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Intello Plus – Intelligent Interior Membrane


Airtightness, smart vapor control, and dense-pack reinforcement all in one.

INTELLO Plus is the keystone to long-lasting air and vapor control on the inside of a home.

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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 unachievable degree of protection from structural damage (from condensation), even under extreme climatic conditions, due to its intelligent vapor retarding properties.

Intello is installed as part of a system of airtightness for your enclosure. Use TESCON VANA to tape the INTELLO overlaps and airseal holes. Use gaskets and sealants to airseal duct, pipe and wire penetrations through Intello.

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


Short – 1.5 m x 20 m (59” x 65′ 7″); Roll area: 30 m2 (322 sf)
Standard – 1.5 m x 50m (59″ x 164′) ; Roll area: 75 m2 (807 sf)



• Perm rate from 13.20 to <0.13 (Sd value from 0.25 m to >25 m)
• Offers high diffusion tightness in winter (<0.13 Perm, protection against condensation)
• Maximum diffusion openness in summer (13.2 Perm, facilitates rapid drying to the interior)
• 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
— Use TESCON VANA Patches to cover holes from blown-in insulation
• Lightweight and easy to install, especially compared to OSB/Plywood
• Fully recyclable
• Air permeance per ASTM E2178 0.00005cfm/ft2
• Class A material per ASTM E84 test (0 FS, 35 SDI)
•  PHI Class A Passive House Component Certificate

When exposure of INTELLO Plus to UV and rain cannot be avoided/minimized, because of scheduling/design constraints – use INTELLO X, which has same smart vapor retarding properties, but is rated for 2 month exterior exposure and is waterproof.

Additional information

Weight 19.84 lbs
Dimensions 61 × 7 × 7 in

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