Aggregate makes up the bulk of any concrete pour, so its grading and cleanliness set the ceiling on what the mix can achieve. Build Hub supplies graded aggregate across Zanzibar for concrete production, civil works and sub-base.
Larger aggregate suits mass concrete and thick sections where there is room between the reinforcement. Smaller aggregate is used in thinner, congested pours — slabs, columns and beams with tight bar spacing — where a large stone would bridge between bars and leave voids.
Sub-base and drainage applications are a different question again: there the priority is a stable, well-locking or free-draining material rather than one optimised for concrete strength.
For a project pouring concrete over weeks, consistent aggregate matters as much as the aggregate itself. Changing source mid-project changes the water demand and workability of the mix, and the site notices it as a change in finish. We plan aggregate supply against the pour programme for this reason.
Projects rarely order one material alone. These are the categories most often quoted alongside it.
Sand is the material most often blamed for a bad wall and least often specified properly. Build Hub supplies construction sand across Zanzibar for blockwork, plaster, screeds and concrete, sourced for the use it is going into.
View detailsCrusher dust is the fine material produced when rock is crushed, and it is the standard bedding layer under paving. Build Hub supplies crusher dust across Zanzibar for bedding, screeds, blinding and general construction use.
View detailsCement is the one material on site with a shelf life, so supply is a scheduling problem as much as a purchasing one. Build Hub supplies cement in Zanzibar coordinated against your pour and blockwork programme.
View detailsMaterial that arrives on the wrong day costs as much as material that never arrives. Build Hub delivers building supplies across Unguja on a planned schedule tied to the construction programme, not to whichever truck happens to be free.
View detailsIt depends on section thickness and reinforcement spacing — congested pours need smaller aggregate. Send the pour details with your enquiry and we will supply against them.
Yes. Sub-base, hardcore and drainage materials are supplied alongside concreting aggregate.
Deliveries are scheduled against your programme. Give us the pour dates and we will plan loads around them rather than dumping the full quantity in advance.
Upload your BOQ or send us your full material requirement and Build Hub will prepare a consolidated quotation.
Send your quantities, site location and required dates — or attach a BOQ or material schedule — and our team will come back with a written quotation and a delivery plan.
