Selling Roofing Felt by Roll or by Square Metre
Selling by roll is straightforward; selling by nominal square metre helps compare different lengths. Make both units clear so a customer comparing an 8 m roll with a 20 m roll understands the offer.
By Merily Waterproofing · Bulk supply for importers, distributors and building-material wholesalers
State the roll before the area price
Show width, length, roll mass and packing beside the price. For a 1 m × 20 m roll, nominal area is 20 m²; for a 1 m × 7 m roll it is 7 m².
The area price does not describe asphalt content, strength or an approved roofing system. Keep those requirements separate.
Separate nominal coverage from project use
Do not promise that the printed area will cover the same amount of finished roof. Overlaps, cuts and the specified assembly can change purchasing quantities.
When a contractor asks for a net area, obtain the project’s purchasing allowance rather than inventing a universal overlap factor.
Use the same unit through the transaction
Your catalogue can show both roll and nominal area prices, but the quotation and invoice should identify the actual sales unit and quantity. Confirm whether the buyer expects whole rolls.
Give branch staff a common conversion reference so they do not compare a per-roll price with a per-m² price as though they were equivalent.
Put it in your buying record
| Format | Nominal area | Wholesale price description |
|---|---|---|
| 1 m × 7 m | 7 m² | Price per complete roll |
| 1 m × 8 m | 8 m² | Roll price ÷ 8 for nominal m² |
| 1 m × 20 m | 20 m² | Roll price ÷ 20 for nominal m² |
| Project requirement | Net area supplied by buyer | Allowance confirmed by project |
Questions buyers ask
Which sales unit is best?
Use the unit your buyers understand, with the complete roll specification shown beside it.
Can I compare different weights per m²?
Only alongside dimensions, mass basis and relevant product requirements.
Should an invoice say m² or rolls?
Use the agreed sales unit and make the relationship to complete rolls explicit.