Weather stripping not fitting in Certainteed Window

A home owner from USA says:
August 30, 2021

Hello,

I have a Certainteed window that needs its bottom weatherstripping replaced. I placed an orderfor your 5' Dual-durometer Weatherstrip (58-164-5) because the dimensions matched. The product seemed like a good fit (see attached photo) but unfortunately I think the T is too rigid. The original weatherstripping is rubbery and can easily be pressed into the groove.

I took the window off and tried to slide the weatherstripping in, but I couldn't get more than a few inches due to the friction. When I took the weatherstripping back out, the T had deformed into a Y. I tried getting half of the T in, and pressing the other half in with a putty knife, but that didn't work either. I think the T is just too wide for the groove.

Do you have any other ideas? I'm having trouble finding a T slot weatherstripping replacement for this window. The original weatherstripping is failing (the edges have fallen off) and water is getting inside.

Thumbnail of the uploaded file named IMG_2286.jpg
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Paul from SWISCO responded:
September 7, 2021

Other Certainteed customers have had success in using our 58-183 bubble weather stripping to replace the original, however I've admittedly never tried it myself. I recommend ordering a sample of it from this page to confirm before you commit to a purchase.
A home owner from USA says:
September 16, 2021
The 58-183 sample was able to slide in the groove without any issues. Thanks!
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Paul from SWISCO responded:
September 17, 2021

Great news! Thanks for confirming. If you ever needed anything else, feel free to ask.
A home owner from CT says:
May 28, 2022
This product worked perfectly in my certainteed windows. Thank you very much. I didn't think I would ever find anything to match the old seal.
A quick learner from Illinois says:
July 27, 2022
I just rec'd 58-183 for my 19 Certainteed windows. The product seems like a perfect replacement. However, we are having an extremely dufficult time getting it to slide in place. It will slide for about a foot & then stop. We tried lubricating track w/dish soap to help but no luck. The window track is in perfect shape. Do you have any suggestions?
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Tom from SWISCO responded:
August 1, 2022

I'm honestly not sure why that might be happening. The only explanation I can think of is that there is some obstruction in the track that would prevent it from going in all the way. This is the case in every instance I can think of where the seal suddenly stops while sliding in.
39" Dual-durometer Weatherstrip
39" Dual-durometer Weatherstrip
58-164
$6.16
.187 T-Slot Offset Hollow Foam Seal,12ft
.187 T-Slot Offset Hollow Foam Seal,12ft
58-183
$16.70
Identifying Replacement Weatherstripping
Identifying Replacement Weatherstripping
VIDEO
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