High-Quality Ready-Mix Concrete for Construction Projects in NI, ROI, and the UK
When it comes to construction, nothing sets the stage for a successful build like high-quality readymix concrete. The right concrete mix for construction keeps projects moving smoothly; the wrong mix can halt progress, create uncertainty, and lead to costly delays. At McGarrity Bros. Ltd., we deliver concrete that works exactly as your crew expects: accurate batching, dependable strength classes, ... More
OUR EXPERIENCE IN READY MIX CONCRETE
Concrete You Can Rely On, Experience That Works on Site
Since 1958, McGarrity Bros. Ltd. has worked closely with contractors, engineers, and self-builders across the region. That history has shaped how we batch, test, and transport our ready mix concrete. That is why every load we deliver is prepared with:
- Even flow and easy levelling
- Reinforcement-friendly mixes
- Accurate quantities to avoid delays
- Strength development that meets drawings and specifications
Our team advises on selecting the correct concrete grade, aggregate size, and any admixtures needed for curing conditions, placement methods, or reinforcement requirements. Because batching is completed off-site, your concrete delivery arrives with the precise proportions needed for your build. This reduces the risk of poor on-site mixing and ensures that foundations, slabs, and structural pours meet design requirements.
Every pour has its own needs
Choosing the Right Ready Mixed Concrete Grade for Every Project
Every grade is designed with the task in mind, so your crew can place, finish, and dry with certainty. Unsure which grade fits? McGarrity Bros Ltd. can walk you through the options and find the concrete mix that works best for your construction project.
C8/10N
Perfect for blinding house floors, filling cavities, or mass fill. A solid base that keeps the work above it stable.
C12/15N
Ideal for trench fill, paving steps and paths, blinding, and haunching. Reliable for general groundwork and smaller structural tasks.
C16/20N
Used for strip footings, under-paving for patios, foundations, and subfloors. Strong enough to take the weight without fuss.
C16/20N 10mm s/dry + retarder
Standard kerbmix concrete for setting and backing kerbs. Optional retarder lets you slow the set when needed.
C20/25N
Lightly reinforced house or garage floors, or infill for insulated concrete formwork (ICF). Perfect for residential loads.
C25/30N
Works well for lightly reinforced concrete, internal floors that see light foot or trolley traffic, and reinforced foundations.
C28/35N
Strong enough for general and agricultural reinforced concrete, floors in livestock or crop stores, domestic garages used as workshops, and laneways or driveways.
C32/40N
Built for wearing traffic in general industrial settings. Durable and dependable.
C35/45N
For medium industrial use where heavier loads and frequent traffic demand extra strength.
C40/50N
Heavy-duty industrial concrete for sites subject to extreme wear and weight.
Sand and cement
Ideal for paving screeds or finished floor screeds. Gives a smooth, level surface ready for use.
Admixtures That Make Every Pour Easier
No two pours are identical. Weather, placement method, distance from the plant, and reinforcement all influence performance. Our approved admixtures help your concrete behave exactly as needed:
Fibres/steel fibres
Improve tensile strength and help reduce surface cracking.
Note: Fibres are not a substitute for structural reinforcement.
WRA–water reducing agent
Enhance strength and reduce the risk of segregation and bleeding.
Plasticisers
Increase workability for easier placement while reducing shrinkage and thermal cracking.
Retarding agents
Slow setting time for hot weather, challenging placements, or long-distance deliveries.
Accelerators
Speed up setting in cold conditions or where early strength is required.
Each admixture is incorporated during batching for even distribution, ensuring consistent performance across the load.
Adaptable for Any Project
Concrete Sealers and Protection for Long-Lasting Surfaces
To maximise the lifespan of newly poured yards, slabs, and floors, we recommend applying a concrete sealer shortly after finishing techniques like brushing or power floating. Our sealer:
Cures and seals concrete in a single application.
Provides additional resistance to weathering, freeze-thaw conditions, and surface wear.
Is supplied in 25L containers, with 1L covering approximately 5–8 m².
Important considerations: Do not apply after saw-cutting and avoid washing newly poured concrete with high-pressure methods until fully cured. This ensures your surface maintains strength and durability over time.
LEADING CONCRETE SUPPLIERS
Quality Concrete Supply Across Northern Ireland, ROI, and the UK
Our fleet delivers ready mix concrete to sites of every size, from small residential pours to farm sheds, roadworks, warehouse floors, and large concrete slabs for commercial and industrial projects. Every concrete delivery is dispatched with careful scheduling so that contractors can plan labour, plant, and finishing work around the delivery window.
We understand how quickly conditions change on site, especially for large pours, tight access areas, or foundation work. Every load is scheduled carefully so teams can plan labour, plant, and finishing around the delivery window.
Consistent slump, predictable strength development, and reliable workability mean faster placement, smoother setting, and fewer site issues.
- Housing developments
- Foundations and footings
- Agricultural sheds and yards
- Commercial floors and industrial slabs
- Roadworks and civil engineering projects
- Precast installation works
- Self-build construction
WHY CHOOSE US
Why Construction Teams Choose McGarrity Bros. Ltd. For Quality Concrete Supply
Construction teams come back to us because our concrete exceeds performance expectations. There are no surprises and no extra work.
Key advantages of working with our concrete company include:
- Straightforward ordering with clear, practical guidance
- Reliable timing updates so crews know exactly when to expect the truck
- Mixes that place, compact, and settle cleanly on site
- Support when pours are complex, tight on time, or technically demanding
- A team that understands how construction sites actually run
- Local knowledge of NI and ROI ground conditions and site requirements
Our reputation comes from decades of steady, dependable performance across generations. Contractors return because they know what to expect: quality concrete supply that performs exactly as promised, produced with hands-on experience and delivered by a team who understands construction.
Simplify your next project
Contact us today to secure a quality readymix concrete supply to make sure your next pour goes exactly as planned: strong, steady, and stress-free.
Our readymix concrete is prepared, tested, and scheduled so crews can place, finish, and move on efficiently. Whether you’re pouring foundations, floors, paving, or industrial slabs, our team can help calculate volumes, advise on admixtures, and plan deliveries to fit your workflow.