Mitten›Henry Blueskin

Blueskin WB Window & Door Flashing

Name: Exterior Pro Materials
Address: Unit 5, 1235 Journey's End Cir, Newmarket, ON, L3Y 8T7, CA
Telephone: +1 (905) 836-7272

Blueskin WB is a self-adhered SBS rubberized asphalt flashing membrane for window and door rough openings, sheathing joints, and skylights. It bonds directly to OSB, plywood, concrete, and metal surfaces without flame or adhesive, provides an air and vapour-impermeable seal, and self-seals around nails and screws. Available in 4", 6", 9", and 12" widths at 15.1 m (50 ft) per roll.

0.9 mm (35 mils)

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WarrantyRefer to Henry Company warranty terms

Profiles & Specifications

HE200WBBlueskin WB Window & Door Flashing

Self-adhered SBS rubberized asphalt membrane laminated to a blue engineered polypropylene film. Designed for window and door rough openings, sheathing joints, skylights, and anywhere a weather-tight air and vapour barrier seal is required. Peel-and-stick — no flame or adhesive required. Self-seals when penetrated with nails or screws. Available in four roll widths: 4" (100 mm), 6" (150 mm), 9" (225 mm), and 12" (300 mm).

Roll Widths	4" (100 mm) · 6" (150 mm) · 9" (225 mm) · 12" (300 mm)
Roll Length	15.1 m (50 ft)
Thickness	0.9 mm (35 mils)
Top Surface	Blue polypropylene film
Bottom Surface	Siliconized release film
Application Temp	Minimum –12°C (10°F)
Service Temp Range	–40°C to +70°C (–40°F to 158°F)
Min. Lap	50 mm (2") on all side and end laps
Manufacturer	Henry Company — distributed by Mitten

Specifications

Physical Properties

Property	Value	Test Method
Thickness	0.9 mm (35 mils)	—
Colour	Blue	—
Elongation	200% minimum	ASTM D412 (modified)
Tensile Strength — Membrane	3.4 MPa min (490 psi)	ASTM D412 (modified)
Tensile Strength — Film	40 MPa min (5,800 psi)	ASTM D882
Puncture Resistance	178 N min (39 lbf)	ASTM E154
Low Temp Flexibility	Pass @ –30°C (–22°F)	CGSB 37-GP-56M
Water Vapour Transmission	2.8 ng/Pa·m²·s (0.05 perms)	ASTM E96
Lap Peel Strength @ 4°C	1,750 N/m width	ASTM D903
Moisture Absorption	0.1%	ASTM D570
Air Leakage @ 75 Pa	0.02226 L/s·m² (0.00005 CFM/ft²)	ASTM 2178

Packaging

Roll Width	Length	Thickness
4" (100 mm)	15.1 m (50 ft)	0.9 mm (35 mils)
6" (150 mm)	15.1 m (50 ft)	0.9 mm (35 mils)
9" (225 mm)	15.1 m (50 ft)	0.9 mm (35 mils)
12" (300 mm)	15.1 m (50 ft)	0.9 mm (35 mils)

Compatible Substrates

Substrate	Notes
OSB / Plywood	Install OSB smooth side out for best adhesion
Gypsum Board	Standard application
Concrete / Concrete Block	Must be cured min. 14 days, dry, smooth, no voids
Primed Steel	Standard application
Aluminum (mill / anodized)	Standard application
Galvanized Metal	Standard application

For best adhesion results, especially in cold weather (<10°C/50°F), prime with Blueskin Spray Prep Primer (aerosol) or Aquatac Primer by roller or brush. Coverage rate varies by substrate porosity: 1 litre per 2–6 m² (500 ft²/gal). Allow primer to thoroughly dry, then apply Blueskin WB the same day.

Order quantities and lead times may vary. Contact us for availability.

Certifications & Testing Standards

Blueskin WB Window & Door Flashing meets or exceeds the following Canadian and international performance standards.

Test / Property	Standard	Result / Value
SBS rubberized asphalt — meets CGSB 37-GP-56M (Low Temperature Flexibility @ –30°C)	-	Certified
Air leakage tested per ASTM 2178 — 0.02226 L/s·m² @ 75 Pa	-	Certified
Water vapour transmission tested per ASTM E96 — 0.05 perms (vapour impermeable)	-	Certified
Tensile and elongation tested per ASTM D412, D882, and D903	-	Certified
WHMIS: Not classified or controlled (Canada)	-	Certified
Non-flammable — NFPA: Health 0 · Flammability 1 · Reactivity 0	-	Certified
Manufactured by Henry Company, El Segundo CA / Scarborough ON · Distributed by Mitten Inc.	-	Certified

Installation Guide

STORAGE — Store rolls on end in original packaging. Protect from weather or store in an enclosed area not subject to heat over 49°C (120°F).
SURFACE PREP — Acceptable substrates: precast concrete, cast-in-place concrete, concrete block, primed steel, aluminum (mill finish or anodized), galvanized metal, gypsum board, and wood. All surfaces must be clean of oil, dust, and excess mortar. Strike masonry joints flush. Concrete must be smooth, without large voids, spalled areas, or sharp protrusions, cured a minimum of 14 days, and dry at time of application. Where curing compounds are used, they must be clear resin based — no oil, wax, or pigments. Install OSB with the smooth side out for best adhesion.
PRIMING — For best adhesion results (especially in cold weather <10°C/50°F), prime surfaces with Blueskin Spray Prep Primer (available in aerosol spray cans) or Aquatac Primer applied by roller or brush at 1 litre per 2–6 m² (500 ft²/gal) depending on porosity and texture. Allow primer to thoroughly dry before applying membrane. Apply Blueskin WB the same day the primer is applied. Tip: dry primer provides a firm bond to the substrate and cannot be easily rubbed off with your fingertip.
ALIGN — Position membrane for alignment with the protective film in place before removing the release liner.
APPLY — Roll back and remove the protective film, then press the membrane firmly in place. Once the membrane is entirely in place, apply firm pressure over the entire surface to ensure full contact. When using membrane with brick ties, position membrane, press in place, and cut for ties or projections. Membrane applied to the underside of a substrate (e.g. ceilings) requires mechanical fastening through treated wood or galvanized metal strapping immediately after installation.
LAP — Membrane must be lapped a minimum of 50 mm (2") on all side and end laps. Orient laps shingle-fashion to shed water.
LIMITATIONS — Do not use in direct contact with flexible PVC/vinyl membranes. Membrane is rated for up to six weeks of UV exposure but is not designed for permanent exposure to ultraviolet light — cover as soon as practical after application. Some sealants may discolour or be softened by contact with the asphalt compound — contact the sealant manufacturer for compatibility information.

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