Bicast Leather Sticky Topcoat Refinishing Kit B7

 Bicast Leather Sticky Topcoat Refinishing Kit B7 by Leather Doctor®

Bicast Leather Sticky Topcoat Refinishing Kit B7 is a complete professional system designed to degrease, pH balance, mechanically remove deteriorating urethane, crosslink, refinish, and condition Bicast leather.

It restores a dry, smooth, non-sticky finish while preventing future tackiness.

 What is Bicast Leather?

Bicast leather (Bycast leather) is a split suede base coated with a polyurethane (PU) film and embossed with a uniform texture.

It offers:

• Consistent appearance
• Easy maintenance
• Lower cost than top-grain leather

However, the polyurethane surface is chemically sensitive and prone to deterioration.

 Why Bicast Leather Becomes Sticky

Stickiness is not surface dirt — it is polyurethane breakdown (hydrolysis + contamination).

Common causes:

• Body oils and sweat → penetrate and soften the PU film
• Alkaline cleaners → swell and weaken the coating
• Humidity and environmental exposure → accelerate degradation

Typical Symptoms

• Rubbery or tacky feel
• Clothing sticking to seating areas
• Fabric imprint transfer
• “Tape-like” sound when sitting or rising

 Why Kit B7 Works (What Makes It Different)

Unlike surface cleaners, Kit B7 addresses all 4 failure layers:

1. Degreasing – removes embedded oils and debris.
2. pH Balancing – stabilizes chemical structure
3. Mechanical Removal (Buffer 3) – eliminates deteriorating PU layer
4. Crosslinked Refinishing – rebuilds a stable, non-sticky surface

 Critical Success Factor – Buffer 3 (New Improvement)

Sticky Bicast cannot be fixed by coating alone.

Buffer 3 is essential to:

• Remove the deteriorating topcoat as fine white powder
• Prevent unstable PU from remaining beneath the new coating
• Create a clean, receptive surface for adhesion

Professional Tip:
Continue buffing until residue remains light/whitish.
If it turns darker, you are reaching the color layer — reduce pressure.

This step determines whether the refinishing will succeed or fail.

 How to Fix Sticky Bicast Leather

Step 1 – Degreasing & Cleaning

• Degreaser 2.2 – lifts embedded oils and sweat
• Acidifier 2.0 – neutralizes alkalinity and restores pH
• Eraser 4 – assists controlled agitation

Step 2 – Controlled Topcoat Removal

• Buffer 3 – removes deteriorating polyurethane layer
• Produces fine white powder residue

✅ Do not over-sand into color layer
✅ Goal: remove instability, not pigment

Step 3 – Crosslinked Topcoat Refinishing

• Gloss 76 – water-based urethane topcoat
• Crosslinker 64 – catalyst for durability and anti-stick performance

✅ Apply thin, even coats only
✅ Allow proper drying between layers
✅ Optional: Sand 2000 for intercoat leveling

Step 4 – Conditioning & Protection

• Conditioner B – reduces friction and future stickiness
• Leaves a dry, buttery, non-tacky feel

Topcoat Coverage Guide (3 Coats)

• 4oz → up to 40 sq ft
• 8oz → up to 80 sq ft
• 16oz → up to 160 sq ft

 Kit Contents

Available Sizes: 4oz / 8oz / 16oz

Click links for details:

✅ Degreaser 2.2
✅ Acidifier 2.0
✅ Gloss 76
✅ Crosslinker 64 
✅ Conditioner B 
✅ Brush 9
✅ Foam 2
✅ Towel 5 
✅ Eraser 4 
✅ Buffer 3 (Essential Step)
✅ Sand 2000 

 Simplified Instruction Flow

1️⃣ Degrease

Apply Degreaser 2.2 → agitate → extract until towel shows clean

2️⃣ Acidify

Apply Acidifier 2.0 (1:25 dilution) → dwell 3–30 min → wipe dry
✅ Surface should feel squeaky clean when ready

3️⃣ Buffer (Critical Step)

Use Buffer 3 to remove deteriorated topcoat

✅ Aim for white powder residue
✅ Avoid cutting into color

4️⃣ Crosslink & Apply Topcoat

1. Mix Gloss 76 into Crosslinker 64
2. Allow 30 minutes reaction time
3. Apply thin coats only
4. Dry between coats
5. Cure 24–48 hours before use

5️⃣ Condition

Apply Conditioner B (1:19 dilution)
Allow to dry to a smooth, non-stick finish

Prevention After Restoration

To maintain results, use:

 Bicast Leather Sticky Preventive Care Kit B2

Maintains pH balance
Reduces oil buildup
Prevents recurrence

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