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Since 1994

Prevents Premature Post Failure.

Postsaver rot protectors guarantee your posts against ground-line rot and decay, the number one cause of post failure.

Postsaver rot protectors guarantee your posts against ground-line rot and decay, the number one cause of post failure.

Tested, Trusted & Proven

Since 1994

Post-Replacement Guarantee

20 or 40 Year Post Protection

Sustainable Product

Prolongs Life, Saves Trees
Tested, Trusted & Proven Since 1994
Post-Replacement Guarantee 20 or 40 Year Post Protection
Sustainable Product Prolongs Life, Saves Trees

Watch How Postsaver Works

Why Choose Postsaver?

At Postsaver, we’re an award-winning, family-run business who have specialised in protecting wooden fence posts from rot for over 30 years. Founded by brothers Richard and Jim, we’ve combined decades of plastics and coating expertise with independent testing to create our unique, proven rot protection products.

25 Years

Independent Test Data

30+

Countries Supplied To

10+ Million

Sold Worldwide
With over 10 million sold and a market-leading post-replacement guarantee, we’re proud to help homeowners, contractors, and landowners protect their posts, save money, and build sustainably.
Read Our Story
What Do Our Customers Say?
See Postsaver In Use
Stourbridge, UK
Penistone, UK
Ohio, USA
Dundee, Scotland
Castlewellan, Northern Ireland
Cairngorms, Scotland
Dundee, Scotland
Milton Keynes, UK

Total Protection Guarantee*

Backed by over 25 years of independent test data from the Building Research Establishment (BRE), Europe’s leading timber testing authority, we confidently guarantee the performance of Postsaver rot protectors.

If your protected post fails within the guarantee period, we’ll cover the cost of a replacement—giving you peace of mind and long-term protection you can trust.
View Test Data

Rot Protection Range

For Fence Posts

Regular Rot Protection

Post-Replacement Guarantee
Fits All Post Sizes
Product Length
35 cm
Guarantee
20 Years
Burial Depth
2 ft / 60cm
For Deck, Gate & Structural Posts

+PLUS rot Protection

Post-Replacement Guarantee
Fits All Post Sizes
Product Length
70 cm
Guarantee
40 Years
Burial Depth
3 ft / 90cm
Used, Supplied & Trusted By
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Frequently Asked Questions

Why do wooden posts rot?

Wooden posts decay in the ground primarily due to the presence of three factors, all of which are found within the top 6 inches or 15 cm of soil: oxygen, fungi, and moisture. When these elements coexist, it creates the perfect conditions for fungi to thrive and for the post to decompose.

How does Postsaver rot protection work?

Postsaver rot protectors create an air and watertight seal around the critical first 6 inches or 15 cm of the post below ground. This dual-layer seal system excludes all the factors required for decay, guaranteeing against ground rot.

What are Postsaver rot protectors made of?

Postsaver rot protection consists of a dual-layer system, this system comprises a tough polythene outer layer lined with a meltable bituminous inner sealant. Upon heating, the inner sealant melts while the outer layer shrinks onto the surface of the post, creating an air and watertight seal; locking out all the factors required for decay.

How do you know Postsaver rot protection works?

Our confidence comes from our zero failure, 25-year independent field test data conducted by the BRE, Europe's largest and leading timber test organisation. With millions of rot protectors sold to over 30 countries worldwide over the last 30 years, our product is proven in volume use, and our test data confirms this.

How does Postsaver’s post replacement guarantee work?

As long as the Postsaver rot protector is correctly applied to a post treated to Use Class 3 (UC3) or above, this will be covered by our 20- or 40-year guarantee, depending on the product purchased.

For the best possible protection, we recommend using Postsaver with a UC4-treated post, which provides the highest level of protection for in-ground applications.

In the unlikely event of a post failure due to rot, our guarantee covers the cost of a replacement post and rot protector.

We are a family-run business that believes in treating our customers fairly and honouring our guarantee on all valid claims.
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Postsaver manufactures and supplies guaranteed post rot protection that is proven to extend the life of wooden fence and gate posts. Our patented rot protection is independently tested and proven in volume use since 1994.
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*When applied to posts that meet the requirements of BS8417:2012 - UC4 (Use Class 4) or UC3 (Use Class 3). See guarantee for details
**Based on not having to replace your fence in 10 years time due to post failure.

Postsaver uses long term independent test data on the effectiveness of barrier sleeves and wraps to reach all the conclusions given on this website (test data available on request). Based on this data, Postsaver believes longer life, maintenance of strength over time, improved safety and reliability, extended inspection periods and reduced maintenance requirements are reasonable claims. This is subject to Postsaver products being correctly applied as per our instructions and used on correctly preservative-treated (use class 3 or higher – use class 4 recommended) wooden fence posts that are free of decay at the time of rot protection application. The claims made, real or implied are not warranties. It is the responsibility of the user to evaluate and satisfy themselves that the performance of the product meets their specific safety, reliability, extended inspection, repair and any other performance or cost-benefit criteria before using Postsaver rot protectors.
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