Thermalite ‘Trenchblock Tongue and Groove’
Aircrete concrete block, foundation block
‘Strength 4.0 N/mm2
Thermal conductivity 0.15 W/mK
0.23 W/mK (below ground)
Density 600 kg/m3
Thermalite Trenchblock is a tried and tested, economical alternative to the construction of cavity walls with concrete infill for foundations.
• For use in soils of up to Design Sulfate Class DS 4
• Available with tongue and groove joints and handholds
• Improves thermal performance
Thicknesses: 255 - 355mm
Tongue and Groove
The tongue and groove joints enable blocks to slot easily together in one simple process. By joining the blocks together in this way, the perp-ends do not need to be mortared, providing a much quicker method of construction.’
| Material/s: | PFA, sand, cement, lime, aluminium & water |
| Environmental statement: | yes |
| BRE Ecopoints: | 1.93 per tonne |
| Green Guide rating: | ’A‘ (2006) |
| Environmental certification: | ISO 14001 |
| 3rd party accreditation: | BBA cert 00/3720 BBA cert 91/2723 |
| 3rd party product endorsement: | none |
| Quality certification: | ISO 9001 |
| Reusability / Recyclability: | reusable |
| Recycled content to ISO 14021: | 50% pulverised fuel ash (PFA) |
| Life expectancy | unknown |
| Substitute for or new materials / method: |
concrete blocks with virgin aggregate |
| Downloads: | Product brochure Environmental guide |
| Codes of Practice: | |
| Workmanship Work Section: | |
| Country/s of manufacture: | UK |
| UK distribution location: | Kent |
| Alternative products: | Blocks for strip foundations |
| Further information: | Blocks compared |
| Information last updated: | Saturday 3rd, May 2008 |
| Manufacturer's evidence rating:* |  |
| Manufacturer: | Hanson Thermalite |
| Address: | 6 Pembroke Road, Sevenoaks, Kent, TN13 1XR |
| Telephone: | 08705 626 500 |
| Fax: | 01234 762040 |
| Email: | info.buildingproducts@hanson.biz |
| Website: | www.hanson.co.uk |
| Supply chain availability: | Distributors |
| Supplier: | Contact manufacturer |
| Telephone: | 08705 626 500 |
| Email: | uksales@hanson.com |
| Website: | http://www.thermalite.com |
The product has been selected on the above average performance in the following areas:
| - | Abiotic depletion | - | Acidification |
| - | Global warming | - | Eutrophication |
| - | Ozone layer deplection |  |
Solid Waste |
| - | Human toxicity | - | Radioactivity |
| - | Fresh water aquatic ecotoxicity | - | Minerals extraction |
| - | Terrestial exotoxicity | - | Water extraction |
| - | Photochemical oxidation |
*Note:
Manufacturer's evidence rating
* One star rating: The product has been included based on an assessment of the manufacturer's own product information.
*** Three star rating: The product has been included on the basis of a third party, independent, Life Cycle Analysis (BRE Ecoprofile or similar).
