Asian Paints WoodTech PU Exterior Sealer

Key Features

• Excellent Pore-Filling Capacity: An advanced high-solid resin system seals deep open grains, structural micro-pores, and porous fibers of raw outdoor woods, providing a completely flat foundation
• Prevents Topcoat Sinkage: An impermeable base shield holds up subsequent coats, ensuring the final exterior finishes achieve their fully rated gloss or matte properties without patching or fading over time
• Weather & Water Barrier Foundation: Deposits a robust waterproof undercoat layer that significantly reduces natural timber absorption, shielding wood profiles against rain ingress, high humidity, and fungal rotting
• Exceptional Sanding Ease: Dries into a crisp, rigid preparatory film that chalks into a fine dry powder without clogging premium sandpaper, enabling effortless levelling of surface ripples
• Strong Inter-coat Adhesion: Premium acrylic-polyurethane cross-linking agents bond chemically with raw wood fibers below and the tough exterior topcoats above, eliminating risks of peeling or film detachment under intense sunlight

Technical Specifications (Quick Reference)

Specification	Details
Brand	Asian Paints
Product	WoodTech PU Exterior Sealer
Product Code	2105
Product Finish Type	Clear Matt Undercoat / High-Build Exterior Sealer
Mixing Ratio (Base : Hardener)	80 : 20 by volume (4 parts Base to 1 part Hardener)
Dilution Parameters	15% to 30% by volume using official WoodTech PU Thinner
Application Viscosity	15 to 20 seconds when measured via a standard Ford Cup No. 4
Pot Life Stability	Must be entirely consumed within 3 hours after introducing hardener
Maturation Period	Allow the activated mixture to rest undisturbed for 30 minutes before spraying
Drying Time Profile	Surface dry: 25 minutes; Tack-free window: ~3 hours
Recoating Window	6 to 8 hours of drying time required before sanding and over-coating
Theoretical Coverage	Approximately 70 to 80 sq. ft. per litre per coat (varies with timber porosity)
Included Components	Base Sealer Resin and PU Exterior Hardener, packed together as a single kit
Available Pack Sizes (SKUs)	1 Litre, 4 Litre, 20 Litre

Ideal Application Areas

• Main Entrance Doors: Establishes a rock-hard, non-yellowing base undercoat for premium hardwood entryways and grand architectural doors
• Exterior Wooden Balconies & Decks: Withstands extreme thermal shifts, intense daylight, and fluctuating moisture patterns on outdoor platforms
• Windows & Railings: Protects structural exterior window frames, louvers, and exposed railings from water retention
• Patio Furniture: Forms an impact-resistant undercoat layer on exterior wooden tables, chairs, and luxury garden swings
• Architectural Exterior Wood Cladding: Universally suited for extensive vertical timber panels requiring stable dimensional protection against weathering

To eliminate structural defects such as orange peels, trapped pinholes, or uneven layer thickness, always apply the sealer using a professional conventional spray gun setup operating at a stable air pressure of 2.2 to 2.8 kg/cm². For oily or exotic outdoor hardwoods (such as genuine Teak or Rosewood), always execute a layer of WoodTech Epoxy Insulator prior to sealing to prevent natural organic wood oils from stalling the polyurethane chemical cure.

Necessary Steps Before Applying the Sealer

1. Initial Sanding: Thoroughly abrade the raw wood profile along the direction of the natural grain lines using Sandpaper No. 180, subsequently progressing to finer No. 320 or 400 paper. Wipe away all microscopic wood dust
2. Imperfection Fixing: Clean away loose fibers. Fill noticeable dents, deep structural cracks, or open knot gaps tightly using professional WoodTech Wood Filler via a flexible putty knife. Allow complete drying before leveling it flat
3. Timber Staining (Optional): If a tinted wood tone is desired, apply a translucent layer of exterior-grade WoodTech Wood Stains by spraying or ragging. Allow it to cure completely for 30 to 120 minutes. Never mix stains directly into the clear polyurethane liquid
4. Sealer Mixing: Thoroughly stir the Sealer Base (2105) container. Blend Base and Hardener strictly in an 80:20 volumetric ratio. Dilute with 15% to 30% WoodTech PU Thinner and leave the solution undisturbed for 30 minutes to mature
5. First Sealer Coat: Spray a uniform, consistent layer across the wooden surface layout. Allow it to dry undisturbed for a full window of 6 to 8 hours
6. Intermediate Sanding: Once fully dry, abrade the sealed layout gently using ultra-fine Sandpaper No. 320 or 400 to cut down raised grains. Clear off all dust; never use steel wool for intermediate wood sanding
7. Second Sealer Coat: Apply a second uniform spray layer of the activated sealer mix to secure a perfectly smooth, non-porous profile. Let it dry for 6 to 8 hours before a final light sanding, ready for the exterior topcoats (Glossy 2107 or Matt 2106)

• Authentic Asian Paints Product: Verified genuine product sourced from authorized distributors
• 60-Minute Bangalore Delivery: Express delivery to active service zones for urgent project needs
• Project-Friendly Availability: Single-litre packs for touch-ups or bulk 20L packs for full exterior projects

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