How to make a DIY window insert for noise reduction

Do you get a lot of noise through your windows? Want an affordable solution? I used plexiglass inserts on some windows that face street-traffic and construction noise.

This is a good option if you have multiple noise issues, a limited budget, if you're a renter and can't do remodeling, or you can't find the right contractor. This is something you can do yourself! It's also a good alternative to buying custom-made (more-expensive) inserts from an online window-insert company, especially if you're not sure if they'll solve all your noise issues.

In this video, I'll show you some of the challenges, how and where I bought the plexiglass, and how much noise was reduced (typically, a 10-15 dB noise reduction). The results (and process) weren't perfect, but they definitely made an improvement on some types of noise.

"Just get to the point" - key moments:
2:49 - Introducing TAP Plastics (skip the intro)
3:46 - Cost for first window insert
5:03 - Informal noise comparisons
6:21 - Decisions for second window (larger window)
6:55 - Second window
7:39 - Informal results

Resources:
TAP Plastics (for plexiglass): https://www.tapplastics.com/
Joiners for connecting large panels (TAP Plastics): https://www.tapplastics.com/product/p...
Wall brackets: https://www.amazon.com/dp/B07SX6SM12
Foam on back edges of plexiglass (aka "noiseproofing joist tape"): https://acousticalsolutions.com/produ...
Foam strips on bottom of plexiglass: https://www.amazon.com/gp/product/B08...
Ribbed rubber weatherstrip lining the inside the joiners: https://www.homedepot.com/p/M-D-Build...

"Helpful Mike's" DIY video:    • DIY window soundproofing - Indow alternati...  
Update: how I improved this window 2 years later:    • Improving my DIY soundproof window: what I...