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.

Weight	Code
250 g	2392

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

Type	Laminates, steel
Place	Above and below waterline
Function	Laminating, filling damages
Application	Brush, roll
Theoretical coverage	0,5 m²
Coats number	According needs
Pot life 20°C	10-15 min
Hardening time	45 min

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.

Also check

Parafina Sea-Line
Paraffin is an additive mainly to polyester gelcoats, necessary when it is necessary to apply
Parafina Sea-Line
Lamination – fiberglass and glassfabric
Fiberglass reinforcements, including boat mats and fiberglass fabrics combined with resin, are used for repairs
Lamination – fiberglass and glassfabric
Polymer
Is elastic sealant recommended for sealing and bonding various types of materials.
Polymer

Our FAQ answers to frequently asked questions

Do not add more hardener, because after the base has cured, the remaining hardener will react with subsequent layers, which will be applied to the surface and cause defects. For the product to work properly, please follow the proportions given by the manufacturer.

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.

Yes, you can paint the bottom of the boat with polyurethane paint due to its high mechanical strength. We recommend this solution when the boat is not launched for a long time and is not exposed to fouling.