Customized Chopped Strand Mat High Performance Designed For Saltwater Exposed Structures

        Our Customized Fiberglass Composite Mat is a high-performance hybrid fiberglass reinforcement designed for ship hulls,marine structures,FRP pipes,tanks,industrial panels,and other composite components exposed to demanding structural and saltwater environments.Unlike conventional single-layer chopped strand mat,this product range can combine stitched fiberglass mat with woven roving,biaxial or multiaxial fiberglass fabrics,surface veils,or lightweight sandwich core materials. These hybrid reinforcement structures allow composite manufacturers to select the appropriate combination of multidirectional reinforcement,directional strength,surface quality,and laminate thickness for different FRP applications.Available in multiple constructions from lightweight surface composites to heavy-duty structural reinforcements,the product range is compatible with polyester,vinyl ester,and epoxy resin systems. Customized fiber orientation,total grammage,width,and composite structure can also be supplied according to marine,industrial,automotive,wind energy,and infrastructure requirements.

Fiberglass Composite Mat Specifications

Key Advantages of Fiberglass Composite Mat

1. Hybrid Reinforcement Structure

Fiberglass composite mat combines different reinforcement layers into a single engineered material.

Depending on the required application,the structure can include chopped or stitched fiberglass mat,woven roving,biaxial fabric,multiaxial fabric,surface veil,or lightweight core materials.

This allows the reinforcement system to provide different mechanical and processing characteristics within one composite material.

2. Suitable for Marine & Saltwater-Exposed Structures

Selected composite mat constructions are designed for marine FRP applications such as ship hulls,decks,pipe rehabilitation,and other structures exposed to humid or saltwater environments.

When combined with an appropriate marine-grade polyester or vinyl ester resin,the fiberglass reinforcement can be incorporated into corrosion-resistant FRP laminate systems.

Actual long-term saltwater resistance depends on the complete laminate design,resin system,glass-resin interface,manufacturing quality,and operating environment.

3. Multidirectional Structural Reinforcement

Biaxial and multiaxial composite mats provide directional fiberglass reinforcement through fiber orientations such as 0°/90° and ±45°.

These structures are useful when composite components require reinforcement in multiple loading directions rather than relying only on randomly oriented chopped fibers.

4. Combination of Mat and Woven Roving

Stitched mat + woven roving composite structures combine randomly distributed fiberglass reinforcement with woven directional fibers.

This configuration can simplify laminate construction and provide both multidirectional reinforcement and higher directional mechanical performance.

EWRM series products are examples of this type of composite reinforcement.

5. Good Resin Compatibility

The fiberglass composite mat range is suitable for commonly used thermoset composite resin systems,including:

• Unsaturated Polyester Resin

• Vinyl Ester Resin

• Epoxy Resin

The appropriate resin should be selected according to the final application,chemical exposure,manufacturing process,and required structural performance.

6. Multiple Structural Configurations

Different fiberglass composite constructions can be selected according to application requirements.

Available structures include:

• Stitched Mat + Woven Roving

• Chopped/Stitched Mat + Biaxial Fabric

• Chopped/Stitched Mat + Multiaxial Fabric

• Fiberglass Reinforcement + Surface Veil

• Fiberglass Reinforcement + PP Core

• Customized Multilayer Reinforcement Structures

7. Suitable for Complex FRP Manufacturing

Hybrid fiberglass mats can reduce the need to position several individual reinforcement layers separately during composite manufacturing.

A pre-combined reinforcement structure may simplify material handling and help maintain more consistent layer positioning during hand lay-up,spray-up,RTM,vacuum infusion,and other composite processes.

8. Flexible Customization

Composite mat construction can be adjusted according to required fiber orientation,grammage,width,reinforcement layers,and core material.

The current product range lists custom fiber angles up to ±60°,product weights from approximately 200–4000 g/m²,and different core material options including PP and balsa. 

Fiberglass Composite Mat Applications

1. Ship Hulls & Marine Structures

Fiberglass composite mat can be used in marine FRP laminate systems for ship hulls,decks,bulkheads,and other structural components.

Hybrid constructions combining mat,woven roving,or multiaxial reinforcement allow manufacturers to tailor laminate structures according to mechanical loads,geometry,and manufacturing process.

For saltwater exposure,the reinforcement should be combined with an appropriate marine or corrosion-resistant resin system.

2. Marine Decking

Woven roving composite mats such as EWRM1050 can be used in selected marine decking and shipbuilding applications.

The combination of mat and woven reinforcement provides both random and directional fiberglass reinforcement in the laminate.

3. FRP Pipes & Pipe Rehabilitation

Hybrid fiberglass mat can be used in new FRP pipe construction and selected pipe rehabilitation systems.

Different structures can be chosen according to required circumferential,longitudinal,and multidirectional reinforcement.

4. FRP Tanks & Chemical Equipment

Fiberglass composite mat can be incorporated into tanks,chemical vessels,and other FRP equipment.

Vinyl ester or another suitable corrosion-resistant resin system should be selected according to the chemicals,temperature,and service environment involved.

5. Wind Turbine Components

Biaxial and multiaxial fiberglass composite mats can be used in selected wind energy composite structures.

Models such as ELTM800/225 and EMK450+BX800 are listed for wind turbine blade and heavy-duty blade reinforcement applications. 

6. Automotive Composite Components

Selected biaxial composite mat constructions can be used for automotive structural and molded FRP parts.

±45° fiberglass orientation is particularly useful in composite structures requiring reinforcement under shear or multidirectional loading.

7. Infrastructure & Construction

Hybrid fiberglass mats can be used in selected infrastructure and construction composite applications,including panels,partitions,pipe rehabilitation,and structural FRP components.

Material selection should be based on design load,environmental exposure,resin system,and required laminate thickness.

8. Lightweight Sandwich Panels

Fiberglass composite mats can also be combined with lightweight core materials such as polypropylene.

Sandwich constructions provide a thicker composite structure without relying exclusively on solid fiberglass reinforcement.

These structures can be considered for transportation,industrial equipment,and panel applications where stiffness,weight,and insulation requirements must be balanced.

Technical Specifications – Woven Roving Composite Mats

These products combine mat reinforcement with woven roving to create a hybrid structural fiberglass reinforcement suitable for selected marine,pipe,and construction applications. 

Technical Specifications – Biaxial Composite Mats

Biaxial and multiaxial reinforcements should be selected according to the load direction,laminate structure,and mechanical requirements of the finished composite component. 

Surface Finish Composite Options

Surface veil composite structures can be selected when the laminate requires both fiberglass reinforcement and a finer external or internal surface layer.

For projects where surface roughness is a critical engineering requirement,the relevant test method and product data should be confirmed before specification. 

Sandwich Composite Options

PP sandwich core composite structures can provide increased laminate thickness while limiting the amount of solid fiberglass reinforcement required.

Actual structural,thermal,acoustic,and fire performance should be verified according to the final panel design and applicable test standard.

Resin Compatibility

For saltwater-exposed structures,resin selection is especially important.

Fiberglass reinforcement itself is only one part of the laminate system. Long-term water absorption,osmotic resistance,chemical resistance,and durability depend heavily on the selected resin,laminate construction,gel coat or barrier layer,and manufacturing quality.

Manufacturing Processes

1. Hand Lay-Up

Stitched mat + woven roving composite mats are suitable for selected hand lay-up FRP manufacturing.

The combined structure allows multiple reinforcement functions to be incorporated into a single material,which can simplify lay-up compared with installing separate mat and woven roving layers individually.

2. Spray-Up

Selected composite mats can be incorporated into spray-up laminate structures where additional directional or structural fiberglass reinforcement is required.

3. RTM

Surface veil and structural composite mats can be selected for Resin Transfer Molding according to resin flow,mold geometry,and finished surface requirements.

4. Vacuum Infusion

Biaxial,multiaxial,and selected surface composite reinforcements can be used in vacuum infusion applications.

The reinforcement architecture should be matched to resin viscosity,flow path,laminate thickness,and infusion strategy.

5. Pultrusion

Surface veil composite products such as PEC240 are listed for pultrusion applications.

Hybrid reinforcement can be combined with continuous rovings according to the strength and surface requirements of pultruded profiles.

How to Choose the Right Fiberglass Composite Mat

For marine and saltwater-exposed applications,customers should provide the service environment,resin system,required laminate structure,and expected mechanical loading before final material selection.

Custom Fiberglass Composite Mat

Customized reinforcement structures can be supplied according to different composite manufacturing requirements.

Customers can provide an existing laminate design or target reinforcement specification for evaluation.

Quality Control

Consistent reinforcement construction is important for predictable composite manufacturing and laminate performance.

Key quality characteristics include:

• Total grammage

• Individual reinforcement layer grammage

• Fiber orientation

• Width and width tolerance

• Moisture content

• Fiber distribution

• Stitching stability

• Layer bonding and alignment

• Surface condition

• Roll dimensions

• Packaging integrity

The current product page references ASTM D3656 in its critical parameter section. For projects requiring a specific ASTM,ISO,EN,DNV,ABS,or other marine standard,the applicable certification and supporting test documentation should be confirmed before ordering. 

Packaging & Shipping

The actual roll length,roll weight,pallet quantity,and container loading depend on composite structure,grammage,width,and customer packaging requirements. 

Storage Guidelines

1. Keep the Material Dry

Store fiberglass composite mats in a dry warehouse and protect them from rain,condensation,and excessive humidity.

2. Maintain Original Packaging

Keep the rolls in their original protective packaging until they are required for production.

3. Protect Against Deformation

Store rolls on suitable pallets or racks and avoid excessive loading that could damage the reinforcement structure.

4. Avoid Direct Sunlight

Protect the material from prolonged UV exposure and outdoor storage.

5. Prevent Contamination

Keep fiberglass reinforcement away from oil,dust,chemicals,and other contaminants that may interfere with resin wet-out or laminate performance.

6. Control Storage Environment

For projects with strict processing requirements,maintain stable warehouse temperature and humidity and allow material to acclimatize before use if necessary.

Frequently Asked Questions About Fiberglass Composite Mat

1. What is fiberglass composite mat?

Fiberglass composite mat is a multilayer reinforcement material that combines two or more fiberglass or core structures into one engineered reinforcement.

Typical combinations include stitched mat + woven roving,mat + biaxial fabric,mat + multiaxial fabric,surface veil + reinforcement,and fiberglass mat + lightweight core.

2. Is this product the same as ordinary chopped strand mat?

No.

Conventional chopped strand mat normally consists primarily of randomly distributed chopped glass fibers bonded into a single mat layer.

This product range includes hybrid reinforcement structures that combine different fiberglass materials to provide additional directional strength,surface properties,or laminate thickness.

3. Can fiberglass composite mat be used for ship hulls?

Yes. Selected composite structures can be used in FRP ship hull and marine laminate systems.

EWRM1050 and EWRM1250 are examples of woven roving composite mats listed for marine and ship lamination applications.

4. Is this fiberglass reinforcement suitable for saltwater exposure?

Fiberglass composite reinforcement can be used as part of an FRP laminate designed for saltwater environments.

However,saltwater durability depends on the entire composite system,especially the resin,barrier layer,gel coat,glass-resin interface,manufacturing quality,and laminate design.

Vinyl ester resin is commonly considered for applications requiring increased corrosion or water resistance.

5. What is the difference between woven roving composite mat and biaxial composite mat?

Woven roving composite mat combines a mat layer with woven fiberglass fabric.

Biaxial composite mat combines mat reinforcement with non-crimp directional fibers,such as ±45° or 0°/90° orientations.

The appropriate structure depends on the required mechanical load direction and manufacturing process.

6. What models are available for marine applications?

The current range includes:

• EWRM1050 – 450g Mat + 600g Woven Roving

• EWRM1250 – 450g Mat + 800g Woven Roving

Other customized biaxial or multiaxial structures can also be evaluated according to the marine laminate design.

7. What resins can be used with fiberglass composite mat?

The current product range lists compatibility with:

• Unsaturated Polyester Resin

• Vinyl Ester Resin

• Epoxy Resin

The appropriate resin should be selected according to application,environment,manufacturing process,and required performance.

8. Can the fiber orientation be customized?

Yes.

Depending on the composite structure,fiber orientations can include 0°,90°,±45°,and other customized multiaxial configurations.

The current product page also lists custom fiber angles up to approximately ±60°. 

9. Can fiberglass composite mat be customized by weight?

Yes.

The current product page lists customized composite reinforcement weights from approximately 200–4000 g/m².

Actual available constructions depend on reinforcement type,width,layer combination,and manufacturing requirements.

10. Can this material be used for vacuum infusion?

Yes. Selected biaxial,multiaxial,and surface composite structures can be suitable for vacuum infusion.

The exact reinforcement structure should be evaluated according to resin flow,laminate thickness,mold geometry,and required mechanical properties.

11. Can you combine fiberglass mat with woven roving?

Yes.

Stitched mat + woven roving composite is one of the main structures offered in this product range.

Examples include EWRM1050 and EWRM1250.

12. Can you sanproduce dwich composite reinforcement?

Yes.

The product range includes PP core + fiberglass mat sandwich constructions.

Other core materials may also be evaluated according to the required panel structure.

13. What width is available?

The current product specification lists a width range of approximately 1040–3800 mm with a stated tolerance of ±3 mm. 

14. What information should I provide when requesting a quotation?

For an accurate quotation,please provide:

• Final application

• Required fiberglass structure

• Total grammage

• Individual layer grammage if known

• Fiber orientation

• Required width

• Resin system

• Manufacturing process

• Required quantity

• Destination country or port

• Marine,chemical,or environmental exposure requirements

If you already have a laminate drawing or reinforcement specification,you can also provide it for product selection.

Why Choose WGSC Composite?

WGSC Composite supplies fiberglass reinforcement materials and customized composite solutions for marine,industrial,automotive,wind energy,infrastructure,pipe,tank,and other FRP applications.

Our fiberglass composite mat range includes woven roving composite mats,biaxial and multiaxial reinforcements,surface composite materials,and lightweight sandwich structures.

Customers can select or customize reinforcement according to fiber direction,total grammage,width,resin system,manufacturing process,and final structural requirements.

Whether you are sourcing marine fiberglass composite mat,hybrid fiberglass reinforcement,stitched mat with woven roving,biaxial fiberglass mat,or customized reinforcement for saltwater-exposed FRP structures,we can provide specification and customization support according to your project requirements.

Request a Quote

Looking for a customized fiberglass composite mat for marine or structural FRP applications?

Please send us your:

Application · Composite Structure · Grammage · Fiber Orientation · Width · Resin System · Manufacturing Process · Quantity · Destination

Contact WGSC Composite for product specifications,custom fiberglass reinforcement requirements,and quotation support.