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Product Reviews
By Charles Fry

Excellent product,wood sealer easy to apply. Dries quickly allowing the second coat to be applied within the recommended time. it did alter (darken) the colour of the wood but it does look s mart

By Anthony Boyd

Smartsealer wood sealer easy to apply .

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Wood Sealer - 10yr Protection

Easy to Apply.Clear Finish - STOPS ROTTING Highly Protective sheds, fences, garden furniture and decking.

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Product Description

Once applied, Smartseal wood sealer creates an invisible waterproof barrier that will help prevent the ingress of moisture on ingress on pressure treated softwoods such as fences, sheds, garden furniture and decking. The wood waterproofer is specially formulated to protect your outdoor wooden surfaces for up to 10 years. The water-resistant surface will also inhibit the growth and spread of mould and algae which is a big problem with softwoods, especially in shaded north-facing areas of locations with high levels of rainfall. 

  • 10 year Protection
  • Wood Waterproofer 
  • Average coverage ratio: 3 - 5m per litre
  • External Use
  • Inhibits the Spread of Moss & Algae
  • Easy to Apply
  • Sprayable Formula
  • Clear Invisible Finish
  • Use on Sheds, Decking, Garden Furniture & Fencing
  • Cannot be painted over or used on top of paint, as they will prevent one another from adhering to the wood. 

To ensure the best results and prior to application, all wooden surfaces being treated should be thoroughly cleaned first.

  • Works on softwoods and hardwood.
  • Easy application by brush, sprayer or roller. Two coats are recommended.
  • Inhibits the growth of mould & algae.
  • Helps to prevent warping.
  • Invisible once dry and will not change the appearance of the wood.
  • 10+ years weatherproofing protection.
  • User friendly non-biocidal formulation.
  • Wood remains 'breathable' after application.

Directions for Use:


Apply only to dry surfaces above 8C with a surface temperature no higher than 23C and no rain forecast for at least 4 hours.

Apply 2 coats by sprayer, roller or brush with application of second coat within 4 hours.

Wear appropriate safety wear. 

Product FAQs

Q: Hi, can I use an air spray gun with your wood sealer


A: Any pump sprayer can be used to apply the wood sealer.

Response from Nick

Q: Does it have UV protection or will my larch turn grey even after using?

Kevin Newton

A: The wood sealer is UV resistant. Samples are available for testing the effect they have on the relevant surface. Hope that helps.

Response from Alex

Q: Can this product be used on previously treated (but not painted) oak window frames?

Albert Mariner

A: We would suggest try a sample of the wood sealer 1st to ensure it can soak in and adhere to the previously treated frames. The previous treatment might create a barrier leading to the sealer being in-effective.

Response from Alex
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We provide a national delivery service for our block paving sealer, pattern imprinted concrete sealer, roof coatings and tarmac restorer on a standard 2 - 4 working day basis. Dependent on weight, this is normally done by pallet or parcel carrier.

If you need products delivered quicker, for a small additional charge, orders placed before 1.30pm can be delivered within 1 - 2 working days to most parts of the UK, although this is dependent on the courier service in your area and the product/s ordered. If you require this service, please check on area availability by calling 01268 722500.

Our commitment is to supply all orders as placed and we offer a comprehensive guarantee of quality. Providing a reliable delivery service to all our customers is most important to us and this is backed up by the many satisfied customer testimonials we have received over the years.

If you need an order delivered to a different address, left somewhere at your property without a signature or left with a neighbour, just let us know.

We also try to maintain 100% stocking levels of our products at all times, so an immediate despatch is virtually guaranteed.

Our product returns policy can be viewed by visiting our Terms and Conditions section.

*Free delivery on orders over £75 are subject to the delivery address location.

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