When it comes to kitchen and bathroom remodels, one of the most overlooked but critical components is waterproofing behind tile backsplashes. At Design & Remodel Brothers, we’ve seen far too many homeowners pay the price for trusting tile installers who cut corners, especially when it comes to proper waterproofing. In the picture we present to you from one of our projects in Eagle Watch, Woodstock, GA, 30189, you will see our preferred application for this purpose, which is highlighted in red to stand out in case of any other issues that arise during and after installation.
In this blog, we’re breaking down exactly why waterproofing behind backsplashes is almost always required, and why any contractor or installer who skips this essential step is putting your home and investment at serious risk.
Moisture Doesn’t Ask for Permission
Whether it’s a kitchen sink splash zone or a steam-heavy bathroom vanity, water will always find its way into cracks, gaps, and porous surfaces. Grout, caulk, and even tile itself are not waterproof barriers. Over time, without a proper waterproofing membrane or coating behind the tile, moisture can penetrate and begin to damage the drywall, framing, and insulation underneath.
That leads to:
- Mold and mildew growth
- Structural damage
- Peeling paint, bubbling surfaces
- Foul odors
- Costly future repairs
Water doesn’t need a flood to cause damage… slow leaks and daily splashes are enough to rot walls from the inside out.
Why a Backsplash Needs Waterproofing
Most homeowners think of backsplashes as purely decorative. Yes, they add style, but their functional purpose is just as important: protection.
Here are some common backsplash areas that are exposed to repeated water exposure:
- Kitchen sinks – From washing dishes to spraying countertops, the area around your sink is constantly getting splashed.
- Bathroom vanities – Humidity, dripping hands, and daily cleaning create a consistently moist environment.
- Behind cooktops – Even oil, steam, and boiling water contribute to backsplash wear and tear.
- Laundry rooms – Utility sinks and washing machines are known splash zones.
Without waterproofing behind these surfaces, you’re essentially trusting your drywall to be your only defense against moisture, and that’s a mistake.
What Proper Waterproofing Looks Like
A professional installer will always take steps to seal and protect the wall behind your tile. This can include:
- Liquid-applied waterproofing membranes
- Sheet membranes like Schluter®-KERDI or RedGard®
- Cement board or moisture-resistant backing
- Silicone-sealed seams and corners
These materials create a moisture barrier that prevents water from seeping behind your tile, keeping your structure dry and sound for decades.
If your installer tells you it’s “not necessary” or “overkill” for backsplashes, that’s a red flag. In today’s high-humidity, high-use homes, especially with expensive cabinetry and finishes, it’s never overkill. It’s smart building.
Why You Should Walk Away From Any Installer Who Skips Waterproofing
Skipping waterproofing behind a backsplash is not a matter of saving time or money; it’s a matter of negligence. Any installer who omits this crucial step either:
- Doesn’t understand moisture science (a sign of poor training)
- Doesn’t care about long-term durability (a sign of poor ethics)
- Cutting corners to move on to the next job (a sign of poor business practices)
Whichever it is, you should not trust them with your home.
At Design & Remodel Brothers, we believe your remodel should last for years, not crumble from the inside out. We follow building science, manufacturer guidelines, and proven best practices on every project. That means waterproofing isn’t a maybe—it’s a must.
The Bottom Line
If your backsplash installer doesn’t mention waterproofing, ask them why. If they dismiss it, get a second opinion. And if you want a team that treats your home like it’s their own, call Design & Remodel Brothers.
We’re not in the business of shortcuts; we’re in the business of long-term beauty, performance, and peace of mind.
Need help with your kitchen, bath, or laundry remodel?
Reach out today for a consultation and see how our craftsmanship and attention to detail can bring your vision to life, without compromising on the essentials
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