Building Materials
Concrete & Aircrete Blocks delivered to Merthyr Tydfil
Concrete blocks are large masonry units, normally 440 × 215 mm on face, that lay at about 10 blocks per square metre; they come as dense aggregate, lightweight aggregate or aircrete (aerated) blocks.
Order concrete blocks for Merthyr Tydfil with one message: we check the quantities, price the delivery and confirm everything before you pay.

Concrete & Aircrete Blocks to Merthyr Tydfil: the basics
- How it arrives
- Banded pallets, usually crane offload
- Postcode districts
- CF47, CF48, CF44, CF81
- Delivery
- Standard mainland delivery
- Delivering to
- Merthyr Tydfil, Mid Glamorgan
- Daylight
- About 7h 47m on the shortest day
- Nearby (straight line)
- Aberdare (4 mi), Rhondda (7 mi), Ebbw Vale (8 mi)
Choosing from our concrete blocks range
- Hollow and cellular blocksLighter dense blocks with voids, used for some garden and retaining walls.
- 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.
- Trench and foundation blocksWide blocks laid in foundation trenches instead of lots of concrete.
Before your Merthyr Tydfil delivery arrives
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. Merthyr Tydfil is inside our standard mainland delivery area.
- If the drop point is block paving or soft ground, say so; heavy pallets and bulk bags can mark or sink.
- Clear a level area for pallets, ideally on boards, so materials stay out of standing water.
- If neighbours share the access, it helps to let them know a lorry is coming.
Getting the right concrete blocks
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.
Wales has its own Approved Documents, including its own Part L for energy efficiency, and building control is handled by the local authority or a registered approver.
How much will you need?
A single-skin block wall in Merthyr Tydfil 8 m long and 2.7 m high is 21.6 m². At 10 blocks per square metre plus 5% you need 227 blocks, with about 0.31 tonnes of building sand and 3 bags of cement for the mortar at 1:4. Try the block calculator
Your questions answered
How soon can concrete blocks be delivered in Merthyr Tydfil?
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.
How much mortar for blockwork?
Roughly 0.008 to 0.01 cubic metres of mortar per square metre of 100 mm blockwork, allowing for waste. Use our block calculator for sand and cement quantities.
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.
Can you deliver concrete blocks to a site with restricted access in Merthyr Tydfil?
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.
Other towns near Merthyr Tydfil
- Concrete & Aircrete Blocks in Aberdare
- Concrete & Aircrete Blocks in Rhondda
- Concrete & Aircrete Blocks in Ebbw Vale
- Concrete & Aircrete Blocks in Brynmawr
- Concrete & Aircrete Blocks in Tonypandy
- Concrete & Aircrete Blocks in Pontypridd
Also available in Merthyr Tydfil
- Plywood in Merthyr Tydfil
- MOT Type 1 Sub-base in Merthyr Tydfil
- Metal Stud & Ceiling Systems in Merthyr Tydfil
- PIR Insulation Boards in Merthyr Tydfil
- Planed Timber & Mouldings in Merthyr Tydfil
- Bagged Concrete & Mortar Mixes in Merthyr Tydfil
- CLS Studwork Timber in Merthyr Tydfil
- Roofing Materials in Merthyr Tydfil
Send your list, get a delivered price
Tell us what you need and where it is going. We check the quantities and come back with a delivered price before you commit.
