I believe my windows are Simonton or CertainTeed. Approximately 25 years old. Any part numbers are absent/illegible. Bottom sash weighs 20.4 pounds. Require part numbers for replacement roll springs, supports, bumpers, lock shoes, and sash pivot bars if required. Photos show installed/broken, and removed front and back. Appears left and right parts are identical from this single hung window. Due to the springs being in such bad shape upon removal (appears 3 springs per side), can you provide guidance for reinstallation. I didn't see video on website for this particular window/spring replacement. Thank you for your consideration.
Mark
Roll Spring Balance Replacement w/Associated Parts
Home Owner from WI
Oct 13, 2025 5:12 pm
4 user uploaded images
4 Replies
Bob from SWISCO
Oct 19, 2025 4:50 pm
Hi Mark. I am confident we can replace this, but first, can you tell me the width of the coil spring tape? It should be 1/2" or 3/8". We can narrow it all down from there.
Home Owner from WI
Oct 19, 2025 10:19 pm
Bob -
All six roll springs measure 1/2" wide each.
Thank you for your assistance.
Mark
All six roll springs measure 1/2" wide each.
Thank you for your assistance.
Mark
Bob from SWISCO
Oct 20, 2025 3:16 am
Great Mark, thanks. So then you have the 1/2" wide Series 160 springs. For a window sash that weighs 20.4 pounds exactly, use 4 of the S160-05 5.5 pound springs, a pair for each side of the sash. This will give you 11 pounds of support on both sides, for a total of 22 pounds of support overall (being within 1 pound of the sash weight works fine).
For a new pivot shoes, see the 15-111 For new coil covers, see the 15-150D. Finally, for the pivot bar, see if the 26-040 matches up.
Dimensions for 26-040
Let me know if you have further questions.
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