Essential Considerations for Using Tile Backer Board Outside Corners
When undertaking tiling projects, attention to outside corners is crucial for ensuring a durable and aesthetically pleasing installation. Tile backer boards, commonly used as a substrate for tile installation, can be employed in these areas with proper techniques.
Choosing the Right Backer Board
Various types of tile backer boards are available, each with its own properties and suitability for outdoor use. For outside corners, consider choosing a board with a high resistance to moisture and water damage, such as:
- Cement backer board: Made of cement and glass fibers, offering excellent strength and water resistance.
- Fiberglass backer board: A lightweight and flexible option with good moisture resistance.
Proper Installation Techniques
Installing tile backer board on outside corners requires specific techniques to ensure a firm bond and prevent water penetration.
- Cut the board: Measure and cut the board to the desired length, ensuring a 90-degree angle.
- Apply thinset mortar: Spread a layer of thinset mortar on the wall and the back of the board.
- Install the board: Press the board into place, aligning the edges and ensuring a level surface.
- Support the board: Use temporary supports, such as braces or wedges, to hold the board in place until the thinset dries.
Reinforcing the Corners
To strengthen the outside corners, consider incorporating additional reinforcement:
- Metal corner bead: A thin strip of metal applied to the corner before installing the tiles, adding stability and preventing chipping.
- Fiber mesh tape: A self-adhesive tape applied over the joint between the two backer boards, preventing cracks and moisture penetration.
Sealing the Edges
After installing the backer boards, it is important to seal the edges to prevent water intrusion:
- Joint compound: Apply a layer of joint compound over the joints between the backer boards and the wall.
- Water-resistant sealant: Caulk the edges of the backer boards with a water-resistant sealant, such as silicone or acrylic.
Conclusion
Properly installing and reinforcing tile backer board on outside corners is essential for a successful tiling installation. By choosing the right materials, following proper techniques, and incorporating additional support and sealing, you can achieve durable and visually appealing results that will withstand outdoor conditions.
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