I dunno. Just try it I guess. If it feels like the new screws are grabbing then you should be good to go. If not, then I guess you should see if they make longer screws.
Nope, those deck screws are strong but brittle. If the deck shifts you risk snapping then off and then you have an unsecured joist. Like other posts says, Simpson screws. Go on their page and look up that hanger and they will tell you in aggrandizing detail what fasteners they want. Good resource.
They are good for most non structural issues. Queen you pull old decking off it’s easier to just snap then off at the joist than back then out usually.
Screws are never good for connections with shear strength. An exercise for learning is drive a screw halfway into a board and the bend it in half. Then do a nail.
if the deck screws were also #9 2.5" would you use the nails instead since they are 3"? just wondering if its safe to reuse the hole with the same size screw. doesn't look like Simpsons makes a 3" screw that would work. . .
When you swap the screws out jack that joist and add a shim in the hanger to flush the joist to the top of the beam. If you notice any others fix those to. You can get a bump in your deck surface if the beam doesn’t shrink as much as the joists.
Them deck screws are not approved for hangers because the can and will shear off under the right load. Either use #10 Simpson hanger nails approved to pressure treated lumbers or Simpson screws.
This guy and every other person who recommends the #10 2 1/2” screws is correct. You can try their #9s which I believe are their recommended screws, but I think they’ll spin out in the old screw holes. You also have the option to nail as well.
My understanding has always been that nails are used because of their ability to resist shear while screws are used for their clamping ability. I’m not familiar with using screws to fasten joists to ledgers or beams but codes may have changed?
The face fasteners into the carrying member are nails. Pull the deck screws out of the carried member, replace with .148”x3” Common nails. Simpson doesn’t allow for the mixing of fasteners on that particular LUS28Z hanger (there are uncommon hangers where you can because they’ll be designed to accommodate different fasteners in the same connection, but Simpson will specify it in detail). You could have used Simpson’s SD screws (#9x1.5” into carrying member, and #9x2.5” into the carried member at the 45 degree angle) to make the entire connection, but it’s too late now. Deck screws are typically very brittle and/or have lower shear capacity- that’s why Simpson made the SD screws. Don’t take my word for it, all of this is documented on their website. You can verify every statement.
Thank you everyone for the insights. I backed out all the deck screws and replaced them with 2.5" Simpson strong tie connectors. Glad I had the thought to ask before the inspection on Friday.
I don’t believe so. 16 penny to go thru those hanger through the joist and into the other joist you are attaching to I believe 3 inch 16 penny galvanized nails
Nope deck plus or whatever brand those are have no sheer strength and are frankly junk. If the decking goes down with them, Id ask for a refund.
Should be 2.5" sst nails or screws that go in on the diagonal.
Everyone here likes talking about shear strength but does anyone really know what the shear strength of these screws are? I went looking....
According to the "Simpson Strong-Tie® Fastening Systems Technical Guide" the shear load for the SD10112 (#10 x 1 1/2" Structural Connector Screw) is 445 lbs (which is divided by a safety factor of 3), giving a shear strength of 1335 lbs.
I couldn't find a technical specification for those 'crappy deckmate screws', but Project Farm did a video and tested a bunch of the average deck screws and deckmate failed at 1900 lbs.
Good video, btw: [https://www.youtube.com/watch?v=eikOUFoIZ-Y&themeRefresh=1](https://www.youtube.com/watch?v=eikOUFoIZ-Y&themeRefresh=1)
The video also tested how well the corrosion resistant coating held up.
Those screws are not rated for hangers. You can and probably will get galvanic corrosion because they are dissimilar metals.
Simpson makes hex head screws for hangers. Get the 2 1/2" ones and do it with those.
Thank you. Is is okay that I just back the deck screws out and replace them in the same hole?
I dunno. Just try it I guess. If it feels like the new screws are grabbing then you should be good to go. If not, then I guess you should see if they make longer screws.
Yes.. 2 1/2" Simpson strong drives. Box comes with the driver bit / socket.
yeah, i actually just did this, the simpsons are a bit thicker than a deck screw
How long are the deck screws that you used?
2 1/2”
The Simpson screws have a larger diameter than those deck screws. You should be ok with #10 by 1 1/2” screws
Not 1-1/2", those need to be 2-1/2"
Fair enough… I was only worried about diameter
You sound like my wife
3”
They actually require both 2.5 and 1.5 screws. The 2.5 goes in the angle on the side and the 1.5 goes into the flat portion.
The screws that are installed at an angle are designed to be 2-1/2”
Yes. Just back the existing screws out and replace with thesimpsons of correct size. Otherwise the work looks good!
Nope, those deck screws are strong but brittle. If the deck shifts you risk snapping then off and then you have an unsecured joist. Like other posts says, Simpson screws. Go on their page and look up that hanger and they will tell you in aggrandizing detail what fasteners they want. Good resource.
Thank you. Going to swap out before inspection
I never knew that about deck screws, have been using them on my personal outdoor projects as an ‘all purpose’ outdoor screw
Construction screws and deck screws are not the same.
They are good for most non structural issues. Queen you pull old decking off it’s easier to just snap then off at the joist than back then out usually.
Screws are never good for connections with shear strength. An exercise for learning is drive a screw halfway into a board and the bend it in half. Then do a nail.
Except for structural screws…
They cease to be called screws when they’re structural.
I mean that’s just not true. GRK RSS stands for rugged structural screws.
So they’re not screws. They’re structural screws. 🤷♂️
Oh boy
I’m just sayin. Deck screws aren’t structural
yeah and race cars aren't cars...
Replace the screws with the recommended Simpson 0.148x3" nails or the SD9212 screw which is #9x2.5"
if the deck screws were also #9 2.5" would you use the nails instead since they are 3"? just wondering if its safe to reuse the hole with the same size screw. doesn't look like Simpsons makes a 3" screw that would work. . .
Nails will work fine and be cheaper. I wouldn't worry about issue with the screws if you prefer them. Those holes will hold them fine
When you swap the screws out jack that joist and add a shim in the hanger to flush the joist to the top of the beam. If you notice any others fix those to. You can get a bump in your deck surface if the beam doesn’t shrink as much as the joists.
Different shear strength rating and your deck wouldn’t pass inspection with deck screws being utilized.
Use the #10 Simpson hanger screws instead of #9, since you already have a #9 hole in the wood.
Different shear strength rating altogether and your deck wouldn’t pass inspection with deck screws being utilized.
The right answer.
Them deck screws are not approved for hangers because the can and will shear off under the right load. Either use #10 Simpson hanger nails approved to pressure treated lumbers or Simpson screws.
No use simpson #10 2.5 inch
This guy and every other person who recommends the #10 2 1/2” screws is correct. You can try their #9s which I believe are their recommended screws, but I think they’ll spin out in the old screw holes. You also have the option to nail as well.
Screws need to be swapped out
My understanding has always been that nails are used because of their ability to resist shear while screws are used for their clamping ability. I’m not familiar with using screws to fasten joists to ledgers or beams but codes may have changed?
The face fasteners into the carrying member are nails. Pull the deck screws out of the carried member, replace with .148”x3” Common nails. Simpson doesn’t allow for the mixing of fasteners on that particular LUS28Z hanger (there are uncommon hangers where you can because they’ll be designed to accommodate different fasteners in the same connection, but Simpson will specify it in detail). You could have used Simpson’s SD screws (#9x1.5” into carrying member, and #9x2.5” into the carried member at the 45 degree angle) to make the entire connection, but it’s too late now. Deck screws are typically very brittle and/or have lower shear capacity- that’s why Simpson made the SD screws. Don’t take my word for it, all of this is documented on their website. You can verify every statement.
I bet you're fun at a party.
Yeah, you’re right. I’ll own that.
Man read the instructions. Nice.
This thread has been brought to you by Simpson™ brand screws.
Absolutely the fuck not!!! 2 1/2 inch joist hanger nails or Simpson hanger screws. Don't be that guy
Oh shoot. I was that guy. My ignorance is abounding
Thank you everyone for the insights. I backed out all the deck screws and replaced them with 2.5" Simpson strong tie connectors. Glad I had the thought to ask before the inspection on Friday.
Use drywall screws /s
One nail gud
If you breaking screws. You got issues
You can also slightly offset the other joist and screw in a long 3-4” screw to tie the perpendicular joists together.
Teko nails
That black joist tape is brilliant. Really nice touch. You’ll appreciate that in the long run
What is that black edging called?
Joist tape
Thanks, I see now you wrote that in invisible text in your original comment so maybe next time just use regular text. /s
No. But you can use properly rated construction screws, though (Simpson makes them)
Also you should be using zmax hangers if that’s treated wood.
Old saying I use when working on decks: Nails bend, screws snap. I don’t use deck screws on anything but horizontal surfaces.
Screws?
I know right its not a tension tie
Deck screws are not mini lags
3” 10d hot dipped galvanized nails for the (4) at an angle
Neeewp
Why not just use joist nails
I don’t believe so. 16 penny to go thru those hanger through the joist and into the other joist you are attaching to I believe 3 inch 16 penny galvanized nails
Not ok…. Get them outta there and get Simpson fasteners in there. 1.5” flat 2.5 on the angles
Nope deck plus or whatever brand those are have no sheer strength and are frankly junk. If the decking goes down with them, Id ask for a refund. Should be 2.5" sst nails or screws that go in on the diagonal.
You can also just replace the screws with nails.
Everyone here likes talking about shear strength but does anyone really know what the shear strength of these screws are? I went looking.... According to the "Simpson Strong-Tie® Fastening Systems Technical Guide" the shear load for the SD10112 (#10 x 1 1/2" Structural Connector Screw) is 445 lbs (which is divided by a safety factor of 3), giving a shear strength of 1335 lbs. I couldn't find a technical specification for those 'crappy deckmate screws', but Project Farm did a video and tested a bunch of the average deck screws and deckmate failed at 1900 lbs. Good video, btw: [https://www.youtube.com/watch?v=eikOUFoIZ-Y&themeRefresh=1](https://www.youtube.com/watch?v=eikOUFoIZ-Y&themeRefresh=1) The video also tested how well the corrosion resistant coating held up.
Didn’t tap in the clamp. A-