Build it Postfix 20kg

Postfix is a ready to use, fast setting concrete designed specifically for erecting posts. Supplied as a pre-blended mix of cement, aggregates, sands and additives, it requires no separate batching of materials, only the addition of water on site. Once mixed it begins to set within five to ten minutes and typically reaches a strength of more than 20N/mm² after 28 days.

Its rapid set makes it well suited to fencing, gate posts, sign posts, pergolas and similar upright fixings, holding posts firm in minutes rather than relying on the longer cure of a conventional concrete mix. Postfix is supplied in 20kg water resistant bags for straightforward handling and storage on site.

Postfix suits timber, metal and concrete posts, giving a single product for most post fixing work across fencing, gates and outdoor structures. The pre-blended formulation removes the inconsistency of gauging separate cement and aggregate by hand, while the water resistant bag protects the mix before use. It should not be used on frozen ground or in very cold conditions.

Benefits

• Sets in five to ten minutes for a quick, firm hold on posts
• Reaches more than 20N/mm² at 28 days for a durable, long term fixing
• Pre-blended for consistent results without site batching
• Single mix suits timber, metal and concrete posts
• Water resistant bag protects the product and aids site storage

Good to know 

• Supplied in 20kg water resistant bags
• Ready to use, requiring only the addition of clean water, with no separate mixing of cement and aggregate
• Not suitable for use on frozen ground or in very cold conditions; follow the temperature guidance printed on the bag