Order concrete blocks for delivery in Catford

Which concrete blocks can you order in Catford?

• Dense concrete blocksHeavy, strong blocks for loadbearing walls, below ground and good sound separation.
• 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.
• Block paving and edgingsOn request alongside your sub-base and sand.
• Aircrete (aerated) blocksVery light, easy to cut and good insulators; check the strength grade for loadbearing work.

Getting concrete blocks onto your Catford 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. Catford is inside our standard mainland delivery area.

• Clear a level area for pallets, ideally on boards, so materials stay out of standing water.
• Weight limits on bridges or private roads near the site matter for larger lorries, so mention any you know of.
• Have someone on site for the delivery if you can, or agree a safe drop point with us in advance.

Things to check before you order

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.

Thickness

100 mm is the common inner-leaf thickness. Wider blocks (140, 190, 215 mm) are used for separating walls, single-skin garage walls and foundations.

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.

A quick quantity check

A single-skin block wall in Catford 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

Concrete & Aircrete Blocks questions

How many blocks per square metre?

Standard 440 × 215 mm blocks with 10 mm joints lay at about 10 blocks per square metre of wall. Add around 5 percent for cuts.

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.

Can I add other materials to my Catford 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.

How soon can concrete blocks be delivered in Catford?

We confirm the delivery date when we price your order, before you commit. It depends on the product, the quantity and whether it is a stock line or made to order.