Polyurethane Topcoat

Top Layer 100 A+B - Polyurethane Topcoat

Two-component aliphatic polyurethane topcoat — non-yellowing, UV resistant, wear resistant, RAL colour range

Top Layer 100 A+B is a two-component solvent-based aliphatic polyurethane topcoat from Licata — the ideal protective and decorative finish for Licata waterproofing membranes and cement-based substrates. This polyurethane topcoat delivers outstanding UV resistance with perfect colour retention, exceptional wear and abrasion resistance, elasticity, and chemical resistance across a service temperature range of -30°C to +90°C. Available in any RAL colour.

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Product Type Polyurethane Topcoat

Components 2-component A+B

Colours Full RAL Range

Dry to Touch 2 hours at 20°C

Temp Range -30°C to +90°C

Features & Benefits

Why specify Top Layer 100 A+B polyurethane topcoat?

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Non-Yellowing UV Resistant Polyurethane Topcoat

The aliphatic polyurethane resin formulation of this topcoat provides exceptional UV resistance with perfect colour retention over time — unlike aromatic polyurethanes which yellow. Dedicated R&D investment from Licata's laboratories ensures long-term colour stability.

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Superior Wear & Abrasion Resistance

This polyurethane topcoat delivers high mechanical and surface resistance — outstanding impact and abrasion resistance makes it suitable for walkable surfaces including terraces, balconies and industrial floors subject to regular foot traffic and wear.

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Chemical Resistance

Resistant to fresh and salt water, detergents, diluted acids and active chlorine (max 0.5% in water) — this polyurethane topcoat is suitable for use in marine, industrial and swimming pool environments where chemical exposure is a concern.

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Elastic from -30°C to +90°C

Top Layer 100 A+B polyurethane topcoat retains all its properties across a service temperature range of -30°C to +90°C — significantly wider than standard polyurethane topcoats and suitable for the most demanding thermal environments.

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Full RAL Colour Range

This polyurethane topcoat is available in any RAL colour — allowing complete freedom of colour specification for exposed waterproofing applications, terraces, balconies and decorative floor coatings.

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Fast Dry — Second Coat in 12 Hours

Touch dry in just 2 hours and ready for a second coat after 12 hours at 20°C — this polyurethane topcoat keeps projects moving without long waiting times between coats.

Product Description

Top Layer 100 A+B — Aliphatic Polyurethane Topcoat

Top Layer 100 A+B is Licata's two-component aliphatic polyurethane topcoat — the protective and decorative finishing layer for Licata waterproofing systems and cement-based substrates. Its aliphatic formulation, based on latest-generation resins, delivers non-yellowing UV resistance, exceptional elasticity, and outstanding mechanical surface resistance including impact and abrasion — even in extreme weather conditions.

This polyurethane topcoat is the recommended final layer over Licalastic 150 PU polyurethane waterproofing membrane, providing long-term colour stability, wear resistance and chemical protection that a waterproofing membrane alone does not offer. It can also be applied directly to cement-based substrates with the appropriate primer.

Top Layer 100 A+B polyurethane topcoat is supplied as a pre-dosed two-component system — component A (10kg) plus component B (3kg) — mixed together at a ratio of 1:0.3 by volume. Pot life is 4 hours at 20°C, and full hardening is achieved after 10 days.

Used Over

Licalastic 150 PU polyurethane waterproofing membrane · Other Licata liquid waterproofing products · Cement-based substrates (with Epoxy Floor 500 W primer)

Applications

Where to use this polyurethane topcoat

Protective topcoat over polyurethane waterproofing membranes

Exposed terraces and balconies

Roof waterproofing systems (final colour layer)

Cement-based substrates requiring decorative protection

Industrial floors and walkways

Marine environments

Swimming pool surrounds

Metal substrates (with Licaprimer 440 A+B primer)

Primer Required

On cementitious substrates: Epoxy Floor 500 W (50–75 g/m²) or Epoxy Cem TX A+B+C on damp substrates. On metal substrates: Licaprimer 440 A+B after sandblasting to SSPC-SP10.

Technical Data

Top Layer 100 A+B polyurethane topcoat — technical specification

AppearanceFluid liquid — RAL colour range

Mixing ratio (by volume)A : B = 1 : 0.3

Pot life at 20°C / 50% RH4 hours

Theoretical consumption150 g/m²

Theoretical thickness70 µm per coat

Dry to touch at 20°C2 hours

Second coat after12 hours at 20°C

Deep hardening48 hours at 20°C

Full hardening10 days at 20°C

Application temperature+5°C to +35°C

Service temperature-30°C to +90°C

Density1.19 ±0.05 kg/L

Non-volatile substances70 ±5% by weight

Packaging10kg (A) + 3kg (B) = 13kg total

Shelf life12 months (sealed, 20°C, dry)

Airless spray nozzle0.019–0.021 inch @ 120 bar

Mixing

Mixing Top Layer 100 A+B polyurethane topcoat

Pre-dosed system: Top Layer 100 A+B is supplied as pre-dosed components. Add the entire contents of component B to the container of component A — do not attempt partial mixes.

Mixing: Mix at low speed (max 300 rpm) for at least 3 minutes with a drill mixer until a perfectly uniform, lump-free mixture with an even colour is achieved.

Transfer and remix: Transfer the mixed polyurethane topcoat into a clean empty container and slowly remix for a further minute. This ensures thorough mixing from the sides and bottom of the original container.

Pot life: Use the mixed polyurethane topcoat within 4 hours at 20°C / 50% RH. Discard any product remaining after this time — do not attempt to apply expired material.

Application

Applying the polyurethane topcoat

Substrate preparation: Remove all flaking parts and clean thoroughly. Substrate must have pull-out resistance of at least 1.5 MPa. Apply the appropriate primer before the polyurethane topcoat.

Application: Apply this polyurethane topcoat by brush, roller or airless spray at 150 g/m² per coat — avoiding drips and product build-up. For airless: 0.019–0.021 inch nozzles at minimum 120 bar.

Second coat: Apply the second coat of polyurethane topcoat after at least 12 hours at 22°C / 50% RH. Two coats are standard for full protection.

Curing: Deep hardening is achieved after 48 hours. Full hardening after 10 days at 20°C. Protect the curing polyurethane topcoat from direct sunlight, strong wind and rain for at least 24 hours.

Two-component solvent-based product. Use PPE throughout — protect eyes and skin. Do not apply in extreme conditions (full sun or freezing temperatures). Temperature must be between +5°C and +35°C. 4 hour pot life — do not exceed.

Buy Top Layer 100 A+B polyurethane topcoat

Available from all six Licata branches. Available in any RAL colour — supplied as 13kg two-component kit. Speak to our team about colour matching, pricing and technical support.

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