Pipe riser sealing compound HTM

Product description

Fireproof special plaster based on cement, lime, and quartz sand for sealing pipe risers from the inside.


  • Does not contain flammable components



  • Sealing domestic wood-heated, rock material (e.g. tile, lightweight aggregate, concrete) based fireplace flues and air ducts from the inside
The product is listed in the portal for building products that can be used in Nordic Swan Ecolabelled buildings.

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EAN code Product name Product number Package size
6416841531087 Pipe riser sealing compound HTM 53108 25 kg


Work instructions

Add the dry material into the water pouring it slowly and simultaneously mixing it. A concrete mixer or power drill whisk can be used for mixing. With the power drill whisk, approximately 4 minutes of mixing is enough. Let the plaster stand for approximately 10 min. Mix it again for a short while. By remixing, the correct plasticity of the compound is sought by adding the final amount of water. It is not recommended to add the maximum amount of water right at the start.

Sealing work of pipe risers requires special tools.

After treatment

Before the pipe riser is brought into use, it is allowed to dry for at least two days.

Waste handling

Storage and handling of waste. See the separate storage and disposal instructions https://www.fescon.fi/en/material-bank

Technical information

Water requirement appr. 7 l / 25 kg
Finished compound appr. 13 l / 25 kg
Type powder
Colour grey
Maximum grain size

1,2 mm

Package size 25 kg bag

1 year in the original package in a dry location.

Lowest usage temperature


Workability time 2 h

The information is based on tests and practical experience. We cannot affect conditions at the work site so we cannot assume responsibility for the end result affected by local conditions.


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