Floor joists and
subfloor

houseplangallery.com

Now, you
are ready to start building the subfloor structure on top of the
foundation with flooring materials. You will start by putting the sill
plate down on top of all the anchor bolts. Drill holes where all the
anchor bolts are and screw the sill plate down evenly. It will go all
the way around the top of the foundation.




After that, you will put up the rim joist, which is usually a 2X10 on
its side, all the way around the outside of the foundation. See pic

Sill plate




Next, you’ll put the floor joists in and nail them through the outside
of the rim joist for extra strength.

They should be on either 16″ or 24″ centers depending on
what the inspector says. I’d prefer 16″ centers for extra strength.See
pic.


Floorjoist





While the floors are open like this, you can take advantage and run
some of your plumbing lines.

houseplangallery.com

Once the floor is on it will be more difficult to get
long ABS pipes or copper pipes into the crawl space. You can even run
some of your Electrical and Network cables while it’s open.


Install subfloor





Once the joists are in place, you can cover them with the floor
material. It’s called subfloor because there will be a top floor that
gets put in with the finish work.

A good material is 5/8-inch plywood or waferboard. This
is where you see if your foundation is in square or not. If it’s not in
square you’ll be cussing a lot throughout the whole building process.
The sheets won’t fit together very well and there will be a lot of gaps.

That’s just one of the many reasons why it’s so
important to get the foundation perfectly square before you pour it.


Subfloor
top of page

houseplangallery.com



Over 4 million visitors to this site since it was born!

home construction



My monthly newsletter keeps you up to date on home construction and design ideas.

Enter your E-mail Address
Enter your First Name (optional)
Then

Dont worry — your e-mail address is totally secure.
I promise to use it only to send you Housebuilding tips.







I just wanted to say that I love your website. My husband and I followed your instructions on building our own home. Most of the work we did ourselves, but not all. We saved $90,000 in labor costs and now have a beautiful home that we own.

--Sue and Les Carrigan, Draper, Utah






I built my own home doing all my own labor. My house costs me around $70,000 for materials. It took me 8 months to build and is about 2,000 square feet. I didn't think I could do it, but your house web site encouraged me. I used all the info you had.

Thank you,

Benny Luis Lopez,

Gainsville, Florida






I can't thank you enough for your free information web site about home building. I was looking for Electrical wiring diagrams when I found your site. It was very helpful.

Steve Lundquist,

Little Rock, Arkansas





My wife and I lost our home to foreclosure but we kept a plot of land to start over. We are halfway through the construction of our house. Your website gave us hope to start over and build a house with low payments. We are in our late 60's but we find it rewarding to put so much effort into a project that will reward us for years to come.

Name respectfully withheld