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Lignacite 100 mm 7.3 N Concrete Blocks - Fine-Textured Loadbearing Units

Name: Lignacite 100 mm 7.3 N Concrete Blocks - Fine-Textured Loadbearing Units
Brand: Lignacite Ltd
SKU: sKqFzbwmm5d2dSVuGYWd8m

Verified by manufacturer 3 months ago

Lignacite Ltd

Product certifications:

ISO/IEC 27001:2022 Information security, cybersecurity and privacy protection — Information security management systems — Requirements
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EPD
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BSI Kitemark
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Part of a range of fine-textured loadbearing units, suitable for facing and general purpose applications.

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BOS

+44 (0)1842 810678 Website

Application

For walls that are to be directly decorated, Paint Grade blocks should be specified.

For walls built fair, Fair Face blocks should be specified.

Walls of 210-215mm thickness are recommended to be constructed using two leaves of 100mm Lignacite blocks laid back-to-back and suitably tied. This construction is known as a collar-jointed wall.

Can be used in the following locations:

The inner and outer leaves of external cavity walls;
Internal walls including fire break walls;
Separating walls including those conforming to Robust Detail specifications;
External and internal walls below ground (3.6 N/mm² blocks can be used in both inner leaf and internal walls; 7.3 N/mm² blocks to other locations);
Infill units to beam and block flooring.
Fair-faced blocks are recommended for internal use.

The blocks can accommodate drylining, dense plaster, finishing coats and external rendering. Consult manufacturer for further finish recommendations.

Description

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.

The 140 mm width version (known as Lignacite SP; specified separately) has a specially formulated mix that optimises 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 6697:2019, 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 8103-2, BS EN 1996-1-1:2022 and the requirements of the Building Regulations.

General information

Color	Grey
Finish	Textured
Material	Concrete Aggregate Manufacturer guidance Medium density aggregate concrete.
Shape	Rectangle
Length	440 mm
Width	100 mm
Height	215 mm

Uniclass	Pr_20_93_52_01 Aggregate concrete blocksPrimary
CAWS	E60/297 Proprietary infill blocks F10/18 Concrete facing blockwork F10/355 Concrete common blockwork

SKU Code	L1007

Product range	Lignacite Medium Dense Block Range

Specification data - Aggregate concrete blocks

Classification data
Standard	To BS EN 771-3.
Block description	Common block (standard). Guidance for specification option: For locations where the surface will not be visible e.g. for plastering or use below ground. Fair-faced block. Guidance for specification option: For locations requiring a consistent colour and close textured block face. Paint-grade block. Guidance for specification option: For locations where a consistent close textured face is required as a background for direct painting. Manufacturer guidance Fine textured, loadbearing units for facing and general purpose applications.
Appearance	Medium grey in colour with a fine textured surface.
Configuration	Group 1.
Compressive strength	-
Mean value	7.3 N/mm².
Category	M4.
Thermal conductivity	0.9 W/m·K at 3% moisture content.
Thermal resistance	0.111 m²K/W at 3% moisture content.
Work sizes (length x width x height)	440 x 100 x 215 mm.
Tolerance category	D1.
Density	-
Net dry density	1570 kg/m³.
Reaction to fire	Class A1.
Water absorption by capillarity	5/15 µ.
Moisture movement	<0.7 mm/m.
Weighted sound reduction index, Rw	No finish: 46 dB; paint finish: 47 dB.
Fire resistance	Non-loadbearing wall (criteria E1): 2 hours; loadbearing wall (criteria RE1): 2 hours. Guidance for specification option: See manufacturer's literature for further examples.
Third-party certification	BSI Kitemark approved KM 09694.
Air tightness	No finish: 3.0 m³/h/m²; paint finish: 0.5 m³/h/m².
Unit weight	14.9 kg. Guidance for specification option: Laid weight including mortar: 159 kg/m².

Sustainability data

Contains Red List materials	No
Country of material origin	United Kingdom
Country of product manufacture	United Kingdom
Material	Concrete Aggregate Manufacturer guidance Medium density aggregate concrete.
A1–A3 ('Production stage')	Embodied carbon as defined in BS EN 15804
Normalized unit	0.133 kg CO₂ eq/kg
Declared unit	20.9 kg CO₂ eq/m² Certified Guidance for specification option: Rounded down to two decimal places; manufacturer's value is 0.174 kg·CO2e/kg. This figure is derived from the carbon value as per the EPD (27.9 kgCO2e) divided by the unit mass (160 kg/m²).
Recyclability	100%
Expected Life	100 year