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In setting out your building, especially in Nigeria, we use concrete works and sandcrete blocks.
For walls and space partitions, we use sandcrete blocks. Sandcrete blocks mean blocks made from a mixture of sand and cement.
Sandcrete blocks comes in 4 inches, 6″ and 9″ blocks. Solid or hollow blocks.
Clay blocks comes in various sizes depending on the manufacturer. Solid or hollow blocks.
During the day, the hollow blocks absorb heat from the outdoor environment and it circulates within the hollowness.
At day time, the indoor air is cool and outdoor is hot.
At night time, that hot air stored within your block wall moves into your interior and that’s why you feel warm at evenings between 5-10pm.
To maintain indoor air quality, I suggest we go back to the use of clay bricks/blocks for our tropical environment.
Remember how clay pots keep drinking water fresh and cool in the olden days, that’s what I’m talking about.
They maintain indoor air quality irrespective of outdoor air.
When comparing Sandcrete vs Clay blocks in other areas including strength and longevity:
Sandcrete blocks absorbs water and expands causing growth of algae, the surface finish on Clay blocks make it water resistant.
Cement in the Sandcrete gives you 100 years maximum and Clay gives up to 1000years.
READ ALSO: Your Easement right to your neighbour’s property.
Sandcrete blocks can be plastered and painted on but Clay blocks can’t be painted on because it secretes metallic salts that cause paint to peel off.
Clay blocks are resistant to fire when compared to Sandcrete blocks.
Finally, I suggest concrete for all structural elements (foundation, floors, columns) in your building and Clay blocks for walls and space partition.
For bathroom areas, you can use Sandcrete blocks to enable use of wall tiles for surface finish.
So Sandcrete vs Clay blocks: which do you prefer, which one are you using or which one are you going to use?