Marine-Chopped Strand Mat (CSM)

Our focus is simple: consistent quality, dependable supply and competitive pricing, backed by UK-based accountability.

CSM remains the backbone of GRP boat construction, and we specialise in the grades and specifications actually used in UK marine environments — not niche materials that look good on paper but don’t perform in the yard.

For a quote or more information, call us on:

01603 567490

300 GSM Fibreglass

Testing for our 300 GSM chopped strand mat fibreglass

450 GSM Fibreglass

Testing for our 450 GSM chopped strand mat fibreglass

600 GSM Fibreglass

Testing for our 600 GSM chopped strand mat fibreglass
Woven Carbon Fibre Fabrics being used in marine boat construction like a f1h20 race boat

Woven Carbon Fibre Fabrics

Plain Weave

&

Twill Weave

  • Hull reinforcement
  • Deck skins
  • Bulkheads
  • Structural stiffening
  • Weight reduction vs glass

For a quote or more information, call us on:

01603 567490

Our Marine CSM Range

We supply E-Glass Chopped Strand Mat, compatible with polyester and vinyl ester resin systems, suitable for hand lay-up and general laminating.

300 GSM

300 GSM Emulsion CSM Fibreglass

Lightweight and flexible, offering excellent conformability, fast wet-out, and reliable laminate performance. The emulsion binder allows the fibres to break down quickly during lay-up, ensuring smooth resin flow and strong interlaminar bonding. The light weight makes it particularly effective for contouring over complex mould shapes while maintaining consistent strength and finish quality.

450 GSM

450 GSM Emulsion CSM Fibreglass

Medium weight chopped strand mat offering excellent balance between strength and workability. The emulsion binder ensures fast wet-out and efficient fibre breakdown, allowing for strong interlaminar bonding and consistent laminate consolidation. The weight weight provides greater reinforcement per layer, making it well suited for primary laminate build-up and structural applications within GRP hull and deck construction.

600 GSM

600 GSM Emulsion CSM Fibreglass

Heavy duty chopped strand mat providing maximum strength, thickness and durability. The emulsion binder allows the fibres to disperse effectively during lamination, supporting solid consolidation and dependable laminate integrity.

This mat delivers significant reinforcement per layer, reducing the number of layers required to achieve structural thickness in hull and deck construction. It is particularly suited to high-load and impact-prone areas within marine builds.

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