Sheet vinyl: roll widths, seams, pattern match and how much to buy

Bought by the length

Sheet vinyl is sold from rolls of fixed width, most often 12 ft in the US, with 6 ft and 13.2 ft (4 m) also common. The store cuts the length you ask for, and you pay for the full width times that length, usually priced per square yard. So the question is not how many square feet the room is, but how many feet of roll it takes, and that depends on how the room’s dimensions compare with the roll’s width.

A room that fits the roll

If the room’s width is under the roll width, one piece covers it. Run the roll across the room’s shorter dimension or its longer one, whichever needs less length, and add trimming.

A room just over the roll

A room wider than the roll in both directions needs two strips and a seam. The second strip is a full roll width, however little of it the room needs.

Pattern repeat

A patterned sheet, such as a tile or wood print, repeats every so many inches along the roll. When two strips meet at a seam, the pattern must line up, so each strip after the first must start at the same point in the pattern. That costs up to one full repeat of extra length per extra strip.

The sheet vinyl calculator lays the roll both ways and picks the shorter, with the pattern match added. The unit converter turns square yards into square feet when a quote mixes them.

Using the offcut

A 42% offcut is a large piece of floor. If the job includes a closet, a hallway, a laundry or a small bathroom, the offcut may cover it. Measure those spaces before ordering and ask for the job to be cut from one roll so the shade matches. A good dealer will plan the cuts for the whole job together.

Where the seam goes

Put the seam where it will be least seen and least walked on: away from doorways and traffic lanes, parallel to the main light from windows, and never near a tub, shower or toilet in a bathroom, where water would find it. Seams in sheet vinyl are cut double (both layers at once for a perfect match) and sealed with the maker’s seam sealer or, for commercial sheet, heat welded.

Six-foot rolls

A 6 ft roll suits small spaces: a 5 × 8 ft bathroom takes 8.5 ft of a 6 ft roll, 5.7 sq yd, with 11 sq ft of offcut. On a 12 ft roll the same room takes 5.5 ft, 7.3 sq yd, with 26 sq ft of offcut. Not every product comes in 6 ft, and remnants of 12 ft rolls are often cheaper than either.

Installing it

Sheet vinyl can be fully glued, glued only at the perimeter and seams, or loose-laid, depending on the product. Fully glued is the most durable and needs adhesive and a smooth subfloor: every bump and joint shows through. Many installers lay 1/4 inch underlayment plywood first. The sheet is rough-cut a few inches oversize, laid in the room, relaxed, then trimmed to the walls. A paper template is the surest way to fit a bathroom.

Sheet or plank?

Sheet vinyl has one great advantage over plank: in a room that fits the roll, it has no joints at all, so water spilled on it stays on top. That makes it a strong choice for bathrooms, laundry rooms and kitchens where a plank floor’s hundreds of joints are a risk. It costs less per square yard than most plank, but the waste in a room just over the roll width can erase the saving. It is harder to lay well than click plank, because the whole sheet must be cut to fit in one go, and a bad cut cannot be replaced plank by plank. Compare the cost of the roll you would actually buy, offcut included, with the boxes of plank for the same room.

The same arithmetic for carpet

Carpet comes in the same 12 ft rolls and follows the same strips, seams and pattern-match rules. The guide to carpet roll arithmetic covers it, and the carpet calculator does the strips. The units guide explains square yards, and the vinyl plank guide covers the plank alternative, which has no seams but many joints.