Decking

Decking transforms outdoor spaces into functional living areas, creating attractive platforms for entertaining, relaxing, or simply enjoying your garden. Whether you're building a raised terrace, a poolside surround, or a simple ground-level patio extension, quality deck boards and supporting framework deliver durability and visual appeal that enhances your property for years to come.

Our Outdoor Deck Board Range

McMahons stocks a comprehensive selection of materials to suit every project requirement and budget.

• Deck Boards: pressure-treated softwood boards (150x35mm, reversible) and Baltic Redwood options, alongside premium composite boards from Whiteriver and Millboard in multiple colours and profiles.
• Gripsure Anti-Slip Decking: treated timber boards with factory-fitted rubber inserts for 15-year guaranteed non-slip performance, ideal for poolside and all-weather use.
• Deck Posts & Rails: pressure-treated D-rail timbers, newel posts, spindles and balustrade systems to create safe, attractive perimeter frameworks.
• Decking Stains & Oils: penetrating oils and tinted stains to protect and enhance timber decking against UV and moisture damage.
• Millboard & Whiteriver Composite: premium low-maintenance boards available in multiple colourways including Smoked Oak, Anthracite, Soft Grey and Charcoal for long-lasting outdoor surfaces.

Complete your outdoor transformation by exploring our full Garden & Landscaping Supplies collection, including Fencing Supplies to define your boundaries.

Selecting the right boards depends on your priorities: timber suits those who appreciate natural aesthetics and don't mind periodic oiling, while composite suits busy households wanting minimal upkeep. Consider foot traffic levels, sun exposure, and proximity to water when making your choice.

Why Choose McMahons for Your Project?

With nearly two centuries serving Irish builders and homeowners, McMahons combines deep product knowledge with genuine value. Our team can advise on board spacing, joist centres, and fixing methods to ensure your outdoor platform performs beautifully through every season. Ready to start your build? Check our delivery service to get materials delivered direct to your site.

Frequently Asked Questions

1. Is composite decking better than timber decking?

Composite decking offers low maintenance, excellent durability, and long-lasting colour, while timber decking provides a natural look at a more affordable price. The best option depends on your budget and desired appearance.

2. Do I need planning permission to install decking?

Most decking installations do not require planning permission unless they exceed certain height limits or are part of a listed property. Always check local regulations.

3. How long does decking last?

Composite decking can last 25–30 years with minimal upkeep, while treated timber decking typically lasts 10–15 years with proper maintenance.

4. What maintenance does decking require?

Composite decking needs occasional cleaning with soapy water. Timber decking requires regular cleaning, sealing, and re-treatment to maintain appearance and durability.

5. Can decking be installed on uneven ground?

Yes. Adjustable supports, raised frames, and properly constructed substructures allow decking to be installed on sloped or uneven surfaces.

6. Is decking slippery when wet?

Composite decking often includes anti-slip textures, while timber decking may require anti-slip strips or treatments to improve grip in wet conditions.