Guardrail posts and spacer blocks
Timber guardrail posts and spacer blocks for road-safety barriers and civil projects, supplied to match your project specification.
- Civil contractors
- Posts
- 1.8 m, 150 mm and 180 mm
- Spacer blocks
- 360 mm, five sizes
- Sizes listed
- 7
- Priced from
- R25.90 incl. VAT
- Collection
- Blackheath depot
Sizes and prices
Prices include VAT, with the ex-VAT price underneath. Add every size you need to your quote list, then send one request. We confirm availability, lead time and delivery before supply.
7 options shown. Please confirm availability.
| Product / specification | SKU | Price | Action |
|---|---|---|---|
| Guardrail Posts and Spacer Blocks - Guardrails 1.8m x 150mmGuardrails 1.8m x 150mm. | Guar18150 | R344,59 incl. VATR299,64 excl. VAT | Add to quote |
| Guardrail Posts and Spacer Blocks - Guardrails 1.8m x 180mmGuardrails 1.8m x 180mm. | Guar18180 | R478,08 incl. VATR415,72 excl. VAT | Add to quote |
| Guardrail Posts and Spacer Blocks - Spacer Blocks 360mm x 100mm x 50mmSpacer Blocks 360mm x 100mm x 50mm. | Sp360x100x50 | R25,90 incl. VATR22,52 excl. VAT | Add to quote |
| Guardrail Posts and Spacer Blocks - Spacer Blocks 360mm x 115mm x 115mmSpacer Blocks 360mm x 115mm x 115mm. | Sp360x115x115 | R58,11 incl. VATR50,53 excl. VAT | Add to quote |
| Guardrail Posts and Spacer Blocks - Spacer Blocks 360mm x 150mm x 100mmSpacer Blocks 360mm x 150mm x 100mm. | Sp360x150x100 | R86,19 incl. VATR74,95 excl. VAT | Add to quote |
| Guardrail Posts and Spacer Blocks - Spacer Blocks 360mm x 150mm x 150mmSpacer Blocks 360mm x 150mm x 150mm. | Sp360x150x150 | R65,75 incl. VATR57,17 excl. VAT | Add to quote |
| Guardrail Posts and Spacer Blocks - Spacer Blocks 360mm x 200mm x 150mmSpacer Blocks 360mm x 200mm x 150mm. | Sp360x200x150 | R180,33 incl. VATR156,81 excl. VAT | Add to quote |
No options match that search. Clear the field or send a general product RFQ.
Availability and lead time subject to confirmation. Delivery is quoted separately.
About guardrails
Guardrail work is specified project by project, so we quote every guardrail order against your drawings, tender document or engineer's specification rather than a standard price.
Attach the specification to your quote request and include required quantities and site location. We confirm availability, treatment and lead time in writing.
Common uses
- Road-safety barrier posts
- Spacer blocks for W-beam barriers
- Municipal and tender projects
- Private estate roads
Diameters, to scale
Treatment and safe handling
Pressure treatment is what lets pine stand outdoors and in the ground for years. Here is how it works, and what the hazard classes on a quote mean.
How pressure treatment works
- Load. Dried timber goes into a sealed treatment cylinder.
- Vacuum. Air is drawn out of the cylinder and out of the wood cells.
- Pressure. Preservative floods in and is forced deep into the timber.
- Fix. A final vacuum removes excess, and the preservative fixes in the wood to protect it against fungal decay and wood-boring insects.
Hazard classes (SANS 10005)
| Class | Where the timber is used | Typical examples |
|---|---|---|
| H2 | Indoors, dry, above ground | Roof timbers |
| H3 | Outdoors, above ground | Pergola beams, rails, decking |
| H4 | In ground or fresh-water contact | Fence posts, garden poles |
| H5 | In ground or fresh water where failure would be serious | Structural building poles, retaining structures |
| H6 | In sea water | Jetties, marine structures |
Standard items are supplied with the treatment specified for that product. If your project calls for a specific class such as H5 or H6, creosote, untreated timber or SABS-marked product, say so in your quote request and we will confirm before supply.
Working with treated timber
- Wear gloves, a dust mask and eye protection when sawing or drilling, and cut outdoors.
- Sweep up sawdust and offcuts, and dispose of them with general waste.
- Never burn treated timber, offcuts or sawdust.
- Wash your hands before eating, drinking or smoking.
- Do not use treated timber where it will touch food, drinking water or animal feed.
Questions about guardrails
Can you supply to a tender specification?
Yes. Upload the specification with your quote request and we will confirm compliance, availability and lead time before you commit.
Often ordered with
Not sure which size you need?
Send your drawing or project details and we will recommend sizes and quantities. Call 021 905 7054 or WhatsApp 082 309 1869.


