Ducon Tile Joint Filler (Cementitious)

Cementitious Tile Joint Filler

Manufactured by Ducon Construction Chemicals Industries Ltd. at our Gazipur production facility, Ducon Tile Joint Filler is a polymer-modified cementitious grout formulated to seal the joints between wall and floor tiles. It bonds tightly to the tile edge, holds out water, and resists the fungal staining that turns ordinary cement joints black within a season. Compressive strength is 20 N/mm² or higher, water absorption sits below 0.1%, and shrinkage stays under 0.1%, figures that matter to specifiers and not just to the finish. Supplied in 1 kg pouches for retail counters and in project quantities for contractors, it sits alongside the rest of our construction chemicals range, with tile joint filler price in Bangladesh quoted factory-direct from our own plant.

Pack Size:

1 kg laminated pouch

Cementitious Tile Joint Filler Price:

Approx. 300 -350 Taka Per 1 kg Pack

Consumption:

Approx. 1 kg per 13 running metres of 3 mm joint

What is Ducon Tile Joint Filler?

On most Bangladeshi sites, tile joints are still packed with white cement. It is cheap, it is available at every hardware shop, and it fails predictably. Within six to twelve months in a bathroom or kitchen, the joint shrinks, hairline cracks open along the tile edge, and water begins working its way underneath. The tell-tale black line follows soon after. That is not dirt sitting on the surface. It is mould feeding on moisture trapped inside a porous joint, the kind of persistent indoor dampness the World Health Organization links to indoor air quality and respiratory complaints. By the time a homeowner notices, water has usually already reached the screed.

Ducon Tile Joint Filler was developed to close that gap. Where a conventional cement-and-sand grout simply fills the gap, this one has polymers blended into the powder, so the hardened joint behaves differently: it grips the glazed tile edge instead of merely sitting between two tiles, it absorbs almost no water, and it does not shrink away as it cures. Laboratory work on water absorption in polymer-modified cement mortars records the same behaviour: capillary uptake drops sharply once a polymer is dispersed through the matrix. Silica fillers give the joint its abrasion resistance, and inorganic colour pigments hold their shade under UV, which is why the product performs on balconies and terraces as well as it does indoors. For anyone searching for a genuinely waterproof tile joint filler rather than a cosmetic one, the distinction is in the water absorption figure, and ours is measured under ASTM D570 at less than 0.1%. A joint is only ever as sound as the bed beneath it, so specify it over a proper Ducon Tiles Bond tile adhesive rather than a sand-cement dab.

Application Process

1. Surface Preparation:

Joints must be clean, dry, and free of dust, grease, adhesive residue, and loose particles before anything is mixed. Pull out all tile spacers first. If you are re-grouting an existing floor, rake the old material out to a depth of at least 2 to 3 mm and vacuum the joint. New grout laid over failed grout will fail in the same place. Substrate moisture content should be 4% or lower.

2. Mixing:

Pour the recommended quantity of clean water into a clean container first, then add the powder gradually while mixing with a slow-speed mixer. Reversing that order traps dry powder at the bottom and leaves lumps you will not notice until they are in the joint. Mix to a uniform, lump-free consistency, let the material stand for two to three minutes, then remix briefly before use.

3. Application:

Work the filler into the joints with a rubber grout float or a suitable grout applicator, pressing firmly so the joint is fully compacted from the bottom up. Voids left mid-depth are where water eventually collects. Fill in manageable sections rather than spreading over a large area at once. Working time is roughly 20 to 25 minutes at 25°C, and it shortens in hot weather.

4. Cleaning:

Remove excess material by drawing the float diagonally across the joints. Moving parallel drags the fresh grout back out. Once the surface is touch-dry, clean the tile face with a damp sponge and fresh water, rinsing the sponge often. Leaving haze to harden overnight makes it far harder to remove later without scouring the joint.

5. Curing:

Protect the finished area from water, dust, and traffic while it cures. The joint takes light foot traffic after about 24 hours, heavy traffic after 3 days, and reaches full cure at 7 days. Chemical exposure should wait the full 7 days. This is the step most often shortened on site, and shortening it is the most common reason an otherwise correctly installed joint underperforms.

6. Site Conditions & Precautions:

Apply between 10°C and 35°C, keeping the substrate at least 3°C above the dew point. Avoid contact with eyes and skin, wear gloves and eye protection, and keep the product away from children. Store unopened pouches in dry conditions between +5°C and +35°C, out of direct sunlight. Shelf life is 12 months from the date of manufacture. Refer to the SDS for full handling information.

Properties: Cementitious Tile Joint Filler

Key Features:

Excellent adhesion to tile edges, including glazed ceramic and low-porosity porcelain
Water-resistant with low permeability; water absorption below 0.1% (ASTM D570)
Low shrinkage performance, under 0.1% (ASTM D955), so joints do not pull away as they cure
Compressive strength of 20 N/mm² or higher (ASTM C579)
Tensile strength above 10 N/mm² at 7 days (BS 6319)
Abrasion-resistant, giving a durable finish in circulation areas
Smooth, dense surface that cleans easily and does not trap grime
Resistant to fungal and mould growth in permanently damp conditions
Solvent free, with no VOC content
Service temperature up to +50°C continuous and +80°C short-term
Available in multiple colour options to match tile shades

Benefits: Ducon Tile Joint Filler

For the homeowner or building owner: the joint keeps its colour and stays sealed, so the floor does not need re-grouting every couple of years. Bathrooms stay hygienic because there is no open pore structure for mould to colonise. Anyone who has searched for the best grout for bathroom floor Bangladesh after a leak into the flat below understands that the real cost was never the grout, it was the ceiling repair downstairs. Judged on water absorption, mould resistance and colour retention, this is the best tile grout for bathroom use in Bangladesh conditions that we manufacture in the cementitious range.

For the specifier and project manager: published test data against ASTM and BS methods means the product can be written into a specification and verified, rather than accepted on a supplier description. Consultants approving finishes for hospitals, laboratories, and hotel wet areas generally need that documentation before sign-off.

For dealers and distributors: the 1 kg laminated pouch moves easily through retail counters, while project quantities are dispatched factory-direct. Tile gap filler bulk cost is quoted separately from single-pack retail pricing, so a dealer serving both a walk-in customer and a 400-unit apartment project is working from the right number for each. Ask us for the current tile gap filler price for the 1 kg retail pack alongside your project quotation.

Ducon Tile Joint Filler : Usages Area

Ceramic and porcelain tile joints, on both walls and floors
Bathrooms, kitchens, and utility areas where joints stay wet for long periods
Swimming pools, pool surrounds, and other permanently wet zones
Hospitals, clinics, and laboratories where joints must stay hygienic and cleanable
Balconies, terraces, and external tiled surfaces exposed to rain and sun
Residential apartments, commercial interiors, and industrial buildings
Indoor and outdoor applications across new build and refurbishment work

Applications & Use Cases

Residential Bathrooms

The highest-volume use, and the one that fails most often. Joints here face daily water contact, soap residue, and poor ventilation. A water-resistant, mould-resistant joint stops seepage into the screed and prevents the black staining that plain cement develops within months.

Kitchens & Utility Areas

Kitchen joints deal with grease, hot water, and frequent scrubbing rather than standing water. The dense, abrasion-resistant surface tolerates repeated cleaning without eroding, which is what makes it the practical answer for anyone weighing which grout is best for kitchen tiles.

Apartment & Housing Projects

Developers finishing hundreds of units need a finish that survives the defect liability period without callbacks. Low shrinkage and consistent batch quality reduce the number of units returning with cracked or discoloured joints after handover.

Hospitals & Laboratories

Wet-cleaned floors and walls in clinical areas need joints that resist fungal growth and do not absorb spills. The smooth, low-permeability surface supports regular disinfection routines without breaking down.

Hotels & Commercial Interiors

Lobbies, guest bathrooms, and back-of-house wet areas are judged on appearance. UV-stable inorganic pigments keep joint colour uniform across a floor, and the joint cleans back to its original shade rather than greying over time.

Swimming Pools & Water Features

Permanent immersion is the hardest test a cement-based joint faces. Water absorption below 0.1% and strong edge adhesion keep the joint intact where continuous water contact would wash out an unmodified cement mix.

Balconies & External Tiling

Outdoor joints cycle between heavy monsoon wetting and direct sun. The combination of low water absorption and service tolerance to +50°C continuous exposure suits Bangladesh climate rather than a temperate one.

Shopping Malls & High-Traffic Floors

Circulation areas grind joints down before they wear the tile. Abrasion resistance and 20 N/mm² compressive strength keep the joint level with the tile surface instead of recessing into a dirt trap.

Re-grouting & Refurbishment

Existing floors with failed white-cement joints can be raked out and refilled without lifting a single tile. It is the fastest way to stop a leak and restore appearance in an occupied building, and far cheaper than re-tiling.

Quality Assurance & Compliance

ISO 9001:2015

Quality Certified

TDS & MSDS

Available on request

Laboratory Tested

ASTM & BS test methods

Bulk & Export

Factory-direct dispatch

Frequently Asked Questions

What is tile joint filler used for?

Tile joint filler is a cement-based powder used to seal the narrow gaps between laid tiles. Without it, water, dirt, and bacteria enter the gap, loosen the tiles from below, and eventually leak into the floor slab. Ducon Tile Joint Filler seals the joint against moisture, resists mould, and holds its colour, so the floor stays sound and looks the same years after installation. A general overview of how grout works between tiles is a useful starting point if you are new to the material.

What is the tile joint filler price in Bangladesh?

Ducon Tile Joint Filler is supplied in 1 kg laminated pouches, and the tile joint filler cost in Bangladesh depends on order quantity and colour selection. Project and dealer rates differ from single-pack retail pricing, so bulk buyers should request a direct quotation. Call +8801844652497, email info@duconchemical.com for current rates, or see the Products Price page and the Ducon Tile Joint Filler (Cementitious) product page.

Water is leaking through my bathroom tile gaps. What should I use?

Use a waterproof cementitious tile joint filler, not plain cement. Leaks through tile joints almost always mean the original joint material has cracked or washed out. Rake the old material out to 2 to 3 mm depth, let the joint dry fully, then refill with Ducon Tile Joint Filler, which has water absorption below 0.1% and stops seepage into the slab beneath.

Can I use white cement instead of tile grout?

White cement is not recommended for tile joints. It contains no polymers or water-resistant additives, so it shrinks as it dries, cracks along the tile edge, and turns black in wet areas within a few months. A polymer-modified filler bonds to the tile edge and blocks moisture, which is why it lasts several times longer and works out cheaper across the life of the floor.

Why do tile joints crack and turn black?

Cracking comes from shrinkage. Ordinary cement loses volume as it dries and pulls away from the tile edge, opening a hairline gap. Blackening is mould growing on moisture held inside that porous joint. Ducon Tile Joint Filler keeps shrinkage under 0.1% and resists fungal growth, so the joint stays closed and stays clean.

How much tile joint filler do I need per square feet?

Coverage depends on tile size and joint width, since larger tiles mean fewer joints. As a working figure, 1 kg fills roughly 13 running metres of a 3 mm wide by 3 mm deep joint. For a typical 100 square foot bathroom laid with 12 by 12 inch tiles, 2 to 3 kg is normally enough. Our technical team can calculate exact quantities from your tile schedule for project orders.

How long does tile grout take to dry?

Ducon Tile Joint Filler has a working time of about 20 to 25 minutes at 25°C. The joint accepts light foot traffic after roughly 24 hours, heavy traffic after 3 days, and reaches full cure at 7 days. Keep the area free of standing water throughout the first day so the joint cures properly.

Should I choose cementitious or epoxy tile joint filler?

Cementitious filler suits homes, offices, hotels, and normal wet areas. It is easier to apply, more economical, and offered in a wider colour range. Epoxy filler belongs in food factories, laboratories, and industrial floors where acids, solvents, or aggressive washdown chemicals would attack a cement-based joint; for those conditions use Ducon Tile Joint Filler (Epoxy Based) instead. The international classification and test framework for both families is set out in ISO 13007-2, the test method standard for ceramic tile grouts and adhesives. For most residential and commercial tiling in Bangladesh, the cementitious grade is the correct specification.

Is tile grout safe for swimming pool tiles?

Yes. Ducon Tile Joint Filler is rated for swimming pools and permanently wet areas, with water absorption below 0.1% and strong adhesion to the tile edge under continuous immersion. Allow the full 7-day cure before filling the pool, and apply only over a properly waterproofed pool structure.

Who is a reliable tile joint filler supplier in Dhaka?

Ducon Construction Chemicals Industries Ltd. manufactures and supplies from our own Gazipur facility, dispatching factory-direct across the country, and publishes tile joint filler price in Bangladesh on request rather than through intermediaries. As a tile joint filler distributor Bangladesh contractors and dealers order from repeatedly, we supply every batch with a TDS, MSDS on request, and ISO 9001:2015-certified quality control. Contact our Mirpur DOHS office or call +8801844652497 to arrange a supply or discuss dealership.