You are here:

Stained Glass/Re: leadlight windows


We live in Australia in a Tudor house with most of the windows being diamond shaped clear leadlight windows. The house is over 30 years old & we bought it 8 years ago. The windows leak when it rains with the water coming in where the lead meets the glass. When the windows are dry they always have white chalky residue on them & it has the look like it is running down each diamond. My question is; Is there a way to fix this leaking? Can I re cement or re putty the windows & if so can this be done with them in situ? As we can't remove most of these windows without great expense. The windows that are the worst affected are the ones that face the full afternoon sun which at this time of year can be temperatures up into the high 30's & low 40's.  I would really appreciate any suggestions you may have in regards to how we repair our windows. Thank you. Regards, Heather Morriss

Dear Heather,

It is not recommended to waterproof a leaded panel in situ. However, it sounds as though you have a real mess on your hands. If you would e-mail me at, I will look into a few options and hopefully be able to provide you some 'doable' ideas that will help.



Stained Glass

All Answers

Answers by Expert:

Ask Experts


Valerie McCartney


Visit our web site at I can answer questions about restoration and repair of stained glass windows and their surrounds. I can, also, answer technical questions regarding matching old glass, glass painting (kiln-fired), waterproofing panels (cementing), re-inforcing, removal, and installation. I can not answer questions on glass casting, Dalle de Verre, or glass blowing.


Past/Present partial client list
Aboite Baptist Church, Ft. Wayne, IN; Immaculate Conception Church, Three Rivers, MI; St. Monica Church, Kalamazoo, MI; St. Charles Catholic Church, Coldwater, MI; St. Clair Catholic Church, Centreville, MI; St. Mary's Church, West Phalia, MI; Pleasant View Church of Christ, Angola, IN; St. Paul United Church of Christ, LaPorte, IN; First Congregational United Church of Christ, Olivet College, Olivet, MI; First Congregational Church United Church of Christ, Kalamazoo, MI; Trinity Lutheran Church, Culver, IN; St. Paul's Lutheran Church, Breman, IN; Grace Lutheran Church, Germfaske, MI; St. Michael's Lutheran Church, Rogers City, MI; United Methodist Church, Bellevue, MI; Augusta Fellowship United Methodist Church, Augusta, MI; United Methodist Church, Galena, IL; Metropolitan United Methodist Church, Detroit, MI; University United Methodist Church, Lansing, MI; Believer's Bible Fellowship Church, Churubusco, IN; St. Elias Eastern Orthodox Church, Battle Creek, MI; First Presbyterian Church, Allegan, MI; First Reformed Church, Grand Haven, MI; Bellmor House, Grosse Pointe, MI; Milwood Middle School, Kalamazoo, MI;

Experience in the area
I have owned and operated Full Spectrum Stained Glass, Inc. since 1988. (

The Stained Glass Association of America, The American Glass Guild, National Trust for Historic Preservation, Better Business Bureau of Western Michigan

©2016 All rights reserved.