Order concrete blocks for delivery in St Helens

Concrete & Aircrete Blocks available for St Helens delivery

• Trench and foundation blocksWide blocks laid in foundation trenches instead of lots of concrete.
• Hollow and cellular blocksLighter dense blocks with voids, used for some garden and retaining walls.
• Lightweight aggregate blocksLighter to handle with better thermal performance than dense blocks.
• Dense concrete blocksHeavy, strong blocks for loadbearing walls, below ground and good sound separation.

Working out quantities for your St Helens job

A single-skin block wall in St Helens 9 m long and 2.4 m high is 21.6 m². At 10 blocks per square metre plus 5% you need 227 blocks, with about 0.31 tonnes of building sand and 3 bags of cement for the mortar at 1:4. Try the block calculator

Choosing concrete blocks

Dense or aircrete?

Dense blocks are strong and good for sound separation but heavy; a 100 mm dense block can weigh around 20 kg. Aircrete blocks are much lighter and insulate better, which helps with energy targets, but need the right fixings.

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.

Delivering concrete blocks in St Helens

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. St Helens is inside our standard mainland delivery area.

• Mention any overhead cables, low branches or narrow gateways, because they decide whether a crane offload is possible.
• If neighbours share the access, it helps to let them know a lorry is coming.
• Clear a level area for pallets, ideally on boards, so materials stay out of standing water.

Common questions from St Helens

Can I add other materials to my St Helens delivery?

Yes. Put everything on one list, from concrete blocks to fixings and PPE, and we will price it as one delivery where the products can travel together.

Is there a minimum order for delivery to St Helens?

There is no fixed minimum. For very small orders we will tell you honestly if the delivery cost outweighs the materials, so you can decide.

How heavy is a concrete block?

It depends on the type and thickness. A 100 mm dense block is roughly 18 to 20 kg, a lightweight block noticeably less, and an aircrete block much less again.

What is the difference between 3.6 and 7.3 N/mm² blocks?

The number is the compressive strength. 7.3 N/mm² blocks carry more load and are often specified below ground or for heavily loaded walls; 3.6 N/mm² is common for upper storeys and partitions. Follow your drawings.