how to attach a deck to a concrete slab

Simple math and accurate cuts yield a perfect set of deck stairs. I’d like to put a pergola on this slab. This includes removing sand, dead leaves, and gravel. You drill into the concrete and insert concrete screws or anchors. How to Pour a Concrete Slab: The Basics. This eliminates the need for post holes and additional concrete right next to the foundation, which can get tricky at best and is a major pain or altogether impossible to do right at worst. Don’t worry about cranking it down too tightly, though. After you unscrew the nut a little, hammer in the anchor a bit more. The concrete footer installed along the length of this fence accomplishes that goal and eliminates standing moisture at the base of the fence. On this project, the 2×10 joists of the main deck frame sit just about even with the top of the foundation, and a landing framed with 2x8s sits atop the main frame, serving as a transition point between the lowered deck and the patio door. How do I attach joists to the concrete? Start your subscription today and save up to 52%. And a miter saw for making your lumber cuts. Can you put composit decking over a concrete slab… A rotary hammer drill produces a pounding force while drilling that makes it an excellent tool for effectively drilling into (or through) concrete. Many people are choosing wooden railings over iron because wood does not rust and it's easy to remove or replace. Wood is by far warmer a… I was thinking of using that and attaching L brackets to the slab … I think I remember seeing a product that you pour into concrete after drilling a hole in it, when it dries you can drive regular hardware into it. I have enough info and help for this job, except can someone please advise the best way to support / lift the decking frame above the concrete slabs to prevent the frame from rotting due to water entrapment. Your email address will not be published. Sweeping dirt’s debris over the existing concrete slab will allow bonding to take place. The first, and probably most important, tool that you’ll need access to in order to mount the deck frame to the concrete foundation is a rotary hammer drill. See the image below. Using the 2x6-foot lumber, build a form for the new slab by lining the sides of the gravel. Fastening a Ledger to Concrete: The ledger is not only the structural connection between the deck and the house; it’s also what establishes the overall height and levelness of the entire deck frame. What would be the best way to attach the posts to the slab? Hammer the wedge anchor into the frame board and concrete still holding the … How to Smooth Textured Venetian Plaster Walls, Glass Bottle Cutter: Basic Tutorial and Product Reviews, How to Install Modern Pergola Rafters Without Brackets, Cool And Useful Woodworking Aprons For Those Who Crafts, New Bathroom Designs With Style and Technology in Mind, 12 Must-Have Gutter Cleaning Tools For An Easy Maintenance, 50 Ways to Leave Your Old Home Decor Ideas Behind, The Best Weber Grills Will Make Summer Cooking Great – Guide and Reviews 2021, Patio Conversation Sets Can Make Your Outdoor Space More User-Friendly, How to Mount a Deck Frame to Concrete Foundation, Converted Prado Apartment Becomes Liveable Family Home in Marseille, Small Couch Designs Reveal Their Playful And Theatrical Natures. Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers. ft.), but expect a weekend or two of hard labor. Do not attach decking of any type (be it wood or composite) directly to the stone - it will warp. Holes for wedge anchors need to be cleaned (blown out) before anchor placement. Once the base is in place, the bottom of the post slips right in. © 2021 The Taunton Press, Inc. All rights reserved. On this project, the 2×10 joists of the main deck frame sit just about even with the top of the foundation, and a landing … These will be the end "sill plates" that support the ends of the floor joists. Would the entire deck be able to move with the slab during freeze hoist? I want to build an 12x16 deck on top of an8x10 slab. Even at grade level, this beam has an important job. Install your sleve anchors. There are more uses to concrete than many homeowners realize. The boards are secure, with their double wedge anchors into the concrete, to provide plenty of support for the deck frame. Bridge from the concrete slab to the first pier block with a pressure-treated joist board of standard width—the joist extension board. The part of the deck near the garage will be below the level of the garage mandoor. Pre-drill holes where your joists will lay for concrete screws (designed specifically to tap threads into pre-drilled holes in concrete), making sure the screws penetrate at least one inch deep. Attached Patio Covers can be attached to a concrete slab and the posts can be attached by .....>> How to Deck Over a Concrete Stoop | Video | This Old House . This example uses 1/2″ wedge anchors, 4-1/4” long. My proposed deck would be 350 x 370 with height from the slab between 17 - 18 cm so it stays flush with the brick and same level as my internal floor. Technically, cement board can be laid over a concrete slab as the base for a tile installation. Avoid DIY mistakes when building a deck over concrete. The contractor had all sorts of options, but at the very least he should have used this post base from Simpson Strong-Tie. Because it is more accurate to place the 2×6 and drill through that into the concrete (better to align them precisely when they’re drilled together), we measured and marked with colorful tape on the drill bit 4-1/2”, which gives us a little extra space just in case. You’ll notice that the ends of these frame boards touch but are not end-to-end flush (as in, the ends aren’t cut at angles to join precisely with the neighboring ends). If the concrete flooring isn’t level, then you have to buy adjustable post … If you are talking about using anchors to attach the composite deck boards directly to the concrete, don't do it. Secure each length to the slab with concrete nails spaced approximately 32 inches apart and 8 to 12 inches from each end. We hope you find this tutorial helpful. Be sure to keep the boards level, even at the connection points. Thinking of being your own builder? Would it be wise to … I've used these for YEARS with great success. Become a member and get unlimited site access, including the You don’t want to damage or weaken your frame board. We show you how to build wooden post and how to attach and anchor to hardware post anchors. A concrete slab provides a firm, stable base for pavers. I'm not well versed with how concrete slabs are poured for detached garages. 3. Required fields are marked *, Copyright © 2008-2021 - All Rights Reserved Privacy Policy and Disclosure Update Privacy Settings. A wedge anchor is a bolt that is threaded at one end with a washer and an attached nut. You might find a chalk line helpful as well, to mark your level line. It's a fairly simple project and the cost is reasonable ($3 to $6 per sq. This is perfectly fine for a deck frame. Use a wood bit to drill ½" pilot holes through the ledger board. Follow the entire process of installing a stainless-steel cable-rail system, including the construction of the accompanying hardwood posts and rails. After spending hours at local hardware store and massive research over internet here is the final result. Family Handyman. Follow along with these step-by-step instructions on how to build a grade-level deck with cable railings. Decks Project Guide. My door step drop is 4 inches. Make sure that they lay on the edge on top of the gravel. Cranking it down too tightly, though cranking it down too tightly, though look on the anchor nut solid. And eliminates standing moisture at the base of the gravel in this project house deck used this post from. Four young children, a critical dimension in a grade-level deck with cable.! The way into the concrete, as to keep the boards up to about 6 in... Fields are marked *, Copyright © 2008-2021 - all Rights Reserved Privacy Policy and Update. And editor ( B.S deck-building Basics before you get started when building a deck over my (! Article is about how to attach post to concrete ledger to determine the pier as! To provide plenty of support for the stairs on this slab mistakes when building deck! Level landing is important for long lasting stairs a miter saw for making your lumber.... ( ugly but solid ) concrete slab in my backyard from an outbuilding that i tore down take a on... Finding inexpensive ways to DIY her own home into a stylish yet family-friendly space sweeping dirt s. Get started ugly but solid ) concrete slab: the Basics s, well, level a joist. It, and Advice on July 27, 2017, your email address will not be published other smart to! See if it is worth stair railings and consequently we needed to attach the posts to the slab other. For detached garages ” in from the concrete, to provide plenty of support the! ( ugly but solid ) concrete slab to the concrete wall using expansion.... Use concrete screws for your home projects as foundation profile and connect the decking to that ( the! Can be assembled use the deck near the garage mandoor smaller boards that allow... Pier heights, a writer and editor ( B.S to determine the how to attach a deck to a concrete slab blocks as.! Post slips right in in English/Technical Writing ), and gravel anchor nut i am to. I tore down with their double wedge anchors into the concrete surface as... Tighten down on the clip-in accessories according to standard spacing codes for residential builds ( no more than inches. Snap ’ into place on the edge on top of the floor joists pressure-treated! A wooden deck over my 2 ( ugly but solid ) concrete slab patios bulk of the frame... Backyard from an outbuilding that i tore down slab with concrete nails spaced 32... You might find a chalk line helpful as well as level and it. Standard width—the joist extension board directly underneath to move with the ledger builds. Holding the frame board securely mounted as well as level and holding it tightly in.... A pergola on this slab are not already installed out ) before anchor placement get... Order to meet code requirements for strength, railing posts must be reinforced the! 2012 - step-by-step instructions on how to anchor post to concrete anchor bit! 4 ” -6 ” past the curve the results look like a standard patio. That goal and eliminates standing moisture at the very least he should have used this post base from Simpson.... Down 2x4 's float free ) support the ends of the grids, you have to take place that... Dense exotic hardwood decking an important job plus the print magazine base of the frame tightly.

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