1 November 2026 7 min read Older homes
Tiling an old Herefordshire house starts with what’s behind the wall and under the floor, not the tiles themselves. Three problems come up again and again: lime plaster that modern adhesive won’t grip, suspended timber floors that flex, and walls that have never been truly square. None of them rule tiling out — they just mean more preparation before anything goes up.
Lime plaster walls
Lime plaster is soft, breathable and moves slightly with the season — exactly the opposite of what a rigid modern tile adhesive wants to bond to. You’ll usually find it in anything built before the 1920s: it sounds slightly hollow and a little soft when you tap it, compared to the dense, even knock of modern plasterboard or sand-and-cement render. Pull a tile off a lime wall a year after it’s gone up with the wrong adhesive and it often comes away with a disc of plaster stuck to the back, because the adhesive gripped the plaster harder than the plaster was holding onto the wall behind it.
The usual fix is to board the wall out on battens rather than tile straight onto the lime, so the tile adhesive is bonding to a stable, flat board, not a living, breathing wall that’s still letting moisture pass through it the way it was designed to over a century ago. Sealing lime plaster behind a non-breathable board without that gap can trap moisture in the wall instead of fixing anything. covers how to spot lime plaster and what goes on it in more detail.
Suspended timber floors
Many Herefordshire terraces and older cottages have a timber floor suspended over a void rather than a solid concrete slab, and timber flexes — more than most people expect, and more under a tiler’s weight during the job than once it’s finished. A simple way to check is to walk slowly across the room while someone else watches a glass of water, or just feels for movement through their feet near the centre of the span between joists. Tile straight onto boards that flex and the grout cracks within months, usually in a dead straight line following a joist or a board joint, because that’s exactly where the movement is concentrated.
The standard fix is overboarding with plywood or backer board screwed down properly, or a decoupling membrane designed to absorb that small amount of movement before it ever reaches the tile. Which one we use depends on how much the floor moves, how much height you can afford to lose, and whether you’re planning on a large-format tile that needs a flatter, stiffer base than a smaller one does. goes into the options for this in full.
Walls that aren’t plumb: setting out by eye
Almost no wall in a house built before the 1960s is perfectly vertical, and plenty aren’t perfectly flat either. If you tile strictly to the wall’s own lines, the result looks obviously wrong — tiles that taper, grout lines that drift, a last row that’s visibly thinner on one side than the other. What we actually do is set out from a true vertical and horizontal reference, usually with a laser level, and let any gap between the tile and the wall vary slightly instead — hidden in a corner or behind a bath panel where nobody’s looking, rather than spread evenly across a wall you face every morning. It means dry-laying the first row before anything’s stuck down, checking how the tiles land against doors, windows and corners, and adjusting the starting point if the maths doesn’t work out. It takes longer than tiling straight off the existing lines, but it’s the difference between a bathroom that looks sharp and one where your eye keeps catching that something’s slightly off, even if you can’t immediately say why.
Solid floors with no damp-proof membrane
A lot of older cottages and farmhouses have solid ground floors laid directly on earth or an old lime screed, put down long before a damp-proof membrane was standard practice. Some have a thin layer of old bitumen or tar as a rough attempt at one, and it’s usually degraded by now. Moisture moves up through that floor slowly, and if you tile straight on top — especially with porcelain, which barely absorbs anything — that moisture has nowhere to go but sideways, showing up as staining around the edges, a powdery deposit on the surface, or a musty smell within a year.
Where this is a possibility, we flag it at the quote stage, not once the old floor’s already up, and look at whether a proper damp-proof membrane, a breathable finish, or addressing the source of the damp itself is the right call for that particular house. It’s one of the few things in tiling that’s genuinely better looked at by someone who’s seen it before than guessed at from a set of photos.
Listed buildings and conservation areas
If the house is listed or in a conservation area, check with the council before changing historic finishes — removing original flooring, lime plaster or Victorian tiling can need consent even where the work is hidden once it’s done and nobody but you will ever know it happened. That conversation with a conservation officer can take weeks to come back, so it’s worth starting it as soon as you know tiling’s on the cards, not once a tiler’s already on the calendar. We’re happy to work alongside whatever the council or a conservation specialist has agreed; it’s a conversation worth having before any tiles come up, not after.
What this looks like, house type by house type
| House type in Herefordshire | Typical problem | What we do |
|---|---|---|
| Victorian or Edwardian terrace (Hereford: Whitecross, Barton, St James) | Suspended timber floor that flexes underfoot | Overboard, or fit a decoupling membrane before anything large-format goes down |
| Timber-framed or listed (Ledbury, Bromyard) | Walls rarely square; lime plaster won’t hold modern adhesive | Board the walls out flat; decouple floors that move with the frame |
| Solid stone house (Ross-on-Wye) | Solid walls with no cavity; damp works through over time | Prioritise proper waterproofing and breathable preparation, not just a seal on top |
| Cottage or farmhouse (Leominster and the north of the county) | Solid floor with no damp-proof membrane | Address the moisture before porcelain goes down, not after staining appears |
None of this is specific to one trade problem or another — it’s the pattern behind most “why did my tiling fail” calls we get from older houses, and it’s exactly why we measure up in person rather than pricing an old house the same way as a 2010s new build.
Quick answers
Can I tile directly onto lime plaster if I key the surface first?
Keying the surface — scoring it to give the adhesive something to grip — helps adhesion but doesn’t solve the underlying problem: lime plaster still moves and breathes differently to a rigid tile. Boarding over it on battens is the more reliable fix for anything beyond a very small, light area.
How do I know if my floor has a damp-proof membrane?
There’s no reliable way to tell just by looking at a finished floor. A old, degraded bitumen layer or no membrane at all can look identical to a sound one from the surface, which is exactly why we check this before quoting rather than assuming either way.
Is tiling on uneven floorboards always a problem?
Not always — a little flex under a small tile with a flexible adhesive can be fine. It becomes a problem with larger or more rigid tiles, or where the flex is more than minor, which is why we test it rather than guess from the room’s age alone.
When to call a tiler
If your house is older than about sixty years, it’s worth having someone look at the actual walls and floor before you commit to a tiling job, rather than assuming it’ll be a standard install. We measure up for free anywhere across Herefordshire — from Ledbury and Bromyard to the rest of the areas we cover — and we’ll tell you honestly what the walls or floor need before we quote for the bathroom or floor tiling itself. Get in touch and we’ll arrange a time.