WPSC

WPSC Window Standard Form

Number:
Update: 7/12/11
Author: James A. Turner
Contributors:
References: Preservation Brief #13: Weatherstripping, Photos by James Turner.

Title of Treatment: Weather Strip
Class of Treatment: [ ] Maintain, [ ] Stabilize, [ ] Repair, [x] Upgrade, [ ] Exception
Type of Treatment: [ ] Traditional, [ ] Modern

Condition to be Treated: Casement (operator) weather strip
Description: Reduce perimeter air infiltration with metal, closed cell foam and ¼” adhesive backed window pile. This area of casement windows is the largest area of air and noise infiltration.

Image from Accurate Metal Weather Strip Catalog, p 31, 2011.




Typical Procedure:
1. Strip existing paint, prime and repaint with direct to metal products.
2. Clean area.
3. Metal weather strip can be cut to size by supplier
4. Closed cell foam and pile can be measured and cut in place.
5. Apply weather strip to operator and close casement.
6. Closed cell foam and pile will need to be replaced often.

Materials:
· Metal weather strip
· Closed cell foam
· Pile weather strip

Quality of Results<described how to recognize>:

Best Work: metal weather bronze, copper brass or stainless steel primed and paint

Adequate Work: adhesive foam and or pile for gaps as large as ¼”

Inadequate Work: Vinyl “v” strips do not fit all application.

Jim, are you using all three kinds of weatherstrip on one window at the same time? Or, are there three ways to weatherstrip, each way with a different kind?

To determine the Type of Treatment we need to know which types of weatherstrip were used during which years. (Before 1940 would make it Traditional, after 1940 would make it Modern) For example, if the metal weatherstrip was in common use before 1940 then it is a Traditional type.

Also, could you attach your images and photo to a message here on the forum? Always attach the highest resolution (biggest) image file you have.

_________________
John
Standards Co-Founder
Standards Editor

http://www.HistoricHomeWorks.com

John,

There will be three different treatments for weather strip from metal to close cell foam. The metal weather strip is a traditional treatment for steel windows. Most manufactures provided matel weather strip and/or storms. One thing that most be noted is that the construction of the steel casement is designed to insure that there is weathering by having continuos double flat contact around the frame wall of the ventilators.