Concrete & Aircrete Blocks delivered to Darwen

Choosing from our concrete blocks range

• Trench and foundation blocksWide blocks laid in foundation trenches instead of lots of concrete.
• Block paving and edgingsOn request alongside your sub-base and sand.
• Dense concrete blocksHeavy, strong blocks for loadbearing walls, below ground and good sound separation.
• Lightweight aggregate blocksLighter to handle with better thermal performance than dense blocks.

A quick quantity check

A single-skin block wall in Darwen 4 m long and 2.4 m high is 9.6 m². At 10 blocks per square metre plus 5% you need 101 blocks, with about 0.14 tonnes of building sand and 2 bags of cement for the mortar at 1:4. Try the block calculator

Getting the right concrete blocks

Handling heavy blocks

Health and safety guidance discourages laying very heavy blocks by hand for long periods. Lighter blocks or planning the lift can make a big difference on site.

What strength do I need?

Most houses use 3.6 N/mm² or 7.3 N/mm² blocks. Your structural design, your building control officer or the block manufacturer's guidance sets the grade; tell us what is specified and we will match it.

In England, building work is checked against the Approved Documents, for example Part A for structure and Part L for energy efficiency, through your council's building control team or a registered building control approver.

Getting concrete blocks onto your Darwen site

Blocks are banded on pallets and usually crane-offloaded where the vehicle and access allow; tell us the weight limit of any drive or the ground where pallets will sit. Darwen is inside our standard mainland delivery area.

• Tell us the best drop point, such as a driveway, front garden or the kerb, and whether a lorry can park close to it.
• Deliveries are to the kerb, drive or within crane reach; ask if materials need to go further.
• Have someone on site for the delivery if you can, or agree a safe drop point with us in advance.

Your questions answered

Can you deliver concrete blocks to a site with restricted access in Darwen?

Usually, yes. Tell us about the access when you ask for a price and we will plan the vehicle and offload, or say if a smaller vehicle is needed.

Are aircrete blocks strong enough for an extension?

Many aircrete blocks are designed for loadbearing walls, but grades differ. Check the strength your design calls for and the manufacturer's guidance on use below DPC.

Do you deliver concrete blocks to Darwen?

Yes. We deliver across Darwen, including BB3, BB2, BB1, PR6. Darwen is inside our standard mainland delivery area. Send your list or call 0800 088 6341 and we will price it delivered to your postcode.

Can I use blocks in the foundations?

Yes, using blocks made for below ground, often trench blocks or dense blocks of the specified strength. Building control will check foundation design.