Lignalite Concrete Block Datasheet
Side view of a Lignalite Block.

Lignalite Concrete Block Block

Our 190mm Lignalite blocks are produced using ultra-lightweight aggregates, resulting in a product that conforms to 20kg manual handling guidelines. Ideal for all types of commercial project, their close-textured surface is perfect for direct decoration.

Manufactured to BS EN-771-3, Lignalite blocks are light and easy to lay with a technical performance fulfilling most applications.

Lignacite concrete blocks in buildings

Specification & Application



Block Wall Ties

Under normal conditions, wall ties should be embedded 50mm into the mortar on each leaf, staggered in alternate courses and spaced in accordance with the following.

Table 5 – Wall Tie Spacings

Leaf Thickness
Cavity Width
Horizontal Spacing
Vertical Spacing
Ties per m²
Less than 90mm50 - 754504504.9
Over 90mm50 - 1509004502.5

Block Mortar

Generally, the mortar type for work above ground level should be designation (iii) / Compressive Class M4. Stronger mixes may be required if blocks are used below ground.

Table 6 – Mortar Mixes

Mortar Designation
(as per BS 5628-3)
Compressive Strength Class
(as per BS EN 1996)
Recommended mix proportions of materials by volume
(iii)M41:1:5 to 6 - Cement:Lime:Sand.

1:5 to 6 - Cement:Sand with or without air entrainment.

1:4 to 5 - Masonry Cement:Sand (with non-lime filler).

1:3½:4 - Masonry Cement:Sand (with lime filler).
(ii)M61:½:4-4½ - Cement:Lime: Sand.

1:3 to 4 - Cement:Sand with or without air entrainment.

1:2½:3½ - Masonry Cement:Sand (with non-lime filler).

1:3 - Masonry Cement:Sand (with lime filler).

Site Practice

Lignalite Concrete Block block range

Datasheet View our EPDs Make an Enquiry Specify a Block

Product data updated: 18th Jan 2024

Google HQ: Bearing The Weight Of A Grand Vision


Read Case Study

The Whiteley: Bespoke Blockwork For A Unique Restoration

Mixed Use

Read Case Study

Construction photo of The Whiteley.