Lignacite SP 140 mm 7.3 N Concrete Blocks - Fine-Textured Loadbearing Units

Lignacite concrete blocks are fine textured and available with a paint grade or fair face finish. Manufactured to BS EN 771-3, Lignacite blocks are robust and durable with a technical performance that makes them well-suited to most applications.

The blocks’ unique mix design (consisting of cement, fine aggregates and recycled graded-wood particles) accounts for their outstanding technical performance.

This 140 mm-wide version, known as Lignacite SP, has a specially formulated mix that optimizes the block density to produce a solid block with a unit weight of less than 20 kg. There is a slight colour difference between Lignacite SP and 100 mm Lignacite blocks.

Features and benefits:

• Loadbearing.
• For use internally and externally, above and below ground.
• High levels of air tightness, sound insulation and fire resistance.
• Credits available under BREEAM and Code for Sustainable Homes.
• CE marked to BS EN 771-3.
• Can be used to satisfy the requirements of Part L of the Building Regulations.

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.

Movement:

Vertical movement joints should be considered in accordance with masonry design codes and the recommendations of Published Document PD 6697, at 6.0-8.0 metre spacings. In areas of raised stress, such as above and below openings in external walls, the blockwork may need to be reinforced to restrain movement.

Design:

The design of walls using Lignacite blocks should be in accordance with relevant design standards, including BS 8103: Part 2, BS EN 1996-1-1 and the requirements of the Building Regulations.