Quantities & Estimating
How much concrete blocks do I need for my project?
Direct answer
A 20cm block wall takes about 12.5 blocks per square metre. A 100 sqm wall needs roughly 1,250 blocks and 2.5 tons of masonry mortar. For an exact take-off across every trade, Benna's free BOQ calculator turns your project dimensions into a priced material list you can add to cart in one click.
Concrete Blocks key specifications
| Price range | SAR 2.2-6.5 per block |
|---|---|
| Minimum order | 1 truckload (about 500-800 blocks) for site delivery |
| Common sizes | 40×20×10, 40×20×15, 40×20×20 cm |
| Blocks per m² | 12.5 |
| Compressive strength | 4-7 N/mm² |
| Thermal block U-value | 0.4-0.6 W/m²K |
| Standards | SASO GSO 1929 — compressive strength and dimensional tolerance |
Key takeaways
- A 20cm block wall takes about 12.5 blocks per square metre. A 100 sqm wall needs roughly 1,250 blocks and 2.5 tons of masonry mortar.
- Hollow concrete blocks are cheapest for structure; AAC thermal blocks cost more but cut cooling load sharply in Saudi summer conditions.
- Available brands: Bin Quraya, Saudi Block Factory, Al Watania, Ytong AAC
- Delivered to 165+ Saudi cities.
Related questions
How much concrete blocks do I need?▾
A 20cm block wall takes about 12.5 blocks per square metre. A 100 sqm wall needs roughly 1,250 blocks and 2.5 tons of masonry mortar.
Which standards apply to concrete blocks in Saudi Arabia?▾
SASO GSO 1929 — compressive strength and dimensional tolerance
What is the minimum order quantity?▾
1 truckload (about 500-800 blocks) for site delivery