Laying tar paper properly - that's how it works

Tar paper comes flat on the roof - very clear. However, how exactly this works, so that at the end actually a rain-tight roof surface is created, tells you the following instructions.

Tar paper is not equal to tar paper

In the past, tar paper was a material that was not exactly healthy and had a low environmental impact, simply coated with all kinds of tar-containing substances. Today, you do not have to worry about modern products anymore.

However, there are not only "the" tar paper, but usually a variety of quite different products with different properties. Detailed advice on the purchase is worthwhile here in any case.

In general, tar paper is applied in two staggered layers, or the overlaps are covered with bitumen welds to actually produce imperviousness to the rain. So you also need a sufficient amount of the right material.

What you still have to think about

  • the direction of laying: this is important to prevent possible waterlogging
  • the eaves panel if you want a nice finish
  • Your own safety when working - there are numerous safety guidelines that you should follow

Mount snow guard - this is how it's done professionally

  • roofing felt
  • Roofing felt pins
  • Bitumen sheeting
  • Welding machine for the welding tracks
  • hammer
  • preferably a helper

1. Attach the first layer

Cut the roofing felt about 15 cm overhang and attach the first sheet from the lowest point of the roof. The second track should then overlap at least 10 cm and is also nailed. So cover the entire roof


2. Second layer - or sealing

Depending on the type of tar paper you are using, you either have to apply a second layer, which you then weld at the edges where a welding line is present, or you use a bitumen welding line as the second layer.

3. Apply welding tracks

Warm up the cut-to-length welding tracks, piece by piece, while your assistant rolls out the welding track and locks in place. This then creates a completely dense second coverage.

Tips & Tricks

There is also roofing felt, which contains at the edges of welding tracks - also here you should apply in any case a second layer, the edges can then be welded at the overlapping places accordingly. But be careful and do not overheat.