So a roof terrace is sealed

Roof terraces must be completely impermeable to water, as otherwise severe damage to the masonry can threaten, even endanger the statics of the building in the long term. You can read about how you can possibly seal a terrace yourself and how to use it best.

Background information

Roof terraces should be built by competent specialist companies because of the difficult execution. But even with properly designed roof terraces, leaks can occur over time, especially in older buildings. A quick and effective seal is useful here to prevent damage to the building and the building fabric.

Seal roof terrace itself

Not all sealing work can be done by you, but some also require appropriate technical expertise, especially if there are ready damages that need to be professionally repaired. However, with a little skill, you can make a simple seal yourself, if you take great care in doing so.

As a rule, sealing the terrace requires removing the existing flooring - so if you are planning to lay a new floor covering, such as wooden floorboards or WPC planks, this is a good time to replace a cover that is no longer tight,

The best way to seal the roof is with bituminous membranes and liquid bituminous paint. Particular attention must be paid to edges and joints, which must be absolutely tight. Check with old roof terraces, whether sufficient slope is present, so that no rainwater can stop and long term can lead to waterlogging.

Have refurbishment work carried out better by a specialist

Wherever you already find clearly visible moisture damage, you should better leave the remediation to a specialist. Here, all damage must be really professionally eliminated, in addition, a professional must determine the cause of the leak and also fix it.

Instructions for sealing the roof terrace

  • bitumen sheets
  • bitumen Paste
  • alternatively: Sealoflex coating or liquid bitumen
  • wide brush or puff for Sealoflex sealing
  • Welding machine for bitumen web welding
  • Spatula for filling in inaccessible areas

1. Removal of all old layers

In no case should you apply new sealing layers to old, existing ones. The complete removal of the old bituminous layer is therefore absolutely necessary.

2. Laying the bituminous membranes

The easiest way is the laying of the bituminous layer in the welding process. To do this, apply the bituminous membranes with at least 8 cm offset in several layers. With the welder, the lower layer is warmed up so far that it glues over the entire surface with the layer above it. After warming up the lower panel, place the second panel in the appropriate offset and slightly pinch it.

Inaccessible areas, the wall joint and the edges as well as the bitumen joints are then best secured with bitumen filler.

3rd alternative: liquid paint

You can also use liquid paints as an alternative to laying bituminous membranes - either a bituminous coating or products such as Sealoflex, which are available in different designs and from different manufacturers on the market and are particularly easy to process, but at the same time guarantee a high degree of imperviousness. The job is done simply with the quast. However, you must strictly adhere to the required layer thickness given by the manufacturer at each point.

Tips & Tricks

If your terrace is covered with undamaged tiles and there is no moisture damage to the building, you can waterproof the tile layer by impregnating it. How to do this you can read under terrace seal.

Video Board: DIY Flat Roof Repair - Easy Paint on Fix