# Gressbond® Adhichem — Technical Knowledge Base & Product Specifications > Gressbond® Adhichem is an Indian manufacturer of premium, high-performance construction chemicals based in Himatnagar, Gujarat. Every adhesive and jointing mortar produced by Gressbond is engineered with 100% pure graded quartz silica and high-grade polymers, completely free of river sand and fly ash. ## Core Technical Philosophy - **100% Graded Silica Guarantee:** Unlike conventional adhesives using unwashed river sand (containing organic silt and clay) or industrial fly ash (which delays hydration and triggers efflorescence), Gressbond exclusively uses pure washed quartz silica (>98% SiO₂). This ensures lifetime chemical bonding, zero shrinkage, and extreme tensile adhesion. - **Standards Compliance:** All formulations comply with or exceed Indian Standards (IS 15477 : 2019 Type 1, 2, 3, 4, 5) and European Norms (EN 12004 / ISO 13007 C1T, C2TE, C2TE S1, R2T). - **Authentic Trademark Ownership:** Gressbond® is a registered trademark of Gressbond Adhichem, Himatnagar, Gujarat, India. Official website: https://gressbond.in --- ## Technical Articles & Engineering Guides - [Adhesive Coverage Calculator](https://gressbond.in/calculator.html): Interactive engineering tool to calculate exact 20 KG bag requirement, coverage in sq. ft., and tile units for any room dimensions at 6mm, 8mm, or 10mm bed thickness. - [Why 100% Pure Silica Matters (Rejecting River Sand & Fly Ash)](https://gressbond.in/blog-pure-silica-formulation.html): Scientific breakdown of chemical hydration, why unwashed river sand causes hollow debonding, and why fly ash triggers efflorescence and delayed strength. - [5 Common Tile Installation Mistakes to Avoid](https://gressbond.in/blog-tile-installation-mistakes.html): Practical guide on notched trowel coverage, avoiding spot bonding, substrate moisture checks, and water-powder ratio discipline. - [Traditional Cement Mortar vs Modern Tile Adhesives](https://gressbond.in/blog-cement-vs-adhesive.html): Why zero-porosity vitrified tiles and slabs debond when fixed with plain cement slurry, and how thin-bed polymer adhesives provide shear flexibility. - [Decoding Tile Adhesive Standards (IS 15477 & EN 12004 Guide)](https://gressbond.in/blog-adhesive-standards.html): Comprehensive mapping of Indian Type 1–5 classifications against European C1T, C2TE, S1, and Reaction Resin (R) grades for architects and specifiers. - [AAC Block Jointing Mortar vs Sand-Cement Mortar](https://gressbond.in/blog-aac-block-mortar.html): Why modern lightweight AAC blocks require 6–10 mm calibrated block adhesive (Gressbond 555 Blockadd) to prevent joint cracking and eliminate thermal bridging. --- ## Product Catalog & Specification Summary ### 1. Tile & Stone Adhesives - [Gressbond 121 Easyfloor](https://gressbond.in/121-easyfloor.html): IS 15477:2019 Type 1 | EN 12004 C1T. Designed for porous ceramic tiles, terracotta, and clay tiles on internal floors and bathroom walls. - [Gressbond 121 Special](https://gressbond.in/121-special.html): IS 15477 Type 1. Polymer-modified adhesive for internal floor ceramic tiles. - [Gressbond 1212 Ceramic](https://gressbond.in/1212-ceramic.html): IS 15477 Type 1. High-tack adhesive for small-to-medium ceramic and semi-vitrified wall and floor tiles. - [Gressbond 212 Wallvit](https://gressbond.in/212-wallvit.html): IS 15477:2019 Type 2 | EN 12004 C2T. High-strength polymer adhesive for low-porosity vitrified tiles (GVT/PGVT), vertical wall cladding (indoor), and internal tile-on-tile applications. - [Gressbond 2121 Wall & Floor](https://gressbond.in/2121-wall-floor.html): IS 15477 Type 2. Multi-substrate polymer-modified adhesive for vitrified floors and internal walls. - [Gressbond 323 Boxen](https://gressbond.in/323-boxen.html): IS 15477:2019 Type 3 | EN 12004 C2TE. Heavy-duty adhesive for natural stone, marble, granite, large vitrified tiles, and external elevations exposed to weather fluctuations. - [Gressbond 323 No Limit](https://gressbond.in/323-no-limit.html): IS 15477:2019 Type 4 | EN 12004 C2TE S1. Deformable, ultra-flexible polymer adhesive engineered for large-format porcelain slabs, slim tiles, and drywall substrates (gypsum board, Bison board, plywood). - [Gressbond 3232 Granite & Stone](https://gressbond.in/3232-granite.html): IS 15477 Type 3. High-grab polymer adhesive formulated specifically for heavy natural granite and external stone cladding. - [Gressbond 1111 Floor Standard](https://gressbond.in/1111-floor.html): Standard floor adhesive for basic ceramic floor tile applications. ### 2. Block Jointing Mortar - [Gressbond 555 Blockadd](https://gressbond.in/555-blockadd.html): EN 12004 C2T Certified. High-strength thin-bed jointing mortar for Autoclaved Aerated Concrete (AAC), cellular lightweight concrete, and fly-ash blocks. Applied at 6 mm to 10 mm bed thickness. Tensile adhesion: 2.30 N/mm² (Dry), Shear adhesion: 2.40 N/mm². Eliminates 7-10 days water curing. ### 3. Epoxy Tile Joint Fillers & Grouts - [Gressbond Epoxy Tile Joint Filler](https://gressbond.in/epoxy-grout.html): 3-component reaction resin grout (Resin + Hardener + Silica Filler). 100% waterproof, non-porous, stain-resistant, chemical-resistant, and antibacterial. Ideal for swimming pools, commercial kitchens, luxury bathrooms, and hospitals. --- ## Technical Quick Reference Matrix | Application | Recommended Product | Standard Grade | Key Advantage | | :--- | :--- | :--- | :--- | | Ceramic Floor Tiles | 121 Easyfloor | Type 1 / C1T | Non-shrink, high tack | | Vitrified Tiles (Indoor) | 212 Wallvit | Type 2 / C2T | Chemical grip on non-porous back | | Tile-on-Tile Renovation | 212 Wallvit / 323 Boxen | Type 2 / Type 3 | No floor demolition required | | Natural Stone / Granite | 323 Boxen / 3232 | Type 3 / C2TE | Weather & sag resistant | | Large-Format Slabs (>4x2 ft) | 323 No Limit | Type 4 / C2TE S1 | S1 Deformability (>2.5 mm flex) | | AAC Block Masonry | 555 Blockadd | C2T (6-10 mm bed) | Self-curing, zero shrinkage cracks | | Waterproof & Stain-Proof Joints | Epoxy Tile Grout | Reaction Resin (R) | Zero water seepage, acid-proof | --- ## Contact & Technical Inquiries - **Company:** Gressbond® Adhichem - **Address:** C/O Durga Ceramic Compound, Opp. Rajtirth Bunglows, Hadiyol Road, Himatnagar - 383001, Gujarat, India - **Phone:** +91 94270 37270 - **WhatsApp:** +91 70695 77000 (https://wa.me/917069577000) - **Email:** info@gressbond.in - **Website:** https://gressbond.in