Sealing roof tiles - instructions

A leaky roof always causes problems - but in heavy rain such problems can quickly become acute. The quick help here is the sealing of roof tiles. You can read up on how this works and with what in this article.

Seal roof tiles with special sealants

As a rule, every roof should be inspected at regular intervals and checked for damage. Leaking or damaged roof tiles should also be replaced as early as possible.

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In the event of a sudden downpour on a leaky roof or days of heavy rain, quick help is required. There is also one: special sealants such as Ceresit Blitz-Dicht can repair damaged roof tiles in next to no time and make them leak-proof.

The prerequisite, however, is that the damage is not too great; at around 10 mm, sealing is over. Most sealants can no longer securely close cracks or holes that are larger.

What damage to roof tiles can be repaired with sealants

  • all cracks
  • Holes
  • Gaps, provided they are not larger than around 10 mm (this applies to all damage)
  • as well as leaky seams

Correctly sealing the roof tile - step by step

  • Sealant - such as Ceresit Blitz-Dicht
  • suitable primer if necessary
  • spatula
  • brush

1. Assess damage

First of all, of course, you have to find out which of the roof tiles is damaged and where there are other leaks. Then you should carefully assess the extent and type of damage in order to assess whether a sealant is sufficient as a repair measure.

2. Carefully clean the roof tile

The damaged roof tile must be carefully cleaned before sealing and must be free of dirt, dust and rust.

Particularly porous roof tiles should also be primed.

3. repair damage

The sealant can easily be applied with a spatula. Larger damage usually needs an additional glass fleece for reinforcement, which is placed in a fresh layer of sealant. After a drying time, sealing material usually has to be applied again.

Tips & Tricks It is of course easiest to always have some roof tiles in reserve - in the event of damage, a simple replacement is also sufficient and the costs for sealants can be saved.