Sealing a roof feed-through

Sealing a roof feed-through

PUR Pro is an insulation and mounting foam with low post-expansion. This means that the foam swells by a maximum of 20%, with a very low expansion pressure. It therefore has a filling effect and everything is neatly fastened, but your workpieces aren´t forced out of their place.

PUR Pro is a fire class B1 insulation and mounting foam. That makes it ideal for sealing passages. So you remain in compliance with the regulations on the subject in an easy and cost-effective manner.

Step 1: Preparation

  • Moisten the substrate with the plant sprayer. This will give you a better adhesion. It also shortens the curing time.

Dakdoorvoer dichten_voorbereiding

Step 2: Sealing

  • Shake the can very carefully.

  • Screw the can of PUR Pro onto the gun. See the manual for this.

  • Squirt the foam cautiously, with the valve not too wide open.

  • Inject just less than a filling amount. Thanks to the low post-expansion you can dose correctly.

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Step 3: Finishing

  • You can remove uncured PUR foam with PUR Cleaner and Powerwipes tissues.

  • Curing time (20°C): around 60 minutes.

Dakdoorvoer dichten_afwerking
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