DURAfill / Sil Fill Board , Expansion Joint Filler Sheet for RCC Structures
Consumption Planning
Request a return from your account within 10 days of delivery. Sign-in is required so we can verify your order.
- Item must be unused, undamaged and in original sealed packaging.
- Return transportation cost is borne by the customer.
- No restocking charges. Sale-priced items are not eligible.
DURAfill / Sil Fill Board , Expansion Joint Filler Sheet for RCC Structures
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DURAfill Expansion Joint Filler Board (formerly SIL FIL) is a high-performance, closed-cell, polymer-based expansion joint filler sheet engineered for RCC columns, beams, walls, and slabs. Alkali resistant and bitumen-free, it delivers reliable joint movement accommodation across the full service life of the structure.
Why Contractors Choose DURAfill
Unlike conventional EPS or bitumen-impregnated boards, DURAfill's closed-cell polymer structure means negligible water and moisture absorption, with zero risk of staining, bleeding, or disintegration over time. It can be cut cleanly with a knife no crumbling, no dust, no fibres making site installation fast and accurate.
Key Features
- Closed-cell construction virtually zero water absorption (≤ 0.45 kg/m²)
- Alkali resistant unaffected by alkalis, alcohols, detergents, and petrochemical products
- Excellent compressive recovery accommodates repeated joint movement without permanent set (compression set ≤ 25%)
- Bitumen-free, non-staining safe against architectural substrates and sealants
- Knife-cuttable on site no special tools required
- Tested to ASTM D3575
Technical Specifications
| Parameter | Value | Test Method |
|---|---|---|
| Water Absorption | ≤ 0.45 kg/m² | ASTM D3575 |
| Density | ≥ 28 kg/m³ | ASTM D3575 |
| Compression Strength (25% deflection) | ≥ 0.21 kg/m² | ASTM D3575 |
| Compression Set | ≤ 25% | ASTM D3575 |
| Tensile Strength | ≥ 1.8 kg/cm² | ASTM D3575 |
| Elongation | ≥ 60% | ASTM D3575 |
Applications
- Structural expansion joints in RCC buildings (columns, beams, walls, slabs)
- Brick and block masonry isolation joints
- Joints between adjacent structures buildings,
- Manholes, drains, and concrete insets
Sheet Sizes Available
Each sheet: 1.4 m × 2.0 m. Available in thicknesses of 20 mm, 40 mm, 50 mm, 60 mm, and 75 mm to match joint width requirements.
Shipping cost is calculated at checkout based on weight and delivery PIN code. Add items to cart and use the Shipping Calculator for the exact freight.
For bulk orders, project sites or custom freight quotes — WhatsApp +91 92568 16832 or email query@technotradeassociates.com.
Dispatch: After payment confirmation, Buildsmart products are usually dispatched within 48 hours and all other brands within 3 working days. Tracking shared via email or WhatsApp.
Returns: 10-day no-questions-asked return window. Sign in to your account to request a return. Read full policy.
Discover more in our FAQ
How long does it take to process an order?
After payment confirmation: Buildsmart products are usually dispatched within 48 hours. All other brands are usually dispatched in 3 working days. You will receive tracking details by email or WhatsApp once dispatched. For bulk or project orders, contact us at crm@technotradeassociates.com for indicative lead times.
Do you ship pan-India?
Yes, we ship across India including metros, Tier 2 cities, and remote project sites. For international or export inquiries, email crm@technotradeassociates.com with your requirements and location.
What is your return policy?
10-day no-questions-asked return policy. Items must be unused, undamaged and in original sealed packaging.
How to request: Sign in to your account at account.technotrade.in, open the order, and click Request return. We approve and coordinate pickup. Return freight is borne by the customer.
For damaged or incorrect items, also WhatsApp pictures to +91 92568 16832 within 48 hours so we can prioritise. Read full policy.
Do you offer technical application support?
Yes. Our construction chemical specialists can guide you on product selection, mixing ratios, surface preparation, and application for waterproofing, flooring, repairs, and concrete. Contact us via WhatsApp or call for remote or on-site support.