DUROCK Brand 3-ft x 5-ft x 1/4-in Waterproof Cement Backer Board 1.0 Sheets

Charlotte Wood Middle School, Danville, California

It was 1991, and our company was framing the entire middle school. The Charlotte Wood Middle School was built out of Douglas Fir Lumber, Pressure Treated Plates, and different kinds of Plywood. I negotiated a contract with a lumber mill in Oregon to provide all the dimensional lumber for the project. I had lumber being delivered from their mill for months. GREAT PROJECT! Rick Aguilar - Cost Estimator

Overview

• What It Is

  • DUROCK Brand 3-ft x 5-ft x 1/4-in Waterproof Cement Backer Board :

    • Brand: DUROCK

    • Size: 3 ft x 5 ft (actual dimensions: 36 in x 60 in)

    • Thickness: 1/4 inch (6 mm)

    • Material: Cement backer board reinforced with fiberglass mesh

    • Waterproof & Mold Resistant: Ideal for wet areas such as showers, tubs, and backsplash installations

    • Applications:

      • Tile substrate for floors, countertops, and walls

      • Underlayment for ceramic tile, stone, or thin brick

      • Suitable for residential and commercial use

    • Durability: Provides a stable, rigid surface that resists warping, delamination, and deterioration

    • Fire Resistance: Non-combustible material, adding safety to installations

    • Ease of Installation: Can be cut with a utility knife or saw; fastens with nails or screws

    • Coverage: One sheet covers 15 square feet

    • Weight: Lightweight design compared to traditional cement board

  Key Features & Performance

  🔑Key Features

  • Waterproof & Mold Resistant – Built to withstand moisture, making it ideal for showers, tubs, and backsplashes.

  • Durable Construction – Cement board reinforced with fiberglass mesh provides strength and stability.

  • Fire Resistant – Non-combustible material adds an extra layer of safety.

  • Thin & Lightweight – At only 1/4" thick, it’s easier to handle and install than traditional cement board.

  • Versatile Applications – Can be used under tile, stone, or thin brick on walls, floors, and countertops.

  • Easy Installation – Cuts with a standard utility knife or saw and fastens with nails or screws.

  • Standard Coverage – Each sheet covers 15 sq. ft. (3 ft x 5 ft).

  ⚙️ Performance

  • Moisture Protection – Maintains structural integrity even in wet areas without swelling or deteriorating.

  • Mold Resistance – Inhibits mold growth for longer-lasting installations.

  • Dimensional Stability – Won’t warp, delaminate, or soften when exposed to water.

  • Tile Bond Strength – Provides a solid, smooth substrate that ensures tiles adhere firmly.

  • Load-Bearing Strength – Strong enough to support heavy stone or ceramic tile finishes.

  • Longevity – Outperforms drywall and other underlayment materials in wet-area durability.

  Best Uses:

  🛠️ Best Uses

  • Shower & Tub Surrounds – Provides a waterproof, mold-resistant surface for tile installations in wet environments.

  • Kitchen Backsplashes – Durable substrate that resists moisture and supports tile behind sinks and stoves.

  • Countertops – Stable base layer for ceramic tile or stone countertops in kitchens and bathrooms.

  • Floor Underlayment – Suitable for tile installations over wood subfloors to prevent cracking and warping.

  • Fireplace Surrounds – Non-combustible material makes it ideal for tiling around fireplaces.

  • Laundry & Utility Rooms – Protects against humidity and water exposure in high-moisture areas.

  • Outdoor Projects – Can be used in certain exterior tile applications (when properly sealed and detailed).

  Practical Project Ideas for Homeowners:

  • 🏡 Practical Project Ideas

    • DIY Shower Remodel – Replace old drywall with DUROCK in a shower surround before installing tile for a long-lasting, waterproof upgrade.

    • Backsplash Installation – Create a sturdy, mold-resistant surface in your kitchen for tile backsplashes that stay secure over time.

    • Outdoor Kitchen Countertop – Build a weather-resistant base layer for stone or tile countertops in an outdoor cooking area.

    • Bathroom Vanity Top – Reinforce your vanity with DUROCK before laying tile or stone for a custom, durable finish.

    • Laundry Room Makeover – Add protection to walls behind washers and utility sinks to guard against splashes and humidity.

    • Fireplace Surround – Use as a safe, non-combustible base for decorative tile or stone around a fireplace.

    • Mudroom or Entryway Floor – Install under tile flooring in high-traffic, wet-prone areas for added stability and crack prevention.

    • Accent Walls – Prepare a solid backing for decorative tile or stone feature walls in living spaces or bathrooms.

• Why Choose - DUROCK Brand 3-ft x 5-ft x 1/4-in Waterproof Cement Backer Board?

  • Trusted Moisture Protection – Unlike drywall or green board, DUROCK won’t swell, warp, or break down when exposed to water. Perfect for showers, tubs, and other wet areas.

  • Superior Durability – Cement construction reinforced with fiberglass provides long-lasting strength and stability for tile, stone, or brick.

  • Mold & Mildew Resistant – Helps keep your home healthier by resisting mold growth in damp environments.

  • Non-Combustible Safety – Fire-resistant material adds peace of mind when used around fireplaces, stoves, or heaters.

  • Lightweight & Easy to Install – At only 1/4" thick, it’s easier to handle and cut than heavier cement boards, while still delivering reliable performance.

  • Versatile Applications – Use it for floors, walls, countertops, backsplashes, and even select exterior projects.

  • Professional Quality for DIY Projects – Delivers the same performance professionals demand, but easy enough for homeowners to use on remodels and upgrades.

  When This Board Really Shines

  • In Wet Areas – Perfect for showers, tubs, laundry rooms, and backsplashes where constant exposure to water and humidity can ruin drywall.

  • Under Tile & Stone – Provides a rock-solid, stable base that keeps floors, walls, and countertops free from cracks and failures.

  • During Remodels – Ideal for replacing outdated or water-damaged backer materials to ensure your new tile installation lasts.

  • In High-Heat Zones – A safe, non-combustible choice for fireplaces, stove surrounds, or areas exposed to heat.

  • For Long-Term Projects – When you want a tile installation that holds up for decades, not just years, DUROCK delivers lasting durability.

  • DIY-Friendly Builds – Its thinner, lightweight design makes it easier to cut, carry, and install, even for first-time remodelers.

  • Indoor & Outdoor Applications – With proper sealing, it’s tough enough for outdoor kitchens, patios, and other exterior projects.

Ask Rick, example:“What’s the best Gypsum Board for this application? or “ When should I use fire-rated (Type X) drywall?”

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