Coremat 4mm – 39.37″ Width is a flexible nonwoven polyester core material designed for fiberglass and composite laminates. Its conformable construction allows it to follow curved and shaped surfaces while providing a fast and efficient way to build laminate thickness. Coremat can be used as both a core material and print blocker, helping increase laminate stiffness while reducing reinforcement pattern print-through on finished surfaces.
With a thickness of 4mm (approximately 0.157″) and a width of 39.37″ (1 meter), this Coremat is well suited for applications requiring more substantial laminate buildup. It is commonly used in marine hulls and decks, fiberglass panels, molds, automotive and transportation parts, tanks, tubs, and other composite structures.
The material is suitable for hand lay-up and spray-up processes and is compatible with common composite resin systems including polyester, vinyl ester, epoxy, and phenolic resins. For Lantor Coremat Xi 4mm, the manufacturer lists a nominal dry weight of approximately 105 g/m² and resin uptake of approximately 2.4 kg/m².
Key Features:
- Thickness: 4mm / approximately 0.157″
- Width: 39.37″ / 1 meter
- Sold by the running yard
- Flexible nonwoven polyester core material
- Builds laminate thickness quickly
- Adds rigidity and stiffness to composite parts
- Functions as a core material and print blocker
- Helps minimize fiberglass print-through
- Conforms well to curved and contoured surfaces
- Suitable for hand lay-up and spray-up
- Compatible with polyester, vinyl ester, epoxy, and phenolic resins
- Excellent for marine, tooling, transportation, industrial, and general fiberglass applications
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