Campbell Center Maintenance Workshop, Window Sills
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johnleeke
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Joined: 20 Aug 2004
Posts: 2785
Location: Portland, Maine, USA

PostPosted: Wed Jun 30, 2010 1:50 pm    Post subject: Campbell Center Maintenance Workshop, Window Sills Reply with quote


Topics: stabilizing decay pockets in sill, filling sill weather checks with glazing putty (starts at minute 2:20), sealant on joint from wood sill to stone, wood-epoxy repair

Campbell Center Maintenance Workshop, Follow Up.

In June Bob Yapp and I taught a course on maintenance methods and materials for historic buildings. Over twenty National Parks Service workers attended as well as others involved in caring for historic buildings.

This series of videos is a review of some methods and followups for partially completed demonstrations.

More about the Methods and Materials for Maintenance of Historic Buildings course:
http://www.campbellcenter.org/pages/historic.html#maintenance

More about the Campbell Center for Preservation Studies:
http://www.campbellcenter.org/index.html

More about John Leeke and Historic HomeWorks:
http://www.historichomeworks.com/hhw/index.htm

More about Bob Yapp and Preservation Resources, Inc.:
http://www.bobyapp.com/

_________________
John

by hammer and hand great works do stand
by pen and thought best words are wrought


Last edited by johnleeke on Sat Apr 26, 2014 10:44 am; edited 6 times in total
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johnleeke
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Joined: 20 Aug 2004
Posts: 2785
Location: Portland, Maine, USA

PostPosted: Sat Jul 10, 2010 12:09 pm    Post subject: Reply with quote

One window specialist was confused by the demonstration of using linseed oil putty to fill sill weather checks when wood-epoxy repair methods are often used to fill the checks. Here's that segment of the video:



The point of demonstrating putty to fill checks is that there is no single right or wrong material for filling weather checks.

The video shows a comparison field test of two different materials that can be used to fill weather checks. This is worth testing because putty is now sometimes specified when epoxies cannot be used.

Linseed oil putty has been developed and used over the past several centuries in a wide variety of applications. Here in America it has traditionally been used to fill weather checks on window sills.

This test was part of the Methods and Materials for Maintenance of Historic Buildings course: http://www.campbellcenter.org/pages/historic.html#maintenance
at the Campbell Center for Preservation Studies: http://www.campbellcenter.org/index.html
The test will be examined and analyzed at future courses and workshops. Results will be published at HistoricHomeWorks.com and in the Save America's Windows book.

_________________
John

by hammer and hand great works do stand
by pen and thought best words are wrought


Last edited by johnleeke on Tue Nov 09, 2010 9:47 am; edited 1 time in total
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johnleeke
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Joined: 20 Aug 2004
Posts: 2785
Location: Portland, Maine, USA

PostPosted: Wed Sep 22, 2010 1:39 pm    Post subject: Reply with quote

Documentation on materials used on sill at window #110:

Primer:
Benjamin Moore brand, “Moorwhite” exterior alkyd oil primer.
(this is Bob Yapp's 'standard' primer for window work and was used because he had brought it for teaching his window workshop)

Top coat paint:
Do It Best brand, "Best Look" Exterior High Hide Satin White House and Trim Paint.
(this was the "best quality" 100% latex paint locally available)
Thanks to David Rickey for onsite research to get this info.

Sealant on wood sill, stone sill joint, left third section:
Alex brand sealant

Sealant on wood sill, stone sill joint, middle third section:
Soneborn brand, NP1 polyurethane 1-part high performance sealant

Weather check primer:
boiled linseed oil (specific brand and product unknown, this is what Bob was using for his window workshop training)

Weather check filler, left half section:
Abatron brand, LiquidWood and WoodEpox

Weather check filler, right half section:
Sarco Type-M glazing putty


(this is not a recommendation to use these products in these applications. This is a test for further analysis and study.)

_________________
John

by hammer and hand great works do stand
by pen and thought best words are wrought
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