Open navigation

Sansin Dec (Specifically Formulated for Decking)

Next working day delivery available on products ordered before 11am.

Delivery options and pricing calculated at cart


Scroll to view more information on this product

TONE 946ml tin 3.78l tin 18.9l
Natural £37.29 £25.12 £23.50
Translucent £36.56 £24.41 £22.79
Saturated £41.59 £29.44 £27.81
Ultra Saturated £46.96 £34.80 £33.18

* Required Fields

(exc VAT) £0.00 (inc VAT) £0.00


Sansin Dec is a formulation of a high quantity of solids and stronger pigmentation so it looks better and lasts longer. Since even the toughest decks need to be maintained regularly, Sansin Dec makes it easy to keep your deck looking beautiful with just a simple clean and maintenance coat.

Whilst we hold stock of Sansin natural tones, all other finishes are made to order using our specialist mixing equipment therefore we can not offer standard delivery times on these products. Made to order finishes will be dispatched within 48 hours. As products are custom mixed to order our standard return policy will not apply.

At a glance

  • Colour Chart - click here to view colours

  • Specifically designed for decks
  • Penetrating environmentally-friendly 2-coat formula
  • Available in 80 colour tones inspired by nature
  • Protects against UV radiation
  • Enhances durability and moisture control
  • Environmentally friendly solution

Silva Recommended Colours
Have a look at our favourite colour tones on each deck species. Click here...

Wood finish specifically formulated for decking

Between the BBQ, the patio furniture and the family get-together, decks have to handle more traffic than any other wood around your house. That's why Sansin Dec is designed as a rugged two-coat formula that penetrates deeply, protecting your deck from within. Where film-build coatings can easily peel and scratch, exposing wood to the elements, Sansin Dec provides lasting protection from rain and UV exposure. 

During summer you want to be able to relax and enjoy the outdoors. For your peace of mind, Sansin Dec protects without using harsh or flammable solvents. Like all Sansin Enviro Stains, it is environmentally friendly; and by allowing wood to 'breathe' naturally, helps maintain a healthy moisture equilibrium that inhibits decay. 

Why Choose Sansin?

  • Sansin bonds directly with wood to forming a tough, durable barrier that won't crack, peel or blister.
  • Sansin lets wood 'breathe' more freely, dramatically improving dimensional stability and allowing wood to adjust naturally to moisture levels in the environment
  • Modified natural oils and resins are impregnated with special UV protectants so every exposed cell of your wood is protected
  • Natural protection against wood decay
  • Simple maintenance routine
  • Long lasting protection when compared to other available wood care products
  • 79 colour tones inspired by nature

Sansin Dec is a formulation with higher solids and stronger pigmentation so it looks better and lasts longer. But since even the toughest decks need to be maintained regularly, Sansin Dec makes it easy to keep your deck looking beautiful with just a simple cleaning and maintenance coat.

Sansin Dec is a penetrating environmentally-friendly 2-coat formula designed for wood decks.

Ideal for cedar, pine, spruce, fir, pressure treated timber and exotic hard woods, Sansin Dec is UV resistant, water-repellant, and non-flammable with easy soap and water clean-up.

The modified natural oils in Sansin Dec penetrate deep into wood under the kind of variable moisture content (up to 25%) frequently found in decks.

Although high in solids, Sansin Dec remains breathable and easy to maintain. Sansin Dec provides excellent UV and weather protection and will not crack, peel or blister. It’s the natural solution for maintaining the beauty and integrity of your wood.

Easy to Prepare

Just follow a few basic steps and Sansin will bond molecularly with your wood for years of durable protection. Prepare the surface by checking for defects and deterioration; remove existing coatings with Sansin Paint & Stain remover. For bare wood, use a minimum 3000psi pressure washer with just clean water. Sand surface if necessary. 

Easy to Apply

When you choose Sansin, you are giving your wood the attention and protection it deserves. Pick the Sansin formula that suits your wood surface and apply by dipping, spraying or brushing. Follow instructions on tin for best results. 

Easy to Maintain

Exposure to weather will lighten your finish over time. To have your home looking like new again, pressure-wash your wood with clean water or use Sansin Multi-Wash. Then re-apply Sansin Enviro Stain as per product directions. These simple steps will help Sansin give your wood the maximum protection for years to come. 

Read more


Learn how to get the perfect deck finish every time with Sansin Dec. We'll walk you through all the steps you need, including preparation and staining. You'll be surprised at how easy it is to make your deck look amazing.


  • Number of coats recommended: 2
  • Drying time (to touch at 20ºC): 4-6 hours
  • Time to re-coat (between applications at 20ºC): 6-8 hours
  • Usage: exterior timber, specifically formulated for decking and balconies but can also be used on cladding and fencing
  • Recommended application: for best results apply to timber with a sawn textured face or sand surface using an orbital sander and 60-80 grit sandpaper

Approximate Coverage

A 3.78 litre tin will cover 13.9-27.9 square metres for a single coat.

Coverage will vary depending on type of wood, age and surface structure.

Maintenance Cycle

3-6 years on vertical surfaces (cladding/fencing).

2-3 years on horizontal surfaces (decking).

How frequently maintenance coats are required will depend on the quality of prior preparation, quality of application and weather exposure levels.

Finishing & Protection

It is recommended that a finish is applied to all surfaces, including ends, before installation. The type of coating will be determined by the final finish and appearance desired.

Why factory coat?

  • Enhances the natural beauty of wood
  • Ensures a consistent finish
  • Applied in factory conditions
  • Long lasting protection against weathering
  • Simple maintenance routine
  • Reduces onsite labour costs

Prefer the silvery-grey look?

Sansin Wood Sealer provides outstanding moisture protection, keeping you wood in top condition. Over a short time, the wood will weather uniformly to a beautiful silver grey tone.

What is weathering?

There is a risk involved when leaving wood exposed to the elements. During the weathering process wood can appear unsightly as the material can blacken due to moisture getting into the fibres and pulling out tannins and extractives. Finish protects the wood from moisture absorption and UV degradation.

Sansin Enviro Stains - Naturally Perfect Wood Protection

For over 25 years Sansin have pioneered the use of environmentally friendly water-borne wood protection technologies that deliver outstanding performance. With a wide range of wood preparation and protection products, Sansin offer solutions for external and internal applications, designed to enhance the natural beauty of your wood.

Why choose Sansin?

  • Natural ingredients modified for enhanced performance
  • Bonds directly with wood rather than forming a film
  • Forms integral part of wood's cell structure
  • Safe for you and the environment
  • Low odour
  • Easy to apply and maintain
  • Long lasting performance

The best of both oil and water

Why choose between an oil or water based solution when you can have the benefits of both?

Sansin Enviro Stains combines the two, carrying natural oils and resins deep in the wood's cell structure using water.

As the water evaporates, Sansin bonds directly with the wood substrate, forming a tough, durable barrier that won't crack, peel or blister.

Wide range of choice

Sansin Enviro Stains let the natural personality of your wood shing through. With over 80 colour tones, you can be sure of finding the colour to suit your every project.

For inspiration, Sansin turned to the everyday miracles of the natural world.

And should you have a colour in mind that isn't available in our collection, our Precision Coat mixing service lets you bring it to life.   

News - Silva Timber becomes UK Distributor of Sansin Enviro Stains


Several companies can claim to be 'green' and friendly to the environment, but Sansin truly live and breathe their environmental practices, as important now as when Sansin first pioneered the Water based alkyd solution over 25 years ago. 

Natural by design

Sansin's technology is inspired by a thousand year old tradition that uses nature's own ingredients - resins and gums from the heartwood of trees - to deliver sustainable protection. 

Low VOC Content

New legislation about Volatile Organic Compound (VOC) content in coatings has forced a wide range of companies to change their formulas to fit within the 152 gram per litre regulations. Caring about the environment from the outset means Sansin's original forumulas are as low as 32 grams per litre, meaning it is as safe to use as it always has been. 

No harmful ingredients

Paraffin wax is often used in many water and solvent-based coatings to protect against moisture damage, however this surface layer can be easily eroded by exposure to UV radiation. In fact, just 5 hours of direct sunlight can reduce water repellency by over 60%* Sansin coatings use no paraffin an contain modified natural oils and resins, impregnated with special UV protectants - so every cell of your wood is protected. 

*Source - Water-based vs. Solvent-based formulations. Wood Science Faculty, U of T/Jan. '02

Focus on responsibility

Sansin strives to minimise waste and ensure responsible handling of waste products. A unique rinse water recycling system allows products of cleaning processes to capture and reuse raw materials otherwise waster. Regular facility improvements and operating initiatives such as the Sansin Second Nature programme focus on energy savings, waste reduction and recycling. 

Second nature

Wood is Sansin's passion and their commitment to protecting it and the environment is paramount. Sansin's vision is continually improve their products alongside their environmental practices, as part of Sansin's Second Nature programme. Sansin are pursuing initiatives such as using alternative green energy, smart car technology, and smart manufacturing processes, moving closer to the objective of operating a sustainable zero waste production facility.


  • FSC
  • PEFC
  • Trada member
  • Responsible purchaser
  • Cedar Shake & Shingle Bureau
  • Secured by