In homes built before the 1980s, assume old flooring and mastic may contain asbestos until it has been tested.
Clearfield’s housing came largely out of the wartime and postwar expansion around Hill Air Force Base, which means a lot of small houses with one small bathroom. Tiling a compact bath is not a scaled-down version of tiling a large one: there is no room for error in the layout, every cut is visible, and the fixtures take up a proportion of the floor that leaves very little field tile to absorb an out-of-square wall. The other thing these houses bring is history under the surface — original mud-set work, several layers of flooring, and materials from an era when the rules were different.
In a large bathroom a layout mistake is diluted across a lot of tile. In a room eight feet by five it is the first thing anyone sees. The cuts at the walls, where the grout lines land relative to the tub and the vanity, and whether the pattern is centered on the room or on the fixture are decisions that have to be made before anything is set, because they cannot be corrected afterward.
The related problem in old houses is that nothing is square. Walls lean, corners are not ninety degrees, and the floor is rarely flat. A careful installer measures the room before deciding the layout and chooses where to hide the out-of-square — usually against the least visible wall — rather than discovering it at the far end of the room.
Tile size interacts with this. Large-format tile is unforgiving on an uneven substrate and leaves wide awkward cuts in a small room; smaller tile follows an imperfect floor more easily and gives more layout flexibility. That is a practical argument rather than a style one, and it is worth discussing before the tile is bought.
A bathroom floor in a house of this age commonly has several layers: the original flooring, something laid over it in the seventies, and vinyl over that. Tile needs a sound, flat, properly supported substrate, so those layers generally have to come out rather than be covered — which is the point at which what they are made of starts to matter.
Resilient sheet flooring and the black mastic used to stick it down, in houses built before the 1980s, can contain asbestos. So can some old floor tiles. The safe assumption is that they do until a sample has been tested, and the wrong move is to start pulling it up dry to have a look. Testing is inexpensive relative to the alternative.
Once it is open, the subfloor itself gets assessed. Old plank subfloors flex between joists and have gaps; a tile floor set on something that moves will crack, usually along a joist line, regardless of how well the tile was set. Adding a properly fastened underlayment or an uncoupling membrane is what prevents that, and it is not an upsell.
Bathrooms of this era were often tiled in a mortar bed over wire lath, which is a genuinely durable system — much more so than what replaced it. If the original walls are sound, well bonded and not leaking, there is a real argument for leaving them alone, and a surprising amount of postwar tile is still in that condition.
The tests are straightforward. Tapping across the wall tells you where it has debonded, because hollow sounds different from solid. Soft or stained areas, particularly below a shower valve or at the tub joint, point to water that has been getting behind it. Loose tiles and crumbling grout at the corners are a warning rather than a verdict.
Where it has to come out, be prepared for the removal to be the larger part of the job. A mortar bed on lath is heavy and does not come off the studs politely, and rebuilding behind it means new backer board and a proper waterproofing layer — which is better than what was there, but it is a bigger job than retiling over a sound surface.
Less than you would expect. The material cost is small but the work is not proportionally smaller — the layout has to be exact because every cut is visible, the walls in an older house are rarely square, and the fixtures leave very little field tile to absorb that. Small rooms also take proportionally more cutting and detail work, which is the slow part.
Usually not, and it is worth resisting. Tile needs a sound, flat, properly supported substrate, and a floor with three layers of old covering on a flexing plank subfloor is none of those. Important: in a house built before the 1980s, old sheet flooring and the black mastic under it can contain asbestos. Have it tested before anyone starts pulling it up dry.
Not necessarily. Mortar-bed tile over wire lath is a more durable system than most of what replaced it, and plenty of postwar work is still sound. Tap across the wall listening for hollow spots, and look for soft or stained areas below the valve and at the tub joint. If it is well bonded and not leaking, leaving it is a legitimate choice — the removal is the expensive part.
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