Tile and joints

4 questions

Tiles and joints: how to choose tiles and calculate the quantity?

The selection of ceramic tiles and the precise calculation of their quantity are the foundation of a successful bathroom, kitchen, or hallway renovation. When it comes to tiles and joints, it is always best to start by creating a simple step-by-step plan that includes defining your end goal, calculating the total budget, setting strict deadlines, and making a preliminary list of required materials.

To avoid mistakes in purchasing volume, the calculation should not be based on the "net" area of the walls or floor, but with a mandatory allowance for trimming and possible breakage during transport and installation. For simple straight installation, a 10 percent margin of the total area is usually added, and for diagonal installation or herringbone patterns, this figure is increased to up to 15 percent.

Be sure to take into account the format of the selected material, as large tiles require fewer joints, but produce a greater volume of offcuts in non-standard areas. Always buy tiles from the same batch, checking the tone and caliber numbers on each box, otherwise the shades of the elements may noticeably differ on the wall.

After completing the calculations, take small iterations and check the result at each step, starting from the purchase of adhesive compositions and ending with the choice of grout. Such a systematic approach helps to avoid unnecessary trips to the hardware store and protects you from financial losses due to running out of a couple of elements at the very end of the renovation.

The modern market offers a huge assortment of tiles, so focus not only on the exterior design, but also on technical characteristics, such as the wear resistance class for the floor and the moisture absorption coefficient. Take into account the operating conditions of the room so that the coating serves for many years without losing its original appearance.

Tiles and joints: how to prepare the base and layout before installation?

High-quality base preparation and precise layout before tile installation determine the appearance and durability of the entire finish coating. In practice, for tile work, it is recommended to create a detailed checklist that includes a list of what needs to be bought, what parameters to measure, and which related trades to coordinate hidden utilities with to prevent rework and budget overruns.

The first stage of preparation consists of leveling the walls or floor using cement plasters and self-leveling compounds, since level differences of more than 2-3 millimeters are unacceptable. The base must be solid, dry, and thoroughly primed in two layers to improve the adhesion of the tile adhesive to the surface.

The second important step is to perform the correct geometric layout of the room using a laser level and a tape measure.

Determine the most prominent wall or focal point from which the installation of whole elements will begin.
Find the center of the room and draw perpendicular axes to symmetrically distribute the cut pieces in the corners.
Draw horizontal and vertical guidelines on the walls, taking into account the thickness of the tile joints.

Before starting the main work, lay out the tiles "dry" without glue on the floor or wall to evaluate the pattern and avoid narrow ugly cuts near doors or corners. Careful adherence to this algorithm ensures that the finished cladding will look harmonious and hold firmly to the base.

Tiles and joints: how to cut tiles and make neat corners?

Professional tile cutting and the formation of neat external and internal corners require specialized tools and strict adherence to safety regulations. When working with tiles, there is an iron rule: first, you need to completely deal with safety and engineering networks, such as electrical wiring, water pipes, and ventilation, and only then proceed to finishing and decor to minimize hidden problems.

For a straight cut, a mechanical tile cutter is used, which scores the glaze and then breaks the tile along the line with a light press. For complex shaped cutouts for pipes, sockets, or switches, manual "ballerina" nippers, water-cooled electric tile cutters, or an angle grinder with a diamond blade are used.

The formation of beautiful external corners can be done in three main ways depending on your experience and design project:

Using plastic or metal corner profiles (trims), which mask the edges and protect them from chipping.
Beveling the tile edges at a 45-degree angle using a wet saw or grinder for joints without a visible profile.
Overlapping the tiles, which is used less frequently and requires ideal flatness of the material.

When working with cutting tools, always wear safety glasses, a respirator, and gloves, as ceramic dust and small shards are hazardous to health. Do not forget to grind the cut edges with a diamond block or 120-220 grit sandpaper to remove sharp burrs and make the joints aesthetic.

Tiles and joints: how to grout joints and protect them from mold?

Joint grouting and their subsequent protection against moisture and mold is the final stage of cladding work, which gives the surface a finished and neat look. For tiles and joints, the 80/20 rule works great: first, solve two or three main problems related to waterproofing, ventilation, and the cleanliness of the base, and only then improve the small details of the interior.

Before applying the grout, thoroughly clean the joints from leftover tile adhesive, dust, and remove plastic cross spacers to a depth of at least a third of the tile thickness. Prepare the grout mixture strictly according to the manufacturer's instructions, using clean water and a low-speed mixer to avoid the formation of air bubbles.

Apply the composition with a rubber spatula, moving diagonally relative to the joints to press the mixture deep into the space between the tiles and fill all voids. Remove excess grout with the same spatula, holding it at a 90-degree angle to the surface so as not to wash out the fresh mortar from the joints.

After the grout begins to matte and set, usually in 15-30 minutes, gently wipe the cladding with a damp sponge, rinsing it frequently in clean water. To protect the joints from moisture, dirt, and the appearance of fungus, treat them after complete drying with a special silicone sealant or a deep-penetrating protective impregnating compound.