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Mushrooms growing on Anderson Window 400 series

Posted by pegmus (My Page) on
Tue, Jul 20, 10 at 10:42

We having been building a house on the river for three years (we are the contractors as we basically let our "contractor" go after he had the house under roof but unfortunately AFTER he installed the windows.). The Anderson 400 series has been installed for most of this time.
We have a very large tilt window with a circle window at top that faces our back deck and over the weekend, my husband noticed a couple of small "mushrooms" growing out of the bottom right corner of this window. Also, he noticed some "rust" dots going down the facing of the window on that side, too. Of course, now he is worried that there may be leakage going on behind the window frame.

Can anyone tell us if there is any "wood" in these windows so that if there is leaking or water running into the back of the window, there could be "rot" beginning thus the "mushrooms".

Any ideas on what this could be? We have Hardie Plank siding so hving to take the window out would be "horrible"!

Follow-Up Postings:

RE: Mushrooms growing on Anderson Window 400 series

You might want to ask that on the home building forum: They've had a number of discussions about windows and proper installation.

Here is a link that might be useful: Home building forum on Garden Web

RE: Mushrooms growing on Anderson Window 400 series

I would get in touch with the manufacturer immediately (and/or the installing company, whoever is appropriate - is the house new, or only new to you?). A fluke mushroom spore having landed is one thing, but rust is another problem altogether.

RE: Mushrooms growing on Anderson Window 400 series

The rust would be a sign of leakage,ask your contractor to come and have look.I wouldn't worry too much about the mushroom as they just manage to grow everywhere.

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