USC ICING® Polyester finishing putty


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USC ICING® Polyester finishing putty

Icing® Pourable Brushable Polyester Finishing Putty is the original, best selling polyester finishing putty that spreads smoothly, self levels, and dries to an exceptionally easy to sand finish. Icing provides great adhesion and is tack free and stain free.

Features and Benefits

  • You can use it on a variety of substrates like steel, aluminum, fiberglass and many more
  • Ideal for minor body work and surface imperfections like sand scratches, chips, pinholes and more
  • Top Coat: Polyester, 2K urethane or 1 K primer
  • Easy to use, ultra smooth, stain free and tack free
  • Available in 24 oz. tube or 30 oz. pump

How to use fiberglass filler

  • For best results, bring putty and provided hardener to room temperature (minimum temperature 68ºF). Knead hardener tube before use. Place a 4” diameter puddle of putty on a clean mixing surface (we recommend a non-absorbent plastic mixing board) and add a ribbon of cream hardener from edge to edge across the center of the putty puddle (puddles larger than 4” will require additional hardener); or measure hardener at 2% by weight – a 50-1 ratio. Mix thoroughly with a plastic spreader, using a folding motion, until uniform color is achieved. At room temperature (68ºF) approximate setting time is 3-5 minutes


  1. Clean surface. Remove all dirt, oil, grease and wax with a cleaning solvent such as 1240-1 Wax, Grease & Silicone Remover.
  2. Make sure surface is dry before repairing.
  3. Use 80 – 180 grit disc to feather edge paint for good mechanical adhesion


  1. Using a plastic spreader, apply a thin layer of putty to surface, using firm pressure for maximum adhesion.
  2. Sand previous layer before applying additional layers, building up damaged area higher than the surrounding surface to allow for sanding of the putty. Do not apply over fresh or uncured coatings

Suitable Substrates:

  • Steel
  • Concrete
  • Aluminum
  • Masonry
  • Fiberglass
  • Wood
  • SMC – can be used for cosmetic repairs. For structural repairs prone to high degrees of stress and flexibility, use an SMC repair product

Technical Specifications:

  • Appearance as Packaged: Off-White
  • VOC
  • Packaged: 281 g/l
  • Applied: 2.2 g/l
  • Weight Per Gallon (Density): 9.5 pounds (Average)
  • Maximum Recommended Thickness (sanded): 1/8"
  • Viscosity @ 77°F: 18,000 cps
  • Gel Time @ 77°F: 3.0 – 4.5 minutes
  • Shore "D" Hardness Values @ 24 hours: 55-60
  • Sanding Time @ 77°F: 15 minutes
  • Maximum Heat 200ºF for 30 minutes
  • Catalyst Required Benzoyl Peroxide
  • Catalyzation Ratio 2% by weight (50:1 ratio)
  • Exotherm Temperature 220ºF (Average)
  • Tack Free Time 10 - 15 minutes

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