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Composites and marine / Hulls · parts · marine structures

Composite marine construction

Before buying materials for a boat or marine part, define the laminating process, water exposure and expected loads. Distinguish the surface, first layer and structure; the following options serve different roles and must form a compatible system.

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Composite marine construction

Before you buy

Three points to guide your choice

01

Part and exposure

Distinguish a hull, deck and auxiliary component: loads and water contact change laminate requirements.

02

Laminate and surface

Resin wets out the reinforcement. The gelcoat, joints and other layers must suit the structure and manufacturing method.

03

Curing and project

Water resistance and mechanical performance depend on curing. If the project requires marine inspection, verify the approval of the system used.

What to buy for this project

Selected materials

Compare their purpose and conditions of use.
Check sizes and options on each product page.

01

The part surface

Gelcoat applied to the mould before laminating begins.

Crystic GT-600 WHITE Isophthalic Gelcoat - BRUSH

Gelcoat · in-mould marine surface

Crystic GT-600 WHITE Isophthalic Gelcoat - BRUSH

White Crystic GT-600 for forming the surface of marine parts by brush application to the mould.

Before choosing

Apply an even film to the mould and wait for the appropriate cure stage. The first laminate layer must be applied within 24 hours of gelcoat application. Coating a finished part requires the appropriate formulation and process.

02

The first laminate layer

An intermediate layer between gelcoat and structure.

Crystic VE679PA Hand Lay-Up Vinyl Ester-DCPD Resin

Skincoat · first laminate layer

Crystic VE679PA Hand Lay-Up Vinyl Ester-DCPD Resin

Crystic VE679 PA for the first laminate layer in marine construction, helping reduce pores and reinforcement print-through.

Before choosing

Acts as an intermediate layer between the surface and the rest of the laminate. Define compatibility with the gelcoat and structural resin and organise each layer's application time.

03

Hand lay-up and spray-up

Options for wetting out reinforcement in hulls and marine parts.

Crystic 489 PABTLV Hand Lay-Up Isophthalic Polyester Resin

Isophthalic polyester · marine laminating

Crystic 489 PABTLV Hand Lay-Up Isophthalic Polyester Resin

Crystic 489 PABTLV for making glass-fibre hulls and marine structures by hand lay-up or spray-up.

Before choosing

Plan a post-cure for the best long-term water resistance. For a vessel subject to inspection, confirm construction requirements and the approval applicable to the project.

ACT High Chemical Resistance Vinyl Ester Resin

Vinyl ester · marine parts

ACT High Chemical Resistance Vinyl Ester Resin

Vinyl ester ACT for making marine parts by hand lay-up or spray-up, with good hydrolysis resistance.

Before choosing

Thixotropy helps retain resin on sloping surfaces. Design the laminate and cure for the part: the thermal values in the data sheet are obtained with post-curing.

Crystic VE 677 PA High Chemical Resistance Epoxy Bisphenol Vinyl Ester Resin

Vinyl ester · marine laminates

Crystic VE 677 PA High Chemical Resistance Epoxy Bisphenol Vinyl Ester Resin

Crystic VE 677 PA for composite marine parts made by contact moulding, spray-up or filament winding.

Before choosing

Test the intended laminate first. For optimum performance and long-term stability, allow a post-cure cycle adapted to thickness and service temperature.

04

Infusion and injection

Epoxy systems for marine parts manufactured in closed moulds.

Resoltech 1800 Infusion Epoxy Resin

Epoxy · large structures by infusion

Resoltech 1800 Infusion Epoxy Resin

Resoltech 1800 for wetting out reinforcement in large marine structures by infusion or injection.

Before choosing

Allow for external infusion mesh or permeable or grooved and perforated cores to distribute the resin, and use dry reinforcements. The part requires heat curing before demoulding. Design and validate the laminate for its structural role.

Castropox 1233 Epoxy Resin for Infusion & Injection

Epoxy · marine parts by RTM and SCRIMP

Castropox 1233 Epoxy Resin for Infusion & Injection

Castropox 1233 for composite marine parts made by RTM injection or SCRIMP infusion.

Before choosing

The process requires heat curing; the data sheet uses 6 hours at 70 °C as a reference condition. Define reinforcement, flow and thicknesses according to the part's function.

RESOLTECH 1080S Epoxy Laminating & Infusion Resin

Epoxy · foils and lightweight boats

RESOLTECH 1080S Epoxy Laminating & Infusion Resin

Resoltech 1080S for composite foils, kayaks and lightweight boats where high stiffness and low weight are required. Supports hand lay-up, infusion and injection.

Before choosing

Plan post-curing if you need the thermal and mechanical performance in the data sheet. When adding layers to a cured laminate without peel ply, sand, clean and degrease before continuing.

Does your project have other requirements?

Tell us about the process, materials and working conditions.

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