Prepping For Hardwood: SCREWS + EXISTING NAILS Into SUBFLOOR OVERKILL? - Flooring - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Flooring


Thread Tools Display Modes
Old 08-29-2013, 12:44 AM   #1
Join Date: Oct 2010
Posts: 5
Rewards Points: 10



I've read various threads about using deck screws to eliminate squeaks in the sub-floor and have found them insightful.

I'm renovating a two story house built in 1984 and recently ripped out the carpet on the 2nd floor to install hardwood floors. It's a split level home and the 1st floor is on a concrete slab. My father-in-law was the original builder of the house and noted that they used 2" twisted shank nails along with sub-floor adhesive to secure the 3/4" sub-floor to the joist. Nevertheless, after 29 years the heavily traveled parts of the floor have developed squeaks.

For those area, I'm removing these nails and securing them with Grip Rite #8 2.0" T-20 Torx Deck Srews. But I can't help but wonder if I should just screw the entire sub-floor just to nip any future squeaks. We plan on staying in this house for 25+ years so maybe it's not overkill?

My father-in-law feels that yes, that would be overkill. He thinks that any other squeaks would have developed by now after 29 years and that I should just concentrate on the existing squeaky portions.

My questions to you guys are:

1. Will this be overkill?

2. If I were to proceed, where would I install the new screws? Righ next to the existing nails or between existing nails? Should I space the screws every 12"?

3. Would there be any ill effects from installing deck screws along with existing nails? Will the screws create unwanted floor movement due to difference pressue points of existing nails and the new screws?

Pics of my existing sub-floor and nail are attached. Thanks guys, I appreciate any expertise comments you might have.
Attached Thumbnails
Prepping for Hardwood: SCREWS + EXISTING NAILS into SUBFLOOR OVERKILL?-1.jpg   Prepping for Hardwood: SCREWS + EXISTING NAILS into SUBFLOOR OVERKILL?-2.jpg   Prepping for Hardwood: SCREWS + EXISTING NAILS into SUBFLOOR OVERKILL?-3.jpg   Prepping for Hardwood: SCREWS + EXISTING NAILS into SUBFLOOR OVERKILL?-4.jpg   Prepping for Hardwood: SCREWS + EXISTING NAILS into SUBFLOOR OVERKILL?-5.jpg  


BodegaBay is offline   Reply With Quote
Old 08-29-2013, 06:00 AM   #2
CitadelBlue's Avatar
Join Date: May 2013
Location: Northern VA
Posts: 105
Rewards Points: 97

Using screws is a good idea. I did the same thing a few months ago before getting hardwood installed.




Because you NEVER have enough room .........
See my Trailer and Hitch Thread

Last edited by CitadelBlue; 08-29-2013 at 08:40 AM.
CitadelBlue is offline   Reply With Quote
Old 08-29-2013, 07:02 AM   #3
Join Date: Nov 2011
Location: Hartfield VA
Posts: 34,587
Rewards Points: 14,306

If I had to guess I'd say the real issue is he did not use Tonged and grooved subflooring, and he did not leave any gaps so as the floor flexes the two pieces of wood are rubbing together.
When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions
joecaption is offline   Reply With Quote
Old 08-29-2013, 08:25 AM   #4
Pro Flooring Installer
rusty baker's Avatar
Join Date: Feb 2009
Location: SW Missouri
Posts: 4,875
Rewards Points: 182

The post looked interesting, but the ads cover so much of it, I cannot read it.
The ads in my post are there without my permission. I do not endorse any of the products.
Semi-Retired Installer
Installing since 1973
rusty baker is online now   Reply With Quote
Old 08-29-2013, 08:37 AM   #5
Join Date: Apr 2011
Location: North Carolina, USA
Posts: 4,273
Rewards Points: 4,796

I think it's a little overkill as well. I also note the lack of tongue and groove, and the boards a bit too close together, but that is not necessarily the source of squeaks. You probably won't have any problem using screws through the old adhesive, because I would expect it to have been squashed flat by the nails. I'd walk over the floor thouroughly and address any areas I found. You will have fewer squeaks coming from the subfloor after installing hardwoods than through carpet, because the hardwoods will tend to hide some of them. Of course hardwoods can create new squeaks of their own if not installed properly. Or, a soft spot in the underlying subfloor that doesn't squeak on its own could cause the hardwood on top to squeak later, but I wouldn't lose sleep over it. Once hardwoods are in place you can still address a squeak at that time if you have to.
jeffnc is offline   Reply With Quote
Old 08-29-2013, 12:03 PM   #6
Join Date: Oct 2010
Posts: 5
Rewards Points: 10

Thanks guys for all the input. I'm going to play it safe and put in screws.

Edit: I did confirm with my father-in-law that they used T&G for the subfloor.


Last edited by BodegaBay; 08-29-2013 at 04:53 PM.
BodegaBay is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
underlayment for stick on tiles or vinyl novice40 Flooring 7 09-03-2008 04:49 PM
window installation - nails or screws mt232 Building & Construction 2 04-07-2007 07:41 AM
Drywall - Nails or Screws? digthisbigcrux General DIY Discussions 6 03-20-2007 04:31 PM
Screws vs Nails in Interior framing project alexz Building & Construction 2 07-05-2006 05:58 AM
DECK decking nails vs screws ... christian15213 Building & Construction 8 05-02-2005 07:51 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1