Mortar for masonry heaters

An excellent clay mortar loved by masons


Saviukumaja’s Clay mortars for masonry heaters are designed for laying and repairing the external structures of fireplaces (not to be used in the firebox), chimneys, hot walls, and stove-benches in indoor conditions. Suitable for laying both raw earth and burnt clay bricks, and filling tiles.

Colour range

Dark red, blue. Red, brown, and grey via special order.

Base surface

The stone must be absorbent, have good adhesive properties, and clean from dust, paints, and lubricants (oil, grease, etc.).


We recommend using Saviukumaja’s Finish clay plasters, Fine finish clay plasters, Finish lime plaster or Fine finish lime plasters for post-jointing and overall plastering. If you use Finish clay plaster as the final layer, we recommend applying Saviukumaja’s Primer on the surface. You can also cover your heater with Saviukumaja´s Gekolakt, in order to achieve especially exclusive and unique surface.

Mortar for masonry heaters (0-2 mm)
Download guide Clay mortar for masonry heaters

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