We are building an 8x10 shed in our back yard and when we laid the 3/4" plywood decking down there were some seams between the pieces that you can see through to the concrete below. These are not huge seams but we do have scorpions in AZ so we have to have as many seams filled as possible. Any recommendations on what to use to fill the seams? It will be an exposed floor so I dont want to use anything that will remain tacky or be to raised up.
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Filling cracks in shed floor decking
- Thread starter skon1212
- Start date
I'd probably just grab a tube of Clear RTV or similar product.
cdestuck
Well-known member
At lowes in the paint dept, they have a floor patch powder you mx up with water and fill cracks . I cant recall name for sure but I think its Durhams or close to that. Stuff it tuff as nails after dried
Bondo
Well-known member
We are building an 8x10 shed in our back yard and when we laid the 3/4" plywood decking down there were some seams between the pieces that you can see through to the concrete below. These are not huge seams but we do have scorpions in AZ so we have to have as many seams filled as possible. Any recommendations on what to use to fill the seams? It will be an exposed floor so I dont want to use anything that will remain tacky or be to raised up.
Ayuh,..... ALL of the plywood's edges should be over framin' to screw the plywood down too,.....
Sounds like a poor design, that oughta be Redesigned,....
jdoe213
Well-known member
Epoxy should work.
D45
Well-known member
Instal another layer of thin plywood to cover over all the seams, since the plywood/seams were not installed correctly
With an 8x10, it won't take much at all anyways......how many seams are there???? Did you use full 4x8 sheets???
What is 3/4" plywood decking???? Deck boards or plywood sheathing???
With an 8x10, it won't take much at all anyways......how many seams are there???? Did you use full 4x8 sheets???
What is 3/4" plywood decking???? Deck boards or plywood sheathing???
The seam is the one that runs perpendicular to the joists in the floor. We used 4x8 sheets of plywood so the ones that have seams over the floor joists are fine but where the sheets **** up side by side have a seam that does not run over the joist. Not a huge deal, we just want to seal it up a little bit.
AnEv942
Well-known member
Blocking between joists, at minimum, should have been added where plywood butts.
like2wheel
Well-known member
Blocking between joists, at minimum, should have been added where plywood butts.
Why?
Mine's 18 years old, never had a problem. I've even driven the front end of my Kubota inside to load stuff to the attic .
There's a gap, but I don't have scorpions to worry about.
Use appropriately sized material (string, rope?) as a backer rod & caulk it up.
No need to make a major project out of it.
PWC Repair
Well-known member
Doesn't sound like a structural issue, but wood does expand and contract......use an good outdoor caulk rated for joint movement.
AnEv942
Well-known member
Many reasons to block, spreads loads between joists, keeps joists from rolling, overall stiffer platform, supports the decking where spanning- but in th OPs case simply wouldnt be needing to go back trying to seal out critters.
like2wheel
Well-known member
Many reasons to block, spreads loads between joists, keeps joists from rolling, overall stiffer platform, supports the decking where spanning- but in th OPs case simply wouldnt be needing to go back trying to seal out critters.
Of course. No one said there is no blocking, but it needn't be in a straight line and at 8 feet wouldn't be very effective on a 10-foot length. Also, I find it better offset each one so you can nail directly into it without having to toe nail
Tongue and groove would have been better, but 3/4 is pretty sturdy anyway so no need to make a big deal of this
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