Order concrete blocks for delivery in Potters Bar

Our concrete blocks range for Potters Bar jobs

• Trench and foundation blocksWide blocks laid in foundation trenches instead of lots of concrete.
• 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.
• Block paving and edgingsOn request alongside your sub-base and sand.
• Hollow and cellular blocksLighter dense blocks with voids, used for some garden and retaining walls.

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

• Deliveries are to the kerb, drive or within crane reach; ask if materials need to go further.
• In summer Potters Bar gets around 16h 40m of daylight, but early deliveries still beat the traffic and give the longest working day.
• Give us the full postcode for the drop point; deliveries around EN6 are priced to the exact address.

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.

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.

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 Potters Bar 10 m long and 2.4 m high is 24 m². At 10 blocks per square metre plus 5% you need 252 blocks, with about 0.35 tonnes of building sand and 4 bags of cement for the mortar at 1:4. Try the block calculator

Common questions from Potters Bar

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.

Can I use blocks in the foundations?

Yes, using blocks made for below ground, often trench blocks or dense blocks of the specified strength. Building control will check foundation design.

Can you deliver concrete blocks to a site with restricted access in Potters Bar?

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.

Do you deliver concrete blocks to Potters Bar?

Yes. We deliver across Potters Bar, including EN6. Potters Bar is inside our standard mainland delivery area. Send your list or call 0800 088 6341 and we will price it delivered to your postcode.