ZeAllgrate Fiberglass Fabric — Complete Specifications
The reinforcements behind ZeAllgrate FRP grating
Fiberglass fabric supplies the tensile reinforcement of every FRP grating laminate. Woven roving gives directional strength; chopped strand mat builds a resin-rich, isotropic matrix; surface veil gives a corrosion-facing, fiber-free finish.
Woven roving (WR)
Bidirectional woven continuous roving — the primary load-bearing fabric in the laminate, chosen by weight (300 – 800 g/m²) for stiffness.
Chopped strand mat (CSM)
Random-length strands bonded with an emulsion binder — builds thickness, adds resin-rich corrosion barrier and improves through-thickness toughness.
Surface veil (C-veil)
A thin, resin-rich tissue layer laid on the exposed face — prevents fiber bloom, pins glass away from corrosive media and gives a smooth, paintable surface.
| Standard glass type | E-glass (electrical-grade) for ≈ 99% of grating reinforcement |
| Chemical veil | C-glass veil for the corrosion-facing surface layer |
| Standard widths | 1000 / 1270 / 2000 mm rolls; veils down to 280 mm |
| Standard roll length | 50 m (CSM) · 100 m (woven roving / veil / combination) |
Weave, weight, dimensions and typical use
Weights (g/m²) and thicknesses are nominal mill values; thickness varies with resin uptake in the laminate.
| Product Type | Weave / Construction | Weight (g/m²) | Width (mm) | Roll Length (m) | Thickness (mm) | Typical Use |
|---|---|---|---|---|---|---|
| E-glass Woven Roving | Plain weave (woven roving) | 300 | 1000 – 2000 | 100 | ≈ 0.25 | General hand lay-up; surface & structural layers |
| E-glass Woven Roving | Plain weave (woven roving) | 400 | 1000 – 2000 | 100 | ≈ 0.35 | General structural lay-up; grating reinforcement |
| E-glass Woven Roving | Plain weave (woven roving) | 600 | 1000 – 2000 | 100 | ≈ 0.50 | Medium-heavy structural plies; mould faces |
| E-glass Woven Roving | Plain weave (woven roving) | 800 | 1000 – 2000 | 100 | ≈ 0.65 | Heavy structural plies; thick sections, moulds |
| Chopped Strand Mat (CSM) | Random chopped strands, emulsion binder | 300 | 1000 – 2000 | 50 | ≈ 0.90 | Surface & build plies; resin-rich barrier |
| Chopped Strand Mat (CSM) | Random chopped strands, emulsion binder | 450 | 1000 – 2000 | 50 | ≈ 1.35 | Build plies; bulk-up and corrosion barrier |
| C-veil / Surface Veil | Needled/surface tissue veil | 30 | 280 – 1000 | 100 | ≈ 0.03 | Resin-rich corrosion barrier; prevents fiber bloom |
| C-veil / Surface Veil | Needled/surface tissue veil | 50 | 280 – 1000 | 100 | ≈ 0.05 | Thicker surface barrier; chemical-facing layer |
| Combination Fabric (mat + roving) | Woven roving sandwiching CSM, stitched | 600 | 1000 – 2000 | 100 | ≈ 1.0 | Balanced lay-up in one step; grating laminate |
| Combination Fabric (mat + roving) | Woven roving sandwiching CSM, stitched | 900 | 1000 – 2000 | 100 | ≈ 1.5 | High-build structural lay-up; mould & repair |
Values are typical mill specifications; confirm exact weight, width and sizing against the mill certificate (mill test report) for your resin system.
Fabric-level values per ASTM textile test methods
Tensile values are for the fabric (g/m²-class dependent); laminate strength depends on glass loading and resin and is listed on the grating specification pages.
| Property | Test Method | Typical Value |
|---|---|---|
| Tensile strength, warp | ASTM D5034 / D5035 | ≈ 1500 – 2500 N/50 mm (woven roving, by weight) |
| Tensile strength, weft | ASTM D5034 / D5035 | ≈ 1500 – 2500 N/50 mm (balanced weave) |
| Tensile modulus (single yarn) | ASTM D2101 | ≈ 72 – 76 GPa (E-glass) |
| Weave / fabric count | ASTM D3775 | Warp ≈ 2 – 6 ends/cm · weft ≈ 2 – 6 picks/cm (by weight) |
| Yarn type | — | Direct woven roving, 600 – 2400 tex |
| Moisture content | ASTM D779 / gravimetric | < 0.5% |
| Combustible content (sizing / binder) | Ignition loss | 3 – 8% by weight |
| Glass density | ASTM D792 | ≈ 2.54 g/cm³ (E-glass) |
| Resin compatibility (sizing) | — | Silane sizing matched to polyester / vinyl ester / epoxy |
| Elongation at break | ASTM D5035 | ≈ 3 – 5% |
E-, C-, AR- and S-glass comparison
E-glass is the default for FRP grating; C-glass is used for chemical-facing veil; AR and S-glass are specialist reinforcements.
| Glass Type | Density (g/cm³) | Tensile Modulus (GPa) | Tensile Strength (MPa) | Typical Role |
|---|---|---|---|---|
| E-glass (electrical) | ≈ 2.54 g/cm³ | ≈ 72 – 76 GPa | ≈ 2400 – 3400 MPa | General purpose — ≈ 99% of FRP reinforcement; standard grating |
| C-glass (chemical) | ≈ 2.49 g/cm³ | ≈ 68 – 72 GPa | ≈ 2400 – 3100 MPa | Chemical / corrosion-facing veil; resists acid attack |
| AR-glass (alkali resistant) | ≈ 2.68 g/cm³ | ≈ 70 – 76 GPa | ≈ 2500 – 3500 MPa | Concrete / cement reinforcement; resists alkaline cement |
| S-glass (high strength) | ≈ 2.49 g/cm³ | ≈ 86 – 90 GPa | ≈ 4000 – 4900 MPa | Aerospace / high-performance; premium strength at higher cost |
E-glass accounts for ≈ 99% of general FRP reinforcement. C-glass veil is the standard corrosion-facing layer; AR-glass is reserved for cement/concrete reinforcement where alkaline exposure would degrade E-glass.
Wet-out and sizing match
Fabric sizing must match the resin system; mismatch reduces inter-laminar shear and corrosion performance.
| Resin System | Wet-out Characteristics | Sizing Compatibility | Typical Application |
|---|---|---|---|
| Polyester (ortho / iso) | Excellent wet-out; fast cure | Standard polyester-compatible silane sizing | General grating, hand lay-up, moulds |
| Vinyl ester (VE) | Good wet-out; allow slightly longer gel time | VE-compatible sizing recommended for best bond | Corrosion-grade grating & repair laminates |
| Epoxy | Excellent wet-out; thixotropic build | Epoxy-compatible sizing (avoid polyester sizing) | Molds, structural repair, tooling |
| Phenolic | Moderate wet-out; careful lay-up | Low-profile sizing; test compatibility | Fire/smoke-critical laminates |
Corruption surface veil
C-veil on the exposed face locks a resin-rich barrier against chemicals and prevents fiber bloom.
Hand lay-up / moulding
Woven roving + CSM builds the grating laminate by hand lay-up and compression moulding.
Mould construction
Combination fabrics and heavy woven roving build rigid, dimensionally stable moulds.
Repair kits
CSM + woven roving repair packs for field touch-up and edge rebuilding.
Corrosion barrier layers
Extra CSM / veil plies on the media-facing side for harsh chemical service.
Surface finish
Veil gives a smooth, non-glass-exposed face suitable for gel-coat and painting.
Keep fabric dry and within shelf life
Dry storage
Store on pallets, indoors, at 15 – 30 °C and < 65% RH; keep rolls wrapped until use.
Shelf life
12 months from production when stored sealed and dry; use oldest stock first.
Cutting tools
Carbide-bladed shears or fabric cutters; avoid fraying — bind cut edges as needed.
Handling PPE
Wear gloves and a dust/particulate respirator when cutting dry fabric; eye protection recommended.
Fabric layer stack in a typical FRP grating laminate
Schematic, not to scale. The resin-rich C-veil faces the media; woven roving and mat build the structural core.
Fabric weights, counts and physical values are typical mill specifications for E-glass reinforcements; final laminate design uses the exact fabric/resin combination on the batch COA. Contact [email protected] for fabric datasheets and sizing compatibility.
Fabric Specification Summary
| Reinforcement | Typical Weight / Count | Typical Use in Grating Laminates |
|---|---|---|
| Woven roving (WR) | 600–800 g/m² | Bulk reinforcement in hand-laid laminates and grating bars |
| Chopped strand mat (CSM) | 300–600 g/m² | Multi-directional strength, resin uptake, interlayer bonding |
| Surface veil (C-veil) | 30–50 g/m² | Corrosion barrier and finish surface on the laminate face |
Lay-Up Design and Usage
Laminate performance comes from the stack, not any single layer: a corrosion barrier of surface veil backed by CSM, then WR for stiffness, then a finish veil — the same architecture used in ZeAllgrate's molded grating corrosion surface. When ordering fabric for a laminate, specify weight, weave and glass type (E, C, AR or S) against the service — AR glass for cementitious contact, C-veil for the chemical barrier, E-glass for general structural work. Resin uptake is planned at ~1.5–2.0× fabric weight for mat layers, so the resin quantity is calculated from the fabric bill, not guessed.
Storage and Handling
- Store fabric dry and flat, off the floor, away from direct UV; moisture pickup degrades sizing and wet-out.
- Observe shelf life — aged fabric wets out poorly and produces weak laminates.
- Cut with sharp scissors or a rotary cutter; wear gloves — glass dust and fibre ends irritate skin.
- Keep rolls sealed between uses; discard material that has absorbed moisture or lost its sizing.
- Store fabric dry and flat, off the floor, away from direct UV; moisture pickup degrades sizing and wet-out.
- Observe shelf life — aged fabric wets out poorly and produces weak laminates.
- Cut with sharp scissors or a rotary cutter; wear gloves — glass dust and fibre ends irritate skin.
- Keep rolls sealed between uses; discard material that has absorbed moisture or lost its sizing.
Approved by Industry Bodies, Tested to International Standards
Every ZeAllgrate shipment is backed by documented quality systems, marine approvals and independent third-party verification.
ISO 9001:2015
Certified quality management system — since 2004.
DNV & ABS Marine
Marine-grade grating for offshore platforms and vessel decks.
SGS & Intertek
Independent third-party inspection and load testing on request.
OSHA 1910.23
Handrail systems load-tested to US federal requirements.
Material certificates, COA, ASTM test reports and compliance documentation supplied with every order. View certifications →
Need a Fabric Datasheet for Your Laminate?
Tell us your resin system and laminate build — we return fabric weights, sizing match and a suggested ply schedule within 24 hours.