S4 · Honeycomb-finish concrete · On request · built by teams we train
The visible-hexagon concrete road, built flush by teams we train
OC-HD 40 set on a green bedding of M30–M40 PQC and filled flush with the same grade: the hexagon cell tops are the finish. No overlay, no grinding.
Honeycomb-finish concrete: the hexagon cell tops show in the finished road
Grid, fill, finished
A repair, start to finish
Why it wins
- Concrete stops at the top of the cell. No overlay, no groove cutting, no grinding: the hexagon pattern is the finish.
- Built by teams we train. We train your contractor’s execution team and give our S4 SOP with your paid order: for orders of 2,000 m² or more, our trainer comes on site for up to 3 days, once you confirm in writing that the site is ready and your execution team is available, and demonstrates about 100 m² of installation to the project agreement and the SOP; smaller orders are trained online at no extra cost. Mix design approved, slump per truck, finish height checked at the cell top, 7 days of curing before traffic.
- The only concrete we sell. Offered on request where a client wants a concrete look and accepts the method. We never put the grid under a slab.
- Open to traffic in 7 days. Cured for 7 days before traffic opens; full traffic at 14 days, full load at 28 days.
Where it fits
Plant roads · township and campus roads · premium parking · airport service corridors.
Method
In outline: the subgrade compacted to CBR 8 or more; a non-woven geotextile separation layer over it; GSB and/or WMM to the design, well compacted; then a bedding of M30 or M40 PQC, by design. OC-HD 40 is set on the bedding while it is green and anchored with U-nails, and the cells are filled flush with the same grade of PQC, with no layer above the grid, then power-floated to bring out the honeycomb. Expansion joints only at bay edges and against structures; the edges confined on every side. Cured for 7 days before traffic opens; full traffic at 14 days, full load at 28 days. Built by your contractor’s team, trained by GridMats; the detailed S4 SOP and its hold-point checklists come with a paid order.
Choose S4 when
- The client or consultant requires a concrete finish
- A visible hexagon concrete surface is wanted
- Areas where the specification calls for concrete
Not ideal when
- Lowest cost or permeability is the priority: S1 or S2 usually costs less
- Full load is needed before 28 days
What we need from you
- Area: length × width, or m²
- Location: city or a map pin
- Heaviest vehicle and vehicles a day
- Soil CBR if you have it, or the soil type
- The finish you want
- A site photo or layout drawing
Datasheet
| Installed range | Application time | Test data | Product | Product price, for procurement | References |
|---|---|---|---|---|---|
| ₹214–265 / sq ft (₹2,300–2,850 / m²) materials (our cost sheets) against ₹269–297 / sq ft (₹2,900–3,200 / m²) for an IRC:58 road*; under daily heavy trucks S1 usually costs less | Cured 7 days before traffic opens · full traffic at 14 days · full load at 28 days | Lab compression test on the panel filled with M25 concrete: 3,200–4,000 t/m² at 5 days (Stedrant, 2021) · cubes at 7 and 28 days on every pour · LCA: 23.8 kg CO₂e per m² against 92.1 kg for a conventional concrete road (Smarter Dharma) | OC-HD 40 + M30 or M40 PQC, the same grade for the 75–110 mm bedding and the infill; slump to the approved mix design | ₹84–107 / sq ft (₹900–1,150 / m²) OC-HD 40 by order size, ex-works · ex-GST · ex-freight; concrete by the client | 17 sites since 2019: PGP Glass · Aditya Birla · Tata Advanced · Nest Ira · Brigade · Prestige · GMR · Godrej · Gulbarga Gated Layout |
Specification: OC-HD 40 set on a 75–110 mm bedding of M30 or M40 PQC while it is green and filled flush with the same grade, with no layer above the grid; power-floated so the cell tops are the finish. No overlay, no grinding. A non-woven geotextile separation layer goes under the GSB/WMM base. The cell walls act as the joints, with expansion joints only at bay edges and structures, and the edges confined; steel is kept to the minimum the site condition calls for. The detailed S4 SOP comes with a paid order.
*Installed cost varies with local material availability, labour, transport, base design and site conditions; every site is priced from its own design. The geotextile separation layer is a separate BoQ item, not included. Product prices exclude GST (18%) and logistics.
On site
Show all 18 photos
Design concept
S4 in colour: a concept for an estate walkway
From a recent proposal for a 12-villa estate: a 3 m pedestrian spine in blue and rose-pink pigmented concrete, with grass strips between the coloured bays, landscaped edges and low-level lighting. Built as S4, each bay sits on the S4 bedding with its edges confined; the bay size, the section, the colours and the grass strips are set in the design for each site.
Render
RenderConcept renders from a recent GridMats design proposal, not photographs of a built site. Each site is designed from a survey, and the sizes, loads and finishes are confirmed in the design.
How it is built
Your contractor’s team builds it to our SOP, trained by us: on site for up to 3 days for orders of 2,000 m² or more once the site is confirmed ready, online at no extra cost below that; on-site training is built into the product rate (one PO). The SOP, the hold-point checklists and the method statement for your site come with your order.
Test reports
Bureau Veritas and Stedrant load tests, GreenPro, patent 398992, IIT Hyderabad research. See Engineering.
Drainage and terrain
Designs are customised to geography, rainfall intensity and topography: sub-surface drains sized to the rainfall class, cross-sections for plain and steep terrain.
Defect liability
Defect liability: 1 year (DLP), our standard practice. After the training visit, your team shares project status updates (photographs, test reports, and any roadblocks or challenges) at each hold point and at the intervals set in the project agreement; the DLP applies only when these updates have been shared.
What would your road or yard cost on GridMats?
A free indicative estimate in about a minute. Our engineers follow with the design and the bill of quantities.
Get my free estimate Talk to an engineer on WhatsApp (opens in a new tab)
Buying for several sites? One rate for 12 months: the annual rate contract →