Verified by manufacturer over a year ago
General purpose, medium density concrete blocks.
Ash GP blocks suit all general-purpose walling applications. It is recommended that walls of 215mm thickness are constructed using 100mm blocks laid flat.
Can be used to construct internal walls in commercial, industrial and leisure buildings. The blocks can be used for the following:
The blocks can accommodate drylining, dense plaster, finishing coats and external rendering. Consult manufacturer for further finish recommendations.
Ash GP medium density concrete blocks are robust and durable, making them the perfect choice for walls built above and below ground. Manufactured to BS EN 771-3, their textured faces provide an excellent surface for mortars, renders and plasters. They also provide a strong base for holding fixings.
Ash GP blocks contain a proportion of recycled materials, and their sustainability performance has been verified through an Environmental Performance Declaration (EPD).
Features and benefits:
Sound properties:
Ash GP blockwork provides excellent levels of sound insulation between buildings and adjoining rooms. It can be used in cavity party wall constructions in dwellings, satisfying the specifications for lightweight blockwork in accordance with Building Regulations’ Approved Document E. It can also be used to construct party walls meeting Robust Detail specifications (e.g., Robust Details E-WM-2, 4, 8, 11, 14, 17, 20, 21, 22, 27, 28 and 33).
Mortar:
Generally, the mortar type for work above ground level should be designation (iii) / Compressive Class M4. Designation (ii) / Compressive Class M6 is needed for work below ground in conditions where there is a risk of saturation with freezing. Consult manufacturer for details.
Movement joints:
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.
Appearance:
Ash GP blocks are manufactured with a distinctive scratched surface to aid the application of plaster and render finishes.
Design:
The design of walls using Ash GP blocks should be in accordance with relevant design standards, including BS 8103: Part 2 and BS EN 1996-1-1 and the requirements of the Building Regulations.
Color | Grey |
Finish | Grooved |
Material | Concrete |
Shape | Rectangle |
Length | 440 mm |
Width | 100 mm |
Height | 215 mm |
Uniclass | |
CAWS | E60/297 Proprietary infill blocks F10/18 Concrete facing blockwork F10/355 Concrete common blockwork |
Product range |
Standard | To BS EN 771-3. |
Block description | Medium density, load bearing block for general purpose walling applications. |
Appearance | Scratched surface to aid the key of plaster and render finishes. |
Configuration | Group 1. |
Compressive strength | |
Mean value | 10.4 N/mm². |
Category | M4. |
Thermal conductivity | 0.47 W/m·K at 3% moisture content (internal use), 0.51 W/m·K at 5% moisture content (external use). |
Thermal resistance | 0.212 m²K/W at 3% moisture content; 0.196 m²K/W at 5% moisture content. |
Work sizes (length x width x height) | 440 x 100 x 215 mm. |
Tolerance category | D1. |
Density | |
Net dry density | 1450 kg/m³. |
Reaction to fire | Class A1. |
Water vapour permeability | 5/15 µ. |
Moisture movement | <0.5 mm/m. |
SpecificHeatCapacity | 1000 J/kg/K. |
Weighted sound reduction index, Rw | 44–45 dB (dependent on application). Guidance for specification option: Plaster finish: 45 dB; plasterboard on dabs: 44 dB. |
Fire resistance | Non-loadbearing wall (criteria E1): 2 hours; loadbearing wall (criteria RE1): 3 hours. |
Third-party certification | BSI Kitemark approved. |
Unit weight | 14 kg. Guidance for specification option: Laid weight including mortar: 150 kg/m². |
Country of material origin | Europe |
Country of product manufacture | United Kingdom |
Embodied carbonA1-A3 (production stage) as defined in BS EN 15804 | 0.16 kg CO₂ eq/kg Self declared Guidance for specification option: Rounded down to two decimal places; manufacturer's value is 0.165 kg·CO2e/kg. This figure is derived from the carbon value as per the EPD (24 kgCO2e) divided by the unit mass (145 kg/m²). |
Recyclability | 100% |
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