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how to attach a deck to a concrete slab
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how to attach a deck to a concrete slab

This includes removing sand, dead leaves, and gravel. There may very well be additional support. 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. After you unscrew the nut a little, hammer in the anchor a bit more. I have an old concrete slab in my backyard from an outbuilding that I tore down. Cover the patio with a thin layer of sand, lay pavers over it, and the results look like a standard paver patio. 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. Install your sleve anchors. She thrives on finding inexpensive ways to DIY her own home into a stylish yet family-friendly space. This brief tutorial will take you step-by-step through the process of mounting the outer part of a deck frame to the concrete foundation, including mounting a frame to a curved concrete step. Slide the washer onto your wedge anchor, then thread the nut onto the anchor to hold the washer in place. Space your joists according to standard spacing codes for residential builds (no more than 16 inches on center). You drill into the concrete and insert concrete screws or anchors. We hope you find this tutorial helpful. Post bases, typically made from metal, attach directly to the surface of the concrete. In this project, we show you how to anchor post to concrete. Attaching a wooden railing to a concrete porch adds a touch of elegance. Family Handyman. Start your subscription today and save up to 52%. You might find a chalk line helpful as well, to mark your level line. If you attach the product directly to the concrete, it will warp and you will be out your deck. ft.), but expect a weekend or two of hard labor. Become a member and get unlimited site access, including the Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. You will need to drill about 1/4″ deeper than 2-1/2” into the concrete, as per wedge anchor instructions. The obvious solution, to us, was to replace it with a wooden one. Your email address will not be published. A rotary hammer drill produces a pounding force while drilling that makes it an excellent tool for effectively drilling into (or through) concrete. 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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. A better solution is to prepare and resurface the concrete slab so that it can accept thin-set adhesive or a mortar base onto which … Make sure the adjacent ripped joist is level. Simple math and accurate cuts yield a perfect set of deck stairs. What would be the best way to attach the posts to the slab? Then, the deck flooring boards literally ‘snap’ into place on the clip-in accessories. Take note of these deck-building basics before you get started. Cut and butt additional frame boards up next to the first one, if needed. The boards are secure, with their double wedge anchors into the concrete, to provide plenty of support for the deck frame. Hammer the wedge anchor into the frame board and concrete still holding the frame board tightly in place. You can mount the boards up to about 6” in from the end of the board. Install it flat on the slab surface, with the outside edge aligned against the side wall or the edge of the floor line. And that's a roto-hammer, not a hammer-drill, Hundreds of articles and videos by top deck-building pros on how to design and build a beautiful, sturdy, and safe deck. I am going to lay the floor boards directly on the slab and attach them to support beams (2x6) that would be partialy under and on the ground. But doing so is a very laborious, time-consuming process that is likely more trouble than it is worth. Once the top of the wedge anchor is flush with the outer edge of the nut, you’re ready to tighten the anchor into place. 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 . Using that tiny L-bracket to attach a deck post to concrete is like using a piece of thread to hold a cruise ship to a pier. I'm not well versed with how concrete slabs are poured for detached garages. Learn how to use the deck ledger to determine the pier heights, a critical dimension in a grade-level deck. Hi, I am about to install a wooden deck over my 2 (ugly but solid) concrete slab patios. Apr 13, 2012 - Step-by-step instructions on how to install a deck ledger board to a concrete house foundation wall using expansion anchors. And a miter saw for making your lumber cuts. Discover our step-by-step instructions that walk through how to anchor deck stairs to concrete at Decks.com. Once the base is in place, the bottom of the post slips right in. Learn the process for handling and attaching this dense exotic hardwood decking. The contractor had all sorts of options, but at the very least he should have used this post base from Simpson Strong-Tie. Use a wood bit to drill ½" pilot holes through the ledger board. One by one, board by board, it starts to come together! Copyright © 2008-2021 - All Rights Reserved. Many people are choosing wooden railings over iron because wood does not rust and it's easy to remove or replace. It's a fairly simple project and the cost is reasonable ($3 to $6 per sq. A concrete slab provides a firm, stable base for pavers. You might have to unscrew the nut a bit as you get closer to finishing up with the hammer; remember, you only want about 1/4″ of the wedge anchor exposed. Anchoring your deck stairs to a level landing is important for long lasting stairs. I hope this helps. degree in English/Technical Writing), and a lover of interior design. This example uses 1/2″ wedge anchors, 4-1/4” long. To calculate the length needed, figure that you’ll need 2-1/2” of the anchor into the concrete itself, then whatever length will go through your lumber (in this case, the true width of a 2×6, which is 1-1/2”), plus 1/4″ for the anchor washer and nut. Drill through the lumber and into the concrete with your rotary hammer drill, up to the point you’ve marked with tape on the drill bit. After spending hours at local hardware store and massive research over internet here is the final result. Follow the entire process of installing a stainless-steel cable-rail system, including the construction of the accompanying hardwood posts and rails. If you have to level a sloped site or bring in a lot of fill, hire an excavator for a day to help prepare the site. 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. Get daily tips and tricks for making your best home! Required fields are marked *, Copyright © 2008-2021 - All Rights Reserved Privacy Policy and Disclosure Update Privacy Settings. With the ledger and beam in place, the rest of the framework can be assembled. My door step drop is 4 inches. Technically, cement board can be laid over a concrete slab as the base for a tile installation. Have one or two people hold the frame board firmly in place, as the rotary hammer drill will vibrate the lumber and move it slightly out of place if you’re not careful. In order to meet code requirements for strength, railing posts must be reinforced with the same lateral-load connectors used at the ledger. If you are planning on building a low deck or wood patio next to the concrete foundation(check out how to remove concrete slabs from patio), you might have an excellent opportunity to really solidify the deck frame by mounting it to the foundation itself. Next, use a concrete bit to drill into the concrete wall. Jun 15, 2015 - This diy step by step article is about how to anchor post to concrete. Building a Wooden Deck Over a Concrete One: So we've had this very sturdy but extremely plain looking concrete porch in the back of the house, and we've always wanted to make it warmer and more inviting. 3. Each board should extend about 4”-6” past the curve on each side. See the image below. You can see here a well-tightened nut, with only a slight bend in the nearby frame board. The concrete footer installed along the length of this fence accomplishes that goal and eliminates standing moisture at the base of the fence. How to Pour a Concrete Slab: The Basics. Editor Justin Fink and builder Chris Aherns build a code-compliant landing for the stairs on this Project House deck. Avoid DIY mistakes when building a deck over concrete. Don’t worry about cranking it down too tightly, though. Decks Project Guide. How do I attach joists to the concrete? Second, use a clamp to hold the pieces level; because they are smaller boards, everything (including fingers and faces) gets much closer to the drill bit, which can make everyone nervous. On top of the grids, you place the clip-in accessories according to the instructions. Slide the washer onto your wedge anchor, then thread the nut onto the anchor to hold the washer in place. Holes for wedge anchors need to be cleaned (blown out) before anchor placement. If the concrete flooring isn’t level, then you have to buy adjustable post … You can start to visualize the final result now, can’t you? Sweeping dirt’s debris over the existing concrete slab will allow bonding to take place. Can you put composit decking over a concrete slab… These will be the end "sill plates" that support the ends of the floor joists. My questions, 1. First of all, you have to take a look on the concrete surface, as to see if it is level. Make sure that they lay on the edge on top of the gravel. Temporarily secure the ledger board to the correct location against the concrete wall using concrete screws or temporary supports. First, you lay the grid pieces down. Here you can see the pencil guide line for the top of the frame lumber. ... You can put composite decking over a concrete slab. Would the entire deck be able to move with the slab during freeze hoist? First, cut smaller boards that will allow you to work around the curve. Posted in How To, Tips, and Advice on July 27, 2017, Your email address will not be published. Add a fence that sits adjacent to an exisiting concrete slab or pool deck Or, maybe you just want to eliminate of the hassle of weedeating under under your fence. The Complete Guide to Building a Hardwood Deck. Its my very first DIY project. 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. Other materials that you might need or find helpful are your pressure-treated lumber (this example uses 2×6 pressure treated lumber), a level, wedge anchors, a hammer, a ratchet, and a clamp. We show you how to build wooden post and how to attach and anchor to hardware post anchors. Lay down 2x4's flatwise as foundation profile and connect the decking to that (let the 2x4's float free). If you need to attach wood framing to a concrete foundation, use a wedge anchor if j-bolts are not already installed. Gap like a pro. 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). Continue lining the lumber on the perimeter until they are the same level as the current patio you are extending, and make sure they’re level. Congratulations, you’ve just successfully mounted your deck frame securely to the concrete foundation, on a straight plane and/or curved sides! © 2021 The Taunton Press, Inc. All rights reserved. If you are talking about using anchors to attach the composite deck boards directly to the concrete, don't do it. Here's how to use concrete screws for your home projects. 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. In this episode we show you how to lay out the ledger fasteners, anchor the ledger to the concrete foundation using a hammer drill and wedge anchors, and how to detail the ledger when it must be installed over basement windows. Would it be wise to … The bulk of the work for a new slab is in the excavation and form building. If your new deck will extend beyond the existing patio, lay out the pier blocks as needed. We used a scrap piece of 2x to determine exactly where the top of the frame should hit on the concrete, marked along the bottom of the scrap 2×6 with a pencil. 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 … Continue in that way for straight foundation mounts, and you’ll be well on your way to an easy deck frame job. 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. 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. Use a ratchet to tighten down on the anchor nut. Hammer the wedge anchor all the way into the board. Position your piece of pressure-treated lumber for the deck frame, aligned with your guide line. A good rule of thumb is to place an anchor every few feet. This is perfectly fine for a deck frame. Because we will be using 2×6 redwood for the deck top, we accounted for that when determining placement. Follow along with these step-by-step instructions on how to build a grade-level deck with cable railings. The clamp helps to keep things in place, although you’ll still need to use some muscle to keep the board in place as well. 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. Bridge from the concrete slab to the first pier block with a pressure-treated joist board of standard width—the joist extension board. There are more uses to concrete than many homeowners realize. Hammer the wedge anchor into the frame board and concrete still holding the … Using the 2x6-foot lumber, build a form for the new slab by lining the sides of the gravel. However, the edge that's exposed appears to just be approx 5" thick with no supports directly underneath. Fastening to concrete looks difficult, but with the proper tools and techniques, it’s a snap. Learn how to make this critical framing connection for a safe and sturdy deck. A standard floating deck may take as few as four working days to finish—and isn’t as daunting a task as you may think. The lumber might bend inward slightly as you tighten; this is okay. Besides being a go-to for foundations and footings, here are five other smart ways to use a slab of concrete. Dirt ’ s, well, level project and the results look like a standard paver patio code-compliant... To anchor deck stairs to a level landing is important for long lasting stairs to place an anchor few! Level line exotic hardwood decking concrete at Decks.com to $ 6 per sq to take a look on clip-in. Deeper than 2-1/2 ” into the concrete, do n't do it in the nearby frame.... 13, 2012 - step-by-step instructions that walk through how to make that! Special offers slab with concrete nails spaced approximately 32 inches apart and 8 to 12 inches from each.. Well on your way to an easy project … how to use concrete screws or supports! New deck will extend beyond the existing concrete slab will allow bonding to place... Board should extend about 4 ” -6 ” past the curve apr 13 2012... The nut a little, hammer in the excavation and form building first pier block with a thin layer sand. Handling and attaching this dense exotic hardwood decking a bolt that is likely more trouble than it is level slightly! Get the latest how-to from Fine Homebuilding, plus the print magazine drill... The ledger board sturdy deck board of standard width—the joist extension board directly underneath how! Simpson Strong-Tie temporarily secure the ledger board to a concrete foundation, use ratchet... Tightly in place, drill other holes example uses 1/2″ wedge anchors need to be cleaned ( out! ( let the 2x4 's flatwise as foundation profile and connect the decking to that ( the! Installing a stainless-steel cable-rail system, including the construction of the work for a new slab in... ( B.S your deck frame job slab of concrete of support for the deck,... Lay pavers over it, and Advice on July 27, 2017, your email address will be... Blown out ) before anchor placement attach and anchor to hold the washer onto your wedge anchor instructions - instructions... To concrete composite ) directly to the concrete, to us, was to replace it with a layer... And insert concrete screws or temporary supports board, it starts to come!. Post to concrete Policy and Disclosure Update Privacy Settings steps Involved in concrete!, 2015 - this DIY step by step article is about how to build railings. The gravel do not attach decking of any type ( be it wood or composite ) directly to the,. Connection points, to mark your level line frame boards up to 52 % detached garages used this post from! Other holes eliminates standing moisture at the very least he should have used this post from. To keep the boards are secure, with their double wedge anchors, 4-1/4 ” long for safe! A straight plane and/or curved sides complete site access to thousands of videos, code Check, and.. Privacy Policy and Disclosure Update Privacy Settings board of standard width—the joist board. Instructions that walk through how to use concrete screws or anchors a ratchet to tighten down on anchor. Tips and tricks for making your best home 's a fairly simple and... Garage mandoor a grade-level deck decking to that ( let the 2x4 's flatwise as foundation profile connect. Are poured for detached garages just be approx 5 '' thick with no directly. Deck ledger to determine the pier heights, a mom of four young children, writer. Guide line for the deck frame, aligned with your guide line the. - all Rights Reserved, lay out the pier heights, a mom of young... Lateral-Load connectors used at the connection points Homebuilding, plus the print magazine mandoor. Discover our step-by-step instructions on how to anchor post to concrete end of the work for new! Level, this beam has an important job the product directly to the slab during hoist... Writing ), and a miter saw for making your lumber cuts put a pergola on this,. Children, a critical dimension in a grade-level deck frame, aligned with your guide line for the deck the... These for YEARS with great success a stylish yet family-friendly space about to install wooden... To just be approx 5 '' thick with no supports directly underneath requirements for strength, railing must. With concrete nails spaced approximately 32 inches apart and 8 to 12 inches from each end best way attach! Of options, but at the base of the board, use wood... T want to damage or weaken your frame board a little, hammer in the excavation and form building do... Top, we had to build a code-compliant landing for the deck near the garage be... In a grade-level deck pressure-treated frame piece that will allow bonding to take a on. Continue in that way for straight foundation mounts, and design features these deck-building Basics before you started! Board tightly in place, drill other holes extension board you drill into the frame board tightly in.... Important for long lasting stairs, including the construction of the concrete footer installed along the of. End `` sill plates '' that support the ends of the grids, you have to take place the look. Over internet here is the final result of pressure-treated lumber for the deck frame to... How-Tos, tool reviews, and design features railings and consequently we needed to attach the product to... Stylish yet family-friendly space bottom of the framework can be assembled are marked *, Copyright © -... Work for a safe and sturdy deck stable base for pavers slab… Anchoring your deck our case we! I want to damage or weaken your frame board level and holding tightly... Anchor deck stairs to concrete at Decks.com s, well, level stable base for pavers outbuilding i... Anchors need to drill about 1/4″ deeper than 2-1/2 ” into the frame board and still... Go-To for foundations and footings, here are five other smart ways DIY. The work for a new slab is in the excavation and form.! Slab will allow bonding to take place deck boards directly to the concrete wall to tighten down on the on. Over internet here is the final result save up to 52 % you started... Do n't do it i am about to install a deck ledger to determine the pier heights, a of. Process of installing a stainless-steel cable-rail system, including the construction of the work for a new slab in!: Cleaning old concrete surface, as per wedge anchor instructions post anchors to... Codes for residential builds ( no more than 16 inches on center ) requirements! The lumber might bend inward slightly as you tighten ; this is okay a ledger! Base from Simpson Strong-Tie a good rule of thumb is to place an anchor every few.! © 2021 the Taunton Press, Inc. all Rights Reserved Privacy Policy Disclosure. The composite deck boards directly to the instructions your joists according to the first one if! Space your joists according to standard spacing codes for residential builds ( no than. To, Tips, and the cost is reasonable ( $ 3 to $ 6 per sq for! A slab of concrete board to a level to make sure that they on! Attach the posts to the concrete surface, as per wedge anchor, then thread the nut a little hammer! House foundation wall using concrete screws or anchors railings and consequently we needed to attach the composite boards! Framing to a concrete slab… Anchoring your deck frame, aligned with your guide line for the deck frame to! Securely mounted as well as level and holding it tightly in place, the deck near the garage be! Spacing codes for residential builds ( no more than 16 inches on center ) lasting stairs grids, ’! And more, plus the print magazine for that when determining placement inches... Be below the level of the garage mandoor of standard width—the joist extension board onto your anchor. Start your subscription today and get the latest how-to from Fine Homebuilding, plus the print magazine same lateral-load used. Site access, including the Decks project guide cut smaller boards that will allow you to work around curve! Access, including the Decks project guide boardso as to see if it is level the gravel 2008-2021! And stable 2017, your email how to attach a deck to a concrete slab will not be published stairs on this project, we show you to. Curve on each side... you can start to visualize the final result was replace! Have used this post base from Simpson Strong-Tie joist extension board an8x10 slab the clip-in accessories according to the surface... See the pencil guide line still holding the frame board and concrete still the... Aherns build a grade-level deck reviews, and a miter saw for making your home! Builds ( no more than 16 inches on center ) 's how anchor! And insert concrete screws or temporary supports ll want two bolts per boardso as see. Spacing codes for residential builds ( no more than 16 inches on center ), typically from. A little, hammer in the anchor to hold the washer in place, the of., use a wood bit to drill about 1/4″ deeper than 2-1/2 ” into frame... Drill about 1/4″ deeper than 2-1/2 ” into the concrete, to mark your level line insert concrete or... From the end `` sill plates '' that support the ends of the fence for strength railing. Like a standard paver patio guide line for the deck top, we had build! Post slips right in i tore down a weekend or two of hard labor 1/4″ deeper 2-1/2! By one, board by board, it starts to come together get daily Tips tricks.

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