Posted: 5/3/2026 5:07:09 PM EDT
[Last Edit: Thor][Edited]
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While doing some water damage repair, I’ve found I have a section of my house that I am considering turning into an open front porch. With entryway.Yeah, it’s weird and doesn’t make sense but explaining this house/addition/remodel/clusterfuck would take pages. This will actually make more sense then the current situation…this house doesn’t technically have a front door lol Anyway, it’s currently just an 8ft tall 2x4 wall with a 2x4 sill plate and double stacked 2x4 header. Plan is to replace it with 6x6 posts secured to the slab and a proper header beam. What would you guys recommend for securing the post to the slab? This would be my first covered porch project and I’m seeing a lot of options when I look into wind uplift. In case this stuff matters: The slab appears to be a double pour. The upper pour (assuming due to an apparent “seam”) is 6in thick. The roof/ceiling above is standard 16 inch on center ceiling joists with usable attic space. Attached File |
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You might go with 4x6’s and a bracket like this https://www.lowes.com/pd/Simpson-Strong-Tie-Steel-G185-Post-Base-Common-6-in-Actual-3-in/1002542556 |
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Originally Posted By Ndenway1twicetimes: Pretty sure home depot sells various different galvanized brackets for mounting posts to concrete slabs. They do, and I’ve used them in the past for decorative Pergolas and enclosed sheds. Never on anything that could catch wind and lift, so I was just wondering if anyone had experience and what their favorite options were. |
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idk how well the brackets hold up in high straight line, gail force winds or tornados, figure they probably got specs on what structures they're used on & what they can handle. The decks & porchs I've used brackets on haven't blown away, but afaik straight line wind or tornados haven't hit them. Afaik, houses/buildings wall sills are attached to slabs with allthread set in slab then sill is drilled & set over, then washer & nut to secure it to slab. |
| Simpson Strong-tie sells a variety of ties to prevent uplift for homes in hurricane country: https://www.strongtie.com/ |
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Originally Posted By Orion_Shall_Rise: Gonna need to be careful waterproofing the slab connection to your new walls New exterior walls will be 6' back, that's how far back the secondary slab pour extends. The slab itself has a good pitch so I'm not too worried. There's a possibility this part of that addition used to be outside anyway. Seeing a lot of evidence that this may have started as a semi enclosed carport with storage closets. I'll be using a sill plate seal for the wall, plus I'll be using a waterproof membrane on the entire porch floor. I planned on running that up the framing a bit similar to doing a shower pan if I do tile. If I do a faux deck (so I can seamlessly extend it out another 15 feet over a ravine) I may just do a section of material where the wall and slab meet and Hydro Ban the rest of the slab. Either way if rain is beating against the wall, nothing can get through the bottom. |