Timber Species Guide for Anti-Slip Decking
Compare popular softwood, hardwood and modified timber species used for anti-slip decking, non-slip decking boards, boardwalks, bridges, marinas, visitor attractions and garden projects.
Choosing the Right Timber Species for Decking
Choosing the right timber species is an important part of any decking project. The best option will depend on budget, appearance, durability, availability, movement, maintenance requirements and the environment where the decking will be installed.
GripDeck® can manufacture anti-slip decking and slip-resistant timber boards using a range of suitable softwood, hardwood and thermally modified timber species. Our team can help advise on board size, timber type, anti-slip insert layout and suitability for your project.
Best Timber for Anti-Slip Decking
For most cost-effective anti-slip decking projects, treated European Redwood softwood is a popular and practical choice. For premium commercial, hospitality, marina, pier and public access projects, hardwood species such as Balau, Iroko, Cumaru, Ipe, Opepe and Ekki may be considered. ThermoDeck® offers a thermally modified timber option where stability, appearance and a modern finish are important.
The best timber for decking is not always the most expensive species. The right choice depends on the location, expected foot traffic, exposure, budget, maintenance expectations, sustainability requirements and whether factory-applied anti-slip inserts are required.
Softwood vs Hardwood Decking
| Feature | Softwood Decking | Hardwood Decking |
|---|---|---|
| Cost | Usually lower initial cost | Usually higher initial cost |
| Appearance | Traditional treated timber appearance | Premium hardwood finish |
| Durability | Good when correctly treated and maintained | Often excellent, depending on species |
| Weight | Lighter and easier to handle | Heavier and denser |
| Typical Uses | Gardens, schools, walkways and general projects | Commercial projects, hotels, marinas, piers and premium schemes |
Softwood, Hardwood or Thermally Modified Decking?
Softwood decking is often chosen for value and availability. Hardwood decking is often chosen for premium appearance, density and durability. Thermally modified decking, such as ThermoDeck®, can offer improved stability and a warm contemporary appearance for garden decking, terraces and design-led projects.
| Timber Type | Best For | Examples |
|---|---|---|
| Softwood decking | Cost-effective garden decking, schools, walkways and general access projects | European Redwood, Larch |
| Hardwood decking | Premium decking, hotels, piers, marinas, public access and long-life projects | Balau, Iroko, Ipe, Cumaru, Opepe, Ekki, Oak |
| Thermally modified decking | Stable modern timber decking for gardens, terraces and architectural projects | ThermoDeck® |
Timber Species for Anti-Slip Decking
European Redwood
European Redwood is one of the most popular softwood decking timbers in the UK and is widely used for cost-effective anti-slip decking. It offers good value, wide availability and is suitable for many domestic, commercial and public access projects when correctly treated.
Typical uses: garden decking, schools, walkways, public areas and cost-effective anti-slip decking projects.
View Softwood Decking
Balau
Balau, often supplied as Yellow Balau, is a dense tropical hardwood with a rich appearance and strong durability. It is often used for premium decking projects where appearance and long-term performance are important.
Typical uses: hotels, terraces, commercial decking, leisure projects and public access areas.
View Balau Case Study
Cumaru
Cumaru is a very durable South American hardwood with excellent strength and weather resistance. It is suitable for high-quality decking projects where a dense hardwood is required.
Typical uses: commercial decking, public access areas, terraces and premium garden projects.
View Hardwood Decking
Ekki
Ekki is an extremely dense and durable hardwood often used in heavy-duty applications. It is commonly associated with marine, bridge and structural projects where strength is essential.
Typical uses: bridges, marine structures, piers, heavy-duty walkways and public infrastructure.
View Hardwood Decking
Garapa
Garapa is a lighter-coloured hardwood with a warm golden appearance. It can be a good option where a lighter hardwood finish is preferred.
Typical uses: terraces, gardens, commercial decking and attractive outdoor seating areas.
View Hardwood Decking
Ipe
Ipe is a premium hardwood known for exceptional durability, density and longevity. It is often specified for high-end projects where long service life and a premium finish are required.
Typical uses: luxury terraces, commercial schemes, boardwalks, premium garden decking and public access projects.
View Hardwood Decking
Iroko
Iroko is a durable African hardwood with a warm colour, good stability and a strong track record in external timber decking projects. It is often used for commercial decking, public access projects and premium outdoor applications.
Typical uses: promenades, public walkways, terraces, commercial decking and high-quality external projects.
View Hardwood Decking
Jatoba
Jatoba is a hardwearing hardwood with a distinctive reddish-brown colour. It is suitable for projects where strength, durability and a richer timber appearance are desired.
Typical uses: commercial terraces, premium garden decking, walkways and leisure environments.
View Hardwood Decking
Larch
Larch is a naturally durable softwood often used for outdoor structures, boardwalks and rustic decking projects. It offers a more natural appearance than pressure treated softwood.
Typical uses: boardwalks, nature trails, garden decking, rural projects and visitor routes.
View Softwood Decking
Massaranduba
Massaranduba is an extremely dense hardwood with a rich red-brown appearance. It can be very durable, but its density and naturally polished surface can make resin bonding more challenging.
Typical uses: specialist hardwood decking projects where suitability has been reviewed.
Discuss Suitability
Opepe
Opepe is a durable hardwood often associated with marine, external works and heavy-duty applications. It is commonly used where durability and outdoor performance are required.
Typical uses: jetties, piers, bridges, waterside environments and heavy-duty decking projects.
View Pier Case Study
Oak
Oak is a traditional hardwood with strong character and a distinctive appearance. It can be suitable for some heritage and landscape projects, but green or fresh sawn oak can move significantly as it dries.
Typical uses: heritage settings, traditional landscapes and carefully specified external projects.
Discuss Oak Decking
ThermoDeck®
ThermoDeck® is a thermally modified timber decking option with a warm appearance and improved stability compared with many standard softwoods. It can be supplied with GripDeck® anti-slip inserts for suitable projects.
Typical uses: modern gardens, terraces, balconies, premium domestic projects and design-led timber decking schemes.
View ThermoDeck®Important Timber Suitability Notes for Anti-Slip Inserts
Green or Fresh Sawn Oak
Green or fresh sawn oak can shrink, twist, check and move significantly as it dries. This movement may place excessive stress on anti-slip inserts and should be considered carefully during specification.
Massaranduba
Massaranduba is extremely dense and can have a naturally smooth, polished surface. This can make achieving reliable long-term resin bonding more difficult, so project suitability should be discussed before specification.
Project-Specific Advice
Some timber species require additional checks before anti-slip inserts are applied. GripDeck® can advise on suitable species, moisture condition, profile and insert layout.
Timber Species Comparison
| Species | Type | Appearance | Typical Use |
|---|---|---|---|
| European Redwood | Softwood | Traditional treated timber | Gardens, schools, walkways and general decking |
| Larch | Softwood | Natural rustic appearance | Boardwalks, nature trails and rural projects |
| Oak | Hardwood | Traditional character timber | Heritage and traditional projects |
| Balau | Hardwood | Rich hardwood finish | Hotels, terraces and commercial decking |
| Iroko | Hardwood | Warm premium finish | Promenades, walkways and commercial projects |
| Ipe | Hardwood | Premium dark hardwood | High-end projects and long-service-life decking |
| Ekki | Hardwood | Heavy-duty appearance | Marine, bridges and heavy-duty structures |
| Opepe | Hardwood | Durable external hardwood | Piers, jetties and waterside applications |
GripDeck® Anti-Slip Decking Options by Timber Type
Softwood Anti-Slip Decking
Cost-effective anti-slip and non-slip timber decking using treated European Redwood softwood.
View Softwood
Hardwood Anti-Slip Decking
Premium hardwood decking with factory-applied anti-slip inserts for Balau, Iroko, Cumaru, Oak and other suitable species.
View HardwoodThermoDeck®
Thermally modified timber decking with anti-slip inserts for a stable, attractive finish.
View ThermoDeck®Choosing Timber Species by Project Type
| Project Type | Common Timber Options | Recommended Link |
|---|---|---|
| Garden decking | European Redwood, Larch, ThermoDeck® | Garden Decking Ideas |
| Hotels and leisure areas | Balau, Iroko, Hardwood, ThermoDeck® | Travelodge Case Study |
| Bridges and boardwalks | European Redwood, Larch, Opepe, Ekki | Footbridge Case Study |
| Piers and waterside projects | Opepe, Ekki, Iroko, Balau | Shotley Pier |
| Heritage projects | Accoya®, Oak, hardwood or traditional timber | Grimes Graves |
FSC® Timber and Sustainable Specification
GripDeck® can supply FSC® certified timber where available and specified. Availability depends on the timber species, board size, profile, quantity and current supply chain. If FSC® or another sustainability requirement is important for your project, please tell us at quotation stage.
Need Help Choosing a Timber Species?
Speak to GripDeck® about timber species, board profile, anti-slip inserts, samples, board movement, durability and project suitability.
Request a Quote Request SamplesUseful Timber & Decking Resources
Slippery Decking Guide
Learn why decking becomes slippery and how to choose anti-slip decking.
Read GuideFrequently Asked Questions
What is the best timber for decking?
The best timber depends on the project. European Redwood is cost-effective, hardwoods such as Balau, Iroko and Ipe provide a premium finish, and ThermoDeck® offers a stable modified timber option.
What is the best hardwood for decking?
Popular hardwood decking species include Balau, Iroko, Ipe, Cumaru and Opepe. The best choice depends on appearance, durability, budget, availability and application.
Can anti-slip inserts be added to any timber?
Anti-slip inserts can be applied to many suitable timber species, but some species require additional checks. Very dense timbers or timbers with high movement may not be suitable in all situations.
Is oak suitable for anti-slip decking?
Oak can be used in some external projects, but green or fresh sawn oak can move significantly as it dries. This movement may affect anti-slip insert performance and should be discussed before specification.
Can GripDeck® help choose a timber species?
Yes. GripDeck® can advise on timber species, board sizes, insert layouts, samples and product suitability for your project.
What is the best softwood for decking?
European Redwood is one of the most commonly used softwood decking species in the UK because it is cost-effective, widely available and suitable for many treated anti-slip decking projects.
Is hardwood decking better than softwood decking?
Hardwood decking is usually denser, heavier and more premium in appearance, while softwood decking is often more cost-effective and easier to source. The best choice depends on the project, budget and environment.
What timber is best for boardwalks and bridges?
Softwood may be suitable for many public access routes, while species such as Opepe, Ekki, Iroko and other hardwoods may be considered for more demanding bridge, boardwalk, pier or marine projects.
Is ThermoDeck® a hardwood or softwood?
ThermoDeck® is thermally modified timber, not a tropical hardwood. It is chosen for its warm appearance, stability and suitability for selected anti-slip decking projects.