Professional-Grade FRP/GRP Stair Safety Solutions for Industrial, Commercial & Marine Applications
Product Overview
Anti-slip fiberglass stair tread covers are engineered safety components manufactured from high-performance Fiberglass Reinforced Plastic (FRP) and Glass Reinforced Plastic (GRP) composites. These pre-fabricated panels feature integrally bonded mineral aggregate surfaces designed to provide slip resistance in challenging environments.
Designed for retrofit installation over existing concrete, steel, wood, or brick stairs, these covers provide slip-resistant traction, durability, and long-term value as a retrofit option over existing stairs.
Key Performance Benefits:
- Coefficient of friction (COF) is designed to meet or exceed common ADA and OSHA slip-resistance recommendations
- Long service life (application dependent) with low maintenance requirements
- Corrosion-resistant, UV-stabilized, and chemical-resistant construction
- High-visibility yellow safety nosing for enhanced step definition
- Installation typically faster than full staircase replacement
Our anti-slip fiberglass stair tread covers is manufactured by pultrusion for consistent quality. Related FRP solutions: pultruded FRP profiles, FRP rebar, pultrusion machines, and pultrusion dies.
Technical Specifications
Material Composition & Construction
| Component | Specification | Standard |
|---|---|---|
| Base Resin | Isophthalic polyester or vinyl ester thermoset resin | ASTM D2583 |
| Reinforcement | Continuous filament fiberglass mat/roving | ASTM D3039 |
| Surface Aggregate | Silicon carbide (SiC) or aluminum oxide (Al2O3) | Bonded during cure |
| Panel Thickness | 6mm (1/4″), 9.5mm (3/8″), 12.7mm (1/2″) | +/-0.5mm tolerance |
| Nosing Overhang | 25mm – 38mm (1″ – 1.5″) | Customizable |
| UV Stabilization | Full-body pigmentation | ASTM G154 |
Physical & Mechanical Properties
| Property | Value | Test Method |
|---|---|---|
| Flexural Strength | 20,000 – 35,000 PSI (138-241 MPa) | ASTM D790 |
| Tensile Strength | 15,000 – 25,000 PSI (103-172 MPa) | ASTM D638 |
| Compressive Strength | 25,000 – 40,000 PSI (172-276 MPa) | ASTM D695 |
| Barcol Hardness | 50 – 60 | ASTM D2583 |
| Water Absorption | <0.5% by weight (24hr) | ASTM D570 |
| Coefficient of Friction – Dry | 0.90 – 1.20 | ASTM C1028 |
| Coefficient of Friction – Wet | 0.80 – 1.10 | ASTM D2047 |
| Impact Resistance | 5 lb ball drop from 5 ft | ASTM D2794 |
Load Capacity & Performance Ratings
- Distributed Load Rating: 300 PSF (1,465 kg/m2) minimum
- Point Load Capacity: 500 lbs (227 kg) on 1″ diameter area
- Fatigue Life: >10 million cycles at 200 PSF (ASTM D671)
- Operating Temperature Range: -40degF to 180degF (-40degC to 82degC)
- Thermal Expansion Coefficient: 1.5 x 10-5 in/in/degF
- Deflection Under Load: <L/240 span ratio
Slip Resistance Performance Data
Grit Classification & Applications
| Grit Type | Particle Size | Dry COF | Wet COF | Recommended Application |
|---|---|---|---|---|
| Fine (Standard) | 30-60 mesh | >=0.90 | >=0.80 | Office buildings, retail, light industrial, residential |
| Medium (Industrial) | 16-24 mesh | >=1.00 | >=0.90 | Manufacturing, warehouses, outdoor stairs, general industrial |
| Coarse (Heavy Duty) | 8-12 mesh | >=1.15 | >=1.05 | Oil & gas platforms, chemical plants, marine environments |
COF values are representative; verify compliance with applicable codes for your project.
Surface Aggregate Options:
- Silicon Carbide (SiC): Maximum hardness and wear resistance for extreme duty
- Aluminum Oxide (Al2O3): Excellent general-purpose slip resistance with cost efficiency
Chemical & Environmental Resistance
Chemical Compatibility Matrix
| Chemical/Environment | Standard Polyester | Vinyl Ester | Notes |
|---|---|---|---|
| Fresh/Salt Water | Excellent | Excellent | Long-term resistance in many immersion applications |
| Mild Acids (pH 3-6) | Excellent | Excellent | Citric, acetic, phosphoric acids |
| Mild Alkalis (pH 8-11) | Excellent | Excellent | Sodium hydroxide solutions <20% |
| Petroleum Products | Excellent | Excellent | Gasoline, diesel, hydraulic oil, lubricants |
| Alcohols/Solvents | Good | Excellent | Methanol, ethanol, acetone (short-term) |
| Strong Acids (pH <3) | Fair | Excellent | Sulfuric, hydrochloric, nitric acids |
| Strong Alkalis (pH >11) | Fair | Excellent | Caustic solutions >20% concentration |
| Chlorine/Bleach | Good | Excellent | Pool chemicals, water treatment |
| Oils & Greases | Excellent | Excellent | Mineral, synthetic, vegetable oils |
Environmental Durability Performance
| Exposure Type | Test Standard | Result |
|---|---|---|
| UV Resistance | ASTM G154 (5,000 hrs QUV-A) | No significant degradation in strength or color |
| Salt Spray | ASTM B117 (1,000 hrs) | No significant corrosion or delamination |
| Freeze-Thaw Cycling | ASTM C666 (300+ cycles) | No cracking or spalling |
| Moisture Resistance | ASTM D570 (24hr immersion) | <0.5% weight gain |
| Ozone Resistance | – | No effect (unaffected by ozone) |
Temperature Performance:
- Continuous operation: -40degF to 180degF (-40degC to 82degC)
- Retains flexibility at low temperatures
- Resists softening at elevated temperatures
- Suitable for a wide range of climates
Dimensional Specifications
Standard Stair Tread Dimensions
| Measurement | Standard Sizes | Custom Range | Tolerance |
|---|---|---|---|
| Tread Depth | 9″, 10″, 11″, 12″ (229-305mm) | 6″ – 18″ (152-457mm) | +/-3mm (+/-1/8″) |
| Tread Width | 24″, 30″, 36″, 42″, 48″ (610-1220mm) | Up to 72″ (1830mm) | +/-5mm (+/-3/16″) |
| Panel Thickness | 1/4″, 3/8″, 1/2″ (6-12.7mm) | Custom available | +/-0.5mm |
| Nosing Projection | 1″, 1.25″, 1.5″ (25-38mm) | Per IBC/OSHA requirements | +/-2mm |
| Nosing Radius | 1/8″ (3mm) standard | Custom profiles available | – |
Profile Configurations Available
1. Standard Stair Tread Profile
- Front nosing with safety yellow high-visibility stripe (2″ wide typical)
- Flat walking surface with bonded grit texture
- Optional rear upturn (10-15mm) for positive positioning
- Integrated drip edge prevents water infiltration
2. Landing Cover Profile
- Flat panel without nosing projection
- Full-surface slip-resistant coverage
- Available in 1/4″ or 3/8″ thickness
- Optional beveled edges for smooth transitions
3. Nosing-Only Profile
- 3″ – 6″ depth coverage (front edge only)
- Includes high-visibility stripe and slip-resistant grit
- For stairs where only front edge upgrade needed
- Bolt-on or adhesive mounting options
4. Custom Profiles
- Curved/radius treads for spiral staircases
- Integrated drainage channels
- Pre-drilled mounting holes to specification
- Special geometries for unique applications
Safety Standards & Code Compliance
Regulatory Certifications
? OSHA 1910.24 – Fixed Industrial Stairs (slip resistance, load capacity, dimensions)
? OSHA 1910.25 – Stairways and Ladders (riser/tread requirements)
? IBC 2021 Section 1011 – Stairway Construction (dimensional compliance)
? NFPA 101 Life Safety Code – Means of egress slip resistance requirements
? ADA Standards 2010 – Sections 302 & 303 (surface requirements, slip resistance)
? ANSI A117.1 – Accessible and Usable Buildings (texture requirements)
? ASTM F1637 – Safe Walking Surfaces practice standards
Fire Safety Performance
| Property | Rating | Test Method |
|---|---|---|
| Flame Spread Index | Class A: <=25 (Class C: <=200 standard) | ASTM E84 |
| Smoke Development | <=450 | ASTM E84 |
| Self-Extinguishing | Yes (fire-retardant formulations) | ASTM D635 |
| Burning Rate | <1.0 inch/min (FR grade) | ASTM D635 |
Marine Certifications Available:
- IMO FTPC Part 5 (Surface Flammability)
- IMO FTPC Part 2 (Smoke & Toxicity)
- USCG approval for marine vessels
Installation Requirements
Substrate Compatibility
| Substrate | Preparation Required | Surface Profile | Moisture Limit |
|---|---|---|---|
| Concrete | Clean, 28-day cured, tensile strength >250 PSI | CSP 1-3 (ICRI) | <4% by weight |
| Steel | Blast clean SSPC-SP6 or power tool SSPC-SP3 | 1-3 mil profile | Dry, rust-free |
| Wood | Structurally sound, no rot or loose boards | Smooth to lightly sanded | <12% moisture content |
| Existing Treads | Remove loose material, clean thoroughly | Mechanically roughened | <4% moisture |
Installation Methods & Specifications
Adhesive Installation
- Recommended Adhesive: Polyurethane construction adhesive or 2-part epoxy mastic
- Coverage Rate: 30-75 sq ft/gallon (varies by product type)
- Minimum Cure Time: 24-48 hours @ 70degF before full loading
- Installation Temperature: 40degF – 90degF (4degC – 32degC)
- Relative Humidity: <85% during application
Mechanical Fastening (Heavy Duty Applications)
- Fastener Type: #10 or #12 stainless steel screws (304/316 grade)
- Fastener Spacing: 12″-16″ on-center along rear edge
- Pre-drilling Required: Use bit diameter 1/32″ larger than fastener shank
- Torque Specification: 25-35 in-lbs
- Combined Method: Adhesive + mechanical fastening recommended for heavy traffic
Installation Tolerances:
- Expansion gap for wide installations (>48″): 1/8″ – 1/4″ between panels
- Edge sealant: Flexible polyurethane for exposed edges
- Surface must be level and properly sloped for drainage (outdoor applications)
Application Selection Guide
Duty Classification & Product Recommendations
| Application Type | Thickness | Grit Level | Resin Type | Fastening Method |
|---|---|---|---|---|
| Light Duty | 1/4″ (6mm) | Fine (30-60) | Polyester | Adhesive only |
| Office buildings, retail, residential | ||||
| Medium Duty | 3/8″ (9.5mm) | Medium (16-24) | Polyester/Vinyl ester | Adhesive + mechanical |
| Manufacturing, warehouses, outdoor | ||||
| Heavy Duty | 1/2″ (12.7mm) | Coarse (8-12) | Vinyl ester | Full mechanical + adhesive |
| Chemical plants, oil & gas, marine |
Environment-Specific Specifications
Industrial Manufacturing Facilities
- Recommended: Medium to coarse grit for oil/grease resistance
- Minimum thickness: 3/8″ for forklift traffic areas
- Fastening: Mechanical required for high-impact zones
Chemical Processing & Treatment Plants
- Recommended: Vinyl ester resin for acid/alkali resistance
- Grit: Heavy-duty (8-12 mesh) for maximum traction
- Fasteners: 316 stainless steel for corrosive environments
Marine & Offshore Applications
- Recommended: Vinyl ester resin with UV stabilization
- Grit: Coarse (8-12 mesh) for wet surface performance
- Hardware: 316 stainless steel fasteners, marine-grade adhesive
- Options: Anti-fouling surface treatment available
Commercial Buildings & Public Spaces
- Recommended: Fine to medium grit for pedestrian comfort
- Resin: Standard polyester adequate for indoor use
- Compliance: Yellow nosing for ADA visual contrast requirements
Outdoor & Exterior Applications
- Recommended: Medium grit for all-weather traction
- Fastening: Full mechanical fastening for thermal cycling
- Drainage: Minimum 2% slope required for water runoff
Product Variants & Series
Standard Product Lines
Commercial Series
- Material: Polyester resin with fiberglass reinforcement
- Grit: Fine or medium silicon carbide
- Colors: Gray/black surface with safety yellow nosing
- Thickness: 1/4″ standard
- Applications: Office, retail, light industrial
Industrial Series
- Material: Enhanced polyester or vinyl ester resin
- Grit: Medium or coarse silicon carbide
- Thickness: 3/8″ – 1/2″
- Features: Heavy-duty construction, pre-drilled for mechanical fastening
- Applications: Manufacturing, warehousing, outdoor
Chemical Resistant Series
- Material: Vinyl ester resin (high chemical resistance)
- Grit: Medium to coarse aluminum oxide or silicon carbide
- Color: Purple body for identification (optional)
- Certifications: Resistant to acids, alkalis, solvents per ASTM testing
- Applications: Chemical plants, laboratories, treatment facilities
Marine Grade Series
- Material: UV-stabilized vinyl ester resin
- Grit: Coarse silicon carbide for maximum wet traction
- Hardware: All 316 stainless steel included
- Certifications: IMO compliant, salt spray tested 1000+ hours
- Applications: Docks, marinas, offshore platforms, vessels
Fire-Rated Series
- Material: Fire-retardant polyester resin
- Fire Rating: ASTM E84 Class A (Flame Spread <=25)
- Smoke: Low smoke development (<450)
- Applications: Egress stairs, public buildings, high-rise structures
Complementary Products
Nosing-Only Strips
- Depth Options: 3″, 4″, 6″
- Installation: Bolt-on or adhesive
- Purpose: Retrofit front edge only on existing stairs
- Benefits: Lower cost than full tread replacement
Landing Panels
- Profile: Flat (no nosing projection)
- Sizes: Custom cut to platform dimensions
- Thickness: 1/4″ or 3/8″
- Purpose: Continuous slip resistance on landings/platforms
Riser Covers
- Material: Vertical FRP panels for stair faces
- Function: Protects risers and improves aesthetics
- Colors: Matches tread color scheme
- Installation: Bolts to existing risers
Transition Ramps
- Design: ADA-compliant slope configurations
- Surface: Matching slip-resistant texture
- Integration: Coordinates with stair tread system
Maintenance & Service Life
Recommended Maintenance Schedule
| Frequency | Procedure | Method |
|---|---|---|
| Weekly | Remove debris | Broom, leaf blower, or vacuum |
| Monthly | Surface cleaning | Pressure wash (<=3000 PSI) or stiff brush with water |
| Quarterly | Edge inspection | Visual check for lifting; re-secure if needed |
| Annually | Full inspection | Check fasteners, document condition |
| Bi-annually | Deep cleaning | Mild detergent solution, thorough rinse |
Cleaning Specifications
Approved Cleaning Agents:
- Water (hot or cold), pressure up to 3000 PSI
- Mild detergents (pH 6-8)
- Citrus-based degreasers (non-acidic)
Not Recommended:
- Wire brushes or abrasive tools
- Strong acids (pH <3) or alkalis (pH >11)
- Solvents (acetone, MEK, paint thinners)
- Grinding or sanding equipment
Service Life Data
Expected Service Life:
- Light Commercial/Residential: Long service life (application dependent)
- Medium Industrial: Long service life (application dependent)
- Heavy Industrial/Marine: Long service life (application dependent)
- Based on proper installation and routine maintenance
Typical Manufacturer Warranty:
- 5-10 years against material defects and workmanship
- Slip resistance warranted not to degrade >10% over warranty period
- Structural integrity warranty against cracking, delamination, or failure
- Exclusions: Improper installation, chemical exposure outside specifications, mechanical abuse
Product Quality Assurance
Manufacturing Quality Control
- Resin-to-Glass Ratio: 65:35 typical, verified by burn-off testing (ASTM D2584)
- Cure State: Minimum 95% cure verified by acetone rub test
- Surface Adhesion: Grit bond strength >300 PSI
- Dimensional Inspection: +/-1/8″ tolerance on all critical dimensions
- Surface Profile Verification: Grit density and distribution checked per batch
Testing & Certification
All products undergo rigorous testing to ensure compliance with:
- ASTM standards for mechanical properties
- Slip resistance verification (COF testing)
- Chemical resistance testing for specialized applications
- Fire safety testing for FR-rated products
- Load capacity and fatigue testing
FAQ
What is the grit surface rating of fiberglass stair tread covers?
Fiberglass stair tread covers feature mineral aggregate grit surface. COF values vary by grit type and test method; confirm values and OSHA 1910.22 compliance with project-specific testing.
What is the standard nosing configuration?
Standard 2-3 inch (50-75mm) high visibility yellow nosing with photoluminescent options. Nosing provides 1-2 inch (25-50mm) tread depth extension and 45deg bevel for optimal foot placement.
What panel sizes are available?
Standard sizes include 10″x30″, 12″x36″, 11″x48″ with custom cutting. Thickness 1/8″-1/4″ (3-6mm). Covers fit concrete, steel, wood, or metal pans from 9-12 inch tread widths.
How are fiberglass stair tread covers installed?
1. Clean substrate, 2. Apply adhesive or drill for mechanical fasteners, 3. Position cover with 1/16″ expansion gap, 4. Secure with stainless steel screws or epoxy adhesive per substrate type (concrete/metal/wood).
Are fiberglass stair treads corrosion resistant?
Yes. Resists acids, alkalis, salts, oils, and chemicals. Ideal for food processing, chemical plants, wastewater facilities, marinas, and offshore platforms where metal treads corrode.
Do fiberglass stair treads meet safety codes?
Yes. Complies with OSHA 1910.22 slip resistance, IBC stair requirements, ADA accessibility, and ASTM D635 fire standards. Class A fire rating available with phenolic resin formulation.
What is the service life of fiberglass stair treads?
Long service life in properly specified applications. UV-stabilized and resistant to rot, rust, warping, and delamination. Low-maintenance compared with painted metal or wood treads that may require periodic recoating.
Are fiberglass stair treads lightweight?
Yes. They are much lighter than steel tread covers for equal coverage area, reducing structural loading and simplifying retrofitting over existing concrete or metal staircases.
Technical Information Summary
This anti-slip fiberglass stair tread cover system provides a comprehensive safety solution for facilities requiring reliable slip resistance in demanding environments. The product combines proven composite material technology with engineered surface textures to deliver long-term performance with minimal maintenance requirements.
Core Product Attributes:
- High-performance FRP/GRP composite construction
- Integrally bonded slip-resistant surface designed to meet common safety standards
- Multiple thickness, grit, and resin options for application-specific requirements
- Standard and custom dimensional configurations
- designed to meet common OSHA, ADA, IBC, and NFPA requirements
- Durable in industrial, commercial, and marine environments
Material Benefits:
- High corrosion resistance compared with metal alternatives
- Excellent chemical compatibility for harsh environments
- UV stability for outdoor and exposed applications
- Wide operating temperature range (-40degF to 180degF)
- Low maintenance requirements over a long service life (application dependent)
Covers retrofit existing treads; for new builds see fiberglass stair tread systems.
Request a Quote for Anti-Slip Fiberglass Stair Tread Covers
Need anti-slip fiberglass stair tread covers for your project? Contact us for a quote and we will confirm specifications, lead time, and pricing.
