Order concrete blocks for delivery in Letchworth Garden City

Concrete & Aircrete Blocks available for Letchworth Garden City delivery

• Hollow and cellular blocksLighter dense blocks with voids, used for some garden and retaining walls.
• Aircrete (aerated) blocksVery light, easy to cut and good insulators; check the strength grade for loadbearing work.
• Dense concrete blocksHeavy, strong blocks for loadbearing walls, below ground and good sound separation.
• Trench and foundation blocksWide blocks laid in foundation trenches instead of lots of concrete.
• Lightweight aggregate blocksLighter to handle with better thermal performance than dense blocks.

Things to check before you order

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.

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.

Getting concrete blocks onto your Letchworth Garden City 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. Letchworth Garden City is inside our standard mainland delivery area.

• Give us the full postcode for the drop point; deliveries around SG6 are priced to the exact address.
• 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.

Quantities: a worked example

A single-skin block wall in Letchworth Garden City 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

Questions about concrete blocks delivery in Letchworth Garden City

Can I add other materials to my Letchworth Garden City 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 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.

Is there a minimum order for delivery to Letchworth Garden City?

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.

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.