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Table 2.6 "Sto Exterior Insulation and Finish Systems"
System	Distinctive System Components
System	Insulation	Intended Substrate	Water-Resistive Barrier	Adhesive	Base Coat	Finish Coat
StoTherm®ci Lotusan	Sto EPS Insulation Board, Sto ProD EPS Insulation Board	Glass mat gypsum, cement board, concrete, masonry	StoGuard®, Sto Flexyl, Sto Watertight Coat	Sto BTS® Plus	Sto BTS® Plus	Stolit® Lotusan
StoTherm®ci Lotusan	Sto EPS Insulation Board, Sto ProD EPS Insulation Board	Plywood/OSB	StoGuard®	Sto BTS® Plus	Sto BTS® Plus	Stolit® Lotusan
StoTherm®ci Classic	Sto EPS Insulation Board, Sto ProD EPS Insulation Board	Glass mat gypsum, cement board, concrete, masonry	StoGuard®, Sto Flexyl, Sto Watertight Coat	Sto BTS® Plus	Sto BTS® Plus	Stolit®, StoSilco® Lit
StoTherm®ci Classic	Sto EPS Insulation Board, Sto ProD EPS Insulation Board	Cement board	StoGuard®	Sto BTS® Plus	Sto BTS® Plus	Stolit®, StoSilco® Lit
StoTherm®ci Essence	Sto EPS Insulation Board, Sto ProD EPS Insulation Board	Concrete	StoGuard®, Sto Flexyl, Sto Watertight Coat	Sto Primer Adhesive B	Sto Primer Adhesive B	Sto Essence Finish
StoTherm®ci Essence	Sto EPS Insulation Board, Sto ProD EPS Insulation Board	Masonry	StoGuard®	Sto Primer Adhesive B	Sto Primer Adhesive B	Sto Essence Finish
StoTherm®ci Essence	Sto EPS Insulation Board, Sto ProD EPS Insulation Board	Glass mat gypsum, cement board, concrete, masonry	StoGuard®, Sto Flexyl, Sto Watertight Coat	Sto Primer Adhesive	Sto Primer Adhesive	Sto Essence Finish
StoTherm®ci Essence	Sto EPS Insulation Board, Sto ProD EPS Insulation Board	Plywood/OSB	StoGuard®	Sto Primer Adhesive	Sto Primer Adhesive	Sto Essence Finish

Table 4.1.1 Results of Testing of Ash Content of the Products
Property		Unit	Requirement	Result
Ash content	WRB (StoGuard®) Sto Gold Fill® Sto Gold Coat®	%	Report value
				75.4
				66.7
	WRB (Sto Flexyl)			97.2
	WRB (Sto Watertight Coat)			52.2
	Adhesive/base coat (Sto BTS® Plus)			95.1
	Adhesive/base coat (Sto Primer/Adhesive-B)			95.6
	Adhesive/base coat (Sto Primer/Adhesive)			86.1
	Finish coat (Stolit® Lotusan)			62.8
	Finish coat (Stolit®)			64.2
	Finish coat (StoSilco® Lit)			64.7
	Finish coat (Sto Essence Finish)			61.8

Infrared Analysis

Table 4.1.2 Results of Infrared Analysis for Documenting Chemical Formulation of the Products
Property		Requirement	Result
Infrared analysis	WRB (StoGuard®) Sto Gold Fill® Sto Gold Coat®	Report value	Report on file
	WRB (Sto Flexyl)
	WRB (Sto Watertight Coat)
	Adhesive/base coat (Sto BTS® Plus)
	Adhesive/base coat (Sto Primer/Adhesive-B)
	Adhesive/base coat (Sto Primer/Adhesive)
	Finish coat (Stolit® Lotusan)
	Finish coat (Stolit®)
	Finish coat (StoSilco® Lit)
	Finish coat (Sto Essence Finishes)

Adhesion Bond of WRB to Plywood/OSB

Table 4.1.3 Results of Testing of Adhesion Bond of WRB to Plywood/OSB
Property			Unit	Requirement: no detachment at bonding plane @	Result^{Footnote (1)}
Adhesion bond	StoGuard® to plywood	dry state	MPa	0.25	0.730
		2-h drying		0.08	0.447
		7-d drying		0.25	0.697
	StoGuard® to OSB	dry state		0.25	0.509
		2-h drying		0.08	0.111
		7-d drying		0.25	0.289

Adhesion/Cohesion Bond of WRB to Substrates other than Plywood/OSB

Table 4.1.4(a) Results of Testing of Adhesion of WRB to Substrates other than Plywood/OSB
Property			Unit	Requirement: no detachment at bonding plane @	Result
Adhesion bond	StoGuard® to cement board	dry state	MPa	0.25	0.635
		2-h drying		0.08	0.440
		7-d drying		0.25	0.197
	StoGuard® to glass mat gypsum	dry state		0.25	0.227
		2-h drying		0.08	0.097
		7-d drying		0.25	0.118
	Sto Flexyl to cement board	dry state		0.25	0.613
		2-h drying		0.08	0.419
		7-d drying		0.25	0.708
	Sto Flexyl to glass mat gypsum	dry state		0.25	0.397
		2-h drying		0.08	0.125
		7-d drying		0.25	0.215
	Sto Watertight coat to cement board	dry state		0.25	0.613
		2-h drying		0.08	0.419
		7-d drying		0.25	0.708
	Sto Watertight coat to glass mat gypsum	dry state		0.25	0.397
		2-h drying		0.08	0.125
		7-d drying		0.28	0.215

Table 4.1.4(b) Results of Testing of Adhesion/Cohesion Bond of WRB to Substrates other than Plywood/OSB
Property			Unit	Requirement: no detachment at bonding plane @	Result
Adhesion/cohesion bond	StoGuard® to concrete	dry state	MPa	0.25	0.455
		2-h drying		0.08	0.551
		7-d drying		0.25	0.475

Adhesion Bond of Adhesive to WRB

Table 4.1.5 Results of Testing of Adhesion Bond of Adhesive to WRB
Property			Unit	Requirement: no detachment at bonding plane @	Result
Adhesion bond	Sto BTS® Plus to StoGuard®	dry state	MPa	0.25	0.251
		2-h drying		0.08	0.225
		7-d drying		0.25	0.428
	Sto Primer/Adhesive B to StoGuard®	dry state		0.25	0.401
		2-h drying		0.08	0.370
		7-d drying		0.25	0.447
	Sto BTS® Plus to Sto Flexyl	dry state		0.25	0.3
		2-h drying		0.08	0.1
		7-d drying		0.25	0.3
	Sto Primer/Adhesive B to Sto Flexyl	dry state		0.25	0.3
		2-h drying		0.08	0.1
		7-d drying		0.25	0.3
	Sto BTS® Plus to Sto Watertight Coat	dry state		0.25	0.3
		2-h drying		0.08	0.1
		7-d drying		0.25	0.3
	Sto Primer/Adhesive B to Sto Watertight Coat	dry state		0.25	0.3
		2-h drying		0.08	0.1
		7-d drying		0.25	0.3

Adhesion Bond of Adhesive to Insulation

Table 4.1.6 Results of Testing of Adhesion Bond of Adhesive to Insulation
Property			Unit	Requirement	Result
Adhesion bond	Sto BTS® Plus to EPS	dry state	MPa	0.08	0.1
		2-h drying		0.08	0.1
		7-d drying		0.08	0.1
	Sto Primer/Adhesive B to EPS	dry state		0.08	0.1
		2-h drying		0.08	0.1
		7-d drying		0.08	0.1
	Sto Primer/Adhesive to EPS	dry state		0.08	0.1
		2-h drying		0.08	0.1
		7-d drying		0.08	0.1

Lamina Bond Strength

Table 4.1.7 Results of Testing of Lamina Bond Strength (Base Coat/Finish Coat/Insulation)
Property			Unit	Requirement	Result
Adhesion bond	Sto BTS® Plus/Stolit® to EPS	dry state	MPa	0.1	0.221
		2-h drying		0.1	0.143
		7-d drying		0.1	0.214
	Sto Primer Adhesive/Stolit® to EPS	dry state		0.1	0.194
		2-h drying		0.1	0.103
		7-d drying		0.1	0.193

Water Vapour Transmission (WVT) of WRB

Table 4.1.8 Results of Testing of Water Vapour Transmission (WVT) of WRB
Property		Unit	Requirement	Result
WVT	StoGuard® over OSB	ng/Pa·s·m²	Report value	156^{Footnote (1)} 78^{Footnote (2)}
	StoGuard® over glass-mat gypsum			321^{Footnote (1)} 232^{Footnote (2)}
	Sto Flexyl over OSB			56^{Footnote (1)} 56^{Footnote (2)}
	Sto Flexyl over glass-mat gypsum			187^{Footnote (1)} 94^{Footnote (2)}
	Sto Watertight over OSB			56^{Footnote (1)} 56^{Footnote (2)}
	Sto Watertight over glass-mat gypsum			187^{Footnote (1)} 94^{Footnote (2)}

Water Vapour Transmission (WVT) of Lamina

Table 4.1.9 Results of Testing of Water Vapour Transmission (WVT) of Lamina
Property		Unit	Requirement	Result
WVT	Sto BTS® Plus	ng/Pa·s·m²	Report value	524
	Sto Primer/Adhesive B			211.8
	Sto Primer/Adhesive			429

Water Absorption of Base Coat

Table 4.1.10 Results of Testing of Water Absorption of Base Coat
Property		Unit	Requirement	Result
Water absorption of base coat	Sto BTS® Plus	%	≤ 20% of the dry weight	12.28
	Sto Primer/Adhesive			19.37
	Sto Primer/Adhesive B			17.05

Water-Absorption Coefficient of WRB

Table 4.1.11 Results of Testing of Water Absorption Coefficient of WRB at 72 Hours
Property		Unit	Requirement	Result
Water-absorption coefficient of WRB @ 72 hours	StoGuard	kg/(m²·s^1/2)	≤ 0.004	0.0003
	Sto Watertight Coat			0.0013
	Sto Flexyl			0.0013

Base Coat Impermeability to Water

Table 4.1.12 Results of Testing of Impermeability to Water of the Base Coat
Property		Unit	Requirement	Result
Base coat impermeability to water	Sto BTS® Plus	h	No water penetration in less than 2 h	Pass
	Sto Primer/Adhesive B			Pass
	Sto Primer/Adhesive			Pass

Mildew and Fungus Resistance

Table 4.1.13 Results of Testing of Mildew and Fungus Resistance
Property	Requirement	Result
Mildew and fungus resistance of finish coat (Stolit® & StoSilco® Lit)	No growth	Pass

Accelerated Weathering Resistance

Table 4.1.14 Results of Testing of Accelerated Weathering Resistance
Property	Adhesive Material	Applied Finish	Requirement	Result
Accelerated weathering resistance of lamina @ 2000 hrs	Sto BTS® Plus	Stolit® Finish	No cracking, flaking or deleterious effects	Pass

Salt Spray Resistance

Table 4.1.15 Results of Testing of Salt Spray Resistance
Property		Requirement	Result
Salt spray resistance @ 300 hours	Sto BTS® Plus/Stolit	No cracking, flaking or deleterious effects	Pass
Salt spray resistance @ 300 hours	Sto Primer/Adhesive/Stolit®	No cracking, flaking or deleterious effects	Pass

Durability under Environmental Cycling Conditions

Table 4.1.16 Results of Testing of Durability under Environmental Cycling Conditions
Property	Unit	Requirement		Result
Pre-conditioning (drainage evaluation)	L	Report water quantity	introduced	13.5
			drained	12.59
			retained	0.91
Environmental cycling (60 cycles)	–	No cracking, blistering or sagging of base coat and no detachment or crazing of finish coat		pass
Adhesion bond strength after environmental cycling	MPa	0.1		0.31

Table 4.1.17 Results of Testing of Breaking Strength Resistance of Reinforcing Mesh (142.0 g/m² (4.3 oz) – (St. Gobain)
Property		Unit	Requirement	Result
Ash content		%	Report value	14.7
Mass per unit area		g/m²	Report value	14
Breaking strength resistance				Weft	Warp
Initial tensile strength		N/mm	≥ 35	37.2	40.3
Loss of tensile strength after	28-day, 3-ion soak	%	≤ 60% for adhered EIFS ≤ 50% for mechanically fastened EIFS	17.7	7.3
Residual tensile strength after	28-day, 3-ion soak	N/mm	≥ 15 N/mm for adhered EIFS ≥ 25 N/mm for mechanically fastened EIFS	30.6	37.3
Elongation at break	Initial	%	Report value	3.3	4.1
Elongation at break	after 28-day, 3-ion soak	%	Report value	2.8	3.8

Table 4.1.18 Results of Impact Resistance Testing
Property			Requirement	Result
Impact resistance	10 joules	Sto BTS® Plus	6/10 free-fall drops must show no perforation (broken mesh)	Pass
	3 joules	Sto BTS® Plus	6/10 free-fall drops must show no cracks	Pass
	10 joules	Sto Primer/Adhesive	6/10 free-fall drops must show no perforation (broken mesh)	Pass
	3 joules	Sto Primer/Adhesive	6/10 free-fall drops must show no cracks	Pass
	10 joules	Sto Primer/Adhesive B	6/10 free-fall drops must show no perforation (broken mesh)	Pass
	3 joules	Sto Primer/Adhesive B	6/10 free-fall drops must show no cracks	Pass

Table 4.1.19 Results of Testing of Wind Load Resistance
Reference Wind Pressure (kPa)	Sustained		Cycling		Gust		Deflection Test
	P₁, P₁'(Pa)		P₂, P₂' (Pa)		P₃, P₃' (Pa)		Test Pressure (Pa) 3.3 P₁, P₁'	Measured Maximum Net Mid-span Deflections (mm)
	P₁, P₁'(Pa)		P₂, P₂' (Pa)		P₃, P₃' (Pa)		Test Pressure (Pa) 3.3 P₁, P₁'	Stud Span 3 050 mm	Sheathing Span 406 mm
Q₅₀ ≤ 0.45	±450	Pass	±660	Pass	±980	Pass	+980	5.49	1.76
Q₅₀ ≤ 0.45	±450	Pass	±660	Pass	±980	Pass	−980	-5.59	-2.35
Q₅₀ ≤ 0.55	±550	Pass	±800	Pass	±1 200	Pass	+1 200	6.72	2.16
Q₅₀ ≤ 0.55	±550	Pass	±800	Pass	±1 200	Pass	−1 200	-6.84	-2.88
Q₅₀ ≤ 0.60	±650	Pass	±950	Pass	±1 410	Pass	+1 410	7.90	2.54
Q₅₀ ≤ 0.60	±650	Pass	±950	Pass	±1 410	Pass	−1 410	-8.04	-3.38
Q₅₀ ≤ 0.75	±750	Pass	±1 090	Pass	±1 630	Pass	+1 630	9.13	2.93
Q₅₀ ≤ 0.75	±750	Pass	±1 090	Pass	±1 630	Pass	−1 630	-9.29	-3.91
Q₅₀ ≤ 0.85	±850	Pass	±1240	Pass	±1850	Pass	+1 850	10.36	3.33
Q₅₀ ≤ 0.85	±850	Pass	±1240	Pass	±1850	Pass	−1 850	-10.55	-4.44
Q₅₀ ≤ 1.00	±1000	Pass	±1460	Pass	±2180	Pass	+2 180	12.21	3.92
Q₅₀ ≤ 1.00	±1000	Pass	±1460	Pass	±2180	Pass	−2 180	-12.43	-5.23
Maximum test pressure @ L/180 deflection							+3 073	16.90	-
Maximum test pressure @ L/180 deflection							−2 990	-16.90	-
Ultimate structural test pressure							+3 640	Passed
Ultimate structural test pressure							-3 390	Sheathing separation from steel studs occurred

Table 4.1.20 Results of Testing of Joint Disruption Resistance
Property	Unit	Requirement	Result
			Joint Width
			2 mm	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^{Footnote (1)}	Pass
Joint extension @ L/170^{Footnote (1)}	mm	Report value	0.51	0.73

Table 4.1.21 Results of Testing of Joint Relaxation Resistance
Property	Unit	Requirement	Sample No.	Result
Joint relaxation resistance	kg/m²·s	Five WRB-coated OSB specimens subjected to 1.3-mm extension following exposure to 15 24-h environmental cycles must have a maximum average water transmission rate of 2 × 10⁻⁷ kg/m²·s	1	1.14 × 10⁻⁷
			2	8.55 × 10⁻⁸
			3	9.29 × 10⁻⁸
			Average	9.74 × 10⁻⁸

Table 4.1.22 Results of Testing of Water Transmission Resistance (WTR) Over OSB
Property	Unit	Requirement	Sample No.	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	1	^{Footnote (1)}
			2	1.87 × 10⁻⁷
			3	9.97 × 10⁻⁸
			4	3.25 × 10⁻⁸
			5	1.64 × 10⁻⁷
			Average	1.21 × 10⁻⁷

Table 4.1.23 Results of Testing of Water Transmission Resistance (WTR) Over Plywood
Property	Unit	Requirement	Sample No.	Result
WTR	kg/m²·s	Five WRB-coated plywood 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	1	^{Footnote (1)}
			2	5.64 × 10⁻⁷
			3	2.27 × 10⁻⁸
			4	1.80 × 10⁻⁸
			5	1.11 × 10⁻⁷
			Average	1.79 × 10⁻⁷

Table 4.1.24 Results of Testing of Water Vapour Transmission (WVT)
Property		Unit	Requirement	Sample No.	Result^{Footnote (1)}
Property		Unit	Requirement	Sample No.	Uncoated	Coated with StoGuard®
WVT	OSB	ng/Pa·s·m²	Report WVT rate of plywood and OSB coated with a WRB and of uncoated plywood and OSB	1	84.44	49.44
				2	111.25	44.84
				3	86.74	44.30
				Average	94.14	47.86
	Plywood			1	235.21	137.73
				2	214.22	128.73
				3	226.96	122.48
				Average	225.47	129.65

Table 4.1.25 Results of Testing of Accelerated Weathering of WRB
Property		Requirement	Sample No.	Result
Accelerated weathering resistance	"Sto Gold Coat®"	The WRB applied over OSB must show no cracking, delamination or flaking, or any deleterious effects following 250 hours exposure to Xenon arc	1	Pass
			2	Pass
			3	Pass
			4	Pass
			5	Pass
			6	Pass

Table 4.1.26 Results of Testing of Drainage Capacity of the Products
Property		Requirement	Result
			Retained Water Per Unit Area (g/m²)		Drainage Capacity (%) After 1 h
			After 1 h	After 48 h	Drainage Capacity (%) After 1 h
Drainage capacity	Panel 1^{Footnote (1)}	The water retained in the unit following 48 hours of drying must not be greater than 15 g/m² for any single test specimen.	38.2 29.4	0.00 0.00	99.5
	Panel 2^{Footnote (1)}	The water retained in the unit following 48 hours of drying must not be greater than 15 g/m² for any single test specimen.	35.4 27.2	0.00 0.00	99.6
	Panel 3^{Footnote (1)}	The drainage capacity must not be less than 98% of the water mass delivered into the EIFS wall specimen.	31.8 24.5	0.00 0.00	99.6

Table 4.1.27 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 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