The 100 x 100mm Treated Timber Fence Post Cap is a heavy-duty, protective finishing accessory designed to shield the vulnerable end-grain of standard 3-inch square wooden posts from severe weather damage. Sized to fit 75mm x 75mm timber posts, this cap acts as a reliable physical barrier over the top of the upright support, preventing rainwater and moisture from settling directly into the exposed grain where rot typically begins.
 
Manufactured from high-grade structural softwood, this post cap undergoes a professional pressure-treatment process that forces chemical preservatives deep into the timber fibers. This rigorous treatment ensures the cap resists fungal decay, insect attack, and constant moisture exposure, significantly extending the lifespan of your structural fence posts. Its classic design sheds water cleanly away from the center of the post while providing a neat, uniform profile.
 
In addition to its vital protective qualities, this treated timber cap adds a smart, professional aesthetic to any garden boundary, tying the entire fencing run together seamlessly. Easily secured into position using exterior-grade nails or screws, this trade-quality cap is a simple, cost-effective addition that delivers long-term durability and a polished finish for your outdoor projects.