For installers and owners' associations: from metres to a pallet

For a single roof you can count the metres on your fingers. For an owners' association with four blocks, or for an installer who supplies bird proofing as standard with every installation, it's a different story. Then the questions are how many metres you need per roof, how many rolls that comes to, and at what point a pallet becomes worthwhile.

From panels to metres

The metres follow from the open sides of the panel array, not from the number of panels as such. In practice it usually comes down to the bottom edge plus the two sides; if the top edge is against the ridge, it is already closed. For a quick estimate, this calculation works:

number of panels in the row × width per panel × number of open sides

By default, the size finder assumes 1.70 m per panel, the long side of a standard panel in landscape. If it is in portrait, use the short side. With several rows one above the other, count each row separately, because each row has its own bottom edge.

Round up per roof. If the strip is longer than the side, you bend the end over; shortening it damages the brush. So a little too long is not a problem, while a shortfall means a second trip.

From metres to rolls

This is where larger orders go wrong, because an item is not the same as a roll. The box you order contains several rolls:

• Ø12 and Ø15: a roll is 4 metres. So 4 m is 1 roll, 8 m is 2 rolls, 12 m is 3 rolls.
• Ø20: a roll is 2 metres. So 2 m is 1 roll, 4 m is 2 rolls, 8 m is 4 rolls, 12 m is 6 rolls.

Twelve boxes of 12 metres of Ø20 look like twelve items, but they are 72 rolls. That is more than a full pallet.

When does a pallet become worthwhile?

A pallet holds, per diameter:

• Ø12: 60 rolls, 240 metres in total.
• Ø15: 48 rolls, 192 metres in total.
• Ø20: 48 rolls, 96 metres in total.

The discount applies to your whole order, not per diameter. For each size we calculate what share of a pallet you fill, add those shares together and see how many full pallets that makes. With one full pallet you get 5% off, from two full pallets 10%.

We add them up on purpose, because mixed orders are the rule here. If you order 30 rolls of Ø12 (half a pallet) and 30 rolls of Ø15 (just over half a pallet), together they add up to just over one pallet and the discount kicks in, even though neither size makes a full pallet on its own.

You don't need to request anything for this. In the cart you can see live how full your pallet is, and as soon as you reach 1.00, the discount is applied.

Practical points for projects

• Measure per block, not once for the whole site. Within an owners' association, the mounting system differs from block to block more often than you'd think, and so does the diameter.
• If in doubt, order one size larger. Too thick wedges itself in, too thin leaves a gap.
• Count in rolls when you plan loading space. The breakdown above is the discount rule; for an actual loading plan, count per diameter.
• Working with business prices? Set the switch at the top of the site to excl. VAT and you'll see net prices everywhere. The VAT amount is shown separately at checkout.

Quote or custom order

If you need more than a pallet or two, or deliveries have to be made in phases, just get in touch. For anything smaller, the size finder is quicker: enter your metres or your number of panels and immediately see which combination of rolls works out cheapest.