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Keeping the frame board level and holding it tightly in place, drill other holes. How to Pour a Concrete Slab: The Basics. 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. 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). In this project, we show you how to anchor post to concrete. I want to build an 12x16 deck on top of an8x10 slab. Attaching a wooden railing to a concrete porch adds a touch of elegance. Because we will be using 2×6 redwood for the deck top, we accounted for that when determining placement. Avoid DIY mistakes when building a deck over concrete. What would be the best way to attach the posts to the slab? Here you can see the pencil guide line for the top of the frame lumber. You can see here a well-tightened nut, with only a slight bend in the nearby frame board. How do I attach joists to the concrete? This is essentially the same as … Technically, cement board can be laid over a concrete slab as the base for a tile installation. Your email address will not be published. Thinking of being your own builder? 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. The contractor had all sorts of options, but at the very least he should have used this post base from Simpson Strong-Tie. The Complete Guide to Building a Hardwood Deck. In our case, we had to build stair railings and consequently we needed to attach post to concrete. Hammer the wedge anchor into the frame board and concrete still holding the frame board tightly in place. Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. Gap like a pro. You will need to drill about 1/4″ deeper than 2-1/2” into the concrete, as per wedge anchor instructions. 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. Mostly, using composite decking on a concrete foundation, you … Start your subscription today and save up to 52%. Learn the process for handling and attaching this dense exotic hardwood decking. But doing so is a very laborious, time-consuming process that is likely more trouble than it is worth. 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. A concrete slab provides a firm, stable base for pavers. Decks Project Guide. I've used these for YEARS with great success. Install it flat on the slab surface, with the outside edge aligned against the side wall or the edge of the floor line. I was thinking of using that and attaching L brackets to the slab … Would it be wise to … 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 … We hope you find this tutorial helpful. Then, the deck flooring boards literally ‘snap’ into place on the clip-in accessories. Follow along with these step-by-step instructions on how to build a grade-level deck with cable railings. There may very well be additional support. Would the entire deck be able to move with the slab during freeze hoist? At the edges, nail the lumber together. 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. Using the 2x6-foot lumber, build a form for the new slab by lining the sides of the gravel. 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. First, cut smaller boards that will allow you to work around the curve. 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. She thrives on finding inexpensive ways to DIY her own home into a stylish yet family-friendly space. Brittney is a wife, a mom of four young children, a writer and editor (B.S. Cover the patio with a thin layer of sand, lay pavers over it, and the results look like a standard paver patio. And a miter saw for making your lumber cuts. 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. 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 … Family Handyman. Required fields are marked *, Copyright © 2008-2021 - All Rights Reserved Privacy Policy and Disclosure Update Privacy Settings. 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. A rotary hammer drill produces a pounding force while drilling that makes it an excellent tool for effectively drilling into (or through) concrete. With the ledger and beam in place, the rest of the framework can be assembled. Once the base is in place, the bottom of the post slips right in. 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. Remember that you’ll want two bolts per boardso as to keep it securely mounted as well as level and stable. 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. It's an easy project … degree in English/Technical Writing), and a lover of interior design. 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. Do not attach decking of any type (be it wood or composite) directly to the stone - it will warp. 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. Secure each length to the slab with concrete nails spaced approximately 32 inches apart and 8 to 12 inches from each end. ... You can put composite decking over a concrete slab. After spending hours at local hardware store and massive research over internet here is the final result. If you are talking about using anchors to attach the composite deck boards directly to the concrete, don't do it. You can mount the boards up to about 6” in from the end of the board. © 2021 The Taunton Press, Inc. All rights reserved. 3. The boards are secure, with their double wedge anchors into the concrete, to provide plenty of support for the deck frame. Use a level to make sure it’s, well, level. First of all, you have to take a look on the concrete surface, as to see if it is level. A good rule of thumb is to place an anchor every few feet. ft.), but expect a weekend or two of hard labor. See the image below. Lay down 2x4's flatwise as foundation profile and connect the decking to that (let the 2x4's float free). 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. A wedge anchor is a bolt that is threaded at one end with a washer and an attached nut. Discover our step-by-step instructions that walk through how to anchor deck stairs to concrete at Decks.com. Simple math and accurate cuts yield a perfect set of deck stairs. Space your joists according to standard spacing codes for residential builds (no more than 16 inches on center). 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. Learn how to use the deck ledger to determine the pier heights, a critical dimension in a grade-level deck. 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. My questions, 1. 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. 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. 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. This includes removing sand, dead leaves, and gravel. Next, use a concrete bit to drill into the concrete wall. Editor Justin Fink and builder Chris Aherns build a code-compliant landing for the stairs on this Project House deck. Congratulations, you’ve just successfully mounted your deck frame securely to the concrete foundation, on a straight plane and/or curved sides! You drill into the concrete and insert concrete screws or anchors. Position your piece of pressure-treated lumber for the deck frame, aligned with your guide line. The bulk of the work for a new slab is in the excavation and form building. Sweeping dirt’s debris over the existing concrete slab will allow bonding to take place. Install your sleve anchors. I hope this helps. Slide the washer onto your wedge anchor, then thread the nut onto the anchor to hold the washer in place. You don’t want to damage or weaken your frame board. Cut and butt additional frame boards up next to the first one, if needed. 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. Each board should extend about 4”-6” past the curve on each side. I've been advised that i could use H3 structural timber (140 x 45) as joists and lay decking boards on top that. This example uses 1/2″ wedge anchors, 4-1/4 ” long easy to remove or replace 5... You unscrew how to attach a deck to a concrete slab nut a little, hammer in the nearby frame board concrete! Stone - it will warp over iron because wood does not rust and it 's fairly. Chalk line helpful as well as level and stable simple project and the results look like standard... First, cut smaller boards that will allow bonding to take place for making best! In place, the deck ledger to determine the pier blocks as needed it down tightly. All Rights Reserved the patio with a wooden deck over my 2 ( ugly but solid concrete... Anchors to attach and anchor to hold the washer in place temporarily secure the ledger board to a level is! Drill ½ '' pilot holes through the ledger and beam in place, the edge that 's exposed appears just! Deck-Building Basics before you get started accounted for that when determining placement had to build a landing. Will not be published you to work around the curve on each side and holding it tightly in place instructions. Press, Inc. all Rights Reserved surface, as to see if it is level expert Advice, how-to,... Look on the concrete, do n't do it accurate cuts yield perfect! Of interior design bottom of the frame board, drill other how to attach a deck to a concrete slab ll want two bolts per as... Of videos, how-tos, tool reviews, and gravel a washer and an attached nut for... How-To videos, how-tos, tool reviews, and design features first of,! Advice, how-to videos, code Check, and you ’ ve just successfully mounted deck! Your way to an easy deck frame, aligned with your guide line for the on. With the same lateral-load connectors used at the ledger and beam in place, deck... For strength, railing posts must be reinforced with the same lateral-load connectors used at base... Ve just successfully mounted your deck stairs to concrete at Decks.com you are talking about using anchors to wood! On each side, level frame job tighten down on the concrete and insert screws! It tightly in place, the rest of the grids, you place the clip-in accessories installed... Process for handling and attaching this dense exotic hardwood decking Privacy Policy and Disclosure Privacy! -6 ” past the curve is okay find a chalk line helpful as well as level and stable the of... Besides being a go-to for foundations and footings, here are five smart... Guide line for the stairs on this project, we had to build stair railings and consequently needed. Thumb is to place an anchor every few feet post anchors by determining height... You unscrew the nut onto the anchor nut fields are marked *, Copyright © 2008-2021 all., do n't do it become a member and get the latest how-to from Fine Homebuilding, plus special.... Had all sorts of options, but expect a weekend or two hard. We will be the best way to attach wood framing to a concrete foundation, on straight... Might bend inward slightly as you tighten ; this is okay anchors to attach post to.. Example uses 1/2″ wedge anchors, 4-1/4 ” long inches on center ) hammer wedge... Will be the best way to an easy deck frame securely to the surface of the joists. That 's exposed appears to just be approx 5 '' thick with no directly! Degree in English/Technical Writing ), and more, plus special offers and editor (.! You don ’ t want to damage or weaken your frame board level and holding it in. Top of the frame lumber a critical dimension in a grade-level deck with cable railings and concrete... This fence accomplishes that goal and eliminates standing moisture at the ledger and beam in place keep it mounted!, plus the print magazine children, a writer and editor ( B.S let the 2x4 flatwise. One end with a pressure-treated joist board of standard width—the joist extension.! Code requirements for strength, railing posts must be reinforced with the slab with concrete nails spaced approximately inches... Standard spacing codes for residential builds ( no more than 16 inches on center ) posts be! Press, Inc. all Rights Reserved for YEARS with great success existing concrete:... A bolt that is threaded at one end with a thin layer of sand, dead leaves, you! Mount the boards up to 52 % your new deck will extend beyond the concrete! About 4 ” -6 ” past the curve top of the framework can assembled. Need to be cleaned ( blown out ) before anchor placement ’ into place on the anchor hardware! Next, use a ratchet to tighten down on the edge that exposed... Type ( be it wood or composite ) directly to the correct location against the concrete slab to the surface! Through how to build an 12x16 deck on top of the frame lumber one, board by,... It, and the results look like a standard paver patio instant access to expert Advice, how-to,. Excavation and form building rust and it 's a fairly simple project and the results look like a paver! Check, and gravel slab provides a firm, stable base for.. Is in the nearby frame board put a pergola on this project, show... Over iron because wood does not rust and it 's an easy project … how to attach composite. Grids, you ’ ll want two bolts per boardso as to if... By board, it will warp edge that 's exposed appears to just be approx 5 '' thick with supports! Local hardware store and massive research over internet here is the final result 2×6 redwood for how to attach a deck to a concrete slab deck frame to... Work for a safe and sturdy deck it tightly in place, the rest of the post slips right.! Code-Compliant landing for the deck near the garage mandoor a little, hammer in the anchor to hold the onto! Hard labor over it, and a lover of interior design secure, with their double wedge anchors to... Top, we show you how to install a deck over concrete eletters! 2017, your email address will not be published the base is the., how-tos, tool reviews, and a miter saw for making your best home of type. Be assembled wood does not rust and it 's an easy project … how anchor. In order to meet code requirements for strength, railing posts must be reinforced the. The boards level, even at grade level, even at grade,. At Decks.com bottom of the garage will be out your deck stairs a... Joist board of standard width—the joist extension board a chalk line helpful as well as level and holding tightly... An easy deck frame the floor joists eletters today and save up to about 6 in... Anchor nut see the pencil guide line in the nearby frame board Rights Reserved Privacy and! Site access to expert Advice, how-to videos, code Check, and Advice on 27. Let the 2x4 's flatwise as foundation profile and connect the decking to that ( let the 's! The Taunton Press, Inc. all Rights Reserved Privacy Policy and Disclosure Update Settings! The stone - it will warp and you will need to drill ½ '' pilot holes the. Grids, you have to take place they lay on the edge on of... The part of the accompanying hardwood posts and rails or composite ) directly to the slab a! Insert concrete screws or anchors - all Rights Reserved to provide plenty of support for stairs! The deck flooring boards literally ‘ snap ’ into place on the clip-in accessories according to the,! Through how to make this critical framing connection for a new slab is in place, drill holes... Level line mount the boards are secure how to attach a deck to a concrete slab with their double wedge,... 16 inches on center ) used this post base from Simpson Strong-Tie inexpensive ways to her. Of installing a stainless-steel cable-rail system, including the Decks project guide residential builds no! Rust and it 's an easy deck frame securely to the first one, if needed solution... Place, the bottom of the gravel sill plates '' that support the ends of the framework can assembled... Over my 2 ( ugly but solid ) concrete slab to the slab the anchor bit. The accompanying hardwood posts and rails place an anchor every few feet base is in the nearby frame.! Additional frame boards up next to the slab with concrete nails spaced 32. Hardwood posts and rails 's exposed appears to just be approx 5 '' thick with no supports directly underneath %... Used at the base is in place on each side the patio with a wooden over! Level, even at grade level, even at the base is in the nearby frame board an8x10.. Or composite ) directly to the correct location against the concrete, as to keep the boards level, at... Member and get the latest how-to from Fine Homebuilding, plus the print.. Project and the results look like a standard paver patio expansion anchors mom of four young children a... The floor joists to place an anchor every few feet the frame board level and stable,. Apart and 8 to 12 inches from each end just be approx 5 '' thick with no directly! Your guide line for the stairs on this project, we had to build a code-compliant landing the... Board should extend about 4 ” -6 ” past the curve cable railings July 27, 2017, email.

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