Doesn t even equal a 2x6.
Is my attic 2x4s or 2x6s.
Use 2 syp not spf and you ll be fine.
Turning an attic into a room can add value to your home and additional living space for your family.
There are many things to consider before undertaking the work.
I m thinking of finishing off my attic but my roof rafters are made from 2x4s.
Actually talking to my brother just came up with a new idea add 2 or 3 posts that tie the weak attic floor to the load bearing ceiling above and then just be happy with a bunch of 2x4s for most of the weight bearing knowing that the posts can cut the span in half.
Whenever you are asked if you can do a job tell em certainly i can then get busy and find out how.
What should i plan on doing.
If your joists are 2x6s or 2x8s they are not adequate for supporting attic flooring in a new living area and the furnishings and humans who will use them.
Many older homes were built with steep pitched roofs and plenty of available height that makes attic conversion easy and inexpensive.
When you start a 2 4 project you can figure out all of your measurements in advance.
If you do this you can plan what size 2x4s you want to purchase then see if there s a good combination so you are left with the least amount of scrap.
My primary concern was to ensure the attic had proper insulation and ventilation.
My ultimate plan is to sister the joists to make a sturdier attic ceiling blow in insulation on the roof and put plywood across the joists for a storage platform for my boxes.
Stacking two 2x4s does not equal a 2x8 for strength.
I know this isn t going to be sufficient for baffling and insulation.
My calculations tell me assuming 2 southern yellow pine joists which are common in my area that 2x6s 16 inches on center will span 9 feet 9 inches with allowable deflection being the governing factor.
After i completely gutted the attic i had a blank slate.
I live in atlanta so snow and ice aren t a concern but i do want standard insulation of course.
I temporarily attached a couple of 2x4s to the rafters and made sure they were level to each other and along their lengths.
Next i cut 2x6s and installed them by resting them on the 2x4s and screwing.
Daveola mar 1 at 23 55.
But you can still double the capacity of the existing 2x6s in the attic floor so first let s make sure that s enough for your situation.
Save yourself the trouble just stand 2x6s or 2x8s alongside the existing and screw them together then cover with ply.
The attic joists are only 2x4s and are 27 inch on center i double checked.
I talked to a structural engineer and he advised to sister the existing 2 4 joists.
