Foundation Trench Blocks

TRENCHBLOCK T&G 355MM 440X215 3.6N GRAB 1.5M2 PK
Product code: JPA-50013285

£70.20 £58.50

/ Price Per Square Metre
300mm Mannok Trench 440x215 3.6N
Product code: JPA-50014639

£6.24 £5.20

/ Each
300mm Thermalite Trench 440x215 3.6N
Product code: JPA-50014641

£6.36 £5.30

/ Each
355mm Thermalite Trench 440x215 3.6N
Product code: JPA-50014642

£7.20 £6.00

/ Each

About Our Foundation Trench Blocks

We supply foundation trench blocks that streamline below-ground construction by replacing traditional strip footings. These specialist masonry units sit directly in foundation trenches, forming a solid base for load-bearing walls without the need for poured concrete.

Our concrete foundation blocks reduce excavation depth, material costs, and construction time on residential and commercial projects alike. The system works by creating a blockwork foundation that rises to damp proof course level, eliminating formwork and concrete curing delays.

These trench blocks are available in 300mm and 355mm dimensions, and suit standard foundation widths and building regulation requirements for single and two storey structures. Building control typically accepts foundation trench blocks on stable ground conditions where soil bearing capacity supports blockwork alternatives to conventional strip footings.

Our Range of Foundation Trench Blocks

Trench blocks provide a faster alternative to pouring concrete foundations. By placing these blocks directly into the foundation trench, you will be able to eliminate formwork, reduce concrete usage, and speed up ground floor construction.

Our concrete foundation blocks come in standard 440mm x 215mm face dimensions with depths of 300mm and 355mm, matching typical foundation requirements for domestic and light commercial buildings.

The compressive strength of foundation trench blocks meets structural demands for load bearing walls, with 3.6N grades suitable for most residential applications. You can lay trench blocks quickly in standard mortar, bringing the foundation up to damp proof course level without waiting for concrete to cure.

Using trench blocks reduces groundwork costs by minimising excavation width and depth compared to traditional strip footings. The blocks arrive ready to lay, cutting out concrete delivery scheduling and weather dependent pouring.

Our stock includes recognised brands that meet current standards for dimensional tolerance and compressive performance.

For projects requiring different blocks above ground level, our wider range includes aerated and dense options to suit your wall specification.

Find Foundation Trench Blocks at Joseph Parr Alco

Purchase foundation trench blocks online or contact us to discuss your groundwork quantities and delivery schedule.

Set up a trade account to streamline ordering and access your pricing instantly. View our delivery and collection service to arrange logistics that match your build timeline.

With over a century of experience, choose Joseph Parr Alco as your reliable Greater Manchester building merchant.