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Carboweld 14 WB by Carboline

Carboweld 14 WB - Zinc Rich Weldable Primer

by Carboline
$364.12 - $1,638.54
$1,638.54
$364.12 - $1,638.54
$1,638.54

Carboweld 14 WB is a fast-drying, high-zinc content, two-package water-based inorganic zinc-rich pre-construction primer engineered by Carboline for superior temporary corrosion protection on steel substrates with weld-through capability.

This environmentally compliant, low-VOC primer delivers excellent galvanic protection during fabrication, storage, and transport, featuring ultra-high zinc loading, rapid dry-to-handle times, and compatibility with welding operations, producing high-quality welds without primer removal. Ideal as a shop/yard holding primer for structural steel, where fast turnaround and minimal preparation are essential.

Carboweld 14 WB PDS >
Finish: Flat / Matte
Color: Gray
Theoretical Coverage: Approx. 800-1000 sq ft/gal at 1-1.5 mils DFT (varies by application; refer to PDS for details)

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Key Features:

  • Ultra-High Zinc Content & Galvanic Protection: Provides cathodic (sacrificial) corrosion protection similar to hot-dip galvanizing during construction.
  • Weld-Through Capability: Allows direct welding over the applied primer with minimal spatter and no need for removal, ensuring sound, high-integrity welds.
  • Fast Drying & Low VOC Water-Based: Quick dry-to-handle for efficient shop production; environmentally friendly with low odor and compliance to strict VOC regulations.
  • Excellent Shop Primer Performance: Superior holding properties during fabrication, storage, and transport; compatible with subsequent topcoats in full coating systems.

Common Industry Applications:

  • Steel Fabrication & Structural Steel: Beams, columns, plates, and assemblies in fabrication shops requiring temporary protection and weldability.
  • Pre-Construction & Shop Priming: Used on blast-cleaned steel during manufacturing, cutting, welding, and assembly stages to prevent flash rusting.
  • Heavy Industrial & Infrastructure Projects: Bridges, buildings, offshore platforms, and other steel structures where primer is applied in controlled shop conditions before field erection and final coating.

Carboweld 14 WB is a TWO-COMPONENT SYSTEM (PART A & SPECIAL ZINC FILLER).

Product type: Water-Based Inorganic Zinc-Rich Pre-Construction Primer.
Finish: Flat / Matte.
Applied via: Conventional Spray. Application by Airless Spray, Brush, and/or Roller is not recommended.

Shipping & Delivery: Carboline orders typically ship within 1-2 business days following receipt of order. Most orders are received in less than a week. Expedited shipping NOT available on most orders.

Looking for a Carboline coating or protectant?
Contact our customer support today to discuss your project:
(800) 567-5358

Size: 4.8 gal
Coverage Calculator

Thinning & Cleanup

💧
Water-Based — No Special Thinners Required

Carboweld 14 WB is a waterborne formula. Thin with clean water only at up to 8 fl oz per gallon if job conditions require it.

Clean up spills and equipment immediately with warm soapy water, then flush with mineral spirits. Do not allow mixed material to dry in equipment.

Recommended Coating Systems

Shop Primer Only — Fabrication Phase Protection
Pre-Construction Primer Carboweld 14 WB 0.75–1.25 mils DFT · zero VOC · cathodic protection
Two-Coat Atmospheric System
Shop Primer Carboweld 14 WB 0.75–1.25 mils DFT · fully cured before topcoat
→
Topcoat Carboguard 890 4–6 mils DFT · epoxy mastic · mist coat first
Three-Coat Marine / Industrial System
Shop Primer Carboweld 14 WB 0.75–1.25 mils DFT
→
Intermediate Coat Carboguard 890 4–6 mils DFT · epoxy mastic
→
UV Topcoat Carbothane 134 HG 2–3 mils DFT · polyurethane

Frequently Purchased Together

Carboguard 890 Epoxy Mastic
Carboguard 890
Cycloaliphatic amine epoxy mastic. Recommended topcoat or intermediate coat over Carboweld 14 WB.
From $419.48 / 2 gal kit
Shop Now
Carbothane 134 HG Polyurethane Topcoat
Carbothane 134 HG
High-gloss UV-stable polyurethane finish coat for exterior service over the Carboweld 14 WB system.
From $292.27
Shop Now
Carboweld 11 Inorganic Zinc Shop Primer
Carboweld 11
Solvent-based inorganic zinc alternative. Longer pot life (48 hrs) · applies at 0°F · Lloyds Register certified.
Call for pricing
Shop Now

Carboweld 14 WB Waterborne Inorganic Zinc Pre-Construction Shop Primer by Carboline

Product Specs — Carboweld 14 WB

Carboweld 14 WB — Waterborne Potassium Silicate Inorganic Zinc Pre-Construction Primer by Carboline.
A fast-drying, high zinc content shop and yard primer for steel fabrication. Delivers cathodic sacrificial protection like galvanizing — 86% zinc dust by weight in the dry film. Zero VOC, no flash point water-based formula. Dries to handle in 12 minutes at 75°F. Rated to 750°F continuous service. For industrial, marine, and process environments.

✓ Zero VOC  •  ✓ 86% Zinc in Dry Film  •  ✓ Cathodic Protection  •  ✓ 750°F Max Service Temp  •  ✓ Dries to Handle in 12 min @ 75°F

✏️ Need a project quote? Request Online

📞 Questions? Call (800) 567-5358 — Mon–Fri 8AM–5PM EST

Carboweld 14 WB by Carboline

Carboweld 14 WB waterborne inorganic zinc pre-construction shop primer by Carboline — 0.96-gallon kit
Carboweld 14 WB — Waterborne Inorganic Zinc Shop Primer (0.96-Gal & 4.8-Gal Kits)

Shipping Map — Carboline Delivery Timing

US regional warehouse map showing estimated shipping transit times for Carboline product orders from Material Warehouse 🔍 Click to enlarge
Typical transit times vary by destination zone. Click map to enlarge.

Shipping Time

Call (800) 567-5358 for pricing and logistics questions.

Carboline orders ship from regional warehouses nearest to your location, with full product stock maintained at each facility.

Most orders ship within 2–3 business days of order placement. Transit times shown on the map are typical but not guaranteed.

Available sizes: 0.96-gallon kit (23 lbs)  •  4.8-gallon kit (112 lbs)

Mixing Instructions

Two-part kit: Part A (Liquid Resin) + Special Zinc Filler

Add the zinc filler to the liquid resin while continuously power mixing the liquid — not the other way around. Mix until uniform and pour through a 50-mesh screen. Do not mix partial kits.

Pot life: 6 hours at 75°F (24°C). Plan mix quantities to match your application rate. Thinning is possible with water at up to 8 fl oz per gallon if needed.

Kit Sizes & Component Breakdown

Kit Size Part A (Liquid Resin) Special Zinc Filler
0.96-Gal Kit0.714 gal14.6 lbs
4.8-Gal Kit3.57 gal73 lbs

Coverage Rates

Recommended DFT: 0.75–1.25 mils (19–32 microns) per coat. Do not apply above recommended film thickness — excess thickness can cause mudcracking.

DFT Theoretical Coverage
0.8 mils (19 µm)1,337 ft²/gal (32.8 m²/l)
1.0 mils (25 µm) — reference1,002 ft²/gal (24.6 m²/l)
1.2 mils (31 µm)802 ft²/gal (19.7 m²/l)

Solids by volume: 63% ±2%. Zinc dust in dry film: 86% by weight. Allow for mixing and application loss. Source: Carboline Carboweld 14 WB PDS (July 2018, doc 200F).

Curing Schedule

Times based on 1.0 mil (25 micron) DFT. Zinc must be thoroughly cured before topcoating.

Surface Temp. Dry to Handle Dry to Topcoat
41°F (5°C)60 Minutes4 Hours
50°F (10°C)30 Minutes2 Hours
75°F (24°C)12 Minutes90 Minutes
95°F (35°C)30 Seconds1 Hour
110°F (43°C)10 Seconds45 Minutes

Surface Preparation

Carboweld 14 WB is designed for new structural steel in shop and yard applications. All surfaces must be clean and dry.

Step Requirement
DegreasingSolvent clean per SSPC-SP1 to remove all oil, grease, and contaminants
Blast CleaningNear-White Blast — SSPC-SP10 minimum with angular surface profile
TimingPrime bare steel the same day it is cleaned or before flash rusting occurs

Substrate temperature must be above the dew point. Condensation interferes with adhesion and causes flash rusting on prepared steel. Source: Carboline Carboweld 14 WB PDS (July 2018, doc 200F).

Protection & Performance

Carboweld 14 WB works like zinc-rich galvanizing — the 86% zinc dust in the film corrodes sacrificially, preventing rust from reaching the steel beneath. It also resists undercutting, so if the surface is scratched, corrosion doesn't spread under the coating.

Weldable pre-construction primer. Suitable for fabrication environments where weldability and corrosion protection are both required.

Application: Conventional spray is the recommended method. Airless spray, brushing, and rolling are not recommended.

Topcoats: Compatible with epoxies and others as recommended by your Carboline representative. Apply a mist coat of the topcoat before the full coat to minimize bubbling.

Key Specifications, Packaging & Storage

Property Value
Generic TypePotassium Silicate, Inorganic Zinc
Intended UsePre-construction shop/yard primer — industrial, marine & process environments
Color / FinishGray · Flat
Solids by Volume63% ±2%
Zinc in Dry Film86% by weight
VOC (As Supplied)0 lbs/gal (0 g/l) — Zero VOC
Flash PointNone — waterborne formula
Recommended DFT0.75–1.25 mils (19–32 microns) per coat
Theoretical Coverage1,002 ft²/gal at 1.0 mil (24.6 m²/l at 25 microns)
Pot Life6 hours at 75°F (24°C)
Dry to Handle @ 75°F12 minutes
Dry to Topcoat @ 75°F90 minutes
Max Service Temperature750°F (399°C) continuous service (dry)
Application Temp (All)Min 40°F (4°C) · Max 110°F (43°C)
Humidity Range0% – 85% RH
Application MethodConventional Spray (recommended) · Airless, brush & roller not recommended
ThinningWater · up to 8 fl oz per gallon
CleanupWarm soapy water; flush with mineral spirits after
Shelf Life — Part A24 months at recommended storage conditions
Shelf Life — Special Zinc Filler24 months at recommended storage conditions
StorageIndoors · 40–110°F (4–43°C) · 0–90% RH · Keep from freezing
Kit Sizes0.96-Gal Kit (23 lbs) · 4.8-Gal Kit (112 lbs)

Source: Carboline Carboweld 14 WB PDS (July 2018, doc 200F).

Good to Know Before You Buy

⚠️ Key Points for Buyers
  1. Zero VOC — the waterborne alternative when air quality or safety regulations matter. Carboweld 14 WB contains no solvent and has no flash point, making it the right choice for enclosed shops with ventilation limits, regulated fabrication facilities, or any project with strict VOC compliance requirements. Cleanup is warm soapy water.
  2. 86% zinc gives galvanizing-level cathodic protection. The high zinc content means the coating sacrifices itself to protect the steel, not just creating a barrier. Scratches and minor damage don't lead to spreading corrosion the way a barrier-only coating would.
  3. Pot life is 6 hours — shorter than solvent-based zinc primers. Mix only what you can apply within the working window. Leftover mixed material cannot be saved. Plan batch sizes accordingly to avoid waste.
  4. Must not freeze — in transit or storage. Unlike solvent-based primers, Carboweld 14 WB is permanently damaged by freezing. Store and ship above 40°F (4°C) at all times. This also sets the minimum application temperature.

Frequently Asked Questions — Carboweld 14 WB

What is the coverage rate for Carboweld 14 WB?
Carboweld 14 WB has a theoretical coverage of 1,002 ft²/gal at 1.0 mil DFT (24.6 m²/l at 25 microns). At a thinner 0.8 mil DFT it reaches 1,337 ft²/gal. Recommended single-coat DFT is 0.75–1.25 mils (19–32 microns). Allow for mixing and application loss in practice.
Is Carboweld 14 WB a zero-VOC product?
Yes — zero VOC, zero flash point, water-based formula. Carboweld 14 WB contains no solvents, making it suitable for environmentally regulated facilities and eliminating the fire risk associated with solvent-borne zinc primers. Equipment cleanup is done with warm soapy water.
How does Carboweld 14 WB protect steel?
Carboweld 14 WB provides cathodic sacrificial protection like galvanizing. The 86% zinc dust in the dry film corrodes preferentially to protect the underlying steel. It also offers excellent undercutting resistance, so corrosion does not spread beneath the coating if the surface is scratched or cut.
What is the pot life and how should I plan my batches?
Pot life is 6 hours at 75°F. This is significantly shorter than solvent-based zinc primers — mix only what you can apply within that window. Leftover mixed material cannot be recapped and saved. The 0.96-gal kit is the right choice for smaller jobs or crews where waste is a concern.
How fast does Carboweld 14 WB dry?
At 75°F (24°C): dry to handle in 12 minutes, ready for topcoat in 90 minutes. At 50°F: dry to handle 30 minutes, topcoat in 2 hours. At 95°F: dry to handle in just 30 seconds. Zinc must be thoroughly cured before any topcoat is applied.
What surface preparation is required?
Solvent clean per SSPC-SP1, then blast to Near-White Blast SSPC-SP10 minimum with an angular surface profile. Prime bare steel the same day it is cleaned — before any flash rusting occurs. Substrate temperature must be above the dew point at time of application.
What topcoats are compatible with Carboweld 14 WB?
Epoxies and other topcoats are compatible as recommended by your Carboline sales representative. The zinc must be thoroughly cured before topcoating. Always apply a mist coat of the topcoat first before the full coat to minimize bubbling.
What is the maximum service temperature for Carboweld 14 WB?
Carboweld 14 WB is rated to 750°F (399°C) in continuous dry service, making it well suited for structural steel in industrial, process, and marine environments where elevated temperatures are expected.

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