What is the coverage rate for Carboguard 510 SG?

A 3-gallon mixed unit of Carboguard 510 SG yields approximately 39 ft² at 1/8" thickness per the PDS. Coverage is volume-based — deeper fills cover less area per kit. Extrapolated: ~19 SF at 1/4" (the normal per-coat thickness), ~13 SF at 3/8", ~10 SF at 1/2". Thicknesses greater than 1/4" per coat may require special application techniques per the PDS.

Carboguard 510 SG Epoxy Surfacing Mortar

Q: Does Carboguard 510 SG always need to be topcoated?

Not always. Per the PDS, Carboguard 510 SG may be coated with Vinyl Esters, Epoxies, Polyurethanes, or Polyureas depending on exposure and need. A topcoat is recommended for chemical/immersion service, UV exposure (epoxies may chalk in sunlight), and potable-water tanks (requires an NSF-approved lining). For general patching and resurfacing without aggressive exposure, a topcoat may not be required.

Q: What does the 'SG' in Carboguard 510 SG stand for?

SG stands for Spray Grade. The product is formulated for spray application using hopper-fed piston or rotor-stator pumps capable of 600 psi fluid pressure and 6 GPM output, with 1" or larger material hoses (no longer than 100 ft) and a nozzle 3/16" or larger. It can also be applied by hand trowel and finished with a damp sponge or rubber float.

Q: Can Carboguard 510 SG be used on steel?

No. Carboguard 510 SG is formulated for concrete and CMU (masonry) substrates only. It is self-priming over concrete and masonry surfaces; it is not intended for steel.

Q: How many components does Carboguard 510 SG have?

Carboguard 510 SG is a three-part kit: Part A (1.5 quarts in a gallon can — liquid epoxy resin), Part B (3 quarts in a gallon can — hardener), and Part C (11 lbs of Portland cement and 32.5 lbs of sand in a 5-gallon pail). Power mix Parts A and B together first. Then slowly add the cement powder, followed by the sand. Power mix until uniform. Up to 6 oz of water may be added once the mix is fully incorporated to aid workability.

Q: What is the pot life of Carboguard 510 SG?

45 to 60 minutes at 75°F (24°C). Higher temperatures shorten pot life. If the mix begins to thicken in the pail during application, simply re-agitate to re-shear and lower the viscosity.

Q: Does the concrete need to be Surface Saturated Dry (SSD) before applying Carboguard 510 SG?

No. Surface Saturated Dry (SSD) conditions are not required. Carboguard 510 SG can be used in damp or high moisture vapor transmitting (MVT) environments, which makes it well suited for concrete repair work where fully dry substrates are not achievable.

Carboline Carboguard 510 SG Epoxy Repair Mortar for Concrete

Carboguard 510 SG Epoxy Surfacing Mortar

by Carboline

$572.04 - $572.04

$572.04

$572.04 - $572.04

$572.04

Carboguard 510 SG Epoxy Surfacing Mortar is an epoxy-modified cementitious repair and surfacing compound engineered by Carboline for durable restoration of concrete and masonry surfaces, especially in demanding wastewater and industrial environments. This high-performance, economical mortar delivers superior bond strength, chemical resistance, and ease of application—ideal for patching, filling voids, and resurfacing deteriorated substrates prior to topcoating with Carboline lining systems.

Color: Dark Gray
Theoretical Coverage: 3-Gallon mixed will yield ~ 39SF at 1/8" thick
Carboguard 510 SG Product Data Sheet >

VIEW THE ENTIRE LINE OF CARBOLINE PRODUCTS HERE>

Key Features:

Superior Bond Strength: Excellent adhesion to concrete and masonry surfaces, even in damp conditions—no Surface Saturated Dry (SSD) required.
Enhanced Chemical Resistance: Epoxy modification outperforms standard cement products, providing protection in aggressive wastewater environments (e.g., H₂S acid attack or microbial corrosion) when topcoated.
Spray-Grade Efficiency: Unique formulation allows fast application by spray, trowel, or hand tools for quick project turnaround and easy repairs.
Versatile Repair Capabilities: Fills voids in new concrete, resurfaces deteriorated areas, patches spalls, and prepares surfaces for topcoats without additional prep.

Typical Applications:

Wastewater Infrastructure: Resurfacing deteriorated concrete in clarifiers, digesters, channels, manholes, and structures exposed to corrosive conditions; topcoat for added protection against H₂S and acids.
Potable Water Structures: Repair and surfacing of concrete storage tanks (when topcoated with NSF-approved systems).
Industrial & Municipal Concrete Repair: Filling voids in new concrete, patching spalled areas, and general resurfacing in treatment plants, floors, walls, and transitions.

The Carboguard 510 SG 3-gallon kit includes 3 components. It is supplied with Part A, Part B, and Part C, including Portland Cement and Sand.

Product type: Epoxy Modified Cementitious Mortar
Carboguard 510 SG has a matte/rough finish suitable for topcoating
Applied via Spray, Trowel, or Hand Tools
Low VOC

Need help with concrete repair or protective coatings?
Contact our customer support today to discuss your project:
(800) 567-5358

Area to cover (sq ft)

Application method

Coats

DFT per coat (mils)

Kit size

Topcoat Options

Topcoat	Service / Use Case
Carboguard 635 VOC	Potable water systems — ANSI/NSF 61 certified
Hydroplate 1086	Potable water tanks & piping — NSF/ANSI 61 & 600 certified
Plasite 4550 S	Chemical immersion (strong acid/caustic) — 100% solids epoxy lining
Vinyl Ester / Epoxy / Polyurethane / Polyurea	Per PDS — choose based on exposure (chemical, abrasion, UV, etc.)

⚠ Topcoat selection is service-dependent. Per the Carboguard 510 SG PDS, topcoats are applied "depending on exposure and need" — required for chemical/immersion, UV-exposed, aggressive wastewater, and potable-water service (which mandates an NSF-approved lining). Confirm compatibility with Carboline Technical Service before specifying.

Recommended Coating Systems

Potable Water Tank — Concrete

Mortar / Resurfacer Carboguard 510 SG Void fill & leveling

→

NSF Topcoat Carboguard 635 VOC ANSI/NSF 61 certified

NSF Lining Hydroplate 1086 NSF/ANSI 61 & 600 certified

Wastewater Concrete Resurfacing

Resurfacing Layer Carboguard 510 SG Spray or trowel

→

Protective Lining Compatible Epoxy / Polyurea Per project specification

Chemical Immersion — Containment

Concrete Repair Carboguard 510 SG Resurface & void fill

→

Immersion Lining Plasite 4550 S 100% solids, acid/caustic

General Concrete Repair

Spall / Void Fill Carboguard 510 SG 1/4" normal per coat

→

Topcoat Epoxy / PU / Polyurea Per service environment

Frequently Purchased Together

Carboguard 635 VOC Immersion Grade Epoxy Kit

ANSI/NSF 61 certified immersion-grade epoxy. Self-primer, intermediate, or finish coat — pairs with 510 SG for potable-water concrete tanks.

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Hydroplate 1086 Epoxy Coating for Potable Water

High-solids polyamine epoxy, NSF/ANSI 61 & 600 certified for potable water tanks & piping. Self-priming, ultra-low VOC.

Shop Now

Carboguard 501 Epoxy Filler for Concrete & Masonry by Carboline

Carboguard 501 Epoxy Filler — 3.6 Gal Kit

100% solids, solvent-free epoxy patching compound for bug holes, voids & narrow cracks. Use alongside 510 SG — 501 for fine defects, 510 SG for larger-area restoration.

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Product Specs — Carboguard 510 SG

Carboguard 510 SG — Spray-Grade Epoxy Modified Cementitious Mortar by Carboline. The “SG” designates Spray Grade.
Three-part, aggregate-reinforced epoxy mortar formulated for patching, void-filling, and resurfacing deteriorated concrete and CMU. SSD (Surface Saturated Dry) conditions are not required — suitable for damp and high moisture vapor transmitting (MVT) environments. Coverage is volume-based (square feet at a given fill depth), not mils-based. Self-priming over concrete and masonry. Trace VOC, water-based, low odor. Acceptable for potable-water concrete storage tanks when topcoated with an NSF-approved lining.

✓ 3-Part Kit (A + B + C aggregate) • ✓ Mixed Volume: ~3.06 gal (≈55 lbs) • ✓ Concrete & CMU Only • ✓ Self-Priming • ✓ SSD Not Required • ✓ Trace VOC (<0.10 lbs/gal)

✏️ Need a project quote? Request Online

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

Carboguard 510 SG by Carboline

Carboguard 510 SG spray-grade three-part epoxy modified cementitious mortar by Carboline — 3-gallon kit for concrete resurfacing — Carboguard 510 SG — 3-Part Kit (Part A resin, Part B hardener, Part C Portland cement & sand)

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 Time

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

Each 3-part kit (Part A, Part B, and Part C aggregate) ships from regional warehouses nearest to your location.

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

Kit size: 3.06-gallon kit • ~55 lbs (25 kg)

Coverage Rates — Volume-Based (Not Mils)

Important: Carboguard 510 SG coverage is calculated by volume (cubic feet), not by mils like standard coatings. The PDS lists one anchor rate — 39 ft² per 3-gallon mixed unit at 1/8” thick — from which the values below are extrapolated. Normal application is 1/4” per coat; thicknesses greater than 1/4” per coat may require special application techniques per the PDS.

Fill Depth	SF per 3-Gal Mixed Unit	Typical Application
1/8 inch	~39 SF/kit (PDS anchor)	Thin skim coat — surface leveling
1/4 inch (normal)	~19 SF/kit	Standard per-coat resurfacing thickness
3/8 inch	~13 SF/kit	Deeper fill — special technique required
1/2 inch	~10 SF/kit	Maximum referenced — special technique required

Property	Value	Notes
Generic Type	Epoxy Modified Cementitious Mortar (Spray Grade)	—
Components	3-part kit — Part A (1.5 qt resin in gallon can) + Part B (3 qt hardener in gallon can) + Part C (11 lbs Portland cement + 32.5 lbs sand in 5-gal pail)	Mix A+B first, then slowly add cement, then sand
Mixed Kit Volume	~3.06 gallons (yields ~39 ft² @ 1/8” thick)	—
Color	Dark Gray	—
Primer	Self-priming over concrete and masonry	—
SSD Required	No — SSD not required	Can be used in damp or high MVT environments
Application Thickness	Normal 1/4” (6,350 microns) per coat	Thicker passes require special techniques per PDS. PDS DFT field lists "0.2 inches" which conflicts with the stated "1/4 inch (6350 microns)" — 1/4 inch is the correct specification.
Application Method	Spray (hopper-fed piston or rotor-stator pumps, 600 psi, 6 GPM, 1”+ hose ≤100 ft, nozzle 3/16”+) or hand trowel	Finish with damp sponge or rubber float
Substrates	Concrete and CMU/masonry ONLY — not for steel	—
Surface Prep	NACE No. 6 / SSPC-SP 13; CSP-4 or greater profile per ICRI; concrete pH ≥ 8.5; profiled area cleaned after prep	CMU mortar joints: cured min. 15 days at 75°F / 50% RH
Pot Life	45–60 minutes at 75°F (24°C)	Re-agitate if mix thickens during application
VOC (As Supplied)	<0.10 lbs/gal (12 g/L) — EPA Method 24	Trace VOC, water-based
Application Temp — Minimum	Material 50°F · Surface 50°F · Ambient 50°F · 0% RH	—
Application Temp — Maximum	Material 90°F · Surface 125°F · Ambient 110°F · 90% RH	In excessive wind/high heat, cover area with polyethylene sheeting
Min Recoat Time (75°F)	12 hours	Finish with damp sponge or stiff brush first to maximize intercoat adhesion
Max Recoat — Solvent-Based Epoxy	60 days at 85°F	—
Max Recoat — 100% Solids Coating	7 days at 85°F	If exceeded, abrade surface before recoating
Light Traffic (75°F)	24 hours	—
Heavy Traffic (75°F)	48 hours	—
Ultimate Physical Characteristics	28 days at 75°F	—
Topcoat Options	Vinyl Esters, Epoxies, Polyurethanes, or Polyureas	Depending on exposure and need
Limitations	Epoxies may lose gloss, discolor, and chalk when exposed to sunlight	—
Potable Water	Acceptable for concrete potable-water storage tanks when topcoated with an NSF-approved lining	Contact your Carboline representative for additional information
Cleanup	Scouring pads and water	Not acetone or solvent-based cleaners
Flash Point — Part A	>200°F (93°C)	—
Flash Point — Part B	>200°F (93°C)	—
Flash Point — Part C	Not applicable (aggregate)	—
Shelf Life	24 months at 75°F (24°C)	Unopened, stored indoors
Storage	50°–90°F (10°–32°C) · Store indoors · Do not freeze	—
Shipping Weight	~55 lbs (25 kg) per 3.06-gal kit	—
Typical Markets	Water & Wastewater · Petrochemical · OEM · Oil & Gas · Commercial & Architectural	—

Coverage is volume-based. Source: Carboline Carboguard 510 SG PDS (March 2025, doc S511) and Product Flyer. Coverage values at depths other than 1/8” are extrapolated from the PDS anchor rate.

Good to Know Before You Buy

⚠️ Critical Notes

Coverage is volume-based — budget kits by fill depth, not area alone. A 3-gallon mixed kit yields ~39 ft² at 1/8” thick. At the normal 1/4” per-coat thickness, that drops to ~19 ft². Doubling the fill depth halves the square footage per kit. Always calculate based on your actual fill depth and plan for multiple coats for deeper repairs.
Short pot life: 45–60 minutes at 75°F. Mix only what your crew can place in that window. Higher temperatures shorten pot life further. If material thickens in the pail, re-agitate to re-shear and lower viscosity — do not discard and re-mix unnecessarily.
Maximum recoat window varies drastically by topcoat type. With an approved solvent-based epoxy topcoat, you have up to 60 days at 85°F. With an approved 100% solids coating, you have only 7 days at 85°F. Confuse these windows and you’ll need to abrade the surface before recoating. Plan your topcoat selection and schedule before applying the mortar.
Do not freeze — storage minimum is 50°F. Unlike solvent-based products that can tolerate cold excursions, Carboguard 510 SG is water-based and will be permanently damaged by freezing. Store indoors at 50°–90°F at all times. Shelf life is 24 months in sealed, unopened containers stored at these conditions.

Frequently Asked Questions — Carboguard 510 SG

How is coverage calculated for Carboguard 510 SG?

Coverage is volume-based, not mils-based. The PDS anchor rate is 39 ft² per 3-gallon mixed unit at 1/8” thick. Extrapolated values: ~19 SF at 1/4” (the normal per-coat thickness), ~13 SF at 3/8”, and ~10 SF at 1/2”. Thicknesses greater than 1/4” per coat may require special application techniques.

Does Carboguard 510 SG always need to be topcoated?

Not always — it depends on service. Per the PDS, 510 SG may be coated with Vinyl Esters, Epoxies, Polyurethanes, or Polyureas “depending on exposure and need.” A topcoat is recommended or required for chemical/immersion service, UV-exposed exterior (epoxies may chalk in sunlight), aggressive wastewater, and potable-water tanks (which require an NSF-approved lining). For general patching and resurfacing without aggressive exposure, a topcoat may not be necessary.

What does the “SG” in 510 SG stand for?

Spray Grade. The product is engineered for spray application using hopper-fed piston or rotor-stator pumps capable of 600 psi fluid pressure and 6 GPM output, with 1” or larger material hoses no longer than 100 ft, and a nozzle 3/16” or larger. It can also be applied by hand trowel and finished with a damp sponge or rubber float.

Can Carboguard 510 SG be used on steel?

No. Carboguard 510 SG is formulated for concrete and CMU (masonry) substrates only and is self-priming over those surfaces. It is not intended or tested for steel.

Does the concrete need to be Surface Saturated Dry (SSD) before applying?

No. SSD conditions are not required. Carboguard 510 SG can be applied in damp or high moisture vapor transmitting (MVT) environments — a key advantage over many competitive products that require dry conditions. The surface must be free of standing water, clean, and properly profiled, but full dryness is not a prerequisite.

How many components does this product have?

Carboguard 510 SG is a three-part kit: Part A (1.5 quarts of liquid epoxy resin in a gallon can), Part B (3 quarts of hardener in a gallon can), and Part C (11 lbs of Portland cement and 32.5 lbs of sand in a 5-gallon pail). Power mix Parts A and B together first. Then slowly add the cement powder, followed by the sand. Power mix until uniform. Up to 6 oz of water may be added once fully incorporated to aid workability.

What is the pot life?

45 to 60 minutes at 75°F (24°C). Higher temperatures shorten pot life. If the mix begins to thicken in the pail during application, re-agitate to re-shear and lower the viscosity. Mix only what the crew can place within the working window.

What is the maximum recoat window?

It depends on the topcoat. With an approved solvent-based epoxy topcoat, the maximum recoat window is 60 days at 85°F. With an approved 100% solids coating, the maximum is 7 days at 85°F. The minimum recoat time is 12 hours at 75°F. If the maximum window is exceeded, the surface must be abraded before topcoating. It is also recommended to finish 510 SG with a damp sponge or stiff brush prior to topcoating to provide a surface profile that maximizes intercoat adhesion.

What surface preparation is required?

Concrete must be designed, placed, cured, and prepared per NACE No. 6 / SSPC-SP 13. Mechanically abrade to achieve a CSP-4 or greater surface profile per ICRI Guidelines. Concrete pH must be at least 8.5 prior to application. The substrate must be structurally sound, free of loose or deteriorated concrete, and the profiled area must be cleaned before application. CMU mortar joints should be cured for at least 15 days at 75°F and 50% RH (or equivalent).