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Cathedral Renovation

The Basilika of the Mother of Sorrows in Limanova, Poland, is a sandstone building, erected between 1911 and 1918. The building material originates in the Carpathians and was taken from the Maegura-Formation.

The massive damage to the 100-year-old church, which showed itself in the pre-state, can be explained by the special characteristics of the Carpathian Sandstone. It is a type of rock that consists of lime, clay and added mica. It decomposed with time into individual layers. The uppermost layers had partially detached from the facade. Due to weathering processes, the outer shell had taken profound damage. In the past there had been attempts to fill in the gaps with the help of mortar and to glue the damaged areas. This caused further damage.

In shady areas  lichens and mosses proliferated and kept the facade in a permanently  wet condition. The lower sections showed strong saline blooms, as the porous stone sucked up salty moisture from the ground like a sponge. The wooden construction elements of the tower were cracked and partially infested with mold, the load-bearing capacity had suffered. The roofing consisted of mostly damaged bricks and tiles.

Roof

Work carried out:

  • Maintenance of the roof truss and partial replacement of the breams and complete replacement of the battens
  • Laying out with a steam insulating foil

  • Replacement of metal plating on the tower, the bells tower and roof hoods

  • Maintenance of the crosses, gold-plating of the balls, which hold the crosses
  • Elimination of the damage and maintenance of the chapels roof tiles

  • Complete replacement of roof tile type „Monk and Nun“
Contact

Tower:

Work carried out:

  • Repair of the wooden construction of the helmet and replacement of the support arches and the shuttering, impregnation of the wood elements with protection against fungus and insect attack as well as a fire protection
  • Covering of the helmet with a roof membrane

  • Renewal of the actual copper cover coating in compliance with the historical arrangement of the different elements

  • Installation of a net in order to prevent construction of birds nests

  • Repair of lightning conductor

Facade

Work carried out:

  • Removal of moss and lichen infestation

  • Removal and renewing of the joints by filling with cement mortar using mechanical process

  • Removal of loose stone layers

  • Cleaning of stone elements by dry sandblasting

  • Treating of stones with desinfectant

  • Reinforcment of the stone surface by impregnation method using organic silicon-silicone preparation

  • Standardization of stone processing and treatment of damages using mineral cement

Reliefs and bas-reliefs on the facade

Work carried out:

  • Pre-cleaning of the reliefs with soft brushes and brushes

  • Reinforcing the flaking, loose parts of the reliefs with a polyester resin of high quality using the injection process

  • Mechanical removal of old cemeenting

  • Reinforcement of the weakened stone layers by coating with multiple layers of organic silicon

  • Coating stones with desinfectant

  • Reinforcement of the stone surface by impregnation method using organic silicon silicone preparation

  • Repair of damaged stones using lime-sand-putty

  • Colour corrections of treated stone areas

  • Hydrophobization of stones

  • Gold plating of the originally gilded areas

Tower Cross

Work carried out:

  • Restoration of the spire to which the cross is attached

  • Renovation of the ruined gilding of the towerbullet

  • Renovation of the cross itself by cleaning (metal shot peening), hot dip galvanizing, powder painting it, restoration of the damaged parts, including the restoration of two mosaic windows on the basis of one preserved original window