Pro Clima's exterior weather resistant membrane (WRB) and roof underlayment (the SOLITEX system) incorporates a monolithic TEEE* film. This membrane, unlike conventional WRBs, has no pores and is completely waterproof and wind/airtight. This material actively transports the vapour outward by passing it along its molecular chain of monolithic membrane (see image above) - a property of the TEEE material. Therefore, if vapour/water is present on the interior of the membrane, even the slightest vapour pressure differential (inside to outside) will engage the chain reaction and dry out the water/humidity. Consequently, the membrane, unlike conventional housewraps, is very vapour open (38 perms, Sd-value 0,05m) in every condition. Conventional housewraps and WRBs depend on creating a micro-porosity in a normally vapour closed material (PE or PP). In the production process these materials are made vapour open by either spunbonding them into a PE mesh, puncturing the PP or stretching the PP with NaCi additives in production. These micro-pores then allow water vapour molecules to be moved through the water-resistant layer by convection (leaking through the micro-pores).

---

 

Use the Weather Resistive Barrier Cheat Sheet to choose from a variety of SOLITEX WRBs

---

Product	Fastening	Permeability	UV exposure rating
	Stapled, taped with TESCON VANA	38 perms	3 months
	Application: Wall Airtight, vapour open WRB
Product	Fastening	Permeability	UV exposure rating
	Spray, roll, brush-on, or use AEROFIXX tool	Variable: 0.33 to 25 perms	3 months
	Application: Wall. Air barrier and WRB for both interior exterior airbarriers on cmu masonry difficult to seal junctions in any project.
Product	Fastening	Permeability	UV exposure rating
	Stapled, taped with TESCON INVIS	38 perms	6 months
	Application: Wall This 3-layer dark black WRB is meant for open joint siding, and is long-term UV stable.
Product	Fastening	Permeability	UV exposure rating
	Stapled, taped with TESCON INVIS	17 perms	6 months
	Application: Wall A step up from the already durable QUATTRO, this 5-layer, dark black WRB is an even more rugged membrane for open-joint, long-term UV stability.
Product	Fastening	Permeability	UV exposure rating
	Stapled, taped with TESCON VANA	38 perms	4 months
	Application: Wall + Roof Reinforced membrane for dense packing insulation without the need for exterior sheathing.
Product	Fastening	Permeability	UV exposure rating
	Stapled, taped with integrated adhesive strip	38 perms	3 months
	Application: Roof Standing seam metal roofing underlayment with integrated 3-D mesh to provide drainage.
Product	Fastening	Permeability	UV exposure rating
	self-adhered - use PRESSFIX XL tool	8 perms	<3-6 months (see product details)
	Application: Wall + Roof Commercial grade self-adhered airbarrier / WRB for gypsum boards, or plywood.
Product	Fastening	Permeability	UV exposure rating
	Stapled, taped with TESCON VANA	Variable: 0.13 to 13 perms	2 months
	Application: Wall + Roof Airtight commercial grade, heavy-duty, smart vapour retarder that doubles as temporary WRB - use inboard of primary insulation layer.
Product	Fastening	Permeability	UV exposure rating
	Stapled, taped with integrated adhesive strip	38 perms	4 months
	Application: Roof Underlayment for pitched roofs with integrated adhesive strip. Making application easy and requires far less tape.