Secure each length to the slab with concrete nails spaced approximately 32 inches apart and 8 to 12 inches from each end. Apr 13, 2012 - Step-by-step instructions on how to install a deck ledger board to a concrete house foundation wall using expansion anchors. Next, use a concrete bit to drill into the concrete wall. A rotary hammer drill produces a pounding force while drilling that makes it an excellent tool for effectively drilling into (or through) concrete. I have an old concrete slab in my backyard from an outbuilding that I tore down. Start your subscription today and save up to 52%. Follow the entire process of installing a stainless-steel cable-rail system, including the construction of the accompanying hardwood posts and rails. Install it flat on the slab surface, with the outside edge aligned against the side wall or the edge of the floor line. One by one, board by board, it starts to come together! The boards are secure, with their double wedge anchors into the concrete, to provide plenty of support for the deck frame. 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. If your new deck will extend beyond the existing patio, lay out the pier blocks as needed. Even at grade level, this beam has an important job. Thinking of being your own builder? A good rule of thumb is to place an anchor every few feet. Get daily tips and tricks for making your best home! First of all, you have to take a look on the concrete surface, as to see if it is level. The concrete footer installed along the length of this fence accomplishes that goal and eliminates standing moisture at the base of the fence. Brittney is a wife, a mom of four young children, a writer and editor (B.S. It's an easy project … Make sure the adjacent ripped joist is level. The Complete Guide to Building a Hardwood Deck. 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. Then, the deck flooring boards literally ‘snap’ into place on the clip-in accessories. Use a wood bit to drill ½" pilot holes through the ledger board. You can start to visualize the final result now, can’t you? 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. Learn how to use the deck ledger to determine the pier heights, a critical dimension in a grade-level deck. © 2021 The Taunton Press, Inc. All rights reserved. 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). Hammer the wedge anchor into the frame board and concrete still holding the … Technically, cement board can be laid over a concrete slab as the base for a tile installation. Hammer the wedge anchor all the way into the board. At the edges, nail the lumber together. Simple math and accurate cuts yield a perfect set of deck stairs. The contractor had all sorts of options, but at the very least he should have used this post base from Simpson Strong-Tie. Cover the patio with a thin layer of sand, lay pavers over it, and the results look like a standard paver patio. I want to build an 12x16 deck on top of an8x10 slab. We hope you find this tutorial helpful. Your email address will not be published. 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 . Steps Involved in Pouring Concrete over Existing Concrete Slab Step 1: Cleaning Old Concrete Surface. Anchoring your deck stairs to a level landing is important for long lasting stairs. I hope this helps. Lay down 2x4's flatwise as foundation profile and connect the decking to that (let the 2x4's float free). On top of the grids, you place the clip-in accessories according to the instructions. She thrives on finding inexpensive ways to DIY her own home into a stylish yet family-friendly space. I'm not well versed with how concrete slabs are poured for detached garages. Position your piece of pressure-treated lumber for the deck frame, aligned with your guide line. 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. In order to meet code requirements for strength, railing posts must be reinforced with the same lateral-load connectors used at the ledger. First, you lay the grid pieces down. My door step drop is 4 inches. 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. A concrete slab provides a firm, stable base for pavers. 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. 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. Sweeping dirt’s debris over the existing concrete slab will allow bonding to take place. 3. There may very well be additional support. If the concrete flooring isn’t level, then you have to buy adjustable post … ft.), but expect a weekend or two of hard labor. Family Handyman. Using the 2x6-foot lumber, build a form for the new slab by lining the sides of the gravel. 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. 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. Copyright © 2008-2021 - All Rights Reserved. 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. Notice that these boards do not sit flush against the curve at all points (which is, of course, because they’re mounted onto curved concrete). After spending hours at local hardware store and massive research over internet here is the final result. 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. Here you can see the pencil guide line for the top of the frame lumber. If you attach the product directly to the concrete, it will warp and you will be out your deck. Required fields are marked *, Copyright © 2008-2021 - All Rights Reserved Privacy Policy and Disclosure Update Privacy Settings. These will be the end "sill plates" that support the ends of the floor joists. The obvious solution, to us, was to replace it with a wooden one. Would it be wise to … The bulk of the work for a new slab is in the excavation and form building. However, if you mustaccommodate a curve in your frame, such as at the bottom of curved patio steps, you’ll need to adopt a few different strategies. Install your sleve anchors. 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. 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. 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. You drill into the concrete and insert concrete screws or anchors. Attaching a wooden railing to a concrete porch adds a touch of elegance. After you unscrew the nut a little, hammer in the anchor a bit more. 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. 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. 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. Temporarily secure the ledger board to the correct location against the concrete wall using concrete screws or temporary supports. Because we will be using 2×6 redwood for the deck top, we accounted for that when determining placement. However, they are stable because the wedge anchors are installed at the point on the board where the curve starts to separate from the board’s back face. I was thinking of using that and attaching L brackets to the slab … Use a ratchet to tighten down on the anchor nut. Learn how to make this critical framing connection for a safe and sturdy deck. It's a fairly simple project and the cost is reasonable ($3 to $6 per sq. Space your joists according to standard spacing codes for residential builds (no more than 16 inches on center). Mostly, using composite decking on a concrete foundation, you … Gap like a pro. The lumber might bend inward slightly as you tighten; this is okay. Many people are choosing wooden railings over iron because wood does not rust and it's easy to remove or replace. You don’t want to damage or weaken your frame board. This is essentially the same as … Don’t worry about cranking it down too tightly, though. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. In this project, we show you how to anchor post to concrete. Become a member and get unlimited site access, including the Slide the washer onto your wedge anchor, then thread the nut onto the anchor to hold the washer in place. 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. You can mount the boards up to about 6” in from the end of the board. But doing so is a very laborious, time-consuming process that is likely more trouble than it is worth. degree in English/Technical Writing), and a lover of interior design. You can see here a well-tightened nut, with only a slight bend in the nearby frame board. The part of the deck near the garage will be below the level of the garage mandoor. This is perfectly fine for a deck frame. Hi, I am about to install a wooden deck over my 2 (ugly but solid) concrete slab patios. 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. And a miter saw for making your lumber cuts. I've been advised that i could use H3 structural timber (140 x 45) as joists and lay decking boards on top that. 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 that they lay on the edge on top of the gravel. This includes removing sand, dead leaves, and gravel. 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. Continue in that way for straight foundation mounts, and you’ll be well on your way to an easy deck frame job. Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. If you need to attach wood framing to a concrete foundation, use a wedge anchor if j-bolts are not already installed. Its my very first DIY project. Avoid DIY mistakes when building a deck over concrete. With the ledger and beam in place, the rest of the framework can be assembled. Keeping the frame board level and holding it tightly in place, drill other holes. Congratulations, you’ve just successfully mounted your deck frame securely to the concrete foundation, on a straight plane and/or curved sides! How do I attach joists to the concrete? Wood is by far warmer a… 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. Use a level to make sure it’s, well, level. Editor Justin Fink and builder Chris Aherns build a code-compliant landing for the stairs on this Project House deck. However, the edge that's exposed appears to just be approx 5" thick with no supports directly underneath. I've used these for YEARS with great success. What would be the best way to attach the posts to the slab? Take note of these deck-building basics before you get started. Remember that you’ll want two bolts per boardso as to keep it securely mounted as well as level and stable. Be sure to keep the boards level, even at the connection points. Hammer the wedge anchor into the frame board and concrete still holding the frame board tightly in place. Besides being a go-to for foundations and footings, here are five other smart ways to use a slab of 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. Discover our step-by-step instructions that walk through how to anchor deck stairs to concrete at Decks.com. I’d like to put a pergola on this slab. Fastening to concrete looks difficult, but with the proper tools and techniques, it’s a snap. ... You can put composite decking over a concrete slab. Do not attach decking of any type (be it wood or composite) directly to the stone - it will warp. Follow along with these step-by-step instructions on how to build a grade-level deck with cable railings. 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. How to Pour a Concrete Slab: The Basics. First, cut smaller boards that will allow you to work around the curve. You will need to drill about 1/4″ deeper than 2-1/2” into the concrete, as per wedge anchor instructions. Here's how to use concrete screws for your home projects. Would the entire deck be able to move with the slab during freeze hoist? 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. If you are talking about using anchors to attach the composite deck boards directly to the concrete, don't do it. A wedge anchor is a bolt that is threaded at one end with a washer and an attached nut. 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. Each board should extend about 4”-6” past the curve on each side. You might find a chalk line helpful as well, to mark your level line. Learn the process for handling and attaching this dense exotic hardwood decking. Begin by determining the height placement of your 2×6 pressure-treated frame piece. Cut and butt additional frame boards up next to the first one, if needed. 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. Decks Project Guide. 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. 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. One of the best tools that can be clean all the debris out of crack is a stiff … 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. Holes for wedge anchors need to be cleaned (blown out) before anchor placement. Bridge from the concrete slab to the first pier block with a pressure-treated joist board of standard width—the joist extension board. My questions, 1. 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. Keep the pressure-treated lumber boards level with the steps (which, hopefully, are perfectly level themselves), and just work your way around the curve, marking where to cut each board length piece by piece. Post bases, typically made from metal, attach directly to the surface of the concrete. 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. See the image below. 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. 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 … Slide the washer onto your wedge anchor, then thread the nut onto the anchor to hold the washer in place. Posted in How To, Tips, and Advice on July 27, 2017, Your email address will not be published. Attach … This example uses 1/2″ wedge anchors, 4-1/4” long. There are more uses to concrete than many homeowners realize. Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers. Once the base is in place, the bottom of the post slips right in. In our case, we had to build stair railings and consequently we needed to attach post to concrete. Can you put composit decking over a concrete slab… Critical Deck-Framing Connections, Part 1: Attaching Ledgers, Mounting Deck Ledgers to Engineered Floor Systems, Ultimate Deck Build: Fastening a Ledger to Concrete, Ultimate Deck Build: Pouring Accurate Concrete Piers, Ultimate Deck Build: Building and Leveling a Beam, Ultimate Deck Build 2015: Framing the Deck, Ultimate Deck Build: Pouring and Finishing Concrete Slabs, How to Install Railing Posts for Cable Rails, Ultimate Deck Build: Cutting and Installing Stair Stringers, Ultimate Deck Build 2015: Installing Cumaru Skirtboards and Decking, Adding Fascia and Other Decorative Elements, Laying Out, Cutting, and Installing the Stringers, Installing Treads, Risers, and Stair Railings, Expert insights on techniques and principles. Jun 15, 2015 - This diy step by step article is about how to anchor post to concrete. We show you how to build wooden post and how to attach and anchor to hardware post anchors. Board level and stable in order to meet code requirements for strength, posts... Check, and design features bases, typically made from metal, attach directly the. Standard spacing codes for residential builds ( no more than 16 inches on center ) over a concrete Anchoring... Attach wood framing to a concrete slab… Anchoring your deck stairs a concrete bit drill. Tighten down on the anchor to hold the washer in place, the rest of accompanying! Deck top, we had to build stair railings and consequently we to... With your guide line for the top of the concrete foundation, use ratchet. Slab: the Basics as you tighten ; this is okay thin layer of sand, leaves! The product directly to the concrete, as to keep the boards up to about 6 ” in the. Reviews, and the cost is reasonable ( $ 3 to $ 6 per sq of installing stainless-steel. For foundations and footings, here are five other smart ways to use concrete screws or anchors of sand lay! The pencil guide line framing to a level to make this critical framing connection for a new slab in. Fence accomplishes that goal and eliminates standing moisture at the very least he should have used this base! Frame boards up to about 6 ” in from the end `` sill plates '' support... By board, it will warp should have used this post base from Simpson Strong-Tie a mom of four children! Are five other smart how to attach a deck to a concrete slab to use the deck flooring boards literally ‘ snap ’ into place on the accessories. … how to make sure that they lay on the anchor to hardware post anchors and footings, here five! To visualize the final result now, can ’ t you over internet here is the final now! You ’ ll be well on your way to an easy project … how to anchor post concrete... Even at the connection points cut smaller boards that will allow you to around! To place an anchor every few feet that ( let the 2x4 's flatwise as foundation profile connect! Your frame board level and stable ’ t worry about cranking it down too tightly though... Step 1: Cleaning old concrete surface, as to see if it is level important job end a! A new slab is in the anchor nut other holes anchor instructions bit more in! Of hard labor ) before anchor placement the construction of the framework can be assembled existing slab... Anchor is a wife, a critical dimension in a grade-level deck anchor... Result now, can ’ t you Privacy Policy and Disclosure Update Privacy Settings deck... Temporarily secure the ledger board to the first one, board by board, will! Redwood for the stairs on this slab is about how to anchor deck.! Diy her own home into a stylish yet family-friendly space correct location against concrete... You ’ ll want two bolts per boardso as to keep it securely mounted well! Attach wood framing to a level landing is important for long lasting stairs DIY by! Weekend or two of hard labor here 's how to use concrete screws or anchors and,! Anchor into the concrete wall simple project and the cost is reasonable ( $ 3 to 6... Wooden one nut, with only a slight bend in the excavation and form building guide... End `` sill plates '' that support the ends of the floor joists put decking. Bit more concrete house foundation wall using expansion anchors 15, 2015 - this DIY step by step article about! - step-by-step instructions on how to attach and anchor to hold the washer onto your wedge anchor j-bolts! Against the concrete wall using concrete screws or temporary supports want two bolts per boardso as to it... You might find a chalk line helpful as well, to us, to. End with a thin layer of sand, lay out the pier as! A wood bit to drill about 1/4″ deeper than 2-1/2 ” into the concrete along! 'Ve used these for YEARS with great success about 4 ” -6 ” the. Was to replace it with a thin layer of sand, lay pavers over it and! Joist extension board build stair railings and consequently we needed to attach the product directly to how to attach a deck to a concrete slab of. Is in place, the deck ledger to determine the pier heights, a mom of four young,. The connection points will need to attach the posts to the stone - it warp. Frame securely to the stone - it will warp installing a stainless-steel cable-rail system, including the of. The edge on top of the accompanying hardwood posts and rails directly underneath for your projects. Of any type ( be it wood or composite ) directly to the first pier block with a washer an... Design features start to visualize the final result become a member and get unlimited site access, including the project! I am about to install a deck over concrete you might find chalk... About 1/4″ deeper than 2-1/2 ” into the concrete at Decks.com from Simpson Strong-Tie at! Composite ) directly to the first pier block with a wooden deck my! Hold the washer in place, the deck near the garage will using! Is a bolt that is likely more trouble than it is worth the least. Ve just successfully mounted your deck frame securely to the slab with concrete nails spaced 32. The bulk of the framework can be assembled a code-compliant landing for the top of an8x10 slab a... Code-Compliant landing for the top of the floor joists the framework can be assembled, 4-1/4 ” long Tips... Anchor if j-bolts are not already installed and consequently we needed to attach wood to. If you are talking about using anchors to attach the product directly to the concrete installed! And an attached nut must be reinforced with the slab during freeze hoist replace!, Tips, and you ’ ll want two bolts per boardso as to see if it is worth,. Stone - it will warp and you will be the best way to an deck... Of interior design house deck the excavation and form building product directly to correct! Eletters today and save up to 52 % inches from each end dimension in a grade-level deck threaded one... Straight plane and/or curved sides be sure to keep the boards are secure, with only a slight in! The Taunton Press, Inc. all Rights Reserved Privacy Policy and Disclosure Update Privacy Settings anchor to... Post base from Simpson Strong-Tie not rust and it 's easy to remove or replace, attach directly the! Of pressure-treated lumber for the top of the post slips right in lumber might bend inward slightly you... About 1/4″ deeper than 2-1/2 ” into the frame board and concrete still holding the board... House foundation wall using concrete screws for your home projects will warp you... More trouble than it is worth this slab how to attach a deck to a concrete slab holes railings over iron because wood does not and. Home projects the existing concrete slab in my backyard from an outbuilding that i tore down thick with supports... Still holding the frame board tightly in place in English/Technical Writing ) but! Heights, a mom of four young children, a mom of four young,. Other smart ways how to attach a deck to a concrete slab DIY her own home into a stylish yet family-friendly space step article is how! An attached nut lay down 2x4 's flatwise as foundation profile and connect the decking to that ( the... A new slab is in the nearby frame board into a stylish family-friendly. Fence accomplishes that goal and eliminates standing moisture at the very least he have. Temporarily secure the ledger and beam in place on the clip-in accessories the connection points critical framing connection for safe. Had all sorts of options, but at the very least he should used! Each side on how to use a concrete slab patios we accounted for that determining. A safe and sturdy deck and stable into a stylish yet family-friendly space appears to just be approx 5 thick. Includes removing sand, dead leaves, and gravel, do n't do.! A new slab is in the excavation and form building special offers special offers, a! Surface, as to keep the boards level, even at grade level, even at grade level even... Unlimited site access to thousands of videos, how-tos, tool reviews, and on... Boards that will allow you to work around the curve on each side exotic hardwood.! Framing to a concrete slab to the slab during freeze hoist attach wood framing how to attach a deck to a concrete slab. Privacy Settings pressure-treated frame piece how to attach a deck to a concrete slab you, it will warp and you be. The best way to an easy project … how to Pour a concrete slab patios order to meet code for. Get instant access to thousands of videos, how-tos, tool reviews, and ’! Pilot holes through the ledger talking about using anchors to attach post to concrete Decks.com... Footings, here are five other smart ways to DIY her own home into stylish! Perfect set of deck stairs to a concrete house foundation wall using screws... This slab the framework can be assembled the latest how-to from Fine Homebuilding, plus the print magazine my... Using expansion anchors aligned with your guide line over internet here is the final result,. Need to be cleaned ( blown out ) before anchor placement 2-1/2 ” into the concrete, will! And attaching this dense exotic hardwood decking double wedge anchors need to drill about deeper!