THE DETRIMENTS OF THE CONTEMPORARY STAINED GLASS FROM ESTONIAAuthor Eve Koha 1 ͣ , Author Elise Lekarkin 2 ᵇ

Estonian Academy of Arts

Field of interest: stained glass

Introduction

The contemporary stained glass can also be extremely significant damage. In Estonia 20-30 year-old stained glass may need a comprehensive conservation-restoration.

04-09 June 2017, Lisbon, Portugal

Causes of detearation and detriments

(A, B) The weak structural design

Solutions

(A) A poor materials, tools and a few skills(A, B) Unsufficient of supporting bars

(A) The filling micture loss at the edges between stained glass and window frame

(A, B) Gracked and broken glass

(A, B) Putty is not used to seal the space between the glass and lead

(A, B) Panel bending and sinking

(A)To strengthen the stained glass structure the copper reinforcing tapes were added along horizontal lines

Objects

(A, B) The supporting bars follow in shape and supports the motifs

(A, B) A dust and dirt

(A, B) Corrosion of the lead cames and soldered joints

(A) Muhu St. Catherine church southern window stained glass (1983-1994). Author: Eeva Jänes

(B) Paide Cultural Center cafe stained glass ceiling lightings (1987)Author: Kalev Roomet

(A)

(B)

(A)

(B)

(B) Paide Cultural Center (1987)

(A) Muhu St. Catherine church (1276)

Hard rubbing of the glass surface resultedwith grooves.A granular dirt by strong rubbing generates deep marks on the glass surface. On the sample edges were lime residues were almost completely removed f rom the th i rd sample . The alkaline lime plaster has caused a lot of small holes on the surface of the glass.

The impact of the washing process to the glass using electron microscope

ZEISS EVO Ma15 EDS

Uncleaned glass Glass cleaned with a soft sponge

Glass cleaned with a coarse sponge

(A) All the lead-came flaps were applied the liquid linseed oil putty

(A) All the lead came surfaces were soldered

(A, B) The cracked and broken glass pieces were replaced or clued

(A) For the stabilisa-tion of panels were installed the new fixing intermediate rods

(A, B) Hard to removebrown stains on the violet glass. Manganese + UV radiation

(A, B) Dry and wet cleaning

eve.koha@artun.eeelise.lekarkin@artun.ee