A Polish research team developed the use of self-extinguishing, steam-permeable and water-protected heavy-gauge and continuous thermal insulation layer over churches' and castles' vaults. Beside external insulation, this method removes the disadvantage of water condensation on object vaults and eliminates the peeling of frescoes and dust deposition. Using polyurethane foam enables rainwater protection for frescoes, in case of roof leak. Partnerships with monument conservation firms are welcome.

A Polish research team developed an original way of cleaning monumental vaults based on the use of a heavy-gauge thermal insulation layer over monumental buildings' vaults. This is a multilayer insulation. Internal layers are made of slack structure materials, so it guarantees ventilation. The external, solid and hard layer is based on rigid polyurethane foam with specific properties. This composite is self-extinguishing, steam-permeable and water-protected. It has other advantages:
1) Removes the water condensation on building vaults
2) Eliminates dust deposition on frescoes
3) The wall is allowed to “breathe”
4) The dew point is outside of the wall
5) Almost no heat losses trough the roof - economic advantages
6) Makes a continuous, steam-permeable and water-resistant insulation on towers' and domes' vertical elements possible
7) Absolutely rain and slush water resistant in case of roof leak
The method has been successfully implemented during renovation of the vaults at the Myszkowskis' Chapel at the Dominicans' Basilica, St. Cross Church in Krakow and at the Chapel with Miraculous Our Lady's Picture in Częstochowa. It is possible to work by temperatures over 15 °C. Type and procedure for effective thermal insulation vary according to individual objects' properties.

Innovative Aspects:
It is more than just external insulation of monumental towers and domes in sacral buildings. First of all, it is a method for conservation. Instead of traditionally used water-imbibed materials, the invented method applies a multilayer composite material based on steam-permeable, self-extinguishing, high-thermal-insulation-coefficient polyurethane foam. The invention was award by three golden and one bronze medal on the International Fair of Innovation in: Nürnberg in 2000, Gdańsk in 2001, Moscow in 2002 and Geneva in 2001.

Main Advantages:
1) Removes the water condensation on building vaults
2) Eliminates dust deposition on frescoes
3) The wall is allowed to “breathe”
4) The dew point is outside of the wall
5) Almost no heat losses trough the roof - economic advantages
6) Makes a continuous, steam-permeable and water-resistant insulation on towers' and domes' vertical elements possible
7) Absolutely rain and slush water resistant in case of roof leak

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