Description
SEM High-Build Primer Surfacer 20oz White Aerosol | Boat Supply Store
Address imperfections and prepare diverse marine substrates for refinishing with this high-build primer surfacer. It delivers exceptional adhesion and filling capabilities across steel, aluminum, urethane, fiberglass, and plastics, offering a smooth, 2 mil dry film thickness surface. This flexible acrylic coating ensures compatibility with most topcoats, making it ideal for critical boat hull repairs or gelcoat restoration projects where a flawless finish is paramount.
Key Features
- Flexible acrylic coating for durability
- Superior adhesion on diverse substrates
- Excellent filling properties for surface imperfections
- Versatile application on steel, aluminum, urethane, fiberglass, plastics, and SMC
- Easy sanding for a smooth finish
- Compatible with most refinish topcoats
- Convenient 20 oz. aerosol application
- Professional results for marine projects
Specifications
| Product Specifications | |
|---|---|
| Brand | SEM |
| SKU | CWR109318 |
| BC_ID | 123252 |
| Price | $34.99 |
| Category | Automotive/RV | Accessories |
| MPN | 42043 |
| Color | White |
| Container Size | 20 oz Aerosol |
| Substrate Compatibility | Steel, Aluminum, Urethane, Fiberglass, Plastics, SMC |
| Coverage | 11 sq. ft. at 2 mil DFT |
| Recommended Coats | 2-3 medium wet coats |
| Dry Time | 1 hour |
| Flash Time Between Coats | 5-10 minutes |
| Coating Type | Flexible acrylic primer surfacer |
Who This Is For
Marine enthusiasts and boat owners undertaking repair, restoration, or customization projects. Ideal for DIYers needing a versatile, high-build primer for various substrates including fiberglass and metal.
How It Compares
| Feature | SEM High-Build Primer Surfacer 20oz White Aerosol | Competitor |
|---|---|---|
| Container Size | 20 oz Aerosol | — |
| Substrate Compatibility | Steel, Aluminum, Urethane, Fiberglass, Plastics, SMC | Fiberglass, gelcoat, primed metal, painted surfaces, Bare metal, primed surfaces, aluminum, fiberglass, 2K primers |
| Drying Time | 1 hr | 45 minutes, 30 minutes |
| Color | White | White, Grey |
Common Concerns Answered
Are there any maintenance requirements to prevent application issues?
To avoid nozzle clogging, it's crucial to clean the nozzle thoroughly immediately after each use by inverting the can and spraying until only clear propellant is expelled.
What safety precautions are necessary due to the product's odor?
This product has a strong odor, necessitating the use of this product in a well-ventilated area or with appropriate respiratory protection to ensure user safety.
Will this primer require significant surface preparation before application?
Basic surface preparation, including cleaning and ensuring the substrate is free of contaminants, is required. The product's high-build nature minimizes the need for extensive filling prior to priming.
Frequently Asked Questions
What surfaces can SEM High-Build Primer Surfacer be used on?
SEM High-Build Primer Surfacer adheres exceptionally well to steel, aluminum, urethane, fiberglass, plastics, and SMC materials.
How long does SEM High-Build Primer Surfacer take to dry?
The primer typically dries to the touch in approximately 1 hour, with a recommended 5-10 minute flash time between applying multiple coats.
What is the coverage rate of SEM High-Build Primer Surfacer?
The coverage rate is approximately 11 square feet at a dry film thickness of 2 mils per 20 oz. aerosol can.
Can SEM High-Build Primer Surfacer be sanded?
Yes, this primer surfacer is designed for excellent sandability, allowing for easy surface preparation before applying topcoats.
What is the recommended number of coats for SEM High-Build Primer Surfacer?
It is recommended to apply 2 to 3 medium wet coats to achieve optimal filling and adhesion.
