Concrete & Aircrete Blocks for Derry/Londonderry, delivered to site

Our concrete blocks range for Derry/Londonderry jobs

• Aircrete (aerated) blocksVery light, easy to cut and good insulators; check the strength grade for loadbearing work.
• Block paving and edgingsOn request alongside your sub-base and sand.
• 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.

Sizing your order

A single-skin block wall in Derry/Londonderry 6 m long and 2.7 m high is 16.2 m². At 10 blocks per square metre plus 5% you need 171 blocks, with about 0.23 tonnes of building sand and 3 bags of cement for the mortar at 1:4. Try the block calculator

Things to check before you order

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 Northern Ireland building work follows the Building Regulations (Northern Ireland), with guidance in the Technical Booklets, and applications go to the council's building control team.

Getting concrete blocks onto your Derry/Londonderry 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. Deliveries to Northern Ireland include a sea crossing, so we quote each order individually.

• Mention any overhead cables, low branches or narrow gateways, because they decide whether a crane offload is possible.
• Tell us the best drop point, such as a driveway, front garden or the kerb, and whether a lorry can park close to it.
• On busy streets in Derry/Londonderry, a parking suspension or a quiet time slot can make offloading safer, so tell us about local restrictions you know of.

Ordering concrete blocks for Derry/Londonderry: FAQs

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.

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.

Is there a minimum order for delivery to Derry/Londonderry?

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 soon can concrete blocks be delivered in Derry/Londonderry?

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.