Concrete & Aircrete Blocks for sites in County Down

Our concrete blocks range for County Down jobs

• 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.
• Hollow and cellular blocksLighter dense blocks with voids, used for some garden and retaining walls.
• Dense concrete blocksHeavy, strong blocks for loadbearing walls, below ground and good sound separation.
• Aircrete (aerated) blocksVery light, easy to cut and good insulators; check the strength grade for loadbearing work.

Concrete & Aircrete Blocks delivered in County Down towns

• Concrete & Aircrete Blocks in Bangor (Down)
• Concrete & Aircrete Blocks in Newtownards
• Concrete & Aircrete Blocks in Banbridge
• Concrete & Aircrete Blocks in Holywood
• Concrete & Aircrete Blocks in Downpatrick
• Concrete & Aircrete Blocks in Warrenpoint

How much will you need?

A single-skin block wall in County Down 5 m long and 2.1 m high is 10.5 m². At 10 blocks per square metre plus 5% you need 111 blocks, with about 0.15 tonnes of building sand and 2 bags of cement for the mortar at 1:4. Try the block calculator

Getting concrete blocks onto your County Down 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.

• On busy streets in County Down, a parking suspension or a quiet time slot can make offloading safer, so tell us about local restrictions you know of.
• 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.

Getting the right 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.

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 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.

Concrete & Aircrete Blocks in County Down: questions

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

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.

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.

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.

How soon can concrete blocks be delivered in County Down?

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.