Armstart Foundation Blocks

Armstart Foundation Blocks are specially designed blocks used for constructing solid foundation walls below damp proof course (DPC). They provide a faster, simpler and more cost-effective alternative to traditional cavity wall construction below ground level.

By allowing solid foundation walls to be built in a single leaf, Armstart blocks reduce labour time, eliminate the need for wall ties and remove the risk of cavity collapse during construction.

Designed for strength and practicality on site, these blocks weigh under 20kg, making them safer and easier to handle during repetitive block laying.

Key Features

• Manufactured to BS EN 771-3 standards

• Designed specifically for foundation wall construction

• Creates solid foundation walls 250mm–350mm wide

• No cavity wall construction required below DPC

• No wall ties or cavity filling needed

• Suitable for soil conditions up to DS-3 classification

• Blocks weigh under 20kg for easier handling

• Non-combustible (Class A1 fire rating)

Typical Applications

• Foundation walls below DPC

• Supporting cavity walls above ground level

• Residential and commercial building foundations

Specifications

• Block sizes available:

  • 300mm x 275mm x 140mm

  • 350mm x 250mm x 140mm

  • 350mm x 215mm x 140mm

• Compressive strength: 7.3N/mm²

• Density: approx. 1450–1550 kg/m³

• Fire rating: Class A1

Local delivery available with fixed pricing based on distance.
Delivery zones up to 15 miles, with clear flat-rate charges.
All delivery prices include VAT.

Full info available on our Delivery Page.