How Many PVC Rolls Do I Need? Strip & Roll Calculation

Quick answer: To work out how many PVC rolls you need, first find how many strips cover the door, then multiply by the door height. With the usual 50% overlap, each strip covers half its own width: a 200 mm strip covers about 4 inches of door, a 300 mm strip about 6 inches and a 400 mm strip about 8 inches. Strips = door width ÷ coverage per strip, rounded up. Metres of PVC = strips × door height in metres. A standard Chronovex roll is 50 m, so divide the total metres by 50 and round up.

This guide walks through the method, gives worked examples for common door sizes, and lists current roll prices so you can plan a purchase or check a quote.

When to buy rolls instead of a complete set

A complete set comes cut to size with hanger hardware and is priced per sq ft. Rolls suit buyers who:

• have many doors and their own installation team;
• already have hanger rails and only need to replace worn strips;
• want spare strips in stock for quick replacement in busy areas.

Rolls do not include hardware. If you are fitting new doors, add a hanger set per door, such as the SS304 hook-on set or the CRC hook-on set.

Step 1: Choose the strip width

PVC rolls come in 200 mm, 300 mm and 400 mm widths. Wider strips are stiffer and hang better across larger openings; narrower strips are lighter and easier to push through on small doors. As a general guide:

• 200 mm — small doors, AC rooms, shop and kitchen doors.
• 300 mm — standard factory, warehouse and godown doors.
• 400 mm — tall or wide openings such as loading docks.

If you are unsure, send the door size on WhatsApp and we will suggest the width and thickness. Our thickness guide explains when to choose 2 mm or 3 mm.

Step 2: Count the strips

Strips are hung with 50% overlap so that there are no gaps when they close. That means each strip adds half its width to the coverage:

Formula: strips = door width in inches ÷ coverage per strip, rounded up to the next whole strip.

Step 3: Work out the metres and rolls

Multiply the number of strips by the door height. Convert feet to metres by multiplying by 0.3048 (7 ft = 2.13 m, 8 ft = 2.44 m, 10 ft = 3.05 m, 12 ft = 3.66 m).

Metres = strips × height (m). Rolls = metres ÷ 50, rounded up. Keep a small margin for trimming the strips to sweep the floor, and remember that a strip cannot be joined: each strip must come from one continuous length of roll.

Worked examples

The second and third rows show why it is worth calculating for all doors together: one 6 × 7 ft door uses about half a roll, so two such doors need just over one roll and you should order two.

Roll prices at Chronovex

Prices for the clear transparent PVC roll, normal grade, per 50 m roll, GST included:

Mix DOP and DOP grades cost more and stay softer for longer. Other rolls follow the same counting method:

• Polar grade roll for cold rooms — 50 m, from ₹6,509.
• Magnetic PVC roll — note that this roll is 30 m, not 50 m; ₹18,149 per roll, 200 mm or 300 mm.
• Ribbed, amber and opaque rolls — see each product page for prices.

Each roll product page also has a roll calculator: enter your door sizes and it shows the metres and rolls needed.

Common mistakes when ordering rolls

• Calculating without overlap. Strips hung edge to edge leave gaps as soon as they move. Plan for 50% overlap.
• Forgetting the leftover length. If a roll has 10 m left and your door is 2.13 m high, you get four strips, not 4.7. Count whole strips per roll for tall doors.
• Using the magnetic roll length as 50 m. Magnetic rolls are 30 m.
• Ordering rolls but no hardware for new doors. Each new door needs a hanger rail with hook-ons.
• Choosing thin strips for forklift traffic. Heavy traffic wears 2 mm strips quickly; 3 mm or ribbed strips last longer.

For a door-by-door price including hardware, the PVC strip curtain price guide and the strip curtain calculator give the complete-set price.

Frequently asked questions

How many strips are in one 50 m roll?

It depends on the door height. For a 7 ft (2.13 m) door, one 50 m roll gives 23 strips. For a 10 ft (3.05 m) door, it gives 16 strips.

Can I mix strip widths on one door?

It is better not to. Strips of the same width and thickness hang evenly and overlap consistently.

Do you cut rolls to size?

Rolls are supplied as full rolls. If you want strips cut to your door height with hardware, order the complete set instead.

Need help with quantities? Send the width and height of each door on WhatsApp to +91 99977 78202. We will work out the strips and rolls and send a GST quotation.