What is ALEXSEAL Fairing Compound 202 Base and why choose it?
ALEXSEAL Fairing Compound 202 Base is a solvent-free, epoxy-based, lightweight filler specifically developed for professional yacht fairing and filling. It offers excellent application, sanding and anti-sagging properties, cures without shrinking and creates a smooth, stable surface for subsequent ALEXSEAL Yacht Coating primers and topcoats. It can be used both above and below the waterline when correctly sealed.
Main features
- Epoxy, solvent-free formulation for minimal shrinkage and high dimensional stability.
- Lightweight fairing compound ideal for full fairing or spot repairs on yachts and other correctly prepared substrates.
- Excellent anti-sagging behavior, allowing application at higher film builds without running.
- Easy to mix and apply with trowel or spatula; contrasting component colors help control mixing quality.
- Outstanding sanding properties with recommended block sanding from P36 to P120 grit.
- 100% volume solids (catalyzed, without reduction) for predictable, high-build fairing.
- Suitable above and below the waterline when overcoated correctly (below waterline must be sealed with ALEXSEAL Finish Primer 442).
- Professional system integration with ALEXSEAL primers such as Protective Primer 161, Super Build 302, Finish Primer 442 and others.
Technical characteristics
Color and components
- Mixture color: Gray
- Standard Base: White
- Thick Base: White
- Standard / LV Converter: Gray
- Fast Converter: Red
Chemical nature
- Type: Mixture of synthetic resins and pigments
- System: Epoxy-based, solvent-free fairing compound
Curing and pot life (mixed product)
Optimal application environment: from 15°C (60°F) / 40% RH up to 30°C (85°F) / 80% RH.
- Pot life with C2075 or C2028 Standard / LV Converter:
- 15°C: 1 hour
- 20°C: 50 min
- 25°C: 40 min
- 30°C: 30 min
- Pot life with C2017 Fast Converter:
- 15°C: 45 min
- 20°C: 35 min
- 25°C: 25 min
- 30°C: 15 min
- Dry to sand with C2075 or C2028 Standard / LV Converter:
- 15°C: 36 h
- 20°C: 24 h
- 25°C: 18 h
- 30°C: 12 h
- Dry to sand with C2017 Fast Converter:
- 15°C: 12 h
- 20°C: 8 h
- 25°C: 6 h
- 30°C: 4 h
- Fully cured with C2075 or C2028 Standard / LV Converter:
- 15°C: 8 days
- 20°C: 7 days
- 25°C: 6 days
- 30°C: 5 days
- Fully cured with C2017 Fast Converter:
- 15°C: 6 days
- 20°C: 5 days
- 25°C: 4 days
- 30°C: 3 days
Use Fast Converter below 15°C/60°F. Do not use the product below 10°C/50°F or above 40°C/104°F.
Coverage
- Volume solids (catalyzed, no reduction): 100%
- Theoretical coverage: 1 m²/l (3.8 m²/gal, 41 sq. ft./gal) at approx. 1 mm dry film thickness.
- Typical practical coverage at average thickness:
- 6 mm (1/4"): 0.15 m²/l (0.6 m²/gal; 6.4 sq. ft./gal)
- 8 mm (3/8"): 0.11 m²/l (0.44 m²/gal; 4.8 sq. ft./gal)
- 10 mm (1/2"): 0.07 m²/l (0.29 m²/gal; 3.2 sq. ft./gal)
Substrate preparation
- Substrate must be clean, dry and free of dust, grease, oil and other contamination.
- For optimum adhesion, grind and/or blast with P36–P60 grit before priming.
- Full fairing systems require a heavily abraded substrate; thin systems (< 3 mm) require a less aggressive profile.
- Metal substrates: prime with ALEXSEAL Protective Primer 161. Fairing Compound 202 can be applied directly over 161 without sanding for up to 6 months.
- GRP substrates: use ALEXSEAL Super Build 302, Finish Primer 442 or Protective Primer 161 over the prepared surface. All ALEXSEAL primers (except 161) should dry overnight, then be sanded with P60–P80 grit before application.
Mixing ratio and packaging
- Mixing ratio by volume: 1 : 1 (Standard Base / Thick Base : Standard Converter / Fast Converter / LV Converter).
- Mixing ratio by weight: 10 : 6 (Standard Base / Thick Base : Standard Converter / Fast Converter / LV Converter).
- Reduction: Must not be reduced (solvent-free).
- Trade names and packaging:
- P2094 ALEXSEAL Fairing Compound 202 Standard Base – 1/2 gal & 2 gal
- P2083 ALEXSEAL Fairing Compound 202 Thick Base – 1/2 gal & 2 gal
- C2075 ALEXSEAL Fairing Compound 202 Standard Converter – 1/2 gal & 2 gal
- C2017 ALEXSEAL Fairing Compound 202 Fast Converter – 1/2 gal & 2 gal
- C2028 ALEXSEAL Fairing Compound 202 LV Converter – 1/2 gal & 2 gal
Physical and chemical data (Base)
- Physical state: Solid (20–25°C, 1,013 hPa)
- Odour: Characteristic
- Boiling point: approx. 100°C
- Flash point: 101°C (ISO 13736)
- pH: 6–8 (20°C, 10% concentration)
- Kinematic viscosity: > 21 mm²/s
- Flow time: > 150 s (4 mm DIN 53211); > 100 s (6 mm ISO 2431)
- Water solubility: Insoluble; immiscible with water
- Vapour pressure: approx. 100 hPa (50°C)
- Density: approx. 1.12 g/cm³ (20°C)
- Solvent separation: < 3.00% (V)
Applications and use cases
- Yacht hull fairing above the waterline: Create smooth, fair surfaces before high-build or finish primers.
- Below-waterline fairing: Fair and fill underwater areas, then seal with ALEXSEAL Finish Primer 442.
- Spot repairs and re-fairing: Correct local defects on metal or GRP substrates already primed with compatible ALEXSEAL primers.
- High-build profiling: Build up thickness (up to approx. 10 mm practical layers) while maintaining anti-sagging performance.
- Multi-layer fairing systems: Recoat over itself after minimum dry-to-sand times, scratch sanding with P36–P60 grit for intercoat adhesion.
Application guidelines
Mixing and application
- Use trowels, spatulas and straight-edge tools.
- Components have different colors for visual control; after mixing the color must be homogeneous.
- Mix mechanically with slow-turning dough mixers or manually. Do not use drill mixers.
- Avoid entrapping air; do not introduce air bubbles into the mixture.
- Apply in thin layers and work up to the desired thickness, then pull off excess material with a straight edge to minimize air pockets.
- Clean application equipment with R4042 ALEXSEAL Epoxy Primer Reducer.
- Block sand with P36–P120 grit; finishing with P80 or finer helps prevent sand-scratch print-through in subsequent coats.
- Overcoat with compatible ALEXSEAL products such as 302, 303, 328, 357 or 442 after minimum dry-to-sand time and block sanding with P36–P120 grit.
Section 8 – Individual protection measures
Exposure controls and personal protective equipment
- Ventilation: Provide good ventilation using local exhaust and general extraction.
- Eye/face protection: Wear safety goggles to protect against liquid splashes.
- Hand protection:
- Use chemical-resistant protective gloves compliant with EN 374.
- Recommended materials for short-term contact (splash protection): nitrile rubber or neoprene.
- Minimum material thickness: > 0.4 mm.
- Breakthrough time: > 480 min.
- Replace gloves immediately if damaged or worn.
- Skin and body protection: Wear work clothing as usual in the chemical industry; wash skin after contact and promptly clean contaminated areas.
- Respiratory protection: Normally not required, but avoid breathing vapours, dust from sanding, particulates and spray mist.
- Hygiene measures: Do not eat, drink or smoke while working. Avoid contact with skin, eyes and clothing.
Section 14 – Transport information
- UN number: UN 3077
- UN proper shipping name (ADR / IMDG / IATA): ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S. (contains 4,4'-Isopropylidenediphenol, oligomeric reaction products with 1-chloro-2,3-epoxypropane; formaldehyde, oligomeric reaction products with 1-chloro-2,3-epoxypropane and phenol)
- Transport hazard class: 9 (miscellaneous dangerous goods)
- Packing group: III
- ADR:
- Classification code: M7
- Hazard identification number: 90
- Labels: 9
- Tunnel restriction code: (-)
- Environmentally hazardous: yes
- IMDG:
- Packing group: III
- Labels: 9
- EmS code: F-A, S-F
- Marine pollutant: yes
- IATA (passenger and cargo):
- Packing instruction: 956 (Y956 for limited quantities)
- Packing group: III
- Labels: Miscellaneous Dangerous Goods
- Environmentally hazardous: yes
- Additional note: Transport classifications are based on the unpackaged material and may vary with mode of transport, packaging size and regional regulations.
FAQ
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Can ALEXSEAL Fairing Compound 202 Base be used below the waterline?
Yes. It can be used below the waterline, but it must be sealed with ALEXSEAL Finish Primer 442 before further coating.
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What is the recommended mixing ratio?
The mixing ratio is 1:1 by volume (Standard or Thick Base : Standard, Fast or LV Converter) and 10:6 by weight.
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Do I need to sand ALEXSEAL Protective Primer 161 before applying Fairing Compound 202?
No. ALEXSEAL Fairing Compound 202 can be applied directly over ALEXSEAL Protective Primer 161 without sanding for up to 6 months after priming.
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How should I sand the cured fairing compound?
Block sand with P36–P120 grit. Finishing with P80 grit or finer helps prevent sand-scratch print-through in the final coating system.
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Which tools are suitable for application?
Use trowels, spatulas and straight-edge tools. Drill mixers must not be used for mixing.
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What is the pot life of the mixed product?
Depending on temperature and converter, pot life ranges from about 1 hour at 15°C with Standard/LV Converter down to 15 minutes at 30°C with Fast Converter.
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How should equipment be cleaned after application?
Clean tools and equipment with R4042 ALEXSEAL Epoxy Primer Reducer.
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Is the product classified as dangerous for transport?
Yes. It is classified as UN 3077, environmentally hazardous substance, solid, N.O.S., class 9, packing group III.
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What personal protective equipment is recommended?
Use chemical-resistant gloves (e.g. nitrile or neoprene), safety goggles, suitable work clothing and provide adequate ventilation. Avoid inhalation of vapours and sanding dust.
*Contenido generado por IA
