Tile flooring has been a favorite among homeowners for generations, and it's easy to see why. It's tough, water-resistant, easy to clean, and available in an enormous range of styles, colors, and sizes. But as beautiful as tile can be, a poor installation can turn a dream floor into a frustrating nightmare. At Kory's General Contracting, we've seen it all — and we want to help you understand what makes the difference between a tile floor that lasts decades and one that starts failing within a year or two.
Preparation Is Everything
The single most important factor in any tile installation is the condition of the subfloor beneath it. Tile is rigid, and it needs a stable, flat, and solid surface to bond to. If the subfloor flexes, shifts, or has high and low spots, your tile will crack and your grout will crumble no matter how well the tile itself is laid. Before any tile goes down, the subfloor needs to be inspected for soft spots, squeaks, and levelness. In most cases, a layer of cement backer board is installed over the subfloor to provide the ideal surface for tile adhesion. Skipping this step is one of the most common mistakes we see in DIY tile jobs.
Planning Your Layout Before You Start
One of the best things you can do before mixing a single bag of thinset mortar is to dry-lay your tile across the floor without any adhesive. This lets you plan your layout so that you avoid awkward cuts along the walls, ensure your grout lines are consistent, and center the tile pattern in a way that looks intentional and balanced. Starting your installation from the center of the room and working outward is a tried-and-true method that helps keep everything aligned. Taking the time to plan your layout carefully can make the finished floor look dramatically more professional.
Choosing the Right Mortar and Adhesive
Not all thinset mortars are created equal, and using the wrong one can lead to tiles that pop loose or crack over time. Large-format tiles, for example, require a medium-bed mortar that provides better support across the full back of the tile. Mosaic tiles have different requirements than 12x24 porcelain planks. Always read the manufacturer's recommendations for both the tile and the adhesive, and don't be tempted to cut corners by using a basic adhesive for a job that calls for something more heavy-duty. In wet areas like bathrooms and laundry rooms, a waterproofing membrane beneath the tile is also a smart investment.
Spacing and Grout Lines
Grout lines are more than just a finishing detail — they serve an important functional purpose. Proper spacing allows for natural expansion and contraction of the tile as temperatures change, which helps prevent cracking. The size of your grout joint will depend on the type of tile you choose and the manufacturer's recommendations. Rectified tiles with very precise edges can be installed with very thin grout lines for a sleek, modern look, while natural stone and handmade tiles typically require wider joints to accommodate slight variations in size. Whatever spacing you choose, consistent grout lines make the difference between a floor that looks polished and one that looks amateurish.
Grouting and Sealing Done Right
Once your tile is set and the mortar has fully cured — usually at least 24 hours — it's time to grout. Mix your grout to a smooth, peanut butter-like consistency and work it into the joints using a rubber float, pressing firmly at a diagonal angle to pack the joints fully. Remove excess grout with a damp sponge before it hardens, and buff the haze off the tile surface with a clean cloth once the grout begins to dry. After the grout has cured completely, applying a quality grout sealer will protect against staining and moisture infiltration, keeping your floor looking great for years to come.
Knowing When to Call a Professional
Tile installation can absolutely be a DIY-friendly project for someone with patience, the right tools, and a willingness to learn. But there are situations where professional installation is clearly the better choice. Large open-plan areas, heated floor systems, complex patterns like herringbone or diagonal layouts, and any installation over a problematic subfloor all benefit greatly from experienced hands. A professional installer will also have access to commercial-grade tools like wet saws and laser levels that make a significant difference in the final result.
At Kory's General Contracting, we take pride in delivering tile installations that are built to last and beautiful to live with. We serve homeowners throughout Vancouver, WA and the greater Portland, OR area, and we'd love to help you bring your flooring vision to life. Whether you're ready to get started or just want to talk through your options, give us a call — we're always happy to help.