Concrete & Thermal Blocks
We supply a practical range of concrete dense blocks and thermal blocks commonly specified for structural walls, internal partitions and cavity construction. Our range covers the core sizes and strengths used on site every day, making it easy to source the right block without overcomplicating the build.
Discover Our Full Product Range:
| Product Type | Product Name |
| Concrete Dense Block | 100mm Concrete Dense Block |
| Concrete Dense Block | 140mm Concrete Dense Block |
| Concrete Dense Block | 215mm Concrete Hollow Dense |
| Thermal Block | 100mm Thermalite 3.6N |
| Thermal Block | 140mm Thermalite 3.6N |
| Thermal Block | 215mm Thermalite 3.6N |
| Thermal Block | 100mm Thermalite 7N ( Hi – Strength) |
| Thermal Block | 140mm Thermalite 7N ( Hi – Strength) |
| Thermal Block | 215mm Thermalite 7N ( Hi – Strength) |
| Thermal Block | 100mm Celcon 3.6N |
| Thermal Block | 140mm Celcon 3.6N |
| Thermal Block | 215mm Celcon 3.6N |
| Thermal Block | 100mm Celcon 7N ( Hi – Strength) |
| Thermal Block | 140mm Celcon 7N ( Hi – Strength) |
| Thermal Block | 215mm Celcon 7N ( Hi – Strength) |
| Thermal Block | 100mm Mannok Aircrete Standard Block 3.6N |
| Thermal Block | 140mm Mannok Aircrete Standard Block 3.6N |
| Thermal Block | 215mm Mannok Aircrete Standard Block 3.6N |
| Thermal Block | 100mm Mannok Aircrete Standard Block 7.5N |
| Thermal Block | 140mm Mannok Aircrete Standard Block 7.5N |
| Thermal Block | 215mm Mannok Aircrete Standard Block 7.5N |
| Thermal Block | 100mm Fibolite / Ultralite 3.6N |
Which Block Should You Use?
Dense blocks are typically used where strength and durability are required, such as structural and loadbearing walls. Thermal (aircrete) blocks are lighter, easier to cut and better suited to external walls and partitions where thermal performance matters.
Most projects will use a combination of both, depending on drawings and Building Control requirements.
Built for Day-to-Day Site Work
Our block range covers the sizes and strengths most commonly specified on domestic and commercial jobs. Whether you’re building at scale or working on a one-off project, we focus on keeping the core lines builders actually need readily available.
FAQ’s:
What’s the difference between dense blocks and thermal blocks?
Dense blocks are heavier and used where strength and durability are the priority. Thermal blocks are lighter, easier to cut, and help reduce heat loss through the wall.
Are thermal blocks suitable for external walls?
Yes. Thermal blocks are widely used in cavity wall construction to improve thermal performance when combined with insulation.
Do block sizes affect build speed?
They can. Lightweight thermal blocks are quicker to lay and easier to handle, especially on larger runs or internal work.
If I’m not sure what block is specified, can you help?
Yes. If you’ve got drawings or a description of the wall build-up, we can help you identify what’s typically used for that application.