Blue Circle Postcrete Cement 20kg
Product
| 20+ bags | 40+ bags | 60+ bags |
| £6.19ex. VAT | £6.13ex. VAT | £6.06ex. VAT |
Post mix for fence posts
This is a rule-of-thumb guide based on typical hole depths for the selected post length. Actual usage may vary due to ground conditions, hole size, and digging method.
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Mon 17 Nov
Standard Delivery
Tue 18 Nov
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Delivery & Returns Information
How Our Delivery Works
We work with a nationwide network of trusted suppliers. As a result, items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you'll see multiple delivery charges at checkout. We always aim to group products from the same supplier to keep delivery costs as low as possible.
Delivery Areas & Charges
Delivery charges listed on our website apply to mainland UK, excluding the following postcode areas: AB, CF, DD, DG, EH, FK, KA, KW, KY, IV, LA, LD, LL, ML, NP, PA, PH, SA, SY & TD
If your delivery address falls within one of these postcode areas, we’ll be in touch before processing your order to confirm any additional delivery costs.
Please note: We do not currently offer delivery outside the UK mainland.
Standard (Nationwide) Delivery
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Core Products Core
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|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 ex. VAT | £20 ex. VAT |
| Over £300 ex. VAT | FREE |
Core Delivery charges apply only when all products in an order that have equivalents are accepted as such. If even one product cannot be substituted with an equivalent, the entire order will not qualify for Core Delivery charges.
| Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £100 | £20 ex. VAT |
| Over £100 ex. VAT | FREE |
| Insulation, Plasterboard and Drylining Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £350 | £35 ex. VAT |
| Over £350 ex. VAT | FREE |
| Screws & Fixings and Adhesives & Sealants | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £50 | £5 ex. VAT |
| Over £50 ex. VAT | FREE |
Express Delivery
| Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £50 ex. VAT |
| Over £300 ex. VAT | £35 ex. VAT |
| Express Delivery - Insulation and Plasterboard & Drylining | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £50 ex. VAT |
| Over £400 ex. VAT | £35 ex. VAT |
Returns
We offer a 30 day returns policy on any faulty products.
Key Features
- {{fence}} Suitable for fixing wooden, concrete and metal fence posts
- {{update}} Sets quickly in 5-10 minutes
- {{water_drop}} Ready to use with just the addition of clean water
- {{verified_user}} Comes in handy 20kg weatherproof, tear-resistant plastic bags
Technical Specification
| Product: | Postcrete |
|---|---|
| Bag Type: | Plastic |
| Sales Unit: | Bag |
| Brand: | Blue Circle |
| Weight: | 20kg |
| Status: | Non-Returnable |
Technical Downloads
Product Overview
Blue Circle Postcrete supplied in 20kg weatherproof bags is a fast-setting, ready-to-use concrete mix specifically formulated for fixing all types of fence posts. The blend combines cement, graded sand, and performance additives in controlled proportions, eliminating the need for manual mixing.
Designed for rapid installation, Postcrete is poured directly into a water-filled post hole where it reacts immediately, setting firm within 5-10 minutes. The result is a stable, high-strength base ideal for timber, concrete, or metal posts used in fencing, landscaping, and light structural applications.
Its consistent formulation ensures dependable results with minimal effort, while the robust plastic packaging allows convenient outdoor storage and handling on site. Each 20kg bag provides an efficient and clean method of securing posts without the tools or mixing required by traditional concrete.
Features & Benefits
- Fast-setting formulation: Begins to harden within 5-10 minutes, reducing installation time.
- Ready to use: Requires only the addition of clean water - no pre-mixing or batching needed.
- Controlled strength: Balanced mix of cement, sand, and additives ensures reliable performance and durability.
- Ease of use: Simple pour-in-place method eliminates mess and reduces labour.
- Multi-post compatibility: Suitable for fixing wooden, metal, and concrete fence posts, gateposts, and bollards.
- Weatherproof packaging: Heavy-duty 20kg plastic bag resists moisture and damage for reliable on-site storage.
- Quick panel installation: Posts can support fence panels within approximately 10 minutes of setting.
- 20kg bag supply: Convenient size for manual handling and efficient use on small to medium fencing projects.
Applications
- Fence posts: Designed for rapid installation of timber, metal, and concrete posts.
- Gateposts and bollards: Provides secure anchorage for light structural supports.
- Rotary washing lines and signposts: Ensures stability for domestic and garden installations.
- Decking and garden structures: Suitable for pergolas, arches, and small outdoor frameworks.
- General landscaping works: Used wherever quick, controlled post setting is required.
Installation Guidance
- Prepare the hole: Excavate to three times the post width and one-third of the post height above ground.
- Add water: Fill the hole with clean water to around one-third of its depth.
- Pour in Postcrete: Add the dry mix directly into the hole, allowing it to absorb water evenly. Lightly sprinkle more water on top if required.
- Align and level: Position the post immediately, ensuring it is straight and plumb.
- Setting time: Mixture will begin to firm up within 5-10 minutes; fence panels may be fixed after approximately 10 minutes.
- Finish: Once hardened, backfill around the post with soil or turf as required.
Compliance & Performance
- Material specification: Pre-blended mix of cement, graded sand, and proprietary additives.
- Setting time: Initial set achieved within 5-10 minutes under normal conditions.
- Working temperature: Suitable for use in ambient temperatures above 3°C.
- Compressive strength: Formulated for post-fixing and light structural applications.
- Storage: Keep sealed in a dry place or store outside in original weatherproof bag.
- Important note: Do not pre-mix with water manually or mechanically; product is designed to set in situ when combined with water in the hole.
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