Intelligent high performance vapor retarding WRB membrane for airtight construction. For exterior, weather exposed application during construction or renovation.

Next generation exterior grade smart vapor retarder is INTELLO X. INTESANA orders may be substituted with INTELLO X at our discretion. 

>>Read More

Quantity Discounts
1-19 >> Pallet (20)
352 >> please inquire

In stock

Next generation smart vapor retarder INTELLO X was launched 11-2017. We recommend you purchase this new product via INTELLO X product page. If purchasing INTESANA after 11-15-17, INTESANA orders might be substituted with INTELLO X at our discretion.


INTESANA is a smart vapor retarder and WRB in one, that provides a first class air-barrrier for thermal insulation in roofs, walls and floors. It is very suitable for application on the exterior of walls and roofs, when adding insulation on the exterior of it – both in new construction and renovation. Is very waterproof and can be left exposed to element for 3 months, which allows you to weather proof your project in one quick step during construction.

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 it’s intelligent vapor retarding properties. Retarding in winter (0.17 perm), while it can open up when needed it summer (>13perm) (

• More than 8’4″ (2.5m) of watercolumn – very waterproof
• Offers high diffusion tightness in winter (0.17 Perm, protection against condensation).
• Maximum diffusion openness in summer (13.20 Perm, facilitates rapid drying to the interior).
• Can be used as a temporary roof or WRB.
• Fully recyclable
• Flame Spread Index (FSI): 0 (per ASTM E84)
• Smoke Developed Index (SDI): 105 (per ASTM E84)

Especially suitable for structures with lower permeability on the exterior which are difficult to protect from condensation (flat or grass roofs or metal sheeting etc) or renovations that need to be quickly made waterproof. Lightweight and easy to install, especially compared to ZIP/OSB/Plywood or tar paper.

• Roll width: 59-1/16” (1.50m)
• Roll length: 164’-1/2” (50m)
• Roll area: 807 SF (75 m2)

Download Links:

  • INTESANA Specifications (PDF)
  • Installation instructions (PDF)
  • INTESANA Specifications (PDF)
  • Intelligent vapor control system brochure (PDF)
  • INTESANA/INTELLO installation instructions (PDF)
  • 3 part spec – interior air- and vapor control layer (PDF)
  • 3 part spec – interior air- and vapor control layer (DOCX)
  • The INTESANA Primer
  • Foam-Free DeepEnergyRetrofit: Series Introduction
  • Foam-Free DER:Roof Assemblies
  • Foam-Free DER: Wall & Foundation Assemblies
  • DWG Construction Details for Deep Energy Retrofit (DER) Foam-Free Assemblies
  • Rowe Hill: Foam-Free Deep Energy Retrofit (DER) by Maine Passive House
  • Building Drying Reserves: 8 Situations Made for INTELLO PLUS Smart Vapor Retarder
  • Related Videos:

  • Importance of vapor intelligence