Sikasil® WS-290 FPS
Ultra low modulus, neutral cure, field pigmentable silicone sealant
Sikasil® WS-290 FPS is a field pigmentable, low to no bleed, low modulus, one–component plus color pack, non-sag, elastomeric, neutral cure silicone sealant. Sikasil® WS-290 FPS performs exceptionally well under dynamic conditions due to its ultra-low modulus, high extension/compression, recovery properties and strong adhesion to most building materials. Sikasil® WS-290 FPS accommodates long-term movement of +100/-50 % in properly designed joints and is particularly well suited for use in Exterior Insulation Finish Systems (EIFS). Meets the requirements of ASTM C-920, Type S, Grade NS, Class 100/50, Use NT, M, G, A, O; TT-S-00230C, Type II, Class A; TT-S-001543A, Class A; CAN/CGSB-19.13-M87.
- Field pigmentable sealant
- Ultra low modulus
- Unaffected by most atmospheric conditions
- Non-staining to most porous substrates
- Joint movement +100/-50 %
- Excellent adhesion to most substrates and surfaces
- One-component, moisture-curing, plus color pack
- Excellent gunnability in all temperatures
Usage
Sikasil® WS-290 FPS silicone sealant has been specifically designed:- For sealing expansion and control joints in precast concrete panels and metal curtain walls
- As a weatherseal in glass to glass butt joint glazing
- As a weatherseal in nonstructural glazing applications, including cap, toe and heel beads
- Exterior Insulation Finish Systems (EIFS) and numerous other areas requiring a high-performance sealant
Advantages
- Field pigmentable sealant
- Ultra low modulus
- Unaffected by most atmospheric conditions
- Non-staining to most porous substrates
- Joint movement +100/-50 %
- Excellent adhesion to most substrates and surfaces
- One-component, moisture-curing, plus color pack
- Excellent gunnability in all temperatures
Packaging
1.5 gal pails (5.7 L), Silicone color packs sold separately
Color
White, Colonial White, Aluminum, Limestone, Black, Bronze, Medium Bronze. Custom colors available on request.
Product Details
APPROVALS / STANDARDS
- Meets the requirements of ASTM C920, Type S, Grade NS, Class 50, Use NT, M, G, A, O
- SWRI validated acc. to ASTM C719 (No. 623-SIK290)
- Federal specification TT-S-00230C, Type II, Class A
- Canadian Standard CAN/CGSB 19.13-M87
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Shelf Life
12 months in original unopened pails.
Storage Conditions
Store in unopened containers at temperatures lower than 80 °F (27 °C)
Volatile organic compound (VOC) content
29 g/L
Shore A Hardness
| 12 | (7 days at 77 °F (25 °C) and 50 % R.H.) (ASTM C-661) |
Tensile Strength
| 165 psi (1.14 MPa) | (7 days at 77 °F (25 °C) and 50 % R.H.) (ASTM D-412) |
Tensile stress at specified elongation
| 42 psi (0.29 MPa) at 100 % | (7 days at 73 °F (23 °C) and 50 % R.H.) (ASTM D-412) |
Movement Capability
| +100 % / -50 % | (7 days at 73 °F (23 °C) and 50 % R.H.) (ASTM C-719) |
Adhesion in peel
| 20-40 pli | (7 days at 73 °F (23 °C) and 50 % R.H.) (ASTM C-794) |
Service Temperature
-80 °F to +350 °F (-62 °C to 177 °C)
UV Exposure
| Excellent | (Weatherometer) |
Resistance to Weathering
| Excellent | (Weatherometer) |
Color
| Staining, Color Change | None |
| Staining on Porous Substrates | No staining |
Application
Sag Flow
| no sag | (at 77 °F (25 °C) and 50 % R.H.) |
Cure Time
| Tack Free Time | 50 min. |
| Cure Time | 7-14 days |
| Full Adhesion | 7-14 days |
Tooling Time
| 30 minutes | (at 77 °F (25 °C) and 50 % R.H.) |
(higher temperatures and/or humidity will shorten this time)
Coverage
20 oz (600 ml) Bulk Gun: Yield in Linear feet
| Width/Depth | 1/4'' | 3/8'' | 1/2'' |
| 1/4'' | 48.1 | ||
| 3/8'' | 32.1 | 21.4 | |
| 1/2'' | 24.1 | 16.0 | 12.0 |
| 3/4'' | 16.0 | 10.7 | 8.0 |
| 1'' | 6.0 | ||
| 1.25'' | 4.8 | ||
| 1.5'' | 4.0 |
1 gallon: Yield in Linear feet
| Width/Depth | 1/4'' | 3/8'' | 1/2'' |
| 1/4'' | 307.9 | ||
| 3/8'' | 205.3 | 136.8 | |
| 1/2'' | 153.9 | 102.6 | 77.0 |
| 3/4'' | 102.6 | 68.4 | 51.3 |
| 1'' | 38.5 | ||
| 1.25'' | 30.8 | ||
| 1.5'' | 25.7 |
SUBSTRATE PREPARATION
The substrate must be clean, dry, frost free, sound and free of any oils, greases or incompatible sealers, paints or coatings that may interfere with adhesion.
POROUS SUBSTRATES – clean by mechanical methods to expose a sound surface free of contamination and laitance.
NON-POROUS SUBSTRATES – for cleaning non-porous substrates, use two rag wipe method using xylene or an approved commercial solvent. Allow solvent to evaporate prior to sealant application.
Priming
Sikasil® WS-290 FPS is designed to obtain adhesion without the use of a primer; however, certain substrates may require a primer. Test by applying the sealant and/or primer sealant combination to confirm results and proposed application methods. Refer to Technical Data Sheet for Sikasil Primer-2100 and/or contact Technical Service for additional information.