Decking

What is the difference between a grooved and a smooth profile?
Typically, castellated boards are a traditional choice in the UK, due to the aesthetic appeal of continuous and textured grooves.  Smooth boards create a more even, natural looking landscape; they also have several significant practical advantages when compared to grooved boards.  When specifying decking for areas with high levels of foot traffic with consideration for pushchairs, wheelchairs or bikes grooved decking boards can be too uneven, a smooth profile provides a more inclusive surface suitable for all users of the deck. CitiDeck is a smooth profile board with less abrasive inserts than our Marley Antislip Plus boards, resulting in a less bumpy ride. Smooth decking is frequently specified for outdoor areas where food is served or hygiene is of high priority, the profile prevents food, dirt or litter becoming trapped, making it much easier to clean. Dirt and leaf debris can also become trapped and is difficult to sweep out of grooved boards, smooth boards are easier to maintain.
What does PTV stand for?
PTV stands for Pendulum Test Value. The Pendulum test is the HSE’s preferred method of testing to assess the slip resistance of a surface. Testing is carried out in both wet and dry conditions.  The minimum PTV for low slip potential is 36. Our range of antislip decking comfortably exceeds the minimum scoring between 61 and 81 dependant on whether it is a wet or dry condition.
How slip resistant is your decking?
Marley's range of antislip decking has been independently tested by the Health & Safety Laboratory in Buxton and comfortably exceeds the minimum HSE requirements required for low slip potential, offering high resistance to slip. The average PTV scores achieved are between 61 and 81 depending if the surface is wet or dry.  The minimum requirement is 36.
How long will your decking last?
All of Marley's decking is preservative treated to Use Class 3 to achieve a 30 year service life. This treatment does not need reapplying so the timber can be left to weather naturally.
How do you cut your decking?
Due to the hard wearing and highly durable nature of our Antislip and CitiDeck resin/aggregate inserts, the following cutting procedure should be followed: At the required point mark a straight line, Use a 125mm angle grinder, with either a 3 or 5mm thick cutting disc (stone or steel both work equally the same) to cut through the resin/aggregate insert. Use a hand or mechanical timber saw to cut the remaining timber.  The cut ends should then be coated with cut end seal.  Link to download - how to cut antislip decking.
Do I need to use end coat?
This is essential to ensure that the treatment envelope is intact. All field cuts/holes made to the decking must be coated with an End Coat. We have this available in 1 litre tins. Where possible it is advisable to avoid cutting the decking onsite and we provide a precision end trimming service. Please contact us for additional information.
What lengths are available?
We supply standard lengths of 3.6, 4.2, 4.5 & 4.8. We also provide a precision end trimming service.
What fixings do I need?
When working with preserved timber it is important to use the correct type of fixings. To ensure optimum performance we would recommend 316 Grade Stainless Steel. Marley provide a range of fixings for our decking range.
How do I clean my decking?
All decks will benefit from regular brushing with a good stiff broom on a regular basis. Once a year we recommend you give your deck a thorough cleaning using a gentle pressure spray or a purpose made deck cleaning product which is formulated to remove grease and discolouration, this will remove surface algae which may make the deck more slippery. Please see our Deck Maintenance sheet.
Do I need to re-treat?
No. Our decking is vacuum pressure impregnated with preservative treatment to achieve Use Class 3 to a 30 year service life. This treatment does not need reapplying and the decking can be left to weather naturally over time.
Do you have any decking stockists?
We have a network of stockist around the UK. Please visit our We have a network of stockist around the UK. Please visit our Stockist Locator page for your nearest stockist. for your nearest stockist.