4 x 4 (100 x 100mm) Treated Timber
4 x 4 (100 x 100mm) Treated Timber - 1.8m 100x100mm Pointed is backordered and will ship as soon as it is back in stock.
High quality guaranteed
High quality guaranteed
Our products are made using high-quality materials and carefully selected manufacturing partners, with most items crafted by our skilled team in the Dublin Mountains.
Care information
Care information
We've gathered our top care tips so you can extend the life of your product and keep it looking fresh. Check out our care guide here.
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Lead times
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Size Chart


4 x 4 (100 x 100mm) Treated Timber - 1.8m 100x100mm Pointed is backordered and will ship as soon as it is back in stock.
Description
Description
4 inch timber posts or 100mm treated timber posts
4x4 inch timber or 100 x 100mm timber posts
4x4 timber, which refers to timber that is 4 inches by 4 inches in cross-sectional dimensions (width and thickness), is a versatile and commonly used building material. It is used for a wide range of construction, garden and woodworking projects. Here are some common uses for 100mm treated timber:
Our 4x4 timber posts have been pressure treated making them perfect for outdoor use, they are protected from rot and decay.
- Support Posts: One of the most common uses for 4x4 timber is as support posts in various garden projects. These posts are used for supporting decks, porches, fences, pergolas, and other structures.
- Fencing: 4x4 timber is often used as the main posts in fencing projects, providing stability and strength to the fence structure. 4 inch fence posts are the most commonly used support posts.
- Deck Framing: In deck construction, 4x4 timber can be used as vertical posts and horizontal beams to create a sturdy framework for the deck's structure.
- Pergolas and Arbours: 100mm timber posts are commonly used for constructing the main posts and beams in pergolas, arbours, and other outdoor garden structures.
- Garden Beds: 4x4 treated timber can be used to create raised garden beds, providing depth for planting and making it easier to control soil quality and drainage.
- Gate Posts: Use 4x4 timber as gate posts for garden gates, driveway gates, or other types of gates.
- Retaining Walls: It can be employed in the construction of retaining walls, especially for relatively low walls that are not bearing heavy loads.
- Landscaping: It can be used in various landscaping projects to create borders, steps, or decorative elements in gardens and outdoor spaces.
What length do I need for a fence support post?
First decide on the height of the fence you require. Example below for a 6ft (1.8m) high fence -
You'll need the wooden \ timber support post to be 2ft (.6m) longer then the height of the fence. This is to allow for the post to be fixed into the ground. The length of post required is 8ft (2.4m)
Double the life of your fence post by adding a Postsaver, click here to purchase
- Postsaver barrier sleeves comprise a tough polythene outer layer with a meltable bituminous lining.
- Postsaver fence post protection works by keeping preservatives in and decay out.
- Postsaver sleeves were developed 15 years ago and are fully proven and tested.
Lengths In Stock May Vary
