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You are here: Home1 / News2 / Product News3 / How to stop decking rotting

How to stop decking rotting

When investing in new timber decking, it is important to find out how to stop decking from rotting. When outdoor decking is not installed with longevity in mind, deck frame rot can be a common problem, in fact some poor quality frames can disintegrate completely after just 5 – 10 years.

Unfortunately for those with this problem, it can be expensive to fix as the only solution is to completely replace the deck. However if you are considering installing or are in the process of having a new deck installed, there are measures you can take to stop decking from rotting and preserve it.

The most common way to preserve timber decking is to treat it with a good quality outdoor wood preserver. This will need to be reapplied after a period of time but stops your decking from the battering of bad weather.

Taking this one step further, we are recommending that to preserve decking, you cover your decking frame with deck tape. Deck tape is a new and easy solution to protect your decking from rot even further. We are now stocking Walther Strong deck tape to help you do this yourself at home.

How to apply decking tape

You can put quality deck tape on new and existing timber deck frames – it fully protects both, giving a waterproof and weathertight seal.

Quality decking tape has these benefits:

  • It’s easy to tear and won’t get stuck to itself
  • You don’t need gloves to apply it
  • The tape adhesive is strong – it’ll last for 50 years
  • It self-seals around fasteners (no annoying fiddly bits)
  • Long-term exposure to sunshine won’t damage it
  • It works on damp timber and below freezing (so you can apply it any time)

Applying deck tape will help your frame last longer. This means that you spend less on maintenance and repairs and you can enjoy your garden decking for longer.

This video has technical information and tips to help you apply it:

Order deck tape with free delivery

It’s easy to buy our Walter Strong deck tape and preserve your decking. Simply pop into our fencing and landscape supplies shop in Chichester or buy it from our online shop.

Remember, if you buy it from the Knight Fencing online shop, you can get it delivered locally for free. No delivery charges – just straight to your door for free.

Walther Strong deck tape comes in 20 metres rolls and is available in 3 widths: 50mm, 82mm and 100mm.

Buy your deck tape today

More Decking Guides?

Read our guide to how to stop weeds coming through decking

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Michael P.
Knight installed new fencing for my rear garden. Looks great and I am very pleased with their service.
Lucy D.
We recently bought the Hutton Six Seater Round Picnic Table from Knight Fencing and are really pleased with it. It's sturdy, good-looking, and feels like it's built to last. Assembling it took about an hour, but the instructions were super easy to follow.

We had one small hiccup - we cross-threaded a bolt by mistake. But, it wasn't a problem as they'd included some spare parts in the pack, so we sorted it out quickly.

If you're near Sidlesham, do swing by their display area. It's full of tough garden furniture, different types of fences and gates - worth a look. Plus, if you're in the PO postcode area, delivery is free.

All in all, I can definitely recommend Knight Fencing and their Hutton picnic table. It's a good buy and they're excellent to deal with :)
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Can’t praise Knights highly enough for their first class response to our problem . Rang early morning with problems with our driveway gates they were here within three hours . Thank you knights
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Very professional at all stages, from site visit, to quote, to installation. We were consulted is throughout and got the finish that we wanted. Thank you.
Malcolm B.
In June 2025 excellent fitters Kevin and George from Knight installed these well made Iroko double gates.
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Just had my back garden fence replaced by 2 of the guys and I am so please it with it amazing job .
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New garden gate, super service and lovely quality, am delighted with the result and many thanks to the team for their work, it looks great, thank you!
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I am very pleased with my hit and miss fence and my new handrails, work was completed in the promised time, everything was left clear and tidy, all by very friendly, helpful and professional experts. Recommended.

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Trusted, Accredited, and Committed to Excellence

Association of Fencing-Industries
DuraPost Trained Installer
SMAS Worksafe preferred supplier
Postsaver Approved Installer
AJS Training
Constructionline Gold Member
CLD approved installer
Checkatrade.com members
CHAS accreditation advanced
Alexandra recommened installer

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News, Tips and Advice

  • Knight Fencing Delivers Hands-On Workshop at West Sussex Alternative Provision CentreJune 23, 2025 - 1:00 pm
  • Photo of Timber closeboard fencing and armco barrier installed by Knight Fencing at Salisbury Railway Station
    Salisbury Train Station Car Park – Commercial Fencing ProjectMay 1, 2025 - 3:12 pm
  • Liam & Lewis with their Fencing apprenticeship level 2 pass certificates
    Knight Fencing students shine on new fencing apprenticeship schemeFebruary 26, 2025 - 12:46 pm
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