Granite and stone fabrication is one of India’s most important export industries — with Rajasthan, Andhra Pradesh and Tamil Nadu supplying polished granite slabs, tiles and monuments to buyers across Gulf countries, Europe, North America and Southeast Asia. The quality of chemicals used in granite block processing, slab preparation and export packaging directly determines whether Indian granite meets international standards — or gets rejected at the destination port.
Orbit Chemicals, Kishangarh manufactures a focused range of specialty epoxy resins, colour converters, netting gels and gel coatings specifically designed for the granite and stone fabrication industry. This guide explains every product, its application, and why correct chemical selection is critical for export-quality granite processing.
The Unique Chemical Challenges of Granite Fabrication
Granite fabrication presents different chemical challenges compared to marble processing. While marble is a calcium carbonate stone (relatively soft, more porous), granite is a silicate mineral (harder, denser, lower natural porosity). This difference affects which chemicals work best:
- Colour variety is extreme — Granite comes in hundreds of natural colours (Black Galaxy, Alaska White, Kashmir Gold, Absolute Black, Verde Green) and the epoxy resin used for repairs, joins and void filling must match each colour precisely — or the defect becomes more visible, not less.
- Pore structure is different — Granite’s lower porosity means vacuum epoxy penetration requires lower viscosity and longer vacuum hold times compared to marble.
- Export netting is mandatory — Virtually all Indian granite exports require fiberglass netting backing on slabs — and the netting adhesive (netting epoxy gel) must provide reliable adhesion through months of ocean freight in humid containers.
- Block voids are larger — Natural granite blocks often contain larger void pockets and structural flaws than marble — requiring gel coat putty systems rather than thin crack fillers.
Stage 1: Granite Block Vacuum Epoxy Treatment
While granite is denser than marble, many commercially quarried granite varieties — particularly from Rajasthan and Andhra Pradesh — contain natural micro-fractures and pore networks that can cause slab breakage during cutting and surface defects after polishing. Block vacuum impregnation with low-viscosity epoxy resin addresses these weaknesses before the cutting process begins.
Recommended Vacuum Epoxy for Granite Blocks
Orbit Vacumme Epoxy Bond UV is the recommended product for granite block vacuum impregnation. Key specifications for granite use:
- Viscosity: 180–220 cP (ultra-low for granite pore penetration)
- UV stability: Prevents yellowing in light-coloured granite varieties
- Compatible with granite silicate chemistry (tested adhesion to quartz and feldspar surfaces)
- Pot life: 90–120 minutes — adequate for full vacuum cycle completion
- Consumption: 4–10 kg per cubic meter of granite block (lower than marble due to lower porosity)
For dark granite varieties (Black Galaxy, Absolute Black), UV stability is less critical since colour change is not visible on dark stone. However, we still recommend UV-grade vacuum epoxy for consistency across mixed production lines.
Stage 2: Colour-Matched Epoxy Resin — The Most Critical Step in Granite Processing
This is where granite fabrication chemistry gets complex — and where Orbit Chemicals’ product range provides the greatest value. After cutting, granite slabs reveal natural voids, pits, fissures and structural defects that must be filled. The filled area must match the surrounding stone colour as closely as possible. A visible repair in export granite causes rejection — or significantly reduces the price the exporter receives.
The Alaska Granite Epoxy Series
Orbit Chemicals’ Alaska Granite epoxy series is specifically developed for granite colour matching in India’s stone fabrication industry:
- Alaska Granit ORB Dark 1135 Orbit Epoxy — Dark-toned epoxy formulated to match the natural colour range of dark granite varieties — Black Galaxy, Absolute Black, Steel Grey. The formulation includes dark pigmentation that blends naturally with granite’s dark mineral composition.
- Alaska Granit Export Quality — White Ultra (New Invention) — For light and white granite varieties requiring export-grade UV-stable epoxy repairs. New generation maximum clarity with zero yellowing — meeting international export buyer specifications.
All Colour Epoxy Converter — Custom Shade Matching
All Colour Epoxy / Converter for Granite is Orbit Chemicals’ complete pigment system for custom colour matching epoxy and polyester resins to any granite shade in your production. Available in the full range of granite tones used in the Indian stone market — from Kashmir Gold and Verde Green to Baltic Brown and Blue Pearl variants.
How to use the colour converter system:
- Select the appropriate base resin (clear epoxy or white polyester)
- Add colour converter pigment in the recommended dosing ratio (typically 2–8% of resin weight)
- Mix thoroughly to achieve uniform colour dispersion
- Test on a sample of the granite to verify colour match before applying to the slab
- Apply to void or repair area, allow cure, then polish or grind to blend
Pro Tip for Granite Fabricators: Create a colour library for each granite variety you regularly process — record the exact colour converter dosing and base resin combination that gives the best match. This eliminates trial-and-error for repeat orders of the same granite variety.
Stage 3: Block Paste & Gel Coating — Filling Large Voids
Granite blocks frequently contain natural pockets, hollows and structural voids that are too large for thin crack-filling epoxy resins. These require a thicker, paste-consistency filler — our Orbit Gel Coating (Block Putty) and Block Paste All Colours range.
Orbit Gel Coating — Block Putty
A thick-body, thixotropic epoxy putty for filling voids up to 15 mm in granite blocks and slabs. Key features:
- Non-sag consistency — stays in place on vertical and overhead surfaces
- Excellent adhesion to granite silicate surfaces
- Low shrinkage on cure — void fill remains flush with stone surface
- Can be sanded, ground and polished after cure
- Compatible with Orbit Colour Converter for granite shade matching
Block Paste All Colours
Pre-pigmented, ready-to-use coloured block paste for routine surface pore and void filling in granite production. Available in all standard granite colour families — eliminates the need to mix colour converter for routine production. Particularly efficient for high-volume granite slab processing lines where speed of application is important.
Stage 4: Export Netting — Fiberglass Mesh & Netting Epoxy Gel
Fiberglass netting on the back of granite slabs is mandatory for virtually all export markets. The netting prevents breakage during packing, container loading, ocean freight and destination handling — and is specifically required by major importing markets including UAE, Saudi Arabia, Italy, Spain and USA.
Fiberglass Mesh Selection for Granite Export
- Fiber Glass Woven Fabric Mesh 80 Mesh — Standard for granite export netting. Provides structural support with lower fabric weight.
- Fiber Glass Woven Fabric Mesh 145 Mesh — Finer mesh for premium granite and Italian marble export. More complete coverage of slab back surface.
- Fiber Glass Woven Fabric 400 GSM / 600 GSM — Heavy woven fabric for structural reinforcement in thick granite tiles, large format slabs and composite stone panels.
Netting Epoxy Gel — The Critical Adhesive
The performance of your granite netting depends entirely on the quality of the netting adhesive. Orbit Chemicals supplies two netting epoxy products for granite export applications:
- Netting Epoxy Gel (Export Granite and Marble Netting) — High-viscosity, thixotropic epoxy gel for applying fiberglass mesh to granite slab backs. Provides maximum adhesion, resists delamination under humidity and temperature fluctuations in shipping containers.
- Orbit Netting Epoxy Gel — Standard netting gel for domestic and regular export applications. Good adhesion to granite surfaces with gel consistency for clean application.
Common problem: netting delamination during transit is almost always caused by using the wrong adhesive (standard epoxy resin instead of purpose-formulated netting gel) or insufficient cure time before packing. Our netting epoxy gel products are specifically formulated to avoid both these failure modes.
Stage 5: Vacuum Accessories for Granite Block Processing
For granite factories running vacuum impregnation systems, Orbit Chemicals also supplies a complete range of Vacuum Accessories — All Items including vacuum bags, sealing tape, breather fabric, peel ply and valve fittings. Having all components from a single reliable supplier ensures compatibility and consistent process performance.
Complete Granite Fabrication Chemical Reference Table
| Processing Stage | Product | Purpose |
|---|---|---|
| Block Vacuum Treatment | Orbit Vacumme Epoxy Bond UV | Internal block reinforcement under vacuum |
| Dark Granite Repair | Alaska Granit ORB Dark 1135 | Colour-matched epoxy for dark granite varieties |
| Light/White Granite (Export) | Alaska Export Quality White Ultra | UV-stable export-grade epoxy for white granite |
| Custom Colour Matching | All Colour Epoxy / Converter | Pigment system for any granite shade |
| Large Void Filling | Orbit Gel Coating (Block Putty) | Thick-body epoxy putty for pockets and hollows |
| Routine Surface Filling | Block Paste All Colours | Pre-pigmented paste for surface pores |
| Export Netting (Standard) | Fiber Glass Woven Mesh 80 Mesh | Fiberglass netting for granite export |
| Export Netting (Premium) | Fiber Glass Woven Mesh 145 Mesh | Fine mesh netting for premium export granite |
| Netting Adhesive | Netting Epoxy Gel (Export) | Bonding fiberglass mesh to granite slab back |
| Heavy Reinforcement | Fiberglass Woven Fabric 400/600 GSM | Structural backing for thick granite panels |
| Vacuum System | Vacuum Accessories — All Items | Complete vacuum system accessories |
Why Granite Fabricators Trust Orbit Chemicals
Granite fabricators across India — from Rajasthan to Andhra Pradesh — rely on Orbit Chemicals because we understand the specific demands of granite processing at both the chemistry and application level. Key reasons:
- Alaska Granite Series — Our colour-matched Alaska Granite epoxy range is specifically developed for India’s most important granite export varieties
- Export-proven products — Our netting epoxy gel has been validated by granite exporters supplying to UAE, Saudi Arabia, Italy and Spain
- Complete system supply — From vacuum epoxy to netting gel, colour converter to vacuum accessories — one reliable supplier for all your granite chemical needs
- Bulk B2B pricing — Direct manufacturer pricing from Kishangarh with pan-India delivery
- Technical support — Application guidance and troubleshooting from our granite-industry-experienced technical team
Contact Orbit Chemicals for Granite Industry Chemical Supply
Get bulk pricing, grade selection guidance and delivery schedule for your granite fabrication operation. Our technical team will recommend the right colour converter dosing for your granite variety and advise on netting application best practices for your export markets.
📞 Call / WhatsApp: +91 XXXXX XXXXX
✉️ Email: info@orbitchemicals.in
📍 Location: Kishangarh, Ajmer, Rajasthan — 305801, India
🌐 Products: Explore Epoxy Resin Products →
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