Composites – Durable and Versatile Materials for Repair and Construction


Composites are combination materials that merge the best properties of two or more substances. They are lightweight, yet extremely strong and durable – which is why composites are widely used across various industries, both for professional and hobby purposes.

With composite materials, you can repair, reinforce, or build almost anything – whether it’s a boat, a car, sports equipment, or even a designer object.

Common Applications:

  • Boat repair and reinforcement: hulls, cracks, reinforcements
  • Sports equipment: e.g. hockey sticks, skis, bicycle parts
  • Car repair: reinforcements, plastic part repairs, structural strengthening
  • Construction and renovation: walls and roofing structures, laminates, prototypes
  • Art and design: lightweight yet durable structures and shapes

Composite Types at a Glance:

  • Epoxy resin + fiberglass: A very strong and versatile combination suitable for a wide range of repairs and construction tasks. Excellent adhesion and durability.
  • Polyester resin + fiberglass: A cost-effective and faster-curing option, ideal for boats and larger surfaces.
  • Carbon fiber + epoxy resin: Lightweight and extremely strong – a high-performance solution for demanding technical and sporting applications.
  • Kevlar fiber: Exceptional impact resistance, often used together with epoxy for added toughness.

Need Help Choosing the Right Materials?

Check out our guides and tips for different types of projects – or just ask us directly! We’re happy to help you select the right composite materials and tools for your needs.

Fiber-reinforced composites


  • They are lightweight and strong structures
  • They save energy in vehicles
  • They stay airborne and float on water
  • They resist corrosion in pipes and tanks
  • They insulate against heat and electricity – or can be made electrically conductive if needed
  • They can even be manufactured by hand in a home garage
  • Even large products can be made on-site without massive factories or investments
  • They are easy to transport and install
  • Their strength can be locally optimized


Useful Links


Instructions for Composites

Komposiittirakenteet -kirja

Guide to Composites


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