Under UK building regulations, a handrail is required on any deck or steps that are more than 600mm above the ground. For low-level decks, the balustrade must be at least 900mm high. For decks above 600mm, the minimum height at landings rises to 1,100mm. Even where it is not strictly required, a handrail adds safety and is worth fitting on any raised or stepped area.
Deck Handrails and Balustrade Rails for Garden Decking
A well-built handrail pulls the whole deck together. MacBlair stocks a range of decking handrails in both pressure-treated timber and composite finishes, giving a solid, finished look to raised decks, balustrades, and deck staircases alike. Timber handrails are planed to a comfortable grip profile and grooved to accept decking spindles, making it straightforward to build out a full balustrade system from a single product range.
UK building regulations require a handrail to be fitted on any deck or steps that exceed 600mm in height. For low-level residential decks, balustrades must reach a minimum of 900mm; high-level decks above 600mm need landings guarded to at least 1,100mm. Getting those heights right from the start saves a lot of rework. Pair the handrail with matching decking baserail and decking posts to complete a code-compliant perimeter frame.
Timber handrails in the range are pressure treated against rot and fungal decay, available in lengths suitable for spanning standard post spacings. The grooved channel accepts 42mm spindles top and bottom, and the same profile works as either a top handrail or a baserail, cutting down on the number of separate components to order. Key features include:
- Pressure-treated softwood construction, resistant to rot and insect attack
- Grooved rebate to locate spindles evenly without additional jigs
- Universal profile, usable as top or bottom rail
- Planed finish for comfortable grip and clean aesthetics
- Composite options available for low-maintenance colour consistency
Once the balustrade frame is in place, finish the deck boards with a quality decking stain to protect the timber and keep the whole structure looking sharp year after year. MacBlair supplies the full decking system, from boards to balustrade components, all available online with delivery across Northern Ireland.
Expansion Joint FAQ's
For steps and low-level areas, the top of the handrail should sit at least 900mm above the deck surface. On higher-level decks exceeding 600mm in height, the minimum at landing level is 1,100mm. When fitting a handrail to stairs, the rail should run between 34 and 38 inches (roughly 865mm to 965mm) above the pitch line of the steps.
Yes. Most timber decking handrails have a universal profile, meaning the same section works as both the top handrail and the bottom baserail. The grooved rebate in each rail locates the spindles consistently at both ends, so you only need to stock one profile rather than two separate components.
Standard decking handrails have a grooved rebate of 42mm wide, which accepts 42mm square spindles. When spacing spindles, a gap of no more than 100mm between each one is recommended to meet balustrade safety guidance. Cut a length of fillet into 100mm spacers to keep the spacing consistent along the full run.
Pressure-treated timber has built-in protection against rot and fungal decay, but the surface will still benefit from an annual application of decking stain or oil, particularly on cut ends and drilled fixing points where the treatment may have been broken. A good stain will repel moisture, slow UV greyeing, and keep the handrail looking fresh. Clean the timber down before applying any product and allow it to dry fully first.