Davis FSR Fiberglass Stain Remover is a gel treatment for stained areas where routine washing leaves visible discoloration. Its documented cleaning tasks include oil, rust, exhaust, waterline and transom staining. The gel is applied to the affected area rather than used as a replacement for a complete wash and maintenance routine.
For a fiberglass stain remover gel, check the surface beneath the stain before application. Davis identifies gelcoat and white painted surfaces, with an initial test to establish finish compatibility. This is stain treatment; assess chalkiness or oxidation separately before deciding whether a compound is appropriate.
This is the 2-liter Big Job package, MPN 792, for buyers who want the larger FSR container. Plan quantity using the treatment area and approved application rather than a promised boat length. Compare the smaller Davis FSR package when your project needs a different amount.
Clear Product Details
Review the 16 oz gel format, specifications and application directions.
Surface Guidance
Check fiberglass, gelcoat and finish suitability before use.
Product Support
Ask about your surface and stain type before ordering.
Shipping & Returns
Review shipping information and return conditions before purchase.
FIBERGLASS STAIN CARE
Treat Fiberglass Stains Without a Compounding Step
-
-
Waterline Staining
-
Exhaust and Transom Marks
-
Gel Application
-
Finish Check
-
Stain or Oxidation?
Compare FSR Package Sizes and Surface-Care Tasks
Plan Your Fiberglass Stain Treatment
What Customers Say
Effortlessly absorbs severe rust streaks and waterline stains
Davis FSR Big Job Fiberglass Stain Remover 2-Liter made detailing our larger vessel and hull sides exceptionally fast. The unique gel formula absorbs deep rust streaks, tannin stains, oil film, and waterline yellowing right out of the fiberglass without needing aggressive scrubbing.
2-Liter capacity is ideal for big detailing jobs and fleet maintenance
Purchasing the 2-liter economy size provided more than enough stain remover gel for our entire 38-foot hull. Using a brush to apply it along the waterline worked perfectly—it clings securely to vertical fiberglass surfaces and rinses clean with fresh water.
Safe and effective stain remover that won't scratch gelcoat
This non-abrasive stain remover gel neutralizes tough discoloration and exhaust soot in minutes. It completely removes deep-set waterline yellowing across large hull areas without scratching, dulling, or stripping the gelcoat gloss.
Saves tremendous labor time during seasonal haul-out prep
An essential product for major boat restoration and spring commissioning. The 2-liter container offers plenty of gel for extensive coverage, eliminating back-breaking compounding to leave a clean, bright hull.
Well-packaged container and high-performance gel formula
The 2-liter jug arrived promptly and tightly sealed with no leaking during transit. Applied it to heavily stained areas around the water outlets and exhaust ports, and it restored the gelcoat to pristine condition effortlessly.
Frequently Asked Questions
Which exact product and package is this listing for?
This listing is Davis FSR Big Job Fiberglass Stain Remover – 2 Liter, store SKU 57821. The listed part number is 792.
Does Davis FSR require sanding or compounding?
The stated FSR stain-treatment process does not require sanding or compounding. Follow its application and removal directions.
Can I use it on painted surfaces?
Davis identifies white painted surfaces and gelcoat, with a small-area test first. Confirm suitability for your exact finish.
Is FSR an oxidation compound?
This listing is for a stain-absorbing gel. Assess a chalky or oxidized finish separately before choosing a restoration compound.
How should I choose quantity for my boat?
Use the actual treatment area and the current product directions. No guaranteed coverage by boat length is supplied here.
Where can I compare another package or treatment?
Use the selection-card links to compare the exact product, review the cleaning category or ask Mariners Warehouse about the surface and task.
Need Help?
Need Help Choosing the Right Marine Cleaning Product?
Trusted by 50,000+ boat owners across the USA
-
Expert Marine Support
Our team has years of experience in marine parts.
-
Fast Response
We respond quickly to get you the help you need.
-
Find Compatible Parts
We make sure you get the right part the first time.
-
Huge Selection
Access to 50,000+ marine parts & accessories.
- Choosing a selection results in a full page refresh.