GRC Jali & Screens
A GRC jali is judged at its perforations. Hand-formed molds drift: apertures widen, edges soften, and the pattern on the last panel no longer matches the first. MIRU machines the pattern into the mold on CNC, working from a 3D model rebuilt from your issued drawings — so every aperture lands where the drawing says it should, on every panel.
The material is no-polymer spray-up GFRC with AR-glass fibre from Nippon Electric Glass and Owens Corning. It casts thin relative to precast and carries fine webs and sharp reveals that heavier materials cannot — screens that shade, ventilate and enclose without loading the structure.
We supply screens for facades, compound walls, partitions and ventilation openings, dispatched from Kota in tracked, itemised lots with installer drawings. DRDO Gwalior's perforated screen walls ran this way: repeating panel sizes, one machined mold set per family, every panel identical to the next.
What we deliver
CNC-machined jali molds
The pattern is cut into the mold by machine, not shaped by hand. Aperture geometry, web widths and edge chamfers come off the 3D model exactly, and repetition does not degrade them.
Perforated facade screens
Full-height screen walls, spandrel screens and shading layers, fixed back to structure or a secondary frame. Your consultant's fixing philosophy is detailed in our shop drawings before molds are made.
GFRC jali in no-polymer spray-up
AR-glass fibre from Nippon Electric Glass and Owens Corning in a sprayed matrix. Thin sections hold fine webs without cracking, and panels stay light enough to fix to steel or blockwork.
Compound walls and partitions
Freestanding boundary runs and interior partition screens use the same machined patterns as facade work; a mold set made for one scope reuses across the others.
Ventilation screens
Open-area screens for plant rooms, stair cores and service floors, with aperture geometry taken from your drawing rather than approximated on the shop floor.
Repeating panel families
We group your jali layout into element families, each with a dedicated mold set. One family, one mold, many identical panels — the arithmetic that keeps a screen wall consistent.
Tested against acceptance targets
Flexural tests to ASTM C947 in our in-house lab, against internal targets of MOR 12 N/mm² and LOP 6 N/mm². Results are logged against the mix batch that produced the panel.
Tracked, itemised dispatch
A jali manufacturer in India with its factory at Kota, Rajasthan. Every panel leaves in a logged lot with a dispatch challan and installer drawings keyed to your grid.
From your drawings to installed elements
Your issued DWG or GFC set is rebuilt as an exact 3D model: jali pattern, panel joints, fixing positions and edge conditions all resolved digitally before any mold work. Panels are grouped into families and each family gets its own mold set. Because jali profiles are perforated and tight, those molds are CNC-machined rather than hand-formed — the pattern in the mold is the pattern in the model.
Casting is no-polymer spray-up with AR-glass fibre. Every session is logged in the digital production system — mix batch, mold identity, QC checks — and flexural coupons run through the in-house lab to ASTM C947. Finished screens dispatch in tracked, itemised lots with installer drawings, so site knows which panel lands on which grid line.
Built at MIRU
The factory, measured.
from our production system, July 2026Questions
How do I specify a GRC jali for my project?
Issue your drawings — pattern geometry, panel sizes, fixing intent — and we rebuild them as a 3D model. Specification typically references GFRC tested to ASTM C947; our internal acceptance targets are MOR 12 N/mm² and LOP 6 N/mm², verified by flexural tests in our own lab. We return shop drawings with panel families, joints and fixings resolved for your approval before any mold is made.
How do jali panels fix to the structure?
Fixing follows your structural or facade consultant's philosophy. Screens fix back to RCC, steel or blockwork through cast-in anchors or a secondary frame, with joints sized for movement. Because every panel is modelled before casting, fixing positions are cast in, not drilled after. The installer drawings dispatched with each lot show panel identity, orientation and fixing points against your grid.
What patterns and finishes are possible?
The pattern is whatever your drawing shows — geometric, floral, script-derived or parametric — because it is machined into the mold from the 3D model rather than shaped by hand. Finishes run from smooth off-mold surfaces to light textures, with pigment mixed through the material rather than applied to it. Fine webs and sharp arrises survive long runs because a machined mold does not wear the way a hand-formed one does.
Why GFRC instead of stone, terracotta or precast for a jali?
Stone jali is carved piece by piece, so panels vary and thin webs break in handling. Precast cannot hold fine perforations without going heavy. GFRC casts thin relative to precast, takes sharp aperture edges from a machined mold, and repeats identically across a facade. It also puts far less dead load on the structure, which matters when a screen runs several storeys.
How does supply work for sites outside Rajasthan?
All production runs at our Kota factory; supply is pan-India. Panels dispatch in tracked, itemised lots, each tied to a challan and to the digital record of its casting session and mix batch. Installer drawings travel with the lot, sequenced against your installation programme. Across live projects we have dispatched 84,000+ sq ft this way.
Have you built large jali screen walls before?
Yes. DRDO Gwalior's perforated GFRC jali screen walls run in repeating panel sizes, with the pattern machined into each mold so perforations came out sharp and panels stayed identical across the run. Across all live projects we currently run 220 element families, each with its own mold set, with every casting session logged in the production system.
Have a facade on the drawing board?
Send the drawings. We reply with an element breakdown, a mold plan and a production timeline.
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