Fire Resistance Rating
N/A — Protective Topcoat
Recommended Environment
C1–C3 (No Primer), C4–C5 (With Primer)
UV / Gloss Performance
Outstanding UV & Gloss Retention
VOC Content
328 g/L (Part A, as supplied)
Volume Solids
Not published in sources checked
Max Dry Film Thickness (DFT)
Not published in sources checked
Application Method
Not published in sources checked
Pack Size & Storage
Not published in sources checked
Sources: Carboline regional product page (environment, UV/gloss) and the Carbothane 137HS Part A Safety Data Sheet already hosted on your own site (VOC content). Carboline's official TDS PDF is blocked to automated access (robots.txt) — I could not pull volume solids, DFT or pack size from it. If you can download it from your Carboline rep or account, send it over and I'll fill in the rest with real numbers instead of leaving them blank.
Substrate Preparation
- Corrosivity Category: Suitable for direct-to-metal application in C1–C3 environments without a primer.
- Higher Corrosivity: For C4–C5 environments, apply over an appropriate Carboline primer system.
Primer Systems
- Specific primer product names/DFT ranges were not published in the sources I could access — confirm the approved primer system with Carboline for your substrate and corrosivity category.
Application
- Two-component polyurethane, mixed per Carboline's stated ratio before application (ratio not published in the sources checked).
- Formulated for fast-drying, high-build application with excellent dry times relative to standard polyurethane topcoats.
Drying Schedule
Specific tack-free, recoat and full-cure times were not published in the sources I could access for this product — Carboline's official data sheet is blocked to automated fetching. Confirm with Carboline or your TDS copy before publishing exact hours.
Third-Party Certifications & Compliance
- No third-party fire or corrosion certifications were found in the sources checked for this specific product — as a topcoat it is typically used as part of a certified system rather than certified on its own. Confirm with Carboline if a specific approval is required for your project.
Technical Documents
The Part A SDS link above is already live on your own site. The other three are placeholders — point them at your hosted TDS / Part B SDS / certificate once confirmed.