Do-it-yourself flat roof waterproofing with liquid plastic - we are your reliable partner!
The theoretical and practical experience of PUR-Protect sro is at your full disposal.
Thanks to our experience in flat roof renovation, we're familiar with almost all types of damage. Benefit from this and let us advise you!


Using the following example of a flat roof renovation, we'll show you how easy it is. If you follow the steps outlined in our instructions, you'll end up with a successful roof waterproofing.

 

 

Every roof renovation begins with a thorough cleaning of the roof covering using a pressure washer. Dirt prevents adhesion to the substrate, and the result would be disastrous.
Before working on the entire area, the roof edges and roof penetrations should be prepared. This is particularly important for the connection of the parapet to the roof surface. Depending on the height of the parapet, the user should select a fleece width that extends from the top edge of the parapet to at least 15 cm of the roof surface. During subsequent roof renovation, the fleece from the roof surface can then be attached to the fleece from the roof edge.
Likewise, all roof penetrations such as ventilators, inlets and skylights are fully reinforced before the surface reinforcement.
Installing the full reinforcement is relatively simple. Apply the liquid plastic slightly wider than the reinforcing fleece to be laid – this is crucial for a strong bond to the substrate. If you apply too little liquid plastic, the liquid plastic will be absorbed by the reinforcing fleece, leaving too little on the underside of the fleece. Keep the area to be applied only as large as you can work on quickly. Then apply the fleece, free of bubbles and wrinkles, and rub it in with a roofer's broom until the liquid plastic is completely saturated. The correct amount is applied when the previously white fleece turns gray after brooming. You should then recoat the fleece with a broom or airless sprayer.
The next section is again generously coated with liquid plastic, overlapping the previously laid membrane by about 5 cm. Once the surface is completely free of bubbles and wrinkles, the next coat is applied with a broom. Once the installed area is complete and ready for walking – approximately 3-4 hours (depending on weather conditions) – the entire roof receives a final coating.

 

The result:

​If you follow these steps carefully, your finished roof should look like the one shown in the pictures.
With 3 kg/m², you've achieved a sufficient layer thickness. If you've used less than 3 kg, we strongly recommend applying the remaining material to your roof!
All material tests with our liquid plastic at the Materials Testing Institute were carried out at 3 kg/m²!
The layer thickness is therefore crucial for the durability of the seal!