Colinwell manufactures Allan Block retaining wall systems under licence from Allan Block, the world leader in segmental retaining wall technology. Backed by British Board of Agrément (BBA) certification, these systems offer a proven design life of over 120 years and are approved for use on roads and infrastructure projects across the UK and Ireland. From garden walls to engineered structures, Allan Block provides the strength, flexibility and performance needed to meet the demands of modern construction -quickly, efficiently and reliably.
The Allan Block range is designed to make retaining wall construction simpler, safer and more efficient. Each block features a patented front lip that creates a built-in setback and removes the need for pins, clips, or mortar - reducing installation time and ensuring a clean, professional finish. A chamfered edge adds an extra layer of safety by creating an anti-climb surface once the wall is built.
Available in a range of setback angles 1°, 3°, 6°, or 12 °, and 5 colours, Allan Block can be tailored to suit everything from private landscaping projects to heavily loaded or critical structures. Its hollow-core design makes blocks easier to handle and improves drainage, while our geogrid-compatible system provides high connection strength and stability for taller walls or challenging ground conditions. Made with up to 65% recycled content and fully compliant with UK and EU standards, Allan Block is a dependable, sustainable choice for retaining wall construction.
To help you get started, our in-house design team offers a free site-specific preliminary design service to meet your project’s unique requirements.
We provide free quotes for all construction materials required for a project. If you would like a quote, or have any queries, please get in touch by;
We look forward to supplying your construction project with industry-leading block retaining wall technology.
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