seal on vinyl windows--what is it made of, does borax damage it?

lindalouokNovember 14, 2010

What is the black seal on the inside of a vinyl replacement window made of--the seal taht is between the window glass and the vinyl? Does borax degrade it or make it expand? Am I ruining my windows?

I have been trying to get rid of mold that grows around my vinyl replacement windows. Mostly the mold grows at the bottom in the winter, when there is moisture collecting on the window. I have tried borax to get rid of the mold and let it sit for one day (1/2 c borax, 1/2 c vinegar, 1-3 c water). Now it looks like the rubber (or whatever the black seal is made) of is expanding or cracking. I can't see it well enough to tell exactly what is happening.

Thank you for reporting this comment. Undo
alan_s_thefirst

If it's cracking, I guess it does.

I would guess it's nitrile rubber (what o-rings are made of) or butyl rubber, or some sort of non-hardening elastomer polysulfide.

    Bookmark   November 16, 2010 at 12:21AM
Sign Up to comment
More Discussions
Pros please help differentiate between two window manufacturers...
Hello, we are the midst of a new construction build...
rebph
Best Window for Seasonal Cabin
I am building a small cabin in northeast Wisconsin...
mjlambert08
Lockheed, Certainteed Bryn Mawr III, or Alliance
Wondering which is the better new construction vinyl...
16cassie
Sunrise, Marvin, and window shopping woes
Hello, I am looking for some advice. Briefly, we live...
Summer
Remove window film immediately?
My contractor has been installing my new Anderson Woodwright...
keys
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™