What is FAIRING COMPOUND 202 THICK BASE and why choose it
FAIRING COMPOUND 202 THICK BASE (ALEXSEAL P2083) is a solvent-free, epoxy-based, light-weight filler designed for professional yacht fairing and filling work. It offers excellent application, sanding and anti-sagging properties, curing without shrinking and creating a smooth, stable surface ready for overcoating with ALEXSEAL Yacht Coating primers and topcoats. Its thick base formulation is ideal where higher film builds or deeper filling are required on properly prepared substrates above or below the waterline.
Main features
- Solvent-free, epoxy-based fairing compound.
- Light-weight formulation for easier handling and reduced structural weight.
- Excellent application characteristics with trowel, spatula or straight-edge tools.
- Outstanding sanding properties; block sandable from P36 to P120 grit.
- Anti-sagging behavior for fairing vertical and overhead areas.
- Cures without shrinkage, providing long-term dimensional stability.
- Designed for use both above and below the waterline (below waterline must be sealed with ALEXSEAL Finish Primer 442).
- Color-contrasted components (white thick base and colored converters) to visually control mixing quality.
Technical specifications
Product identification
- Brand: ALEXSEAL
- Commercial name: FAIRING COMPOUND 202 THICK BASE
- Trade code (thick base): P2083
- System: ALEXSEAL Fairing Compound 202
- Chemistry: Epoxy-based, solvent-free filler
Colors
- Color of mixed filler: Gray
- Thick Base: White
- Standard and LV Converter: Gray
- Fast Converter: Red
Mixing ratios
- By volume: 1 : 1 (Standard Base/Thick Base : Standard Converter/Fast Converter/LV Converter)
- By weight: 10 : 6 (Standard Base/Thick Base : Standard Converter/Fast Converter/LV Converter)
- Reduction: must not be reduced; the product is solvent-free.
Trade names and packaging within the system
- 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
Coverage
Volume solids (catalyzed, without reduction): 100 %
Coverage depends on the required filling depth and the area to be faired. The following values are based on the combined base and converter:
- Theoretical coverage: 1 m²/l (3.8 m²/gal, 41 sq. ft./gal) at 1 mm dry film thickness.
- Practical coverage at average thickness:
- Approximately 0.15 m²/l (0.6 m²/gal; 6.4 sq. ft./gal) at 6 mm (1/4 inch).
- Approximately 0.11 m²/l (0.44 m²/gal; 4.8 sq. ft./gal) at 8 mm (3/8 inch).
- Approximately 0.07 m²/l (0.29 m²/gal; 3.2 sq. ft./gal) at 10 mm (1/2 inch).
Substrate pre-treatment
- Substrate must be clean, dry and free from 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 fairing systems (< 3 mm / approx. 1/8 inch) require a less aggressive profile.
Recommended primer systems
- Metal substrates: Prime with ALEXSEAL Protective Primer 161. ALEXSEAL Fairing Compound 202 may be applied directly to Protective Primer 161 without sanding for up to 6 months after application.
- GRP substrates: Use ALEXSEAL Super Build 302, Finish Primer 442, or Protective Primer 161 over a properly prepared surface. All ALEXSEAL primers (except 161) should be sanded with P60–P80 grit after overnight dry before applying Fairing Compound 202.
Application
- Recommended tools: trowels, spatulas, straight-edge materials.
- Components have different colors to visually control mixing. After mixing, the color must be homogeneous.
- Insufficient mixing of base and converter can lead to improper curing.
- Mix mechanically with slow-turning dough mixers or manually; do not use drill mixers.
- Avoid incorporation of air bubbles during mixing and application.
- Apply in thin layers, working up to the desired thickness before pulling out with a straight edge; this helps avoid air pockets.
- Cleaning of equipment: use R4042 ALEXSEAL Epoxy Primer Reducer.
- Sanding: block sand with P36–P120 grit. Finishing with P80 grit or finer helps prevent sand-scratch print-through in the final coating system.
Pot life and drying times
Optimal application environment: minimum 15°C (60°F) and 40% RH, up to maximum 30°C (85°F) and 80% RH.
Pot life
- With C2075 or C2028 Standard or LV Converter:
- 15°C (60°F): 1 hour
- 20°C (68°F): 50 minutes
- 25°C (77°F): 40 minutes
- 30°C (85°F): 30 minutes
- With C2017 Fast Converter:
- 15°C (60°F): 45 minutes
- 20°C (68°F): 35 minutes
- 25°C (77°F): 25 minutes
- 30°C (85°F): 15 minutes
Dry to sand
- With C2075 or C2028 Standard or LV Converter:
- 15°C (60°F): 36 hours
- 20°C (68°F): 24 hours
- 25°C (77°F): 18 hours
- 30°C (85°F): 12 hours
- With C2017 Fast Converter:
- 15°C (60°F): 12 hours
- 20°C (68°F): 8 hours
- 25°C (77°F): 6 hours
- 30°C (85°F): 4 hours
Full cure
- With C2075 or C2028 Standard or LV Converter:
- 15°C (60°F): 8 days
- 20°C (68°F): 7 days
- 25°C (77°F): 6 days
- 30°C (85°F): 5 days
- With C2017 Fast Converter:
- 15°C (60°F): 6 days
- 20°C (68°F): 5 days
- 25°C (77°F): 4 days
- 30°C (85°F): 3 days
Use Fast Converter below 15°C/60°F. Do not use Fairing Compound 202 below 10°C/50°F or above 40°C/104°F.
Overcoating and re-fairing
- Recoating FAIRING COMPOUND 202 over itself should follow minimum dry-to-sand times.
- Scratch sanding with P36–P60 grit is recommended to ensure adhesion between layers.
- Overcoating with other ALEXSEAL products including 302, 303, 328 and 442 can be done after the minimum time once the surface has been block sanded with P36–P120 grit.
- Finishing block sanding with P80 grit or finer helps prevent sand-scratch print-through in the final finish.
Applications and use cases
- Professional yacht and marine vessel fairing where a solvent-free epoxy filler is required.
- Fairing and filling of metal substrates primed with ALEXSEAL Protective Primer 161.
- Fairing of GRP substrates over ALEXSEAL Super Build 302, Finish Primer 442 or Protective Primer 161.
- Fairing applications both above and below the waterline (below waterline applications must be sealed with ALEXSEAL Finish Primer 442).
- Areas requiring higher build or deeper filling, where a thick base fairing compound provides efficient material build-up.
FAQ
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Can FAIRING COMPOUND 202 THICK BASE be used below the waterline?
Yes. ALEXSEAL Fairing Compound 202 can be used above and below the waterline, but applications below the waterline must be sealed with ALEXSEAL Finish Primer 442.
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What mixing ratio should I use with the converters?
Mix FAIRING COMPOUND 202 THICK BASE with the appropriate converter at 1:1 by volume or 10:6 by weight. The product must not be reduced.
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How can I tell if the base and converter are properly mixed?
The components have different colors. After thorough mixing, the filler should be a completely homogeneous color. Streaks indicate insufficient mixing and may lead to improper curing.
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What tools are recommended for application?
Use trowels, spatulas and straight-edge materials. Apply in thin layers and build up to the desired thickness, then pull out with a straight edge to avoid air pockets.
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Which grit should I use for sanding the cured fairing compound?
Block sand FAIRING COMPOUND 202 with P36–P120 grit. Finishing with P80 grit or finer helps prevent sand-scratch print-through.
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Do I need to sand ALEXSEAL Protective Primer 161 before applying the fairing compound?
No. ALEXSEAL Fairing Compound 202 may be applied directly to Protective Primer 161 without sanding for up to 6 months after primer application.
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What is the optimal temperature and humidity range for application?
The optimal environment is between 15°C and 30°C (60–85°F) with 40–80% relative humidity.
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Which converter should I use in colder conditions?
Use the Fast Converter (C2017) when application temperatures are below 15°C/60°F, but not below 10°C/50°F.
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How should I clean tools after use?
Clean application equipment with R4042 ALEXSEAL Epoxy Primer Reducer.
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Can I overcoat FAIRING COMPOUND 202 with other ALEXSEAL products?
Yes. After meeting minimum dry-to-sand times and block sanding with P36–P120 grit, you can overcoat with products such as ALEXSEAL 302, 303, 328 and 442.
Section 14 – Transport information
- UN number: UN 3077
- UN proper shipping name (ADR/IMDG/IATA): ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S. (containing 4,4'-isopropylidenediphenol, oligomeric reaction products with 1-chloro-2,3-epoxypropane and formaldehyde oligomeric reaction products with 1-chloro-2,3-epoxypropane and phenol)
- Transport hazard class: 9 (miscellaneous dangerous substances and articles)
- Packing group: III
- Environmental hazards: classified as environmentally hazardous for ADR; marine pollutant for IMDG; environmentally hazardous for IATA cargo and passenger transport.
- EmS code (IMDG): F-A, S-F
- ADR classification code: M7; hazard identification number: 90; tunnel restriction code: (-)
- IATA packing instructions: 956 for cargo and passenger aircraft; limited quantities: Y956.
- The transport information above refers to the unpackaged material as described in the safety data sheet. Actual classification may vary depending on packaging, mode of transport and regional regulations.
Section 8 – Individual protection measures
Based on the safety data sheet for ALEXSEAL P2083 FAIRING COMPOUND 202 THICK:
- Provide adequate ventilation using local exhaust and general extraction during mixing, application and sanding.
- Eye/face protection: wear safety goggles to protect against splashes.
- Hand protection: use chemical-resistant protective gloves tested according to EN 374, such as nitrile rubber or neoprene, with material thickness > 0.4 mm and breakthrough time > 480 minutes. Replace gloves immediately when damaged or worn.
- Use preventive skin protection (skin protection cream) and wash contaminated skin immediately.
- Skin and body protection: wear clothing as usual in the chemical industry. Wash skin after contact.
- Respiratory protection: no specific device is required under normal conditions, but avoid breathing vapors, dust from sanding, particulates and spray mist.
- Do not eat, drink or smoke while working. Avoid contact with skin, eyes and clothing.
- Hazard statements for the mixture include: causes skin irritation, may cause an allergic skin reaction, causes serious eye irritation and is toxic to aquatic life with long-lasting effects. Prevent product release to the environment.
*Contenido generado por IA
