H4 Treated Pine Sleeper 200×50
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H4 Treated Pine Sleeper 200×50

Price range: $ 18.70 through $ 46.80
H4 Treated Pine Sleeper 200×50. Available in 2.4m and 6m length.
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PRODUCT DESCRIPTION

Built tough for Australian conditions, the H4 Treated Pine Sleeper 200x50mm is pressure-treated to Hazard Class H4 in accordance with Australian Standards, making it fully rated for direct in-ground and soil-contact applications. Crafted from plantation-grown Radiata Pine, it offers a reliable combination of strength, natural warmth, and long-term durability.

At 200mm wide and 50mm thick, this sleeper strikes the ideal balance between a manageable weight and solid structural performance — popular for DIY landscaping and trade projects alike. Whether you’re building a retaining wall, framing a raised garden bed, laying a garden edge, or setting a fence plinth, the 200×50 delivers the results without overcomplicating the job.

Rough-sawn timber finish gives a natural, rustic look that sits well in most outdoor settings, and can be stained, painted, or oiled to suit your design. With proper installation and periodic maintenance, H4 treated pine sleepers can last up to 20 years in outdoor conditions.

Available in:

  • 2.4m length
  • 6m length

Key Features:

  • H4 Hazard Class — rated for in-ground and soil-contact use
  • CCA pressure-treated from plantation Radiata Pine heartwood
  • Rough-sawn finish for a natural, rustic appearance
  • Easy to cut, drill, and work with on-site
  • Suitable for retaining walls, garden beds, edging, and fence plinths

Can be stained or oiled to extend lifespan and enhance aesthetics

What does H4 treatment mean for these sleepers?
H4 refers to the hazard class rating. It means the timber has been pressure-treated with a CCA (Copper Chrome Arsenate) preservative to a level that makes it suitable for direct in-ground contact — resisting termites, fungal decay, and moisture that would quickly degrade untreated or lower-rated timber. It is the minimum required rating for sleepers placed in soil.
Can I use 200×50 sleepers for a retaining wall?
Yes, the 200x50mm H4 sleeper is well suited to low retaining walls — typically up to 300mm in height — and is widely used for garden edging, driveway borders, and low garden terracing. For taller retaining walls or where significant soil pressure is involved, consider upgrading to the thicker 200x75mm profile, or consult a landscaper or structural engineer.
Are H4 treated pine sleepers safe to use around vegetable gardens?
Modern H4 treated pine sleepers are generally considered safe for use around garden beds. As a precautionary measure, if CCA-treated timber is used adjacent to soil where edible plants are grown, it is recommended to line the interior face with a plastic barrier sheet to prevent direct soil contact with the timber.

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