Practical home maintenance advice from Lewes Home Works

You notice a small crack in the caulk around your bathtub. You make a mental note to fix it.

A few weeks later, the crack is bigger. Maybe the caulk is starting to peel away. Or you've noticed dark spots that don't disappear no matter how much you clean.

So you buy a tube of caulk, squeeze some over the problem, and call it fixed.

Unfortunately, there's a good chance you'll be looking at the same problem again.

Bathroom caulk isn't just there to make things look finished. In many locations, it helps prevent water from getting into places where it doesn't belong.

When caulk repeatedly cracks, peels, or separates, there's usually a reason.

Here are five common causes.

1. The Surface Wasn't Properly Prepared

This is one of the biggest reasons new caulk fails.

Bathrooms collect soap residue, body oils, cleaning products, and moisture. Even surfaces that look clean may have a film that prevents caulk from adhering properly.

Applying fresh caulk over old, loose caulk can also cause problems.

For a lasting repair, the old material generally needs to be removed, and the surfaces must be thoroughly cleaned and allowed to dry before applying the appropriate replacement.

Homeowner tip: If the old caulk is peeling away easily, putting another layer on top usually won't solve the underlying adhesion problem.

2. The Wrong Type of Caulk Was Used

Walk into a home improvement store and you'll find an impressive selection of caulks and sealants.

Unfortunately, they aren't interchangeable.

Products intended for trim, windows, or general interior painting may not be suitable for areas exposed to frequent water.

Bathrooms typically require a sealant specifically rated for the intended wet-area application and compatible with the surrounding surfaces.

Some products are designed for tub and tile joints, while others have different requirements for adhesion, flexibility, and curing.

Homeowner tip: Check the manufacturer's instructions for where the sealant can be used, what surfaces it bonds to, and how long it must cure before exposure to water.

3. The Tub or Shower Moves Slightly

A bathtub may feel completely solid, but some tubs and shower bases flex slightly when someone steps into them or when they fill with water.

That movement places stress on the caulk joint.

If the sealant isn't flexible enough, the joint is too wide or deep for the product, or the bead was applied incorrectly, cracks can develop.

This is particularly common where the tub meets the wall.

Homeowner tip: If caulk repeatedly separates along the same section of a tub or shower, movement may be contributing to the problem.

4. Moisture Was Trapped Behind the Caulk

Caulk needs the right conditions to adhere and cure properly.

If water remains in a

joint when new caulk is applied, it can interfere with adhesion or contribute to recurring problems.

And if water has already gotten behind the surrounding surfaces, replacing the visible caulk may not address the larger issue.

Signs that deserve attention include:

Soft or swollen trim and baseboards
Loose tiles
Discoloration on nearby walls or ceilings
Persistent musty odors
Caulk that repeatedly fails in the same location
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Homeowner tip: Don't seal over an area that appears to have an ongoing leak or hidden moisture damage. The source of the moisture should be identified first.

5. The Caulk Was Applied Incorrectly

Even the right product can fail when the application isn't right.

Common mistakes include applying too little material, creating an overly thick bead, failing to make good contact with both sides of the joint, or using a joint configuration that doesn't allow the sealant to stretch properly.

Some wider or deeper joints need appropriate backing material rather than simply being filled with more caulk.

And rushing the process can cause trouble.

Many sealants need a specific amount of time before they can be exposed to water. That time varies by product and conditions.

Homeowner tip: Follow the sealant manufacturer's instructions for joint preparation, application, curing, and water exposure.

Is It Just Bad Caulk—or Something More?

Sometimes the solution really is straightforward: remove the failing caulk, prepare the area properly, and apply the correct replacement.

But recurring failure can indicate something else.

If the tub is shifting, the shower enclosure is leaking, or the surrounding materials are deteriorating, a new bead of caulk may only hide the symptoms temporarily.

Caulk is not a substitute for a properly installed waterproofing system.

That's why it's worth understanding why the old caulk failed before replacing it.

When Should You Call a Professional?

Recaulking a small, accessible joint can be a reasonable DIY project for someone comfortable with the preparation and application process.

Professional help may be worthwhile when:

The caulk keeps failing in the same location
You're unsure which sealant is appropriate
The existing caulk is difficult to remove without damaging surrounding surfaces
You notice soft drywall, loose tile, or other signs of moisture damage
You have several bathroom maintenance tasks you'd rather handle together
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If there are signs of a concealed plumbing leak or significant water damage, those issues may require evaluation by an appropriately qualified professional before cosmetic repairs.

Small Repairs Help Prevent Bigger Headaches

At Lewes Home Works, we help homeowners in Lewes and Rehoboth Beach tackle those small maintenance issues that are easy to put off.

From bathroom caulking to household hardware and other minor repairs, we believe in addressing the actual problem rather than simply making it look better for a few weeks.

Because the best small repair is one you don't have to keep doing.

Small jobs. Done right.

Have bathroom caulking or other home repairs on your list?

Visit www.leweshomeworks.com and click Send Your List to tell us what needs attention.

A little list. A lot off your mind.

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Why Bathroom Caulk Keeps Cracking or Peeling

Need Expert Caulking Repairs?

Contact Lewes Home Works for reliable bathroom sealing solutions done right the first time.