The Case of Reducing Outside Noise


I have noise through my bedroom windows from condo air conditioners outside. I am considering another layer of glass to the windows and am considering laminated glass vs. solid glass. Please tell me which is better for sound reduction or if this is even a good idea? Merry Christmas and Happy New Years!

Thanks for your help.



Thank you so much for reaching out to the Glass Detective and for your kind remarks as well. Now for your question as to whether or not laminated glass may be of help in reducing the amount of noise you are getting from condo air conditioners outside your home, the quick answer is YES. The Outdoor-Indoor Transmission Class (OITC) Ratings are significantly improved in most situations by the use of laminated glass in lieu of non-laminated glass products of similar thicknesses.

HOWEVER, there are a few questions that need to be answered regarding what might be your best approach to all of this and at that point, a reliable and knowledgeable glazing contractor is your best resource. They can examine your existing framing to see if a reglazing (glass replacement or retrofit) is the best approach and can provide you with pricing alternatives as well. I have personally been involved with buildings near or at airports as well as next to downtown elevated train systems where laminated glass was successfully used to greatly reduce sound levels. I wish you well with your project and if you get a chance, let me know what you did and how it worked out.


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