Can You Reglaze a Cracked Sink? Repair Options & When Replacement Is Needed

Raivo Parnasalu
Jan 20
3 min read

Finding a crack in your bathroom or kitchen sink immediately raises a big question: can you reglaze a cracked sink, or does it need to be replaced?

The answer depends on the type of crack, the sink material, and whether the damage is cosmetic or structural. In many cases, a cracked sink can be professionally repaired and reglazed — but there are important exceptions homeowners should understand before making a decision.

This guide explains what sink cracks can be fixed, how reglazing works, and when replacement is the safer option.

Can You Reglaze a Cracked Sink?

Yes — you can reglaze a cracked sink, but only if the crack meets certain conditions.

Sink reglazing works when:

the crack is surface-level
the sink is structurally sound
there is no movement or water leakage
the material is suitable for repair (porcelain, cast iron, some composites)

If the crack compromises the structure or continues to spread, reglazing is not recommended.

Types of Sink Cracks: What Can Be Repaired

Sink before and after repair and professional reglazing

Hairline or Surface Cracks

These are the most common and the most repairable.

often caused by impact or age
usually cosmetic
can be filled, reinforced, and reglazed
ideal candidates for sink reglazing

Small Chips with Cracks

When a chip creates a short crack:

the damaged area can often be rebuilt
the surface can be smoothed and sealed
reglazing restores appearance and function

This type of cracked sink repair is common in porcelain sinks.

Sink Cracks That Should NOT Be Reglazed

Structural or Through-Cracks

These cracks:

go through the sink material
may leak water underneath
often widen over time

Reglazing cannot stop structural failure. Replacement is the safer option.

Cracks Caused by Sink Movement

If the sink shifts due to:

loose mounting
cabinet issues
countertop movement

the crack will likely return even after repair. Structural support must be addressed first.

How Sink Reglazing Repairs a Crack

Professional sink reglazing involves more than coating over damage.

Typical steps include:

deep cleaning and degreasing
crack stabilization and filling
surface rebuilding and smoothing
bonding preparation
professional coating application

This process seals the repaired area and restores a uniform, durable finish.

Cracked Sink Repair vs Replacement

Sink reglazing smooth finish after repair — Smooth, uniform finish after sink reglazing

When Reglazing Makes Sense

crack is cosmetic
sink is otherwise in good condition
replacement would require plumbing or countertop removal
you want a faster, lower-cost solution

When Replacement Is Better

crack is structural or spreading
water leakage is present
sink material is severely compromised

For many homeowners, reglazing is the smart first step — replacement remains an option later if needed.

Common Myths About Reglazing a Cracked Sink

Myth 1: Any Crack Means Replacement

False. Many surface cracks can be repaired successfully.

Myth 2: Reglazing Is Just Paint

Professional reglazing uses bonded coatings designed for wet environments.

Myth 3: A Repaired Sink Won’t Last

When properly repaired and maintained, reglazed sinks can last for years.

See Real Reglazing Projects

Homeowners often want to see real examples before deciding. You can explore sink and bathtub reglazing projects completed in Washington, DC, Fairfax, VA, and Chantilly, VA to see how repaired surfaces hold up after refinishing.

So, can you reglaze a cracked sink?In many cases, yes — as long as the crack is cosmetic and the sink remains structurally sound.

A professional evaluation is the best way to determine whether reglazing will deliver safe, long-lasting results or if replacement is the better option.