Uc4 Green Square Fence Post - 1.8m - 100mm - Pack Of 5
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The B&Q Uc4 Green Square Fence Post is designed for homeowners and landscapers looking for a durable, long-lasting foundation for 4ft fence panels. By utilizing deep-penetration pressure treatment, these posts offer excellent resistance to ground contact decay, though users should ensure they are comfortable with manual post-setting as they require 2ft of burial depth for structural stability.
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| Brand | B&Q |
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FAQs
What is Uc4 treatment?
Uc4 is a British standard for timber treatment that signifies the wood is suitable for permanent contact with the ground and exposure to constant moisture.
Can I use these for fence panels taller than 4ft?
These posts are 1.8m in total length. If you use a taller panel, you will have less than 2ft to bury in the ground, which may compromise the fence's wind resistance.
Do I need to paint or seal these posts?
They are already pressure-treated, so they do not require additional sealing. However, you can apply a wood stain if you wish to change the color.
Are these posts heavy?
Due to their solid 10cm x 10cm construction and pressure treatment, they are substantial and provide significant weight for stability.
What is the best way to secure them in the ground?
Post-mix concrete is generally recommended for the most stable and long-lasting installation in soil.
Troubleshooting
Post feels unstable after installation.
Ensure that at least 2ft of the post is buried and that concrete or compacted aggregate has been firmly packed around the base.
Visible surface splits or checks.
Surface checking is common in square-cut timber as it reacts to humidity changes; this usually does not affect the structural integrity of a pressure-treated Uc4 post.
Pros and Cons
Pros
- High-pressure treatment maximizes durability against moisture and soil decay.
- Solid 10cm square profile offers excellent structural support.
- Incisions ensure uniform preservative depth.
- Compatible with a wide variety of standard fence panels.
Cons
- Requires manual labor to dig 2ft holes for secure installation.
- Natural timber may experience minor surface checking or color fading over time.
- Heavier than non-pressure treated alternatives.
Setup, Compatibility & Care
For proper setup, excavate a hole at least 60cm (2ft) deep. Position the post vertically using a spirit level to ensure a perfectly straight fence line. If cutting the post to size, always apply a high-quality timber preservative to the freshly cut end to maintain the Uc4 protection level. While the post is highly resistant to decay, periodic inspection for signs of ground-level moisture saturation is recommended. Avoid placing the posts in standing water, as consistent drainage significantly increases the wood's lifespan.