How Many Tiles May You Need?
For a 5m x 4m hallway with 150 x 150mm tiles, our estimate suggests you may need around 941 tiles to cover the 20m² floor area, including an allowance for waste and cuts. As a hallway sees regular foot traffic, durability is a key consideration when selecting tiles and adhesive. A hardwearing porcelain tile is often a good choice for this space. This guide walks you through the key considerations for tiling your hallway floor.
Tiling a Hallway: What to Know
Your hallway is the first impression visitors get of your home, and it endures more foot traffic than almost any other room. Choose a hard-wearing porcelain tile rated PEI 4-5 that can cope with grit from shoes, pushchairs, and pets. Darker tones or patterns are practical for hallways as they disguise dirt between cleans. If your hallway is narrow, laying tiles on the diagonal or choosing a plank-format tile laid lengthways can create the illusion of extra width.
Working With a 20m² Floor Area
At over 16m², your hallway is a substantial tiling project. For areas this size, it is worth hiring a professional tile cutter (either a wet-cut table saw or a large-format manual cutter) as a basic score-and-snap cutter will struggle with the volume of cuts needed. Plan your work in sections, completing one area before moving to the next, and consider leaving expansion gaps at room perimeters to accommodate seasonal subfloor movement. For ground-floor rooms, check that the screed is fully cured and dry before tiling — a simple cling film test overnight will reveal any residual moisture.
About 150 x 150mm Tiles
150x150mm tiles are a classic small-format size that was the standard for UK bathroom floors for decades. They are easy to handle, simple to cut with a basic score-and-snap cutter, and create a traditional look. This size is forgiving on slightly uneven floors because each tile spans a small area. They are available in a huge range of colours and patterns, and mixing two contrasting colours in a chequerboard pattern is a timeless design choice for hallways and period properties.
How to Measure Your Hallway
Accurate measurements are the foundation of any successful tiling project. Measure the length and width of your hallway at the widest points, as most rooms are not perfectly rectangular. Work in metres for consistency with tile coverage calculations. For rooms with alcoves or recesses, break the space into rectangular sections and add them together. To check your room is square, use the 3-4-5 triangle method: measure 3 metres along one wall, 4 metres along the adjacent wall, and the diagonal between should be 5 metres. If the room is out of square, you may need to plan your tile layout to minimise awkward cuts at the edges.
Choosing 150 x 150mm Tiles for Your Hallway
Smaller tiles like your chosen 150 x 150mm size are excellent for compact rooms and spaces with curves or awkward shapes, as they follow contours more easily. They also provide better grip underfoot due to the increased number of grout lines, making them a popular choice for utility spaces. The trade-off is more grouting work and longer installation time. Always order a few extra tiles beyond the estimated amount in case of breakages during cutting or for future repairs.
Tile Layout Patterns
The two most common floor tile layouts are straight (grid) and diagonal (diamond). A straight layout is simpler to install and typically requires around 10% extra tiles for waste from cuts at the edges. A diagonal layout creates a more dynamic look but increases waste to approximately 15%, as more cuts are needed where tiles meet the walls at an angle. Brick bond (staggered) is another popular alternative that adds visual interest without the extra waste of a diagonal layout. With a larger floor area, you have the freedom to experiment with diagonal or herringbone patterns that can add real character to the space. Whichever pattern you choose, always dry-lay a few rows first to check the look before committing with adhesive.
Suggested Materials
Based on your 5m x 4m hallway (20m²), the estimated quantity is approximately 941 tiles, around 100kg of adhesive (roughly 5 x 20kg bags), and approximately 20kg of grout (roughly 4 x 5kg bags). A standard flexible floor tile adhesive will work well for this space. Rapid-setting varieties allow you to grout the same day, which is convenient for rooms you need to use quickly. Always buy slightly more than estimated to account for any wastage during mixing.
Installation Tips
Start by finding the centre of your hallway and snapping chalk lines to create a cross. Begin tiling from the centre outwards so that any cut tiles at the edges are symmetrical. Use tile spacers to maintain consistent grout joints and check your work regularly with a spirit level to ensure tiles are flat and even. Smaller tiles like these are often available on mesh-backed sheets, which can speed up installation significantly. If using individual tiles, a good pair of tile nippers will help with small cuts. Allow the adhesive to cure for at least 24 hours before grouting, and avoid walking on the tiles during this time.
Estimated Cost
Tile prices in the UK vary widely depending on material and finish. For your 20m² hallway, budget tiles typically cost between £10-20/m² (£200-400), mid-range options run £20-40/m² (£400-800), and premium tiles can be £40-80/m² (£800-1600). Adhesive costs around £15-25 per 20kg bag (£75-125 for your project), and grout is approximately £8-15 per 5kg bag (£32-60). If you need a wet tile cutter, hire is typically around £30 per day. In total, you might expect to spend between £337 and £1815 depending on your tile choice and whether you hire tools.