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Polyester repair kit

The polyester repair kit includes polyester structural resin along with fiberglass mat.

Sea-Line® polyester resin combined with fiberglass mat is used for manual repairs, recommended for laminating, reinforcing surfaces, patching holes – especially in situations where the speed of repair execution is crucial.

WeightCode
250 g2392
Polyester repair kit

Technical informations

Color

  • Clear

Application method

Manually:

  • Brush
  • Roller

Product description "Polyester repair kit"

  • Sea-Line® structural polyester resin is recommended for laminating, reinforcing the surface, and patching holes and damage – especially in situations where the most important is a fast repair time.
  • In conjunction with the glass mat, it is used for manual repairs of damage.To obtain a fully-fledged and adequately strong laminate, use a 2:1 weight ratio of resin to glass mat for polyester or a 1:1 weight ratio of resin to glass fabric.
  • To finish laminated surfaces we recommend using Sea-Line® fillers, Sea-Line® epoxy primers, Sea-Line® topcoats or a Sea-Line® gelcoat repair kit.

The set includes:

  • a polyester structural resin
  • hardener
  • fibre glass mat (0,25m2)
  • disposable gloves
  • a brush and a cup with a scale for easy dosing of ingredients
  • instructions for repair

Basic information

TypeLaminates, steel
PlaceAbove and below waterline
FunctionLaminating, filling damages
ApplicationBrush, roll
Theoretical coverage0,5 m²
Coats numberAccording needs
Pot life 20°C10-15 min
Hardening time45 min

Surface preparation

  • Prepare a suitable piece of glass mat (approximately 2 cm beyond the damaged area).
  • Degrease the surface and sand it with P80-P180 sandpaper. Remove dust and degrease again.
  • Apply the prepared resin mixed with the hardener to the cleaned area with a brush.
  • Apply the prepared mat or fabric pieces. Thoroughly saturate the glass mat with resin, pressing with a brush or roller to completely remove air bubbles from the repair area.
  • If necessary, apply multiple layers of mat or fabric using a similar method.

To achieve a high-quality and sufficiently strong laminate, use the following weight ratio:

  • For mats, a 2:1 ratio – 2 kg of resin for 1 kg of powdered glass mat.
  • For fabrics, a 1:1 ratio – 1 kg of resin for 1 kg of glass fabric.

Further work

For finishing laminated sections, we recommend using products such as:

  • Sea-Line® epoxy fillers,
  • then Sea-Line® epoxy primers,
  • and finally Sea-Line® topcoats.

You have questions about the product - Polyester repair kit

    Also check

    Our FAQ answers to frequently asked questions

    Can I use selfpolishing Sea-Line and HARD Sea-Line antifoulings on aluminium boat?

    Sea-Line HARD and Sea-Line self-polishing antifouling are not intended for aluminum surfaces. They include copper oxide, which in contact with aluminum causes galvanic corrosion. Especially on aluminum, we offer ALU-PLUS self-polishing anti-fouling paint, which, in addition to excellent adhesion to aluminum, is also 30% more effective than traditional anti-fouling paints.

    Is it necessary to always sand the surface between application of two different products?

    We recommend to always sand the surface between applying two different products to ensure uniform surface roughness and adhesion of subsequent layers. The sanded surface should also be cleaned and degreased.

    Why does the paint have no adhesion?

    Possible causes

    • Wrong surface preparation,
    • Skipping the primer in the system application process,
    • Use of universal thinners or replacements ,
    • Paint incompatibility.

    How to prevent

    • Correct surface preparation (grinding, clearing, degreasing),
    • Use primers which improve adhesion of paints,
    • Use thinners which are dedicated to each paints,
    • Use of paints which are compatible to each other.

    How to remove

    • Grind, clean and paint again.
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