These Birkdale green treated post caps are stocked at Nottage Timber Merchants in Bridgend and are available with next-day delivery across South Wales. Browse our full range of fence posts to complete your fencing project in one order.
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$0.51The Story
Green treated post caps from Birkdale fit neatly over the top of timber fence posts, sealing the end grain against rain and frost to prevent splitting and rot. Available in two sizes to suit 75mm and 100mm posts, they are pressure treated for long-term outdoor use.
Specifications
| Property | Detail |
|---|---|
| Brand | Birkdale |
| Material | Timber |
| Treatment | Pressure treated green preservative |
| Finish | Green treated |
| Available Sizes | 96 x 96 x 23mm (for 75mm / 3" post), 120 x 120 x 26mm (for 100mm / 4" post) |
| Suitable For | Outdoor use, fence and gate posts |
What it's used for
- Capping the tops of standard timber fence posts to shed rainwater and reduce end-grain moisture uptake
- Protecting gate posts where exposure to standing water and weather is higher than on line posts
- Completing a neat, uniform finish along a new close-board or panel fence run
- Replacing damaged or missing caps on existing fence posts without the need to replace the post itself
Fitting and handling
Post caps should be fitted as soon as posts are erected to limit moisture ingress at the most vulnerable point of the post. Press or tap the cap firmly down over the post top so it sits flush, and secure with a suitable exterior-grade adhesive or a stainless steel nail through the side if required. Store caps flat and off the ground in a dry location until they are needed, keeping them away from prolonged direct contact with wet concrete or soil.
FAQ
Which size post cap do I need for a standard fence post?
The 96 x 96 x 23mm cap is designed for 75mm (3 inch) posts, and the 120 x 120 x 26mm cap fits 100mm (4 inch) posts. These are the two most common fence post sizes used in the UK, so one of these sizes will suit the vast majority of standard fencing projects.
Do green treated post caps need any additional treatment after fitting?
No additional treatment is required immediately after fitting. The pressure-applied green preservative provides protection suited to outdoor use. Over time, as with all treated timber, you can apply a compatible exterior timber preservative or stain to maintain appearance, though this is not essential for structural protection.
Can these post caps be used on gate posts as well as fence posts?
Yes. The caps are equally suitable for gate posts and fence posts. Gate posts are often subject to greater movement and impact, so it is worth ensuring the cap is secured firmly, using a small bead of exterior-grade adhesive around the underside edge before fitting if necessary.
These Birkdale green treated post caps are stocked at Nottage Timber Merchants in Bridgend and are available with next-day delivery across South Wales. Browse our full range of fence posts to complete your fencing project in one order.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
Green treated post caps from Birkdale fit neatly over the top of timber fence posts, sealing the end grain against rain and frost to prevent splitting and rot. Available in two sizes to suit 75mm and 100mm posts, they are pressure treated for long-term outdoor use.
Specifications
| Property | Detail |
|---|---|
| Brand | Birkdale |
| Material | Timber |
| Treatment | Pressure treated green preservative |
| Finish | Green treated |
| Available Sizes | 96 x 96 x 23mm (for 75mm / 3" post), 120 x 120 x 26mm (for 100mm / 4" post) |
| Suitable For | Outdoor use, fence and gate posts |
What it's used for
- Capping the tops of standard timber fence posts to shed rainwater and reduce end-grain moisture uptake
- Protecting gate posts where exposure to standing water and weather is higher than on line posts
- Completing a neat, uniform finish along a new close-board or panel fence run
- Replacing damaged or missing caps on existing fence posts without the need to replace the post itself
Fitting and handling
Post caps should be fitted as soon as posts are erected to limit moisture ingress at the most vulnerable point of the post. Press or tap the cap firmly down over the post top so it sits flush, and secure with a suitable exterior-grade adhesive or a stainless steel nail through the side if required. Store caps flat and off the ground in a dry location until they are needed, keeping them away from prolonged direct contact with wet concrete or soil.
FAQ
Which size post cap do I need for a standard fence post?
The 96 x 96 x 23mm cap is designed for 75mm (3 inch) posts, and the 120 x 120 x 26mm cap fits 100mm (4 inch) posts. These are the two most common fence post sizes used in the UK, so one of these sizes will suit the vast majority of standard fencing projects.
Do green treated post caps need any additional treatment after fitting?
No additional treatment is required immediately after fitting. The pressure-applied green preservative provides protection suited to outdoor use. Over time, as with all treated timber, you can apply a compatible exterior timber preservative or stain to maintain appearance, though this is not essential for structural protection.
Can these post caps be used on gate posts as well as fence posts?
Yes. The caps are equally suitable for gate posts and fence posts. Gate posts are often subject to greater movement and impact, so it is worth ensuring the cap is secured firmly, using a small bead of exterior-grade adhesive around the underside edge before fitting if necessary.
These Birkdale green treated post caps are stocked at Nottage Timber Merchants in Bridgend and are available with next-day delivery across South Wales. Browse our full range of fence posts to complete your fencing project in one order.

















