Name: Stella

City: Farmington Hills

Question: I just heard about you from my neighbor. Last spring I had new vinyl siding installed. It’s the 40 ft. seamless length. As soon as the job was finished I started to hear noises coming from the walls, like popping noises and nails being pulled off. I let the installers know, and they said it does this when it expands, but after about 2 weeks it started waving and bulging. They found out that they were delivered bad material. So 2 months ago they replaced it, and I’m still hearing the popping noises,they claim that they never had this problem. So far they did not figure out what it could be. They had installed 3/4 inch insulation on top of the one inch I already had. I was wondering if you could tell me what’s
causing this noise.

Thank you Stella

Stella,

Thank you for being part of the show.

You say you had “seamless” vinyl siding installed over 3/4 inch foam insulation panels and the “popping” noise it makes has you mystified.

Vinyl siding is notorious for expanding in the warm weather and contracting in the cold. This is the reason it should be “hung” on nails through expansion slots – not pinned tight to the substrate. If it is nailed too tight, it will buckle and bow while popping at the joints and in between fasteners. Because the siding is “hung”, it can make noise when winds blow against it - and this is generally harmless.

Each vertical joint should be lapped about an inch – so they won’t create a gap when the product shrinks.

Darker colors will move more because they absorb more of the sun’s heat. You will also get more movement on the sides of the house with the greatest sun exposure.

If the siding was installed over a rigid foam product such as Dowboard or other polystyrenes it will “rub” against the foam as it expands and contracts and can cause quite a bit of noise as the rigid foam acts like a drum head amplifying the sound.

One way to quiet this type noise is to separate the foam face and the back side of the siding with a Tyvec type product – what many call a “house wrap”.

These noises would be periodic depending on time of day and range of temperature swings.

Beyond these issues, if the product was properly installed, you should not be experiencing the problems you describe.

We hope this helps explain what you are hearing.

Please stay in touch and tell others about the show.

God Bless,

The Guys

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