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Product Details for "Stef Premium II, Stef Premium Drainscreen, Stef Green, Stef Green Plus and Stef Impermea"
System	System Components
System	Intended Substrate	Insulation	WRB^{Footnote (1)}	Mechanical Fasteners^{Footnote (2)}^, ^{Footnote (3)}	Adhesive	Base Coat^{Footnote (4)}^, ^{Footnote (5)}	Primer	Finish Coat
Stef Premium II	plywood/OSB concrete masonry glass-mat-surfaced gypsum sheathing cement board	Stef Flat Insulation Board	modified bituminous membrane	Wind-Lock/Wind-Devil 2	–	Stef Base Coat	Stef Roll-On	Stef Finish
Stef Premium Drainscreen	plywood/OSB, concrete masonry glass-mat-surfaced gypsum sheathing cement board	Stef GD Drainage Board	modified bituminous membrane	Wind-Lock/Wind-Devil 2	–	Stef Base Coat	Stef Roll-On	Stef Finish
Stef Impermea	plywood/OSB concrete masonry glass-mat-surfaced gypsum sheathing cement board	Stef GD Drainage Board	Stef-Tek	–	Stef-Tek Stef Prep Coat	Stef Prep Coat	Stef Roll-On	Stef Architectural Coat
Stef Green	concrete masonry glass-mat-surfaced gypsum sheathing cement board	Stef Flat Insulation Board	Stef Barrier Plus Stef-Tek	–	Stef Prep Coat	Stef Prep Coat	Stef Roll-On	Stef Architectural Coat
Stef Green Plus	concrete masonry glass-mat-surfaced gypsum sheathing cement board	Stef GD Drainage Board	Stef Barrier Plus Stef-Tek	–	Stef Prep Coat	Stef Prep Coat	Stef Roll-On	Stef Architectural Coat

Notes:

Footnote 1

The WRB consists of a single layer of "SOPRASEAL STICK 1100 T" or equivalent installed continuously over all water-sensitive substrates and around penetrations and openings to provide, along with other built-in features, the second line of defense against water infiltration reaching the structure. The WRBs must be applied in accordance with the "Stef Premium II, Stef Premium Drainscreen" installation specifications referenced in Section 3 of this Report. The continuity of the second plane of protection across joints and junctions at openings, penetrations and expansion joints must be maintained through accessories, such as self-adhering membranes, tapes, etc., as specified by the manufacturer, prior to the installation of these systems.

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Footnote 2

Mechanical fasteners are intended to be used in conjunction with the products when they have a self-adhered modified bituminous membrane as the WRB. Fastening of the insulation board to the substrates must precede the application of the reinforcing mesh.

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Footnote 3

"Stef Mechanical Fasteners" have been tested and proven to be self-sealing in conjunction with the self-adhered modified bituminous membrane.

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Footnote 4

The required thickness of the base coat depends on the number of layers and the type of reinforcing mesh used. The final thickness of the base coat must be sufficient to fully embed the "Stef Fiberglass Mesh" in the base coat so that no mesh is visible.

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Footnote 5

Higher-grade meshes are intended to be used in areas requiring high-impact resistance. All three grades of "Stef Fiberglass Mesh" may be used in the field of the walls in conjunction with "Stef Exterior Insulation and Finish System (Premium II/Premium Drainscreen)."

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Results of Testing of Ash Content of the Products
Property	Product	Unit	Requirement	Result
Ash content	Stef-Tek	%	Report value	40.50
	Stef Barrier Plus	%	Report value	66.67
	Stef Barrier Plus + Cement^{Footnote (1)}	%	Report value	88.03
	Stef Prep Coat	%	Report value	52.69
	Stef Prep Coat + Cement^{Footnote (1)}	%	Report value	92.7
	Stef Architectural Coat	%	Report value	89.20
	Stef Base Coat	%	Report value	87.16
	Stef Base Coat + Cement^{Footnote (1)}	%	Report value	94.28
	Stef Finish	%	Report value	67.13

Results of Testing of Infrared Analysis of the Products
Property	Product	Requirement	Result
Infrared analysis	Stef-Tek	Report value	Report on file
	Stef Barrier Plus	Report value	Report on file
	Stef Prep Coat	Report value	Report on file
	Stef Architectural Coat	Report value	Report on file
	Stef Base Coat	Report value	Report on file
	Stef Finish	Report value	Report on file

Results of Testing of Adhesion Bond of WRB to Substrates other than Plywood/OSB
Property	Product		Unit	Requirement	Result
Adhesion bond (WRB to substrates other than plywood/OSB)	Stef Barrier Plus to cement board	dry state	MPa	≥ 0.25	0.72
		2-h drying	MPa	≥ 0.8	0.48
		7-d drying	MPa	≥ 0.25	0.58
	Stef Barrier Plus to DensGlass	dry state	MPa	≥ 0.25	0.3
		2-h drying	MPa	≥ 0.08	0.1
		7-d drying	MPa	≥ 0.25	0.36
	Stef-Tek to concrete	dry state	MPa	≥ 0.25	0.48
		2-h drying	MPa	≥ 0.08	0.52
		7-d drying	MPa	≥ 0.25	0.54
	Stef-Tek to DensGlass	dry state	MPa	≥ 0.25	0.36
		2-h drying	MPa	≥ 0.08	0.18
		7-d drying	MPa	≥ 0.25	0.33

Results of Testing of Adhesion Bond of Adhesive to WRB
Property	Product		Unit	Requirement		Result
Adhesion bond (Adhesive to WRB)	Stef Barrier Plus to Stef Prep Coat	dry state	MPa	No detachment at bonding plane @	≥ 0.25	1.08
		2-h drying	MPa	No detachment at bonding plane @	≥ 0.08	0.41
		7-d drying	MPa	No detachment at bonding plane @	≥ 0.25	1.02

Results of Testing of Lamina Bond Strength
Property	Product		Unit	Requirement		Result
Adhesion bond (lamina)	Stef Prep Coat to insulation	dry state	MPa	No detachment at bonding plane @	≥ 0.25	0.39
		2-h drying	MPa	No detachment at bonding plane @	≥ 0.08	0.19
		7-d drying	MPa	No detachment at bonding plane @	≥ 0.25	0.28
	Stef Prep Coat to Stef Architectural Coat	dry state	MPa	No detachment at bonding plane @	≥ 0.25	0.43
		2-h drying	MPa	No detachment at bonding plane @	≥ 0.08	0.18
		7-d drying	MPa	No detachment at bonding plane @	≥ 0.25	0.39
	Stef Base Coat to Stef Finish	dry state	MPa	No detachment at bonding plane @	≥ 0.25	0.16
		2-h drying	MPa	No detachment at bonding plane @	≥ 0.08	0.18
		7-d drying	MPa	No detachment at bonding plane @	≥ 0.25	0.20

Results of Testing of Water Vapour Permeance (WVP) of Lamina
Property	System Component	Unit	Requirement	Result
Water vapour transmission	Stef Barrier Plus^{Footnote (1)}	ng/(Pa·s·m²)	Report value	561
	Stef Base Coat^{Footnote (1)}	ng/(Pa·s·m²)	Report value	125
	Stef Finish^{Footnote (2)}	ng/(Pa·s·m²)	Report value	78
	Stef Prep Coat^{Footnote (1)}	ng/(Pa·s·m²)	Report value	166

Results of Testing of Water Absorption
Property		Unit	Requirement	Result
Water absorption	Stef Base Coat	%	≤ 20 of the dry weight	11.6
	Stef Prep Coat	%	≤ 20 of the dry weight	14
	Stef Prep Coat + Stef Architectural Finish	%	≤ 20 of the dry weight	11.8

Results of Testing of Water Absorption Coefficient of WRB
Property	Product	Unit	Requirement	Result
Water absorption coefficient of WRB	Stef Barrier Plus @ 72 h	kg/(m².s^1/2)	≤ 0.004	0.0035

Results of Testing for Impermeability to Water
Property		Unit	Requirement	Result
Impermeability to water	Stef Base Coat	h	No water penetration in less than 2 h	Pass
	Stef Base Coat + Stef Finish	h	No water penetration in less than 2 h	Pass
	Stef Prep Coat	h	No water penetration in less than 2 h	Pass
	Stef Prep Coat + Stef Architectural Finish	h	No water penetration in less than 2 h	Pass

Results of Testing of Accelerated Weathering Resistance of the Products
Property	System Component	Requirement	Result
Accelerated weathering resistance @ 2000 hours	Stef Base Coat and Stef Finish	No cracking, flaking or deleterious effects	Pass
Accelerated weathering resistance @ 2000 hours	Stef Prep Coat + Stef Architectural Finish	No cracking, flaking or deleterious effects	Pass

Results of Testing of Salt Spray Resistance of the Products
Property	System Component	Requirement	Result
Salt spray resistance @ 300 hours	Stef Base Coat and Stef Finish	No water penetration in less than 2 h	Pass
Salt spray resistance @ 300 hours	Stef Prep Coat + Stef Architectural Finish	No water penetration in less than 2 h	Pass

Results of Testing for Mildew and Fungus Resistance
Property		Unit	Requirement	Result
Mildew and fungus resistance	Stef Architectural Coat	-	No growth	Pass
Mildew and fungus resistance	Stef Finish	-	No growth	Pass

Results of Testing of Durability Under Environmental Cycling Conditions of the Products
Property	System	Unit	Requirement		Result
Preconditioning (drainage evaluation)	Stef Premium Drainscreen	L	Report water quantity	introduced	13.5
Preconditioning (drainage evaluation)	Stef Premium Drainscreen	L	Report water quantity	drained	12.9
Preconditioning (drainage evaluation)	Stef Premium Drainscreen	L	Report water quantity	retained	0.6
Environmental cycling (60 cycles)	Stef Premium Drainscreen	–	No cracking, blistering or sagging of base coat, and no detachment or crazing of finish coat		Pass
Adhesion bond strength after environmental cycling(base coat)	Stef Premium Drainscreen	MPa	≥ 0.08		0.32
Adhesion bond strength after environmental cycling(finish coat)	Stef Premium Drainscreen	MPa	≥ 0.08		0.32
Preconditioning (drainage evaluation)	Stef Green	L	Report water quantity	introduced	13.5
Preconditioning (drainage evaluation)	Stef Green	L	Report water quantity	drained	8.20
Preconditioning (drainage evaluation)	Stef Green	L	Report water quantity	retained	5.30
Environmental cycling (60 cycles)	Stef Green	-	No cracking, blistering or sagging of base coat, and no detachment or crazing of finish coat		Pass
Adhesion bond strength after environmental cycling (base coat)	Stef Green	MPa	≥ 0.08		0.34
Adhesion bond strength after environmental cycling (finish coat)	Stef Green	MPa	≥ 0.08		0.38

Results of Testing of Breaking Strength Resistance of Reinforcement Mesh
Property		Mesh Manufacturer	Unit	Requirement	Result
Property		Mesh Manufacturer	Unit	Requirement	Weft	Warp
Initial strength		Saint-Gobain ADFORS	N/mm	≥ 35	68	50
Loss of strength after	30-d soak		%	≤ 60 for adhered EIFS ≤ 50 for mechanically fastened EIFS	29	28
	60-d soak				38	28
	90-d soak				46	26
Residual strength after	30-d soak		N/mm	≥ 15 for adhered EIFS ≥ 25 for mechanically fastened EIFS	48	36
	60-d soak				42	36
	90-d soak				37	37
Initial strength		Technical Textiles S.R.O.	N/mm	≥35	57	38
Loss of strength after	30-d soak		%	≤ 60 for adhered EIFS ≤ 50 for mechanically fastened EIFS	29	44
	60-d soak				36	56
	90-d soak				35	53
Residual strength after	30-d soak		N/mm	≥ 15 for adhered EIFS ≥ 25 for mechanically fastened EIFS	41	21
	60-d soak				37	17
	90-d soak				37	18

Results of Testing of Impact Resistance
Product		Unit	Requirement	Result
Extra Standard,^{Footnote (1)} min. 200 g/m² mesh	10 joules	J	Six of 10 free-fall drops must show no failure No perforation (broken mesh) No cracks	8/10 Pass
Extra Standard,^{Footnote (1)} min. 200 g/m² mesh	3 joules	J		7/10 Pass
Technical Textiles S.R.O., min. 150g/m² mesh^{Footnote (2)}	10 joules	J		7/10 Pass
Technical Textiles S.R.O., min. 150g/m² mesh^{Footnote (2)}	3 joules	J		7/10 Pass

Results of Testing of Wind Load Resistance of the Products^{Footnote (1)}
Reference Wind Pressure (kPa)	Sustained P₁, P'₁ (Pa)		Cycling P₂, P'₂ (Pa)		Gust P₃, P'₃ (Pa)		Deflection Test Test Pressure (Pa) 2.18 P₁, P'₁	Deflection Test Measured Maximum Net Midspan Deflections (mm) Stud Height 3 050 mm	Deflection Test Measured Maximum Net Midspan Deflections (mm) Sheathing Span 406 mm
Q₅₀ < 0.45	±450	Pass	±660	Pass	±980	Pass	+980	6.4	0.6
Q₅₀ < 0.45	±450	Pass	±660	Pass	±980	Pass	−980	−6.2	−0.8
Q₅₀ < 0.55	±550	Pass	±800	Pass	±1 200	Pass	+1 200	7.9	0.8
Q₅₀ < 0.55	±550	Pass	±800	Pass	±1 200	Pass	−1 200	−7.6	−1.0
Q₅₀ < 65	±650	Pass	±950	Pass	±1 410	Pass	+1 410	9.4	1.0
Q₅₀ < 65	±650	Pass	±950	Pass	±1 410	Pass	−1 410	−9.0	−1.3
Q₅₀ < 75	±750	Pass	±1 090	Pass	±1 630	Pass	+1 630	11.0	1.2
Q₅₀ < 75	±750	Pass	±1 090	Pass	±1 630	Pass	−1 630	−10.4	−1.6
Q₅₀ < 85	±850	Pass	±1 240	Pass	±1 850	Pass	+1850	12.6	1.5
Q₅₀ < 85	±850	Pass	±1 240	Pass	±1 850	Pass	−1850	−11.9	−2.0
Q₅₀ < 1.00	±1 000	Pass	±1 460	Pass	±2 180	Pass	+2180	15.2	2.0
Q₅₀ < 1.00	±1 000	Pass	±1 460	Pass	±2 180	Pass	−2180	−14.3	−2.7
Maximum test pressure @ L/180 deflection (no structural failure)							+2 480	16.9	Not applicable

Results of Testing of Wind Load Resistance of the Products^{Footnote (1)}
Reference Wind Pressure (kPa)	Sustained P₁, P'₁ (Pa)		Cycling P₂, P'₂ (Pa)		Gust P₃, P'₃ (Pa)		Deflection Test Test Pressure (Pa) 2.18 P₁, P'₁	Deflection Test Measured Maximum Net Mid-span Deflections (mm) Stud Height 3 050 mm	Deflection Test Measured Maximum Net Mid-span Deflections (mm) Sheathing Span 406 mm
Q₅₀ < 0.45	±450	Pass	±660	Pass	±980	Pass	+980	5.2	1.4
Q₅₀ < 0.45	±450	Pass	±660	Pass	±980	Pass	−980	−6.0	−1.4
Q₅₀ < 0.55	±550	Pass	±800	Pass	±1 200	Pass	+1 200	6.4	1.7
Q₅₀ < 0.55	±550	Pass	±800	Pass	±1 200	Pass	−1 200	−7.3	−1.7
Q₅₀ < 0.60	±650	Pass	±950	Pass	±1 410	Pass	+1 410	7.5	2.0
Q₅₀ < 0.60	±650	Pass	±950	Pass	±1 410	Pass	−1 410	−8.6	−2.0
Q₅₀ < 0.75	±750	Pass	±1 090	Pass	±1 630	Pass	+1 630	8.6	2.3
Q₅₀ < 0.75	±750	Pass	±1 090	Pass	±1 630	Pass	−1 630	−9.9	−2.3
Q₅₀ < 0.85	±850	Pass	±1 240	Pass	±1 850	Pass	+1 850	9.8	2.6
Q₅₀ < 0.85	±850	Pass	±1 240	Pass	±1 850	Pass	−1 850	−11.3	−2.6
Q₅₀ < 1.00	±1 000	Pass	±1 460	Pass	±2 180	Pass	+2 180	11.6	3.1
Q₅₀ < 1.00	±1 000	Pass	±1 460	Pass	±2 180	Pass	−2 180	−13.3	−3.1
Maximum test pressure @ L/180 deflection							+3 187	16.9	16.9
Maximum test pressure @ L/180 deflection							−2 770	–	–
Ultimate structural test pressure							+3 250	OK	OK
Ultimate structural test pressure							−3 215	Sheathing separation from steel studs occurred	Sheathing separation from steel studs occurred

Results of Testing of Adhesion of WRB to Plywood/OSB Substrates for "Stef-Tek"
Property		Unit	Requirement (No Detachment at Bonding Plane @)	Result
Adhesion bond to OSB	dry state	MPa	0.3	0.40
	1-h soak	MPa	0.3	0.38
	24-hr soak	MPa	0.3	0.34
Adhesion bond to plywood	dry state	MPa	0.3	0.43
	1-h soak	MPa	0.3	0.70
	24-hs soak	MPa	0.3	0.59

Results of Testing of Joint Disruption Resistance
Property	Unit	Requirement	Result Joint Width 2 mm	Result Joint Width 4 mm
Joint disruption resistance	—	The WRB at joints on two assemblies must show no cracking, delaminating or any other deleterious effects at a transverse bending of L/180.	Pass	Pass
Joint extension @ L/180	mm	Report value	0.11	0.15

Results of Testing of Joint Relaxation Resistance
Property	Unit	Requirement	Result
Joint relaxation resistance	kg/m²·s	Five WRB-coated OSB specimens subject to a 1.3-mm extension following exposure to 15 24-h environmental cycles must have a maximum average Water Transmission Resistance (WTR) rate of 2 × 10⁻⁷ kg/m²·s.	Sample No. 1	1.58 × 10⁻⁷
			Sample No. 2	1.44 × 10⁻⁷
			Sample No. 3	1.28 × 10⁻⁷
			Sample No. 4	1.40 × 10⁻⁷
			Sample No. 5	1.88 × 10⁻⁷

Results of Testing of Water Transmission Resistance (WTR)
Property	Unit	Requirement	Result
WTR	kg/m²·s	Five WRB-coated OSB specimens subjected to a 25-mm head of water must have a maximum average WTR rate of 2 × 10⁻⁷ kg/m²·s measured at 10 days	Sample No. 1	1.58 × 10⁻⁷
			Sample No. 2	1.44 × 10⁻⁷
			Sample No. 3	1.28 × 10⁻⁷
			Sample No. 4	1.40 × 10⁻⁷
			Sample No. 5	1.88 × 10⁻⁷
			Average	1.52 × 10⁻⁷

Results of Testing for Water Vapour Transmission (WVT)
Property	Unit	Requirement	Result
Property	Unit	Requirement	Sample No.	Coated	Uncoated
WVT	ng/(Pa·s·m²)	Report value of the WVT rate of the WRB in combination with the OSB applied at the maximum thickness and the OSB alone	1	8	85
			2	26	111
			3	19	94
			Average	17.7	96.7^{Footnote (1)}

Results of Testing of Accelerated Weathering Resistance of WRB
Property	Requirement	Result
Accelerated weathering resistance	The WRB applied over OSB must show no cracking, delamination, flaking or any deleterious effects following 250 hours of exposure to a Xenon arc.	Pass

Results of Testing of Nail Popping Resistance
Property	Requirement	Sample No.	Result
Nail popping resistance	There must be no cracking or delamination of the WRB following a 1-mm nail protrusion from the nail’s original preset of 1 mm below the surface of the OSB substrate.	1	Pass
		2	Pass
		3	Pass
		4	Pass
		5	Pass
		6	Pass

Results of Testing of Drainage Capacity of the Products
Property	Requirement	Test Specimen	Result
Property	Requirement	Test Specimen	Retained water	After 1 h	After 48 h	Result
Drainage capacity	The unit-retained^{Footnote (1)} water following periods of 1 h and 48 h of drainage must not be greater than 30 g/m² and 15 g/m², respectively, for any single test specimen. The drainage capacity must not be less than 98% of the water mass delivered into the wall specimen.	Panel 1	total (g)	28.8	11.2	Pass
			per unit area (g/m²)	22.1	8.6	Pass
			drainage capacity (%)	99.7	99.7	Pass
		Panel 2	total (g)	21.6	3.4	Pass
			per unit area (g/m²)	16.6	2.6	Pass
			drainage capacity (%)	99.8	99.8	Pass
		Panel 3	total (g)	15.7	0.0	Pass
			per unit area (g/m²)	12.1	0.0	Pass
			drainage capacity (%)	99.8	99.8	Pass

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