BEST COMPANY INCONCRETE & ECOSLABS.
Prestressed Precast T-Beams & Hollow Pumice Blocks — Kimbo, Ruiru
WE MANUFACTURE PROFESSIONAL & QUALITY MATERIALS
WHY CHOOSE US?
Promax Manufacturing Limited is a concrete manufacturing company offering quality services and solutions to the building sector with our head office and factory located in Kimbo, Ruiru, Nairobi (behind Rubis Petrol Station).
We pride ourselves in manufacturing Ecoslabs Beams and Blocks, Coloured Cabros and Blocks, Supply of Building Materials, and Transport Services within Kenya. We work closely with homeowners, contractors, and structural engineers to achieve sustainable, high-speed, cost-effective slab construction with transparent zero-markup factory pricing.
YOUR CONSTRUCTION PARTNER
MAIN SERVICES
Ecoslabs Beams & Blocks
Eco-slab is a prestressed and precast slab with ribs offering a rapid solution to high quality, economical concrete floor and roof construction.
Coloured Cabros & Blocks
High-strength vibrating-table moulded paving blocks and coloured cabros engineered for heavy duty driveways, parking, and walkways.
Building Materials
We offer a wide range of construction materials at affordable factory rates: concrete blocks, steel bars, ballast, river sand, and BRC mesh.
Transport Services
Promax Manufacturers offers construction material transport to your site at a considerate fee across Kenya for beams, blocks, sand, and ballast.
Precast & EcoSlabs Materials
Factory-manufactured precast beams, EcoSlab systems, and hollow infill blocks prepared and cut to your project's exact structural spans on order, with nationwide site delivery across Kenya.
Prestressed Concrete T-Beam
High-strength inverted T-section precast beams engineered with high-tensile prestressed steel tendons. Completely self-supporting with NO formwork or timber shuttering needed.
Prestressed Concrete Flat Beam
Ultra cost-effective, compact precast flat beams tailored for residential homes, bungalows, and multi-unit developments with spans up to 4.0 meters. Lightweight for easy manual handling.
T-Beam Hollow Infill Block
Lightweight hollow concrete blocks specifically rebated to fit securely onto the lower flanges of PROMAX ECOSLABS T-Beams, delivering exceptional acoustic and thermal insulation.
Flat Beam Hollow Infill Block
Specially engineered infill blocks with shallow seating shoulders designed to nest alongside our 545/m Flat Beams, producing a level, flush soffit ceiling ready for direct plaster.
Turnkey Precast EcoSlab Package
Complete EcoSlab material package bundled and delivered together: Prestressed Precast Beams cut to architectural spans, Hollow Infill Blocks, BRC Mesh A142, Cement bags, Sand & Ballast aggregate.
BRC Mesh & Construction Accessories
High-tensile welded BRC A142 wire fabric for structural slab screeds, telescopic adjustable steel props, and formwork timber battens for temporary propping during casting.
Heavy Duty Concrete Cabro Paving Blocks
High-density hydraulic-pressed concrete paving blocks engineered for high compressive strength. Perfect for residential driveways, commercial parking, walkways, and industrial access roads.
Precast Concrete Wall Panels
Precision precast boundary and structural wall panels for rapid installation. Reduces walling labour and completion time by up to 70% with smooth, plumb, ready-to-finish surfaces.
Ecoslabs Beam & Block Calculator
Calculate exact prestressed Ecoslab T-beams, hollow infill blocks, BRC mesh, and 50mm screed topping in seconds with 0% profit markup added.
Flat Beam System
KES 545 / m • KES 90 Blocks
Best for residential homes and bungalows. Lightweight crane-free installation.
T-Beam System
KES 1,200 / m • KES 100 Blocks
Inverted T profile. Self-supporting with NO timber shuttering required.
Rooms
Required Quantities Breakdown
Promax Ecoslabs calculates exact structural beams, blocks, and screed materials with Zero Profit Markup. Toggle "Cost Estimation" to inspect transparent direct rates.