Post cap 12x12

Why is protection essential for 12x12 cm posts?

A 12x12 cm (120x120 mm) post has a very large end-grain surface (the cut surface at the top). Without a cap, this surface acts like a giant sponge, drawing water deep into the wood with every rain shower.

As 12x12 cm posts usually serve load-bearing functions in carports or canopies, rot is particularly dangerous here and replacing them is extremely labour-intensive and expensive. Our 12x12 post cap is affordable insurance for your structure: it channels water away and ensures that the post remains dry from above.

Buying guide: Questions & answers about 120x120 mm caps

Here we clarify the most important details for your building project.

➔ Do the caps fit glued laminated timber (BSH) and KVH?

Yes. Solid structural timber (KVH) and glued laminated timber (BSH) are often used in the 120 x 120 mm size. Our caps are designed precisely for this and have an internal dimension of approx. 121 x 121 mm.

Important: Please measure your posts before ordering. Older, rough-sawn posts sometimes have different dimensions. Our caps fit perfectly on standard planed timber (12x12).

➔ Which material for carports & driveways?

As carport posts are often situated directly in the driveway and are clearly visible, appearance plays a major role. We offer three options:

• V2A stainless steel (The Exclusive): Particularly popular with modern homes. You can choose between a polished (glossy) finish or the matt, brushed version. Stainless steel is completely maintenance-free and does not rust.
• Anthracite RAL 7016 (The Architectural): Many modern carports are now painted grey or white, or feature an anthracite steel roof. Our powder-coated caps blend in seamlessly with these.
• Galvanised Steel (The Sturdy Option): If functional protection is the priority, or if you want the wood to weather naturally to a grey hue, the hot-dip galvanised cap is the most robust and cost-effective solution.

➔ Are sets worth it for this size?

Definitely. A freestanding single carport usually has 6 to 8 posts, whilst a double carport often has more. With our sets of 10 for 120x120 mm, you’ll have enough caps for the entire project and often some to spare for any fence connections – at a special price.

➔ Installation advice for large caps

Due to their large surface area, 120 caps should always be securely screwed in place. Each cap has two side drill holes. Use these for a permanent fix with stainless steel screws. Do not glue the cap down airtight, so that the solid timber underneath can breathe.