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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.
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.
Yes. All posts that have our rot protectors applied to them can be installed in all the usual ways - including installation with fence post concrete.
We make all of our rot protectors at our manufacturing facility in Yorkshire, United Kingdom.
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.
Our confidence comes from our zero failure, 20-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.
No, Postsaver is a much better option. Its dual-layer construction ensures superior protection. The inner bituminous coating is sealed to the wood, while the outer layer shields this seal throughout all seasons, even when the wood expands and contracts. Wooden posts naturally expand and contract with changing weather conditions. This movement can cause the wood to crack, breaking the seal of the bitumen paint and allowing oxygen, fungi, and moisture - the key factors for decay - to penetrate the post.
No. Postsaver rot protector's inner meltable liner is specially formulated to physically penetrate the surface of the wood rather than stick to the surface as flashband does. This results in a much tougher, long-lasting seal when using Postsaver.
Beyond 15 cm or 6 inches below ground there is not enough oxygen to support the decaying organisms and fungi. Coupled with temperatures below 10°C means that these decaying organisms are unable to survive and rot cannot occur.
No, due to Postsaver rot protectors creating an air and watertight seal to the post surface, it dramatically lowers the moisture entry point to the bottom of the protector meaning moisture can't track far enough to reach the critical first 6 inches or 15 cm below ground where there is enough oxygen for the decay-causing fungi to survive.
No, the wind and the sun will dry the post before the moisture enters the ground-line section of the post. This combined with Postsaver's air and watertight seal, excluding the other factors required for decay, means that rot cannot occur.
Watch our moisture test video to see how effective Postsaver is at protecting the post.
As long as the Postsaver rot protector is correctly applied to a use class four post (UC4), then we automatically guarantee the post for 20 or 40 years, depending on the product purchased. In the event of a failure, our guarantee covers the cost of a replacement post and rot protector.
We are a family-run business that believes in treating customers fairly and honouring our guarantee in all valid claims.
Yes, our guarantee is valid only when Postsaver is applied to UC4 (Use-Class 4) preservative-treated posts. Postsaver's dual-layer air and watertight seal not only locks moisture, fungi and oxygen out but also locks preservatives in.
It is clear when the rot protector has been applied correctly as the product will effectively shrink to the most and, on rolling, will create two black bands, one above and one below the rot protector.
Please see our application video for a perfect step-by-step application.
The material used to create the outer film liner has been used as an in-ground barrier film in damp proofing and landfill liners for over 60 years without problems. The projected lifespan of the outer layer of the rot protector in the worst ground conditions is over 200 years, and bituminous sealants have been used to protect wood from decay for over 2000 years.
A regular rot protector is 14 inches in length.
A +PLUS rot protector is 28 inches in length.
On an independent test in which wooden blocks were encapsulated with rot protector material, termite attack did not occur.
In some countries with certain termite species, we have been told it is sufficient to only apply a rot protector to the ground-line section of the post as the termites generally live in the upper part of the ground. If they cannot detect wood, they will not burrow down to attack the wood deeper in the ground. In other countries, the whole of the in-ground section of the post has to be encapsulated.
Yes, rot protected posts can be power-driven into the ground using a post basher or tractor operated fence post driver.
No, but they can be applied to posts that are slightly damp to the touch. If in any doubt, flash dry posts with a blowtorch before application.
We supply rot protectors to fit all sizes of posts. If you would like some guidance on which size product to purchase, you may find our Quick Buy Calculator useful below
All you need is a gas blowtorch or 2 KW+ hot air gun and, if applying rot protectors to a square post, a foam roller.
It typically takes 40 seconds per post for a gas blowtorch and 2-3 minutes using a hot air gun depending on the size of the rot protector and post used.
If applying more than one rot protector, we advise a generous overlap of at least 1 inch. It is worth noting however that we have developed a Postsaver +PLUS product which is a double-length, double-life option, which may meet your requirements
Typically $0.03 per rot protector.
Postsaver is suitable for use on all timber. Postsaver however only offers a 20 or 40 year post replacement guarantee, depending on the product used, when applied to UC4 treated posts. Postsaver can be used on untreated wood but will only extend its service life by 10 years.
Learn more about Use Class 3 & 4 posts in this infographic from the AWPA
The storage temperature range is 32°F to 104°F. Due to their meltable inner liner, rot protectors must not be stored in direct sunlight, and it is recommended to fit them in the shade, at least out of direct sunlight.
Postsaver is an ISO 9001 certified manufacturer. All rot protectors are rigorously checked against a set of tight quality standards including size, weight, film thickness, softening point, shrink ratios and print quality.
No. The rot protectors are environmentally friendly and non-toxic therefore do not require any approvals, certification or import licences for use.
Yes, Postsaver rot protection is patented.
Pro-set is a lightweight yet very strong expanding resin foam that can be used to fix fence posts into the ground.
Yes. For a guaranteed fence post, we recommend using Pro-Set with Postsaver rot protectors.
You can use Pro-Set with wooden, PVC, steel and composites posts.
Pro-Set is just 3 lbs per pack. One pack is capable of fixing two posts in the ground.
Pro-Set is a high-density resin foam that expands in the hole around the post, forcing itself into all voids in the soil to create a robust post-fixing solution.
If Pro-Set grows over the ground level, let it cure and then cut off the excess resin with a knife or sharp tool. Pro-Set is sensitive to UV rays and will degrade if exposed to sunlight, therefore ensure that footings are well covered with soil to protect it.
You can also place earth or soil on top of the foam as it is expanding, just before it reaches ground level. The weight of the soil is usually enough to stop it expanding any further and prevents the need to cut the foam once it's cured.
Pro-Set is quick and easy to use and only takes 3-5 minutes to full expand. Once expanded, this is the ideal time to trim off any excess and cover with soil. The product reaches full strength in just 90 minutes.
No. Pro-Set is a ready mixed solution and requires no water.
The product is more efficient when installed using a fencing spade or auger. In this case, one pack of Pro-Set will be enough to fix two posts into the ground with a two-foot burial depth.
If using a regular spade, one pack of Pro-Set will fit one post.
No. Pro-Set can be used in wet soil, but not if there is standing water. Remove the water or cover with soil, sand or substrate prior to use.
Once Pro-Set has hardened it becomes waterproof and will not be affected by water.
Pro-Set is strong, strong enough for most fencing jobs; it's only limitation is that it can't be used with concrete posts.
Producing one pack of Pro-Set produces approximately 6.6 lbs of CO₂.
In comparison, concrete post-mix produces approximately 17.6 lbs of CO₂ for two bags – the equivalent post-fixing capacity to Pro-Set.
When looking at the CO₂ transport costs on the environment, Pro-Set is far more environmentally friendly due to it weighing 97% less than concrete.
Pro-Set is a chemical compound, and as with most chemical products, its efficiency depends on temperature. It affects the speed as well as the volume of the final footing:
No matter the outside temperature, 2 hours before using Pro-Set, it should be stored at room temperature [between 68 and 77 °F] to achieve the best results.
Yes. Pro-Set is not sensitive to particularly acidic or alkaline soils.
After Pro-Set has hardened it is nonreactive. No contamination takes place and it is neutral to the environment and safe to living organisms.
Pro-Set is designed to last at least 50 years in service.
