major role in decision-makingPractical…
Learn MoreAt A Glance What WUFI hygrothermal analysis is—and why it mattersHow Halo Exterra supports moisture and thermal performanceWhy WUFI modeling is a…
Learn More“Halo Exterra is a higher-end product that saves us real time on the job — we don't have to install house wrap over the top. The built-in vapor facer is a great feature that adds value without adding steps.”
— Dave Hall, Dave Hall Construction, Holmen, WI
At A Glance How IRC R703.15 governs cladding over foam sheathingWhy 15 psi is standard—and how 10 psi qualifies with testingHow Halo…
Learn MoreCrawl spaces are a huge market in the USA. In states like Tennessee, Kentucky, Virginia, Maryland, North Carolina, and many others, crawl spaces are commonly found in newly built homes. Crawl space renovation is…
Learn MoreAt A Glance Building codes require ceiling assemblies to include an air control layer.When properly sealed, Halo® Interra doubles as both insulation…
Learn More“Halo Interra delivers a great amount of efficiency for the cost — that's the most valuable feature for us. I've always hated putting up vapor barrier on ceilings, and Interra eliminates that step entirely since the facer is already built in.”
— Grant Anderson, Titan Results Construction, Isanti, MN
Where Should Halo Interra Be Installed When Insulating a Roof? Halo Interra should be installed on the underside of the ceiling joists…
Learn MoreIf you’re wondering whether installing Subterra or Subterra Plus on a foundation wall is a hassle, let us put your mind at ease — it’s really not. And while there are some nuances you should keep in mind,…
Learn MoreAt A Glance Subterra and Subterra Plus are GPS under-slab insulation solutions, with Plus featuring a tougher laminate and radon barrier performance.GPS…
Learn More“When we were figuring out how to insulate our rotunda foundation, Halo Subterra Plus was the only product we could find that would actually bend around the curve. It attached easily, and as an added bonus, it gave us a stable R-value.”
— Jeff Sykes, Homeowner, Cresco, IA
At A Glance How to use Halo Subterra load charts for slab designKey factors: load type, slab thickness, and compressive strengthSimple methods…
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