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INTELLO Plus is a smart vapor retarder that provides a first class air barrier for thermal insulation in roofs, walls and floors. More importantly it gives structural systems a previously un-achievable degree of protection from structural damage (from condensation), even under extreme climatic conditions, due to its intelligent vapor retarding properties.

For example:
• Vapor closed flat/green-roofs
• Unvented pitched roofs (asphalt shingles, OSB sheathing, valleys covered by ice&water shield)
• Mixed humid climates with cold winters and air-conditioning requirements in summer
• Extreme climates such as in high mountain regions or very cold/arctic conditions

Offers the largest vapor variable range available – it additionally opens up at the right moment

With the following properties

• Offers high diffusion tightness in winter (0.13 Perm, protection against condensation)
• Maximum diffusion openness in summer (13.20 Perm, facilitates rapid drying to the interior)
Complies with CAN/CGSB 51.33-M89 (unrolling, sheet dims, pliability, tensile strength, ASTM E96A: 10ng/Pa*sec*m2, aged 12ng/Pa*sec*m2)
• Especially suitable for structures with lower permeability on the exterior which are difficult to protect from condensation (flat or grass roofs or metal siding/sheathing etc)
• Works with wide range of insulation materials, including fiberglass, BIBS, mineral wool and many others.
• Translucent – allows dense packed blown-in cellulose insulation to be inspected after installation.
• Lightweight and easy to install, especially compared to OSB/Plywood
• Fully recyclable
• Air permeance per ASTM E2178 0.0025 L/s*m2 (0.00005cfm/ft2)
• Class A material per ASTM E84 test (0 FS, 35 SDI)

PHI Class A Passive House Component Certificate

Available roll sizes:

  • 323SF – 59″x65.5′ / 30m2 – 1.5x20m(short roll)
  • 807SF – 59″x164′ / 75m2 – 1.5x50m(regular roll)
  • 1614SF – 118″x164′ – XL – 150m2 – 3.0x50m(folded off center, so you can staple it up, before folding it down
  • Declare Intello

    Download Links

  • INTELLO Plus Specifications (PDF)
  • INTELLO Plus installation instructions for wood stud assemblies (PDF)
  • Install Video
  • INTELLO Plus Specifications (PDF)
  • INTELLO intelligent vapor control system brochure (PDF)
  • INTELLO Plus installation instructions for wood stud assemblies (PDF)
  • 3 part spec – interior air- and vapor control layer (PDF)
  • 3 part spec – interior air- and vapor control layer (DOCX)
  • PHI Class A Passive House Component Certificate
  • How to install dense pack cellulose behind INTELLO
  • BLDGTYP details/photos of 0.45 ACH50 cabin in WI with a double stud wall, INTELLO Plus and dense-pack cellulose
  • buildinggreen.com – Smart Vapor retarders not just your grandmother’s poly
  • INTELLO Plus transforms assisted living facility in Mashpee, MA
  • 475 VIDEO: The INTELLO Plus Tear Test
  • The INTELLO Primer
  • INTELLO Plus compliant with National Building Code of Canada 2010 + ON & BC Building code 2012
  • Installation Videos:

  • Installing INTELLO PLUS In Wood Frame Buildings With Batt Insulation
  • Installing INTELLO PLUS In Wood Frame Buildings With Blown-In Insulation [Coming Soon]
  • Related Videos:

  • 475 VIDEO: The INTELLO Plus Tear Test
  • The INTELLO Primer
  • PDF Installation Guide:

  • INTELLO Plus installation instructions for wood stud assemblies (PDF)
  • Air-Sealing System
    475 High Performance Building Supply

    475 High Performance Building Supply