Corrugated Sheets

• Is there an underside and top to a corrugated plate?

  Yes. It’s very important that you lay the corrugated sheets with the correct side up to ensure a waterproof seal. The side with the Aquaplan logo on it is the top. The Aquaplan logo is covered at the overlap with the ridge cap or another corrugated sheet. When installed correctly, no logos are visible on your roof. For the black corrugated sheet, the top is the shiniest side.

• Which nails should I use to attach the corrugated sheets?

  Always use Topline nails. They are specially designed with a PVC cover to protect the nail and guarantee a waterproof seal. Each corrugated sheet colour has matching nails in a similar colour.

• How many nails do I need to use?

  Drive a nail in the top of all waves that overlap and all waves on the lower purlin. On the other purlins, nail the corrugated sheet every 2 waves. This amounts to about 20 nails per corrugated sheet at 4 purlins per sheet. The smaller the distance between purlins, the more nails you will need.

• How do I nail the sheets?

  It’s important that you nail vertically through the top of the corrugation. Where 2 corrugated sheets overlap, nail at an angle. Always nail the second wave and the second to last wave before nailing the other waves.

• How do I lay the corrugated sheets?

  Always work from the eaves towards the ridge and against the prevailing wind direction. The lower the roof pitch, the smaller the purlin distance and the larger the overlap of the corrugated sheets. For a pitch of 7° to 10°, use an overlap of 2 waves on the long side of the corrugated sheet and an overlap of 20 cm on the short side. For higher pitches, an overlap of 1 wave on the long side and an overlap of ±15 cm on the short side is sufficient.

• What is the best way to repair a crack in my corrugated sheet?

  The most budget-friendly way to repair a crack is to use a new corrugated sheet. You can cut the corrugated sheet to size and save the rest of it for later. Be sure to slide the new sheet under the higher corrugated sheet or ridge to ensure a waterproof seal. Remove the corresponding nails and nail them back in place afterwards.

• Why do water droplets form underneath the corrugated sheet?

  If you put a car in an enclosed space covered with corrugated sheets, but there is no waterproof layer, the heat from the car will rise and condense as it cools. These droplets adhere to the underside of the corrugated sheets and may drop. This might result in brown spots. We strongly recommend installing a waterproof layer (a vapour barrier) when condensation may occur or if the roof is insulated. In this case, always ensure sufficient ventilation.