Seeking Tips On Building Parallelogram Boxes To Support New Subfloor.... - Carpentry - Page 2 - DIY Chatroom Home Improvement Forum

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


Like Tree6Likes
Thread Tools Display Modes
Old 04-07-2017, 08:53 PM   #16
journeyman carpenter
woodworkbykirk's Avatar
Join Date: Sep 2011
Location: nova scotia canada
Posts: 3,316
Rewards Points: 1,250

Re: Seeking tips on building parallelogram boxes to support new subfloor....

the reasoning for not fastening deeper than 1" into a joist when putting down subfloor is done so as a precautionary step so to not drive a screw through any pipes or wires that are closer to the top of a joist
Windows on Wash likes this.


woodworkbykirk is online now   Reply With Quote
Old 04-20-2017, 10:15 PM   #17
Join Date: Mar 2017
Posts: 170
Rewards Points: 80

Re: Seeking tips on building parallelogram boxes to support new subfloor....

It's been a while and I'm finally getting around to installing my floors for good.

I'm thinking I lay the first layer down as pictured below lengthwise. The second layer of advantech will be laid down perpendicular to the first layer. That way the seams are not in the same spots.

Does that make sense?

Sent from my iPhone using Tapatalk
jaketrades is offline   Reply With Quote
Old 04-22-2017, 10:56 AM   #18
Join Date: Mar 2017
Posts: 80
Rewards Points: 162

Re: Seeking tips on building parallelogram boxes to support new subfloor....

Originally Posted by jaketrades View Post
When sistering 2x4s onto joists what's the appropriate screw depth into the joists. 1/2" or 1"? The studs are 1.5" so trying to decide between 2.5" vs 2" screws.
Sistering joists together we usually shoot 3" nails with a nail gun. Screws I'd go the same, 3" if you're not going to overdrive them. 2 1/2 should be fine too. Just make sure you're not using some kind of drywall screw that can snap easily. Nails can bend, so they don't just snap the first time there's some force put on them.

When you're putting down your subfloor there's a general rule of thumb, and like all general rules there are a lot of cases it doesn't apply, but usually the length of the screw should be 3 times the thickness of what you're screwing down. So 3/4 ply gets a 2 1/4 screw, 1/2 gets 1 1/2 screw. As has been mentioned before, you have to adjust if there's any kind of pipes or wires running through there so you don't have a flood/shock while screwing your subfloor down.
For subfloor you should use some construction adhesive as well to eliminate squeaks.


NotyeruncleBob 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
Building a large Fish Tank - How? darenrogers General DIY Discussions 3 01-20-2010 06:50 PM
Building a header to support roof in NY jimmyfloyd Building & Construction 1 09-18-2009 05:58 PM
building up a subfloor angelo91 Flooring 8 07-22-2009 10:13 PM
Building Planter Boxes kimberland30 Landscaping & Lawn Care 1 05-15-2009 10:19 PM
Seeking Advice On Building Contract RichardE General DIY Discussions 5 04-25-2007 01:19 AM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1