MARMOFLEX-GROUT

MARMOFLEX-GROUT is a two-component, high-performance mineral grout enhanced with an advanced polymer latex resin additive to deliver superior flexibility, bond adhesion, and water resistance. It is specially engineered for grouting wide tile and natural stone joints ranging from 2mm to 15mm in width. Designed for both interior and exterior installations, MARMOFLEX-GROUT provides outstanding color consistency, UV stability, crack bridging, and complete zero-shrinkage performance. It withstands thermal expansion, building vibration, and moisture ingress, making it the ideal choice for residential and commercial flooring, walls, facades, and wet areas like swimming pools and bathrooms.

Key Highlights

• Latex-Enhanced Flexibility: Polymer latex liquid (Component B) provides high elasticity and thermal movement accommodation, preventing joint cracking and dislodgement.
• Wide Joint Capability (2mm to 15mm): Formulated with graded mineral aggregates that pack densely into joints from 2mm up to 15mm without slumping or cracking.
• Zero Shrinkage: Chemically engineered for zero shrinkage during hydration and curing, ensuring flush, durable joints.
• High Mechanical Strength: Delivers a compressive strength $ge$ 15 N/mm² and flexural strength $ge$ 3 N/mm² after 28 days.
• Superior Water & Chemical Resistance: Very low water absorption ($le$ 5% after 30 minutes) and high resistance to household cleaning detergents and mild acids.
• UV Stable & Colorfast: Resists discoloration, powdering, and solar fading across external facades and open patios.
• Indoor & Outdoor Versatility: Suitable for floors and walls in dry zones, wet rooms, balconies, terraces, and commercial spaces.

Technical Specifications

Parameter / Property	Specification / Value
Product Name	MARMOFLEX-GROUT
Product Type	Two-component latex-modified mineral tile & stone grout
Component A (Powder)	Graded mineral fillers and special performance additives (4 Kg bag)
Component B (Liquid)	Polymer latex resin additive (1 Kg container)
Total Kit Packaging	5 Kg Kit (4 Kg Powder Bag + 1 Kg Latex Container)
Mixing Ratio	4 Parts Powder : 1 Part Liquid by weight
Grout Joint Width	Suitable for joints from 2mm to 15mm
Mixed Consistency	Smooth, creamy, workable paste
Wet Density (Mixed)	1.9 – 2.1 g/cm³
Pot Life / Working Time	Approximately 45 minutes at 20°C
Application Temperature	+5°C to +35°C
Water Absorption	$le$ 5% after 30 minutes
Compressive Strength	$ge$ 15 N/mm² (after 28 days)
Flexural Strength	$ge$ 3 N/mm² (after 28 days)
Shrinkage	No shrinkage
Initial Setting Time	3 – 4 hours
Initial Cleaning Window	15 – 30 minutes post-application
Final Setting / Foot Traffic	24 hours (light foot traffic)
Full Mechanical Cure	7 days
Color Availability	Wide spectrum of colors (custom shades available on request)
Shelf Life	12 months in unopened, original packaging
Storage Conditions	Store in a cool, dry place between 10°C and 30°C

Application & Handling

1. Surface Preparation Ensure tile adhesive beneath the tiles is fully cured before grouting commences (never grout over wet or uncured adhesive beds). Rake out all joints to ensure they are clean, dry, and free of dust, standing water, loose particles, tile spacers, and excess adhesive residue. Lightly moisten joint edges with clean water using a damp sponge prior to grouting, avoiding any water puddles in the joints.

2. Mixing Procedure Pour the entire Component B (Polymer Latex, 1 Kg) into a clean mixing pail. Gradually add Component A (Mineral Powder, 4 Kg) while stirring continuously. Mix for 3 to 5 minutes using a low-speed mechanical mixer (approx. 300–400 RPM) until a completely smooth, lump-free, creamy homogeneous paste is obtained. Do NOT add additional water or solvents to the mix.

3. Application Method Apply MARMOFLEX-GROUT diagonally across the joint lines using a firm rubber grout float or rubber trowel. Press the grout firmly into the joints to ensure complete, dense compaction from top to bottom without voids or air pockets. Remove excess grout from the tile faces by holding the float at a 90-degree angle and drawing it diagonally across the tiles.

4. Cleaning & Finishing Allow the grout to take its initial set (approximately 15 to 30 minutes, depending on ambient temperature and substrate absorption). Clean the tile surface using a lightly dampened cellulose sponge, working in gentle circular motions to tool the joints smoothly. Rinse the sponge frequently in clean water and wring it out thoroughly; avoid excess water to prevent pigment washout or efflorescence. Buff away any residual dried haze on the tile face with a clean, dry microfiber cloth once the grout has firmed up.

5. Curing Schedule Initial setting occurs within 3 to 4 hours. Protect the grouted surface from water, moisture, and foot traffic for a minimum of 24 hours. Light pedestrian foot traffic is permitted after 24 hours. Allow 7 full days of curing to attain maximum compressive strength, flexural resilience, and chemical resistance.

Do’s

• Ensure all joints are clean, structurally sound, and free from adhesive residue.
• Use a low-speed mechanical mixer to avoid trapping air bubbles in the paste.
• Work within the 45-minute working time / pot life.
• Clean tile surfaces during the initial 15–30 minute setting window with a damp sponge.
• Allow at least 24 hours before light foot traffic and 7 days before heavy traffic or chemical cleaning.
• Dry-blend powder bags from different batch numbers together before mixing with latex to prevent subtle shade variations.

Don’ts

• Do NOT add water, cement, or thinners to the mix.
• Do NOT remix or re-temper grout that has begun to set or stiffen; discard expired material.
• Do NOT apply over uncured adhesive beds or wet joints.
• Do NOT apply in temperatures below 5°C or exceeding 35°C.
• Do NOT use for metal joints or structural movement/expansion joints (use dedicated elastomeric sealants).

Storage & Safety

Storage: Store sealed in original packaging in dry, covered conditions between 10°C and 30°C. Protect from dampness, direct sun, and frost.

Handling: Ensure good ventilation in enclosed rooms. In case of skin contact, wash thoroughly with soap and water; for eye contact, rinse immediately with clean water and consult a physician.

First aid:

• Disposal: Dispose of remnants and packaging in accordance with local environmental regulations.

Frequently Asked Questions

What is MARMOFLEX-GROUT?
MARMOFLEX-GROUT is a premium two-component mineral tile and stone grout modified with a specialized polymer latex additive for enhanced flexibility, bond strength, and water resistance.

What joint widths can MARMOFLEX-GROUT fill?
It is engineered specifically for joints ranging from 2mm to 15mm in width, making it ideal for both standard and wide-joint tile/stone installations.

What is the mixing ratio of MARMOFLEX-GROUT?
The mixing ratio is 4 parts powder to 1 part liquid latex by weight (Component A: 4 Kg powder bag to Component B: 1 Kg latex container).

Should water be added to the mix?
No. Never add water to MARMOFLEX-GROUT. The liquid latex component provides the exact liquid volume required for hydration, polymer bonding, and mechanical strength.

Why is the latex additive important?
The polymer latex replaces standard mixing water, giving the cured grout superior flexibility, crack resistance, enhanced bond adhesion to tile edges, and substantially lower water absorption.

What is the working time (pot life) of the mixed grout?
The mixed grout has an open working time of approximately 45 minutes at 20°C.

How soon after application should tile cleaning begin?
Initial cleaning should begin approximately 15 to 30 minutes after application, as soon as the grout firming starts, using a damp sponge in circular motions.

Can MARMOFLEX-GROUT be used outdoors?
Yes. It features high UV stability, thermal flexibility, and weather resistance, making it suitable for outdoor facades, balconies, terraces, and walkways.

Is MARMOFLEX-GROUT suitable for wet areas like bathrooms and swimming pools?
Yes. With water absorption $le$ 5%, it performs exceptionally well in showers, bathrooms, kitchens, and wet areas. Applying a sealer like Marmo Impregnator further elevates protection.

Does MARMOFLEX-GROUT shrink or crack during drying?
No. It is formulated to exhibit zero shrinkage, preventing hairline cracking, depression, or joint separation.

What compressive strength does MARMOFLEX-GROUT achieve?
It develops a high compressive strength of $ge$ 15 N/mm² and flexural strength of $ge$ 3 N/mm² after 28 days of curing.

Can MARMOFLEX-GROUT be applied on expansion joints?
No. It is not suitable for metal or flexible structural expansion joints, which require elastomeric PU or silicone movement sealants.

When can the floor be opened to foot traffic?
Light foot traffic is allowed after 24 hours of curing. Full mechanical strength is achieved after 7 days.

What tools are needed to apply MARMOFLEX-GROUT?
You will need a low-speed mechanical mixer, clean mixing bucket, rubber grout float, cellulose sponge, and microfiber polishing cloths.

Can I re-temper the grout with latex or water if it starts to harden?
No. Never re-temper or add liquid to grout that has started setting. Discard any mix that exceeds its 45-minute pot life.

How do I prevent shade variation across large tiled areas?
Dry-blend powder bags from different manufacturing lots before mixing with latex, and maintain uniform water-wringing when wiping with sponges.

What is the density of the mixed grout?
The wet density of the mixed grout paste is between 1.9 and 2.1 g/cm³.

What packaging sizes are available?
It is supplied as a 5 Kg kit containing a 4 Kg bag of powder (Component A) and a 1 Kg container of latex (Component B).

What is the shelf life and proper storage condition?
The product has a shelf life of 12 months in unopened original packaging stored in a dry, cool location between 10°C and 30°C.