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Eliminating Subfloor Squeaks For Good

 
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Old 04-23-2019, 01:22 PM   #1
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Eliminating Subfloor Squeaks For Good


We have a 26 year old Burnstead house in the Pacific Northwest. The floors were a bit squeaky when we bought the house 5 years ago. The squeaking has increased quite bit in the years since we bought the house. Pretty much the entire second floor has squeaks. We are hoping to fix the squeaky subfloors when we pull out the the old carpet, before putting in a new carpet.

The solution advised on the Internet seems to be putting in screws about 12 inches apart to properly fasten the subfloor boards to the joists. Does that sound like the right and complete solution?

- Should the screws be closer together than being 12 inch apart?
- Should we be using any other material in addition to the screws, for example, injecting liquid nails / glue? I am not sure if glue was used when the subfloors were originally installed.
- Subfloor appear to be 1/2 or 3/4 inches thick plywood. Should I consider adding another layer of subfloor to make sturdier while screwing it down?
- Will the squeaks go away after using screws or will they eventually come back - how soon?
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Old 04-23-2019, 08:19 PM   #2
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Re: Eliminating Subfloor Squeaks For Good


2" grk screws if you want to do it by hand, or you could pick up a Simpson quick drive screw gun with collated screws if you want to save your back.

I go every 8" or so. In persistent spots, screw until the squeak goes away

I wouldn't bother attempting to inject glue. If it's 3/4, that's fine, I've never seen carpet laid over just 1/2"

-Rich

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Old 05-05-2019, 03:55 PM   #3
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Re: Eliminating Subfloor Squeaks For Good


i have good results with this method
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Old 05-05-2019, 04:50 PM   #4
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Re: Eliminating Subfloor Squeaks For Good


I have a client that had really squeaky floors and we installed 1/4 backer board in thin set and its been squeak free for years!!!!
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Old 05-07-2019, 12:27 AM   #5
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Re: Eliminating Subfloor Squeaks For Good


put screws, and the more the better.
and avoid screws where the very top has a smooth shank. could squeak more. i'd probably use an exterior galvanized srcew as they have a rougher finish.
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Old 05-07-2019, 05:42 AM   #6
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Re: Eliminating Subfloor Squeaks For Good


I’d use these, you might get away with #8 but the #10’s have some serious holding power:


https://www.menards.com/main/hardwar...4423023661.htm
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Old 05-07-2019, 05:55 AM   #7
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Re: Eliminating Subfloor Squeaks For Good


Remove the second floor and re-frame the floor sub-structure, glue down new 3/4" plywood and you only need to put screws every 6" O.C along the edges and 12" O.C over intermediate supports.
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Old 05-07-2019, 06:43 AM   #8
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Re: Eliminating Subfloor Squeaks For Good


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