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Andersen series 400 windows leak

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Andersen series 400 windows leak

Old 07-07-2017, 04:56 AM
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Default Andersen series 400 windows leak

While I have you contractors lol...

Double hung, 20 year old Andersen series 400 windows. Vinyl clad outside.

At least half of windows in house have water stains in upper sash where stiles meet lower rail. Also a few with marks in lower sash.

Anyone know more or if this is common? Can it be fixed?

Thanks.
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Old 07-07-2017, 05:14 AM
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What do you mean by stained? These are vinyl clad over wood, if they are leaking the wood will be rotten. I doubt that they are leaking thru the sash's but if they are you can get new sash's for these windows. They are very easy to replace.
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Old 07-07-2017, 05:43 AM
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Originally Posted by Clamdigger II View Post
What do you mean by stained? These are vinyl clad over wood, if they are leaking the wood will be rotten. I doubt that they are leaking thru the sash's but if they are you can get new sash's for these windows. They are very easy to replace.
Water is getting in from the outside and working its way to the bottom of the stile where it's leaving a dark (stained) spot on the inside. I believe, not sure, that the silicone that seals the glass panel to the inside of the sash might be failing. You can access the area by removing (not easily) a cap that exposes channel inside sash frame. Calling Andersen today but with these being 20 years old ....
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Old 07-07-2017, 05:44 AM
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Leaks or condensation?
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Old 07-07-2017, 05:46 AM
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Originally Posted by aubv View Post
Leaks or condensation?
Leaks. Have almost never seen visible condensation. I know condensation is a common issue with these. Thanks.
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Old 07-07-2017, 05:55 AM
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why i like a high quality solid vinyl window....
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Old 07-07-2017, 06:20 AM
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Originally Posted by kone View Post
While I have you contractors lol...

Double hung, 20 year old Andersen series 400 windows. Vinyl clad outside.

At least half of windows in house have water stains in upper sash where stiles meet lower rail. Also a few with marks in lower sash.

Anyone know more or if this is common? Can it be fixed?

Thanks.
Are they all on the same elevation of the house??
Sounds like you may have a head flashing issue or the nailing fin was not installed correctly before the window was put in.

I've installed thousands of Anderson 400's and have never had one call back.
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Old 07-07-2017, 06:44 AM
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Have you checked the caulking around the windows?
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Old 07-07-2017, 06:54 AM
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We have these in our summer place approximately the same age. Similar issues. I have found that over time the weather stripping compresses and can need to be replaced. (This is on my list for '
This summer) Also, I just replaced all the window catches. (Anderson replacements) there did seem to be a design change in the cam mechanism and they compress/ close tighter now.

Got my replacements directly through Andersen online.
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Old 07-07-2017, 08:34 AM
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Originally Posted by Jferg65 View Post
We have these in our summer place approximately the same age. Similar issues. I have found that over time the weather stripping compresses and can need to be replaced. (This is on my list for '
This summer) Also, I just replaced all the window catches. (Anderson replacements) there did seem to be a design change in the cam mechanism and they compress/ close tighter now.

Got my replacements directly through Andersen online.
Which gasket? To have stains where mine are it'd have to be along the top rail of the upper sash. If so, I'd think I'd see stains all along that upper rail, not at the lower corners.
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Old 07-07-2017, 08:47 AM
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Originally Posted by Just1more View Post
Are they all on the same elevation of the house??
Sounds like you may have a head flashing issue or the nailing fin was not installed correctly before the window was put in.

I've installed thousands of Anderson 400's and have never had one call back.
Here's the outside view to match the inside view in the pic above. This is the window showing the worst stain inside and as you can see (and now I see) that If I pull the snap in cover off it's rotting there. I think rain is getting in behind that cover, into where the glass is affixed to the frames.

Maybe this is what Andersen Renewal is for? Lol

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Old 07-07-2017, 08:53 AM
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Are you sure you have 400 series? I don't think they were available 20 years ago.

400 are tilt wash.
I have 25 year old Andersen "narrowline permashield". They are double hung and vinyl clad on exterior and raw wood inside. Mine are stained and poly inside and there is a very slight dis coloration in the corners you describe. Definately no leaks, but they do get condensation in the winter as a small amount of air escapes where the sash meet each other.

I have replaced similar Andersen DH windows, probably 100 in the last couple years. None had failed in any way. Most wanted to go tilt wash or low-e glass, or were replacing siding ect.

Probably not your issue at all but Andersen has a lifetime warranty on glass, and they are very good at honoring it.
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Old 07-07-2017, 09:03 AM
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Just saw the pic. That is bad, the plastic piece at the bottom of the sash should be full width and the side pieces should butt into it.

If you have that in more than 1 window something is very wrong with the seal at the plastic horizontal piece and the glass.
Never seen it happen ever and I have also installed these windows in the thousands.

You can replace the sash but will spend almost as much on 2 sash as a brand new window.
I just paid $175 for 1 sash where the customer broke the glass.

If you posted an inside pic. I can't see it.
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Old 07-07-2017, 09:05 AM
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Originally Posted by muskrattown View Post
Are you sure you have 400 series? I don't think they were available 20 years ago.

400 are tilt wash.
I have 25 year old Andersen "narrowline permashield". They are double hung and vinyl clad on exterior and raw wood inside. Mine are stained and poly inside and there is a very slight dis coloration in the corners you describe. Definately no leaks, but they do get condensation in the winter as a small amount of air escapes where the sash meet each other.

I have replaced similar Andersen DH windows, probably 100 in the last couple years. None had failed in any way. Most wanted to go tilt wash or low-e glass, or were replacing siding ect.

Probably not your issue at all but Andersen has a lifetime warranty on glass, and they are very good at honoring it.
Thanks. They are tilt in. I'm fairly sure they are 400 perma shield. I guess it's not exactly 20 years, I just threw out a round number lol. Glass is fine I think and I've honestly hardly ever seen condensation on the glass of any of them.
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Old 07-07-2017, 09:09 AM
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The problem has nothing to do with flashing, caulking, or as far as I can think the installation job.

I am sure others will agree when they see the pic.

Only two ideas I have are failure as described above or some bird/ bug critter damaging that plastic piece. Get the # on the glass in the bottom corner and Andersen will have pretty exact records of when they were made.

I guess it is possible they had a bad run at some point

OK tilt wash. I have been looking at my Permashield but they look very similar in that corner.
We have also installed many 400's and never seen that problem. Not many are more than 10 years old.

I will ask my salesman if there have been issues. He has been selling them for 40 years.
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Old 07-07-2017, 09:10 AM
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Originally Posted by muskrattown View Post
Just saw the pic. That is bad, the plastic piece at the bottom of the sash should be full width and the side pieces should butt into it.

If you have that in more than 1 window something is very wrong with the seal at the plastic horizontal piece and the glass.
Never seen it happen ever and I have also installed these windows in the thousands.

You can replace the sash but will spend almost as much on 2 sash as a brand new window.
I just paid $175 for 1 sash where the customer broke the glass.

If you posted an inside pic. I can't see it.
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Old 07-07-2017, 09:14 AM
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Originally Posted by muskrattown View Post
The problem has nothing to do with flashing, caulking, or as far as I can think the installation job.

I am sure others will agree when they see the pic.

Only two ideas I have are failure as described above or some bird/ bug critter damaging that plastic piece. Get the # on the glass in the bottom corner and Andersen will have pretty exact records of when they were made.

I guess it is possible they had a bad run at some point.
I bet I have at least 10 sashes with damage, most not as extensive. Most are upper, a few are lower. The "plastic piece" you mention, a cap sort of, has always moved on my windows. It slides up and down an eighth inch or so. Over time they work their way down and I gotta tap them back up with a flat blade screwdriver.
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Old 07-07-2017, 09:15 AM
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Originally Posted by kone View Post

Got it. That stain is wicking from the bottom up in my opinion. Hope Andersen takes care of you that really sucks.
Keep us posted, I may be able to get you to the right rep. if needed.
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Old 07-07-2017, 09:29 AM
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Originally Posted by muskrattown View Post
Got it. That stain is wicking from the bottom up in my opinion. Hope Andersen takes care of you that really sucks.
Keep us posted, I may be able to get you to the right rep. if needed.
Opened case w Andersen. Need to gather glass sizes and logo info for every affected sash. Thanks.
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Old 07-07-2017, 09:40 AM
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Just for comparison, here's a sash where it's not as bad. You can see slight water marks inside. On the outside you can see the gaps in the plastic caps. I don't know if they shrunk or what but they've been that way for many years. I shoulda been more on top of it but life gets in the way...


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