old window rot repair question

lilafterNovember 10, 2011

i have 1921 double hung 6 over 6 windows and trim that are in various stages of disrepair from dry rot and termite damage. some are in pretty good shape and just need reglazing and paint.

south facing windows have the most damage.

what are the correct steps to treat and repair damaged windows and trim?

  1. treat with homemade borate/glycol solution

2. wood hardener

3. wood filler- epoxy, putty

do i need to remove as much of the dry rot/soft wood first or will the borate/glycol solution followed with wood hardener stablize it?

read that borate/glycol weakens wood and bonding of wood filler?

live in los angeles, low humidity, stucco exterior.

being november, its not the best time to tackle window repairs, but i had some water dripping inside from one window during the last storm.

from the roof, i can see the problem window has metal flashing over the top of the badly weathered exterior trim.

i plan on keeping and repairing the original windows but not so sure about the exterior trim. would replacing it with similar sized but longer lasting trim (not wood) look horrible?

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graywings123

I have been on my window repair project for a while now. I would suggest Abatron Liquidwood and Wood Epox.

For the exterior trim, some I repaired with Abatron, some I had replaced with Azek trim (back of house), and some with wood (front of house).

Here is a link that might be useful: Abatron

    Bookmark   November 10, 2011 at 8:32PM
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PRO
Christopher Nelson Wallcovering and Painting

Good stuff, I have used it for my exterior wood shutters with very good results( over 5 years now and still holding up)

    Bookmark   November 11, 2011 at 5:52AM
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inox

There are many threads and videos about wooden window repair in John Leeke's forums. You should also consider the elastomeric epoxy repair system from www.advancedrepair.com.

Here is a link that might be useful: John Leeke's Historic Homeworks

    Bookmark   November 11, 2011 at 7:04AM
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graywings123

I have both products - Abatron and Advanced Repair's Flexible Wood Epoxy Repair System. I like them both, but I believe the Abatron is less expensive.

    Bookmark   November 11, 2011 at 2:21PM
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sombreuil_mongrel

I'm working on a set of 6 round-topped double-hung windows right now (at work). They seem to be getting water coming from outside and inside (via condensation) so I'm removing the glass, making new check rails, dipping the weak areas in Abatron, and filling gaps with ART Gel Epoxy before reglazing, painting and reinstalling. The gel epoxy's only flaw is that you cannot really feather it out as you can the Abatron filler. It turned out that the painters 10 years ago had scraped the glass right down to the putty instead of leaving a small margin of paint onto the glass (as one must to ensure that rain is excluded). Hopefully this won't happen again.
Casey

    Bookmark   November 11, 2011 at 4:56PM
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inox

John,

You are welcome.

When I tell people about your forum in person, I tell them it's the place with the eleven-page thread about putty, lest they think the coverage might be superficial. I have gotten some pretty astonished looks in reply.

    Bookmark   November 12, 2011 at 7:14PM
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lucillle

OMG thank you. I have a bunch of repairs and windows to do and had gotten the Compendium book, I wasn't away there was a forum!

    Bookmark   March 11, 2012 at 7:32PM
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kashka_kat

Just wanted to reiterate what others said about getting a GOOD product - Abatron was my choice. As opposed to one that sorta works but not really. I wasted a lot of time and money trying Minwax wood hardener and putty - it is next to useless for anything exterior - hardly made it through one winter. The good stuff is a bit extra cost, but you more than make up for it by saving time & expense not having to deal with it again.

    Bookmark   March 12, 2012 at 12:34PM
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brickeyee

Abatron does not appear to specify the filler used in the paste.

    Bookmark   March 12, 2012 at 2:04PM
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sombreuil_mongrel

Abatron is so very lightweight I always assumed it was glass micro balloons.
Casey

    Bookmark   March 12, 2012 at 6:18PM
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lucillle

I bought some glass micro balloons intending to mix them in paint until I saw some posts that the benefits might be over rated. Are they good filler?

    Bookmark   March 12, 2012 at 6:22PM
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