Can Carboguard 690 be applied to damp surfaces?

Yes — Carboguard 690 is moisture-tolerant and can bond to damp surfaces. However, moisture-tolerant does NOT mean waterproof. Standing water must be removed before application, and proper SSPC surface preparation is still required.

What is the minimum application temperature for Carboguard 690?

Carboguard 690 has a minimum application and cure temperature of 20°F (-7°C). Its phenalkamine chemistry provides this excellent low-temperature performance, though cure is slow between 20–40°F — plan recoat windows accordingly.

Carboguard 690 Moisture Tolerant Epoxy Coating

Q: What is the coverage rate for Carboguard 690?

Carboguard 690 coverage varies significantly with applied DFT. At 6 mils DFT: approximately 200 ft²/gal theoretical. At 10 mils DFT: approximately 120 ft²/gal. At 16 mils (high-build single coat): approximately 75 ft²/gal. Always calculate for your specific target thickness and allow for application loss.

Q: Is Carboguard 690 approved for potable water?

No. Carboguard 690 is NOT NSF certified for potable water service. It is suitable for non-potable water, process water, salt water, and wastewater. For potable water, see Carboguard 635 VOC or Hydroplate 1086.

Q: Can Carboguard 690 be used for CUI (Corrosion Under Insulation)?

Yes — Carboguard 690 is suitable for CUI service under insulation up to 300°F (149°C). Apply as a base coat to steel piping or vessels before insulation is installed.

Thinner	Use With	Max Rate
Thinner No. 2	Spray — all conditions	Per TDS

Thinner

Use With

Max Rate

Thinner No. 2

Spray — all conditions

Per TDS

Product Specs — Carboguard 690

Carboguard 690 — High-Performance Phenalkamine Epoxy by Carboline.
A high-build, moisture-tolerant epoxy engineered for severe service on steel, piping, tankage, and concrete. Outstanding cold-temperature cure performance with a minimum application temperature of 20°F (-7°C) — one of the lowest in its class.

Property	Value
Chemistry	High-Performance Phenalkamine Epoxy
Components	Two-Part (Part A + Part B)
Mix Ratio	4:1 by volume (A to B)
Finish	Semi-Gloss
Max DFT per Coat	16 mils (406 µm)
Min Cure Temp	20°F (-7°C)
Application Methods	Conventional Spray, Airless Spray, Brush, Roller
Recommended Thinner	Carboline Thinner No. 2
Substrates	Steel, piping, tankage, concrete/masonry
Immersion Service	Salt water, process water (non-potable), wastewater
CUI Service	Under insulation up to 300°F (149°C)

✔ Moisture-Tolerant — bonds to damp surfaces • ✔ High-Build — up to 16 mils per coat • ✔ Cold Cure — min 20°F (-7°C)

✏️ Need a project quote? Request Online

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

Carboguard 690 by Carboline

Carboguard 690 high-performance phenalkamine epoxy coating by Carboline — high-build moisture-tolerant corrosion protection for steel and concrete — Carboguard 690 — High-Build Phenalkamine Epoxy, Part A & Part B

Shipping Map — Carboline Delivery Timing

Carboline US regional warehouse shipping map showing typical delivery transit zones — Typical transit times vary by destination zone. Click map to enlarge.

Shipping & Availability

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

Carboguard 690 ships from Carboline regional warehouses closest to your location. Full product stock is 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.

Note: Carboguard 690 is a two-component system — Part A and Part B ship together as a kit.

Carboguard 690 Coverage Rates

Coverage varies significantly with DFT. At maximum high-build thickness (16 mils), one coat of Carboguard 690 can replace two standard epoxy coats. Always calculate for your specific target DFT and allow for application loss.

DFT per Coat	Theoretical Coverage	Metric	Typical Use
6 mils (150 µm)	~200 ft²/gal	~4.9 m²/l	Standard coat — atmospheric service
8 mils (200 µm)	~150 ft²/gal	~3.7 m²/l	Moderate build — splash zone, general industrial
10 mils (250 µm)	~120 ft²/gal	~2.9 m²/l	High-build — immersion, wastewater
12 mils (300 µm)	~100 ft²/gal	~2.5 m²/l	Heavy-build — severe service, tank linings
16 mils (400 µm)	~75 ft²/gal	~1.8 m²/l	Maximum single coat — replaces 2 standard coats

Theoretical coverage; allow for application loss (typically 10–20%). Verify coverage for your specific DFT with Carboline TDS before ordering.
Source: Carboline Carboguard 690 Technical Data Sheet

Good to Know Before You Buy

⚠️ Important Notes — Read Before Ordering

NOT approved for potable water. Carboguard 690 is NOT NSF certified. Buyers in water treatment sometimes confuse this with Carboguard 635 VOC or Hydroplate 1086 (both NSF-certified). CG690 is for non-potable water, process water, and wastewater only.
Moisture-tolerant ≠ waterproof. CG690 bonds to damp surfaces — but that's not the same as waterproofing. Proper SSPC surface preparation is still required. Remove standing water before application.
Phenalkamine chemistry = slower cure in the cold. Below 40°F, tack-free times extend significantly. Plan recoat windows carefully in cold weather. Consult the TDS cure schedule for your conditions.
High-build means over-application risk. 16 mils per coat is exceptionally thick — one heavy coat replaces two standard coats, but too much in one pass risks sags and runs. Follow TDS application guidance.
Coverage varies significantly with DFT. A 6-mil coat covers nearly three times the area of a 16-mil coat per gallon. Always calculate for your specific target thickness — don't guess.

Frequently Asked Questions — Carboguard® 690

What is the coverage rate for Carboguard 690?

Coverage varies with applied DFT. At 6 mils: ~200 ft²/gal theoretical. At 10 mils: ~120 ft²/gal. At 16 mils (high-build): ~75 ft²/gal. Always calculate for your specific target thickness and account for application loss. Use the Coverage Calculator widget on this page.

Is Carboguard 690 approved for potable water?

No. Carboguard 690 is not NSF certified and may not be used for potable water contact. It is designed for non-potable water, process water, salt water, and wastewater service. For potable water, consider Carboguard 635 VOC or Hydroplate 1086.

Can Carboguard 690 be applied to damp or wet surfaces?

Carboguard 690 is moisture-tolerant — it can bond to damp surfaces. However, standing or pooled water must be removed before application. Moisture-tolerant does not mean you can skip surface preparation — SSPC standards still apply.

What is the minimum temperature for applying Carboguard 690?

Carboguard 690 can be applied at surface temperatures as low as 20°F (-7°C) — one of the lowest cure temperatures in the industrial epoxy category, enabled by its phenalkamine chemistry. Between 20–40°F, cure is slow and recoat windows are extended. Always consult the TDS cure schedule for your temperature.

Can Carboguard 690 be used for CUI (Corrosion Under Insulation)?

Yes — Carboguard 690 is designed for CUI service on steel piping and vessels up to 300°F (149°C). Apply to properly prepared steel before installing insulation. Consult the TDS for surface preparation and DFT requirements for your service temperature.

Why does coverage vary so much at different DFT values?

Coverage is inversely proportional to DFT — double the film thickness and you'll use roughly double the paint. At 16 mils (maximum high-build), one coat consumes about 2.7× more product per square foot than a 6-mil coat. Always size your order for your specific target DFT, not a generic average.