GRC Chennai
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GRC Chennai
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GRC domes for mosques, temples and buildings

An RCC dome needs curved shuttering built at height, and its shape is only as good as that shuttering. A GRC dome is cast in segments against moulds made to the exact profile, then bolted together on site over a light frame.

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GRC domes at a glance

Sizes
From small chhatris to large domes. Large domes are cast in segments sized for the truck and for lifting.
Profiles
Onion, hemispherical, ribbed, pointed, or drawn by your architect.
Finishes
Natural cement, pigment, exterior paint, or prepared for gold and metallic coatings.
Fixing
Segments bolted to each other and to a steel or concrete ring and frame, designed with your structural engineer.
Priced by
Per dome, by diameter, profile, ornament and finish.
To quote, send us
Diameter and height, the profile (drawing or photo), what the dome sits on, and the site location.

It keeps its curve and its ornament, adds far less weight to the slab below, and can be finished as plaster, stone or painted metal.

Domes in Chennai and Tamil Nadu

  • Madras is where the Indo-Saracenic style began, and its onion domes and chhatris still crown the city's palaces, stations and colleges. GRC lets a new building or an extension carry the same roofline.
  • Mosques, churches and temples across Tamil Nadu use GRC domes where a lighter roof matters, such as adding a dome on top of an existing building.
  • Kalyana mandapams and hotels use domes and chhatris to mark an entrance from the road.

Dome styles we make

Four of the styles we cast most. Every one is made to your size, and the pattern or profile can be changed to your drawing.

  • Onion dome

    The bulbous Indo-Saracenic profile with ribs and a lotus band, for mosques, halls and entrances.

  • Hemispherical dome

    A calm round profile on a drum with arched openings, for churches and public buildings.

  • Ribbed dome

    A taller, pointed profile with close ribs and a lotus band at the base.

  • Chhatri

    A small dome on four posts under a projecting eave: roof pavilions for villas, hotels and wedding halls.

Send us the style you want

Design choices for domes

Profile
Onion, hemispherical, ribbed, fluted, pointed, or a profile drawn by your architect.
Size
From small chhatris to large domes. Large domes are divided into segments sized for the truck and for lifting.
Ornament
Lotus bands, ribs, panels, a kalash finial and lettering, cast into the segments or fixed on as separate pieces.
Finish
Natural cement, pigment, exterior paint, or prepared for gold and metallic coatings.

How domes are made and fixed

  1. Profile set-out

    We draw the dome's profile full size and divide it into segments sized for transport and lifting.

  2. Master and segment moulds

    A master is built to the profile and segment moulds taken from it, with flanges for bolting.

  3. Casting the segments

    Segments are cast with their ribs, bands and ornament in place, then cured and finished.

  4. Trial fit

    The dome is assembled at our unit to check the fit before it travels.

  5. Lifting and bolting

    On site, the segments are lifted onto the ring and bolted to each other and to the frame.

  6. Joints and finial

    Joints are filled and finished so the dome reads as one surface; the finial goes on last.

Projects with domes

Completed work by RJ Interiors & Constructions, the team behind GRC Chennai.

See them all on the projects page

Questions about GRC domes

Why choose GRC over an RCC dome?

A GRC dome is much lighter for the same size, needs no shuttering at height and keeps an exact profile. That usually means a smaller support structure and fewer days of work at roof level.

Can a GRC dome go on an existing building?

Often, yes, because it is light. Your structural engineer should confirm the slab or beams can take the dome and its frame; we provide weights and fixing details for that check.

Can you add a kalash and a lotus band?

Yes. Finials, lotus petals, ribs and bands are cast as part of the dome or as separate pieces fixed on top.

How long does a GRC dome last outdoors?

With no steel inside to rust and well-sealed joints, a GRC dome lasts for decades. Paint and metallic finishes are renewed from time to time.

Can a dome be finished in gold?

Yes. The surface can be prepared for metallic paint or gold finishes. Tell us the look you want and we'll suggest the finish.

Often used with domes

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Get a quotation for domes

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