When planning a new kitchen, bathroom, or wet room, most homeowners focus on tile choice, layout, and colour. However, one of the biggest factors in achieving a clean, high-end finish is something you never see once the job is complete – surface preparation.
At JW McDonald Kitchens & Bathrooms Ltd, we regularly work on homes across Borough of Bromley, Clapham, Forest Hills and all across South East London, and uneven walls and floors are one of the most common issues we encounter during renovations.
This guide explains why preparation matters, particularly for brick-effect and metro tile layouts, and how it affects the final result.
Why Brick-style tiling needs perfectly prepared surfaces
Brick-style tiling relies on strong visual lines. The human eye naturally follows:
- Horizontal grout joints
- Repeating patterns
- Straight tile runs
If a wall or floor is even slightly out of level, those grout lines begin to wander and the finished tiling can look uneven even if the tiles themselves are perfectly laid.
This is especially noticeable in:
- Metro tile splashbacks
- Brick-bond bathroom walls
- Offset floor tiling
Why uneven walls & floors are so common
In many South East London properties:
- Walls may bow over time
- Floors may dip or slope
- Corners are rarely square
These issues often only become visible once tiles are dry-laid or lines are set out.
What happens when preparation is skipped
Tiling over uneven surfaces often leads to:
- Grout lines that don’t align
- Irregular cuts at edges
- Stepped or drifting patterns
- A finish that feels “not quite right”
Once tiles are fixed, correcting these issues is difficult and costly.
How JW McDonald Kitchens & Bathrooms Ltd prepares for tiling
Early assessment & planning
Before tiling begins, we:
- Check walls and floors for level and plumb
- Identify problem areas early
- Plan the layout around the space
This allows us to address issues before they affect the tiling.
Wall preparation for tiling
Depending on the condition, walls may require:
- Straightening with bonding or plaster
- Tile backer boards
- Skimming to correct uneven sections
This creates a flat, solid surface for accurate tile alignment.
Floor preparation for tiling
Floors may need:
- Self-levelling compound
- Strengthening or boarding
- Corrections to dips and slopes
Proper floor prep is essential for brick layouts and large tiles.
Accurate Setting Out
Once surfaces are prepared:
- Tile positions are marked
- Centre points are established
- Cuts are planned evenly
This ensures symmetry and clean grout lines.
Why preparation is a ‘smart investment
While preparation adds time and cost, it:
- Prevents installation failures
- Reduces tile wastage
- Improves durability
- Delivers a premium finish
Quality preparation protects your investment.
Our advice to homeowners
If your installer recommends preparation work before tiling, it’s because they want the job done properly.
At JW McDonald Kitchens & Bathrooms Ltd, we believe the best tiling results start with the right foundations.
About JW McDonald Kitchens & Bathrooms Ltd
JW McDonald Kitchens & Bathrooms Ltd specialises in complete kitchen and bathroom renovations across the Borough of Bromley, Dulwich, Clapham, Forest Hill & other parts of South East London. Our approach focuses on planning, preparation, and high-quality finishes that stand the test of time.
Planning a tiling project? Speak to the experts
📞 0800 335 7772
📧 info@jwmcdonaldkitchensandbathrooms.co.uk
👉 Contact JW McDonald Kitchens & Bathrooms Ltd today for expert advice and a free estimate.