professional-bathtub-refinishing-process
SHARKGRIP REFINISHING SYSTEM BUILDER
Identify the Surface • Choose the Prep • Select the Bonding Agent • Match the Finish System
A professional guide for refinishers who want a clear path from surface identification to coating selection.
Clean • Dry • Dull
If It Etches → Power Bond
If It Sands → Bull Shark
Call for System Help
Start With the Surface — Not the Coating
The coating is only one part of the system. Professional results begin by identifying the surface, choosing the correct preparation method, wiping with the proper bonding agent, selecting the right system path, and matching the final coating to the performance needs of the job.
1. What Surface Are You Refinishing?
START HERE: IDENTIFY THE SURFACE
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PORCELAIN / CERAMIC TILE PATH
ScumBuster Pre-Clean
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Safe-Etch Gel
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SWAT Final Wipe
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Power Bond Wipe-On Primer
Use this path when the surface is chemically profiled by etching.
FIBERGLASS / CULTURED MARBLE / COMPOSITE PATH
ScumBuster Pre-Clean
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Sand / Abrade
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SWAT Final Wipe
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Bull Shark Adhesion Promoter
Use this path when the surface is mechanically profiled by sanding.
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NEXT: Choose the correct system path - then match the coating to the job.
PROFESSIONAL RULE
IF IT ETCHES → USE POWER BOND
IF IT SANDS → USE BULL SHARK
2. Clean, Dry and Dull Is the Final Goal
The Goal Never Changes
Every professional refinishing job must end with a surface that is clean, dry and dull. That final profile is the foundation for adhesion, film build, and long-term performance.
The Method Changes by Surface
Porcelain and ceramic tile are chemically profiled with Safe-Etch Gel. Fiberglass, cultured marble, ABS, Formica and composites are mechanically abraded.
3. Core Preparation Products in Order of Progress
COMMON START: Clean first. Then choose the correct profiling method. Then solvent wipe. Then bond.
STEP 1 — CLEAN EVERY SURFACE
ScumBuster Pre-Clean
Remove soap scum, oils, residues, and contamination before profiling.
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STOP — CHOOSE YOUR SURFACE PROFILING METHOD
Remember the rule: Clean Dry and Dull, this will never change.
Do not continue until you identify the surface. Porcelain and ceramic tile follow the etch path. Fiberglass, cultured marble, ABS, Formica, and composites follow the sand path.
A. ETCH PATH
Safe-Etch Gel
Use for porcelain and ceramic tile. This path leads to Power Bond Wipe-On Primer.
B. SAND PATH
Sand / Abrade
Use for fiberglass, cultured marble, ABS, Formica, and composites. This path leads to Bull Shark Adhesion Promoter.
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STEP 3 — FINAL WIPE
SWAT Final Wipe
Use after profiling the surface and before Power Bond Bonding Agent or Bullshark Adhesion promoter.
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STEP 4 — APPLY THE CORRECT BONDING AGENT
Your profiling method determines the bonding product.
IF YOU ETCHED
Power Bond Wipe-On Primer
For etched porcelain and ceramic tile.
IF YOU SANDED
Bull Shark Adhesion Promoter
For sanded fiberglass, cultured marble, ABS, Formica, and composites.
4. Primer & Topcoat System vs. Direct-to-Surface System
After the surface has been cleaned with ScumBuster, properly profiled using Safe-Etch Gel or sanding, solvent wiped with SWAT, and treated with either Power Bond Wipe-On Primer or Bull Shark Adhesion Promoter, the next decision is how the refinisher wants to achieve film build and long-term performance.
There are two proven paths. One uses a dedicated primer beneath the finish coat. The other uses a direct-to-surface finish system with additional coats to achieve the desired build.
There are two proven paths. One uses a dedicated primer beneath the finish coat. The other uses a direct-to-surface finish system with additional coats to achieve the desired build.
Primer & Topcoat System
Power Bond or Bull Shark
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SharkGrip High Solids High Build Epoxy Primer
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Selected SharkGrip Finish System
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SharkGrip High Solids High Build Epoxy Primer
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Selected SharkGrip Finish System
This path uses primer to create additional film build beneath the finish coat. The primer helps improve hiding, build, impact distribution, and overall system strength.
Direct-to-Surface System
Power Bond or Bull Shark
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Liquid Porcelain Enamel or SharkGrip High Gloss Epoxy
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Additional Build Coats As Needed
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Liquid Porcelain Enamel or SharkGrip High Gloss Epoxy
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Additional Build Coats As Needed
This path uses direct-to-surface systems designed with adhesion built in. When more build is desired, apply additional coats of the finish system itself.
Important LPE Rule: Do not use SharkGrip High Solids High Build Epoxy Primer beneath Liquid Porcelain Enamel unless specifically instructed by SharkGrip Technical Support.
Additional film build: Impact and chip resistance greatly improves with a few additional coats when spraying Liquid Liquid Porcelain Enamel or SharkGrip High Gloss Epoxy Topcoat. Primer or additional mils help distribute imacts more evenly across the surface.
5. Film Build and Useful Service Life
There Are Two Ways to Get Build
With a primer and topcoat system, build is created with SharkGrip High Solids High Build Epoxy Primer beneath the finish. With Liquid Porcelain Enamel or SharkGrip High Gloss Epoxy, build is created by applying additional coats of the finish system itself.
Why More Build Is Important
More film build can improve hiding, help distribute impact energy, and create a more durable coating stack. The goal is not extra material for its own sake. The goal is enough film build for the service conditions of the job.
6. Why SharkGrip Offers Multiple Finish Systems
Most suppliers try to solve every refinishing situation with one coating. SharkGrip takes a different approach.
Different surfaces, service environments, production requirements, turnaround expectations, and customer needs often require different solutions. That is why SharkGrip offers multiple professional finish systems, each designed to excel in specific applications.
The goal is not to determine which coating is “best.” The goal is to determine which coating is best suited to the professional refinisher, the customer, and the service environment.
Different surfaces, service environments, production requirements, turnaround expectations, and customer needs often require different solutions. That is why SharkGrip offers multiple professional finish systems, each designed to excel in specific applications.
The goal is not to determine which coating is “best.” The goal is to determine which coating is best suited to the professional refinisher, the customer, and the service environment.
Professional Insight: SharkGrip High Gloss Epoxy, SharkThane Quick Dry, Liquid Porcelain Enamel, and SharkThane Plus are not competing against each other. They are different tools for different jobs.
7. Determine the Performance Need
All SharkGrip coating systems, when applied as directed over properly prepared surfaces, are designed for professional refinishing work. The difference is not good versus bad. The difference is choosing the right tool for the job.
Commercial Production
Apartments, hotels, production schedules, and immersion service needs.
→ SharkGrip High Gloss Epoxy
Fast Turnaround
Same-day service, rentals, property management, and emergency work.
→ SharkThane Quick Dry
Ease of Application
For professional refinishers who want the easiest system to spray.
→ Liquid Porcelain Enamel
Maximum Resistance
Chemical, stain, UV, anti-graffiti, exterior, pool slides, and water parks.
→ SharkThane Plus
8. Choose the SharkGrip Finish System
SharkGrip can help professional refinishers build the right system for their operation, customer base, turnaround requirements, and the surfaces they refinish most.
SharkGrip High Gloss Epoxy
Commercial production, direct-to-surface applications, immersion service, apartments, hotels, and high-volume work.
SharkThane Quick Dry 4-Hour
Fast turnaround, 4-hour return-to-service, rentals, property management, emergency work, and same-day scheduling.
Liquid Porcelain Enamel
Easiest professional coating system to spray. Direct-to-surface capable, immersion service rated, and designed for smooth application.
SharkThane Plus
Maximum chemical resistance, stain resistance, UV absorbers, anti-graffiti performance, exterior use, pool slides, water parks, and harsh environments.
9. Direct-to-Surface Systems Without Confusion
Liquid Porcelain Enamel Direct-to-Surface Lane
Liquid Porcelain Enamel is designed to go direct to properly prepared surfaces. Do not use epoxy primer under LPE unless SharkGrip technical support specifically instructs otherwise. For more build, spray extra coats of LPE.
SharkGrip Epoxy Direct-to-Surface Lane
SharkGrip High Gloss Epoxy uses the same resin family as the primer in a high-gloss finish system. Going direct-to-surface with additional build coats is a sound production approach when the surface is properly prepared and bonded.
10. Surface Decision Matrix
| Surface | Prep Method | Bonding Choice | System Direction |
|---|---|---|---|
| Porcelain Tub | ScumBuster + Safe-Etch Gel + SWAT | Power Bond Wipe-On Primer | Primer/topcoat system or compatible direct-to-surface system |
| Ceramic Tile | ScumBuster + Safe-Etch Gel + SWAT | Power Bond Wipe-On Primer | Choose system by exposure, traffic, and customer expectations |
| Fiberglass / Cultured Marble / Composite | ScumBuster + Sand/Abrade + SWAT | Bull Shark Adhesion Promoter | Choose system by flexibility, use, exposure, and service conditions |
| Commercial Production | Surface-specific prep | Power Bond or Bull Shark based on prep method | SharkGrip High Gloss Epoxy or SharkThane Quick Dry based on production needs |
Pro Tip: If it etches, use Power Bond. If it sands, use Bull Shark.
11. Professional Results Require More Than Products
Hands-On Training
Refinishing is a skilled trade. Training helps professional refinishers understand surface evaluation, prep, masking, ventilation, spraying, equipment selection, and troubleshooting.
Direct Technical Support
Call SharkGrip and we can help build the right system for your operation, customer base, turnaround requirements, and service conditions.
Need Help Choosing the Right System?
Call SharkGrip and we will help match the right preparation, bonding agent, film build, and finish system to your surface, customer, schedule, and performance requirements.
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