Language selection

Search

Content page

From [Institution name]

Table 2.6 "Sto Exterior Insulation and Finish Systems"

System

Distinctive System Components

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

Plywood/OSB

StoGuard®

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

Cement board

StoGuard®

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

Masonry

StoGuard®

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

Plywood/OSB

StoGuard®

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 @

ResultFootnote (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

156Footnote (1)

78Footnote (2)

StoGuard® over glass-mat gypsum

321Footnote (1)

232Footnote (2)

Sto Flexyl over OSB

56Footnote (1)

56Footnote (2)

Sto Flexyl over glass-mat gypsum

187Footnote (1)

94Footnote (2)

Sto Watertight over OSB

56Footnote (1)

56Footnote (2)

Sto Watertight over glass-mat gypsum

 

 

187Footnote (1)

94Footnote (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·s1/2)

≤ 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

Sto Primer/Adhesive/Stolit®

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

after 28-day, 3-ion soak

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

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

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

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)

Stud Span 3 050 mm

Sheathing Span 406 mm

Q50 ≤ 0.45

±450

Pass

±660

Pass

±980

Pass

+980

5.49

1.76

−980

-5.59

-2.35

Q50 ≤ 0.55

±550

Pass

±800

Pass

±1 200

Pass

+1 200

6.72

2.16

−1 200

-6.84

-2.88

Q50 ≤ 0.60

±650

Pass

±950

Pass

±1 410

Pass

+1 410

7.90

2.54

−1 410

-8.04

-3.38

Q50 ≤ 0.75

±750

Pass

±1 090

Pass

±1 630

Pass

+1 630

9.13

2.93

−1 630

-9.29

-3.91

Q50 ≤ 0.85

±850

Pass

±1240

Pass

±1850

Pass

+1 850

10.36

3.33

−1 850

-10.55

-4.44

Q50 ≤ 1.00

±1000

Pass

±1460

Pass

±2180

Pass

+2 180

12.21

3.92

−2 180

-12.43

-5.23

Maximum test pressure @ L/180 deflection

+3 073

16.90

-

−2 990

-16.90

-

Ultimate structural test pressure

+3 640

Passed

-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/180Footnote (1)

Pass

Joint extension @ L/170Footnote (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.

ResultFootnote (1)

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

Panel 1Footnote (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 2Footnote (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 3Footnote (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