27x1 - Hi-Gloss Top Coat/Additive - Clear (Polyester) (GALLON)
1 Gallon

27x1 - Hi-Gloss Top Coat/Additive - Clear (Polyester) (GALLON)

21-PRESTEC 27x1-G
  • In Stock: Available for same day shipping if ordered by 12 p.m. (PST)
  • Description: 27x1 is a clear top coat that doubles as a gelcoat additive to ensure air cure and a significantly harder surface when fully cured than gelcoat alone. With exceptional UV and scratch resistance, and a super clear glass-like appearance, this top coat is versatile enough to handle every project.
  • Special Handling Fee: This item is considered hazardous in volumes greater than gallon sizes and will include a special handling fee when ordered in individual units with volumes greater than a gallon. If shipped by air, this item will always require a special handling fee, regardless of volume.
  • Manufacturer: Prestec

Choose Options

Gallon- Hardest Clear
Gallon- Flat
MEKP Catalyst/Hardener (Included at No Cost)
Please Include Catalyst
Catalyst Not Needed


Gel Time: 16-20 min @ 77º F


Coverage (16 mils): 100 sf/gal


Flash Point: 98º F


Shelf Life: 6 months @ 68º F

Feature 5

Dust Free Time: 60 min @ 77º
Click for TDS
Click for Catalyst Guide Chart

Product Features
- Eliminate the use of Wax/PVA in Gel Coat when used as Additive
- Air Non-Inhibited Cure 
- Exceptional UV resistance
Buffs to a Super High Gloss Finish
- Refinishes to Original High Gloss Finish
- Super Clear - Glass-Like Appearance
- Scratch resistant
- Practically a Walk-Away Gloss Finish
- Very Low Viscosity
- Low VOC Product  

Product Applications
- Gelcoat Additive for Air-Cure Uninhibited Application
- Top Coat over Pigmented Gel Coat for Clear Depth
- Top Coat over Stains and Primers
Musical Instrument Wood Top Coat
- Automotive Interior Composite Parts Clear Coating
- Architectural Wood Crafts

Application Suggestions
- Mix Contents of Can Thoroughly
Optimum Temperature of 77º F
- Catalyze at 2% with MEKP initiator (20 cc/quart); Mix Well
- Utilization of HVLP spray gun optimizes finish
- Tip Size 1.7 - 2.5mm
- Air pressure 25-40 PSI
- Allow full cure (24 hours) prior to sand and polish or top coat application
- Maintain 12-18" distance between gun and surface 
- Start with flash coat (2 mils). Wait 2 minutes then start building coats of 4 mils per pass, up to optimum 24 mils

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