how to build a raised deck attached to house

1, and some alternative styles in Fig. To solve the problem caused by wetting/drying cycles. by Brian (Ontario, Canada) We live in Ontario, Canada and plan to build an elevated deck at the back of our house with stairs to access the main floor - which is above our walk-out basement doors. For more detailed information, we recommend consulting the installation guides provided by the manufacturer of your decking materials. But it can delay rot for several additional years. Avoid Saturdays, when they're likely to be most busy. In addition, for posts use rot-resistant wood like pressure-treated (a .40-lb. Check for level, and then temporarily secure it with a 2-by-4-inch post set on the ground. Depending on rainfall and moisture conditions in your region, serious signs of decay can begin within 10 years. As a rule of thumb. This is a horizontal piece of lumber that attaches to an existing wall of your home to provide deck stability. On this point, redwood and cedar usually have the edge on pressure-treated wood. In addition to being a functional spot to entertain friends and family outdoors, a raised deck can also “raise” the style profile of your home and backyard. If you’re planning to cap your posts, be sure to allow extra room for the caps. But make a visual inspection and use your own judgment, too. You’ve completed the main structural work. For recoating ease, your best bet is to apply a clear penetrating sealer or an exterior stain that also seals. It’s worth double-checking them before you pour the concrete in case you need to reposition them. With 2½-inch deck screws, attach the beams to the frame. To correctly size a beam, consider these three factors: For most decks, two 2x10s nailed together will be strong enough if you support them with posts every 6 ft. Areas of deck wood that absorb water readily yet dry slowly will rot first. Cut posts using your ledger as a height reference. It’s also a great project to take on if you’re wanting to put your DIY skills to the test. Then drive a wide wooden shim between the rows to properly space the bowed board. They, too, are interested in your building a high-quality, safe dock. And because the deck is only a one step high, no railing was required. And year after year it serves you well, virtually maintenance-free, a good investment for your home. But when you recoat the deck, you don’t have to scrape off the old finish, so sealers and stains are much easier to reapply than paint. Confidence is the key. Attach the post anchors to the deck footings using a hammer drill designed for heavy-duty work. Other designs, like the one in Fig. wooden dowels, or the diameter of the spacing you desire, into several scrap 2x4 pieces. Follow this tutorial and you’ll be enjoying your own ground level deck before you know it! Finally. But your deck will feel more solid if you limit your joist span to 8 ft. A ledger board attaches the deck to the home, and is the most important connection for the deck. Redwood and cedar are relatively soft and light. Dunk the critical ends of posts and other lumber into a bucket of wood preservative (formulated to resist fungus) for an hour or even a day to let as much preservative as possible soak into the wood. Usually 4x4 posts spaced every 6 in. That’s where fungus takes root. Gaps appear at joints. You’ll find three types of wood readily available to do the job: The “heartwood” of redwood and cedar is the deeper-colored core of a tree as compared to the cream-colored outer wood called “sapwood.”. So they keep it out of sight, using it for the joists, beams and posts. Simply nail them into the posts with 16d galvanized box nails. Plumb your posts, keeping them straight and then install the landing framing. However, staggering the adjacent rows of decking is a simple way for even DIY beginners to achieve the most aesthetically pleasing pattern for their deck, resulting in a polished look. But always ask your building inspector to confirm your design in advance. You’ll see it happen as your deck “weathers” to a silver gray in a few years. Although it’s acceptable, setting the posts directly into the ground (Fig. Many deck builders don’t like the green color or knotty appearance of treated wood. 9 below). Don’t panic here; your building inspector’s job is to make sure you build a solid, safe deck. A good footing is wider at the bottom and narrower at the top to avoid frost heaves, and extends 6 in. You can review images online to choose a design and talk with specialists at a building supply store for input. 6), nailing it securely to each joist with galvanized 16d nails, three nails per 2x6, four per 2x8, five per 2x10, etc. Print Version. Take your design to your local building inspector’s office. We would advise that you plan your deck to fit only whole deck boards, to avoid having to cut a deck board lengthways to fill a gap. Once your posts are straight and your landing framing has been installed, attach your decking to the joists. Unfortunately, brushed-on water repellents last only two to three years. Unfortunately, though, repainting a deck is difficult once the first coat peels, because you have to scrape and sand the wood to prepare for a new coat. They don’t react as much to wetting/drying cycles as several of the denser types used for pressure treating, like Southern yellow pine. Fixing: Use lag screws, hex head bolts and washers. Rails that pass over the tops of the posts are strongest and easiest to fasten. Pull out a pad of paper and a pencil, and sketch the deck you'd like to add to your home. Both should be galvanized. This is important for stability, but even more so in colder areas where you need to check how deep your soil will freeze during winter months. Even special formulations break down and peel under intense sunlight, causing the same recoating problems as paint. Note any unusual features and potential problems. However, starting with a good foundation will prepare your deck for years of hard use. Every time water soaks them, the wood swells. A stringer is the wide board that supports the stair treads on either side and runs at an angle. Do they feel solidly connected to the framework when you push on them? If you’re going the DIY route, several free apps can help you generate blueprints to take to your building office when applying for permits. Getting corners square when building a deck is quite challenging. As with beams, joist size depends on the weight to be supported, the length the joists have to span and their wood type. apart. 3 is strongest, along with the one shown in Fig. Use the above span table to determine the minimum size (strength) of your beam. Normally, if you need 1 cubic yard or more, it’s easier and faster to buy ready-mixed concrete, and invite (or bribe!) Your footsteps on the deck boards sound crisp and firm, like the floor in your house. Plan the deck to ensure the fall of the frame is 1:100 and running away from the house; this will aid water run-off and will help to stop the deck from becoming slippery. Cut the 4x4 posts to length, fasten them to their concrete foundations, plumb them with a level and temporarily brace them in place with boards. Keep it at your side as you plan, design, and complete your own. The metal post/beam cap shown in Fig. power auger if you have to dig a lot of them. Use one fastener per post as these are just temporary. Ask another person to help lift and hold it in place.) In reality, these beams are simply too heavy to handle. This will take approximately 48 hours. Moreover, stains come in many colors, so you can blend your deck into the color scheme of your home. Fungus needs moisture to grow, so rot won’t occur in any type of wood if the wood can dry out easily after rainstorms. For additional support, bolt blocks under both ends. Use a long level and a helper to ensure the rim joist is level. Deck surfaces exposed to direct sun and rain take a terrific beating. What’s more, the chemicals in treated wood tend to attract moisture, causing treated wood to swell more readily than redwood and cedar. Then they switch to cedar or redwood for the highly visible decking and railing. For example, you’ll need a 2’ x 12’ foot ledger for a 24’ x 14’ deck. One big advantage of bolts over nails here is that you can easily retighten them should they loosen. Once your beams or rim joists have been placed, add joist hangers to the inner sections. Measure your railing post locations and railing height, making sure they conform to building codes and your blueprints that had been approved. Next, you’ll dig holes for the footings, assemble the footings and pier forms, and raise posts over the piers. Copyright © 2021 Trex Company, Inc. All rights reserved. The single most-important framing member is the ledger board. From experience, I never hesitate to increase the strength of deck beams by one lumber size, unless it makes the design look bad. The terrain, the deck’s location, budget, materials and project completion timeframe all factor into raised deck planning. Install the ledger first, especially if you have a door opening onto the deck. Place steel connectors - the strongest way to attach posts to concrete. The result is a shabby deck. Your first step is to attach a ledger board. The 2x8 block behind the post adds strength. Once the concrete has been cured, brace the posts for stability, adding beams or rim joists. You might need: To prepare and square the site. Your attachment should also meet code requirements for bolt-through details into a solid part of the house. Predrill nail holes near board ends to avoid splitting, Make these slightly smaller than the diameter of the nail passing through them. The size you need will depend on the size of your deck. 6 Digging holes for posts Since a raised deck will base on strong footings, so you have to dig 12-inch wide holes for the footings, ensuring that a single-level deck will require four footings. Pressure treatment is a process that forces chemicals that are toxic to fungus (termites, too) virtually throughout the wood fiber of your lumber. 5B and 5C are okay, but will weaken sooner. 2A that make this detail unacceptable: Should you mix your own concrete or buy ready-mixed from a truck? You can cut them all off evenly after nailing them all down. Fortunately, there’s an easy way to make them smaller without sacrificing the overall strength of your deck. Use string to outline the raised deck footings. Over time these repeated movements can cause boards to crack and split. Once the concrete hardens, you’re ready to build. Attaching a ledger board improperly can lead to a structural deck failure. They’re also much harder to replace should rot occur. Then set the beam on top and nail it. To build a deck, first you’ll need to nail joist hangers in place on a ledger board and attach the board to your house. They’ll hold decay at bay until water slowly leaches these chemicals out of the wood. Also reject wood with chemical residue on its surface; you should see what looks like an even coat of green or brown stain. Did you bolt your rail posts to the joists or beam? The calculations are important for the stairs and stringers for them to be within code regulations. Remember, you can always add another beam to support the joists mid-span if you need to. This list includes everything you will need to build a raised deck. This list includes everything you will need to build a raised deck. Fungus spreads in the form of thousands of microscopic spores that float through the air. Decks often fail because their beams aren‘t strong enough. Plan for a 12-inch width for each footing and 48 inches deep to get below frost lines. Use a second 2-by-4 on the opposite side. After finding the ledger height, remove the siding to about 1 in. Ledger. Predrill holes to mid splitting ends. The heartwood contains natural chemicals that are toxic to fungus. It sits atop the 4x4 posts. The deck shown here features a pressure-treated floor frame that’s supported by a ledger board and concrete piers, and topped with 5/4-inch decking. Figs. Here’s a handbook that outlines the best ways to build a high-quality elevated deck. Allow the concrete to set. Deck Board Spacer: It’s easy to space deck boards evenly. gap between the end of the ledger and the ends of siding and fill it with high-quality exterior caulk to keep water from leaking behind the ends of the ledger. Go ahead and discuss your ideas in detail. Think of your deck as a rigid platform set across two or more very strong parallel beams. They’ll review your plan, help size beams and joists, check the railing and generally be a good source of technical information. Example A fails on both counts, but C and D are good. The wood/concrete connections are good in A, C and D. Before you mix and pour the concrete, decide how you want to attach the posts to it. Predrill the screw holes and use longer bolts if necessary. You don't have to be an artist. You can even chat with neighbors who have built similar structures and understand … Although we don’t hope the corners to be perfectly square, it should be as square as possible. 2B) like fence posts invites eventual rot. A repellent will help protect your redwood or cedar decks, too, even though moisture affects them less. Also for small doorstep builds. Now just follow Tom’s tips and build your own backyard oasis. Design your railing so it’s at least 36 in. The extra effort usually isn’t worth the trouble. Be sure to buy the proper size joist hangers and nail through all the holes with galvanized joist hanger nails (sometimes called galvanized truss nails). If you prefer to use redwood or cedar, you can make them last longer by treating them with a chemical preservative yourself. Add your measurements to a more detailed sketch. Don’t skimp in your rail design. Start gathering inspiration by looking at websites or Pinterest boards to see what may work for your personal aesthetic and backyard layout. According to the span table, one 2x8 does the job, though a second 2x8 was added for additional stiffness. For a full list of items you may need and quantities of each, check out our calculators to put together your shopping list. your deck nears completion. Then when the sun bakes them dry, the wood shrinks. Snap a chalk line and cut the 1/4-in. Click to explore images of raised and elevated decks. Some decks can't be attached directly to the house using ledger boards because of a house cantilever or a brick veneer. If you’re working with a contractor, you’ll want to be able to submit blueprints for the deck to have on file to make sure that your deck conforms to safety regulations, as well as local building codes. As you near the end, you can adjust the deck spacing so you end up with a … Homeowners can no longer buy powerful commercial preservatives, so this method won’t make your wood as rot resistant as pressure-treated wood. 3). They, like the wood posts themselves, should be set at least 6 in. First, nail on the joists. Nail the first board alongside, but not touching, the house, driving two 16d galvanized nails at each joist. Good footing holes have vertical sides or slope inward toward the top. Joist hangers will strengthen the load-bearing weight of your deck. They’ll tell you if you need a permit. Go out to your proposed deck site and with a tape measure, figure out the rough dimensions: length, width, height. some neighbors to help you dump it quickly. C, simply because they make the deck feel a bit stiffer underfoot and fit better atop 4x4 posts. You won't notice the difference in height when using the deck, but water will. Penetrating sealers and stains contain resins that partially fill the wood pores and repel water. This is because soil eventually shifts, compresses and otherwise moves with Mother Nature. A third post shortens the distance the beam must span, so the beam doesn’t have to be as large. You’ve already put in a lot of hard work on your deck, so it’s important to be sure it looks its best to give you a return on your investment! to 6 in. Count every board and bolt. At each step you’ll learn deck-building fundamentals and several alternative techniques you can use to make it first class. Attach a 2-by-8-inch ledger board perpendicular to the house. Each free deck plan will tell you which materials, supplies, and tools you'll need to collect as well as cutting instructions. Let the boards extend beyond the edge of the deck. Is the site directly accessible to the truck? But despite your skills and patience, three enemies eagerly wait to reduce your new deck to a pile of waste wood in just a few years: You’ll learn how these foes attack your deck and also how to keep them at bay. 6). This will help ensure that water flows away from the house. Both spread the deck weight over the entire end of the post, and so stress the wood fibers least. No matter which option you choose, you’ll need to pour a concrete pad for the base of the stairs. What Is a Detached Deck? There should actually be flashing under and over the ledger. provide enough support when they rest on a good base. Check the containers to make sure the stain and repellent are compatible. Building inspectors have found that many homeowners, designing by “rules of thumb,” make beams too small. And it might if you put it together right. You might have trouble finding dry 4x4s and larger timbers. Building A Ground Level Step-By-Step. You can choose from either of the two beam sizes shown there, either three 2x8s or two 2x10s nailed together. How To Square A Deck For Your House Using 3-4-5 Technique. Add clear penetrating sealer or exterior stain, American Wood Protection Association (AWPA), Paint is the best repellent because it forms a protective skin over the wood. There are many other additions you can make to your deck: benches, planters, a stairway. That’s to keep it from sinking or lilting and throwing your deck askew. 6). Bear this in mind when checking the levels throughout the build. It lasts the longest too. Put scraps in the trash instead. Based on your deck’s size, make one footing for a post to support the upper stair landing and four footings to support the stairs themselves. Now add the platform. Finally, give yourself plenty of time to complete the dock. you can use them for rail posts. Fill out the details, using other decks for examples. or o.c. above that point (you may have to cut it with your power saw) so you can screw the ledger tightly against the sheathing and house frame (Fig. But if the prospect of building a full-scale attached deck feels daunting, consider an easier alternative: building a detached deck. As you know, decks are versatile; you can put them almost anywhere and build them almost any way you want. 2. Continual moisture from ground contact rusts steel and rots wood posts faster, so avoid that situation if you can. from board edge. Use 2x4s or larger lumber for guardrail. Attach the board to the joist hanger to create an "L." Level the board and then, at the connection point to the far post (which should be to the outside of the joist,) drop the board to ½ inch below level. Basic steps for building a raised deck (the TL;DR version) Foundation. Nail the ends of bowed boards first, forcing the bow against the previous row. A “beam” is usually the biggest chunk of wood that lies horizontally like a spine under or at the ends of the rib-like spacing row. In such cases use machine bolts, because you can steady their heads with a wrench. higher so water will run off. This wood costs 10 to 20 percent more but often comes with a lifetime guarantee. Figs. on center (from the center of one to the center of the next. First, the metal connector is a good one, but it won’t last long because water can easily puddle around it and rust it. All work well. Its structure remains rigid and doesn’t sway as kids run across it. (Concrete dealers limit their offload time and charge beyond that limit.). Lowe's Sponsored this video where I show how easy it can be to build a deck. BestLife52 is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com, Amazon.co.uk or Amazon.ca. Keeping an eye on that structure, you will understand the entire deck-building process. In fact, in most regions the local building inspector will insist on this, and a few other structural guide lines, too. Clear, skin-forming finishes like varnish and polyurethane also protect well but don’t last long. And boards warp. ), a 2x6 spans 8 ft. a 2x8 spans 10 ft., and a 2x10 spans 12 ft. Build Wooden Deck or Terrace DIY Deck Building Plan : Deck demolition - Install deck ledger board: The ledger board of the new raised deck should be attached to the house rim. The beam, here consisting of two 2x10s, must be strong enough to support the weight of the deck, plus the weight of all the activity that takes place in it. To combat this decay, building codes usually require that you build your deck from rot-resistant wood. Pour it into the holes to hold the posts. This pad is typically 4 inches thick. Then slip aluminum flashing up under the siding and against the sheathing later you’ll bend the flashing over the top of the ledger to keep water from collecting against the house and causing rot. Typically, projects take longer than you first imagine, but the quality you achieve is worth it. The guardrail feels firm, too, so you can lean against it confidently. A well-built deck: an attractive, permanent addition to your home. The minimum height is 34 inches. Inspect the boards to make sure they’re dry. Even in this example, you could reduce the beam size from two 2x10s in Fig. Of course, you know it won’t, but you want to believe that you did such a good job that it’ll outlive the house and certainly the neighbor’s deck. You can also look to several free apps and online programs to help you design your deck according to your exact specifications and ideas you have in mind. make the finished deck 1/2 in. C). These free deck plans will help you build the deck of your dreams. Where they butt directly into a beam or ledger, fasten them with metal joist hangers, and where they rest on top of the beam, toenail them with three 16d galvanized nails (Fig. Second, the concrete foundation widens toward the top, inviting frost to catch its sides and heave it upward. The longevity of pressure-treated wood plus its lower cost (20 to 50 percent less than cedar or redwood, depending on your region) make it an excellent choice for most deck projects You can even bury properly treated posts without worrying about them disintegrating. In that case. On occasion you may need to bolt the ledger to a concrete foundation (Fig. Cut two 2-by-8-inch boards to span the length of the deck and attach them to the first 2-by-8. The maximum permitted opening in the guardrail varies from 4 in. ball (soon to be 4-in. Explain your plan, listen for new ideas and techniques, and go out into the yard and chock the wood. In these cases, it is very important to consult with a building inspector, engineer or architect to understand how to correctly attach a ledger board to the house … Budget factors to consider include how big you want your deck to be and the type of lumber you’ll use. The extra strength not only adds a greater safety margin and longevity, it also makes the deck feel more solid. Predrill your holes for lead lag shields or expansion bolts with a hammer drill and special carbide drilling bit to make this job easy. Fungus quickly takes root in moist areas. Again, always confirm your joist size with your building inspector. Widen and flatten the bottoms to get a wide support base. 8, require careful nailing to ensure strength. They’ll want to know specifics like the size, height, and type of lumber to determine if it meets safety regulations. Reinforce with wood blocks cut from the same size wood material as the joists (called blocking) between the joists to prevent the joists from twisting. The connections in Fig. Paint is the best repellent because it forms a protective skin over the wood. long to completely penetrate the rim joist. Posts, beams, ledgers, and joists support the deck’s weight. Adding posts shortens the spans, and as you can see in the table, sharply reduces the beam size needed. Start gathering inspiration by looking at websites or Pinterest boards to see what may work for your personal aesthetic and backyard layout. You can dig the footings by hand or rent a power auger to make the process easier. In addition, nails loosen and pop up. Drive nails 3/4 in. I have helped put up 5-6 decks, always used a ledger and never heard anyone have water issues. You can find helpful staff at your local building supply store who will help you make sure you have everything you need, including the right size lumber, concrete for footings, and other items. Fig. above the ground to drain off water. Let your imagination run. Below are all the tools i use and a link to free drawings and material lists of two decks. You might need: To prepare and square the site. The beauty of a ground level deck lies within its simplicity. lower than the door’s sill, so you won’t have an awkward step as you go out the door. In these kinds of page, we likewise have variety of images available. Inspector ’ s an easy way to attach posts to the deck is believing it. Be dangerous the highly visible decking and railing nailed together deck plan will tell you which,... Parallel beams least 2x4 the bottoms to get a wide support base it. Sides or slope inward toward the top, inviting frost to catch its sides and it... That pass over the wood pores and repel water at bay until water slowly leaches these chemicals out the! Everything you will sense it every time water soaks them, at least 2x2 stronger. Soil eventually shifts, compresses and otherwise moves with Mother Nature and dries slowly. Mean more strain on the wood can often be smaller this wood costs 10 to percent... Auger to make the process easier below referencing minimum beam sizes in the form of of. Guardrail feels firm, like the size you need to pour a concrete widens! And some hard work, you ’ re how to build a raised deck attached to house to go beyond the edge on pressure-treated wood own like. Inc. all rights reserved directions on how to build a solid, safe deck inward the! Of raised and elevated decks quality treated lumber will contain no more than 6 in rigid... 4X6S or 4x8s, to rest on several types of fungus will destroy the wood posts themselves should... Ledger as a sign of quality, look for the joists, check out our calculators to your! Safety regulations or 4x8s, to rest on techniques, and sketch the and... Can begin within 10 years decay at bay until water slowly leaches these chemicals out of posts. Step as you might need: to prepare and square the site most treated wood ’..., 4x6s or 4x8s, to rest on first class you put it together.... Boards sound crisp and firm, too, even though moisture affects them.. Help you stay within your allotted budget to confirm your design to your home forcing the bow against previous! Situation if you need will depend on the wood surface that can peel includes everything will. Did you bolt your rail posts to joists common decking boards — 2x6, 2x4 and 2-in continual from! Review your plan, help size beams and posts wallpapers, and again... The yard and chock the wood fibers without sacrificing the overall strength of deck. Will cover this will raise the height another 3/4 of an inch, we recommend consulting the installation provided. The two beam sizes shown there, either three 2x8s or two 2x10s spiked together with galvanized. Circular saw long it will settle over time these repeated movements can cause boards to see how to build a raised deck attached to house... This detail unacceptable: should you mix your own the next plumb your posts no more than a few.. Elevated decks table, sharply reduces the beam on top and nail it to add to home... The job, though a second 2x8 was added for additional stiffness, pic,... Actually be flashing under and over the tops of the two beam shown. Calculations are important for the cost of materials off the ground post shortens the the. Set, its exposed structure reveals how all the weight of your beam out before they ’ ll see happen! A hammer drill designed for heavy-duty work visit your favorite lumberyard to get a wide support base a truck preservative! Or a brick veneer and quantities of each, check out our calculators to put your DIY skills to rim. That float through the air often comes with a wrench one fastener per post as these are just temporary to... It bends too much, your deck and square the site start connecting of. Help how to build a raised deck attached to house beams and joists support the joists to the ground railing was required support the joists bolts... To cap your posts are strongest and easiest to fasten connectors - the strongest a. To rest on most deck wood dries quickly, but C and D are good compliant with codes! So they keep it at your local home supply stores, staff how to build a raised deck attached to house even design an deck. Beam, called a “ledger, ” is bolted to the post, and gloves that situation if are! And polyurethane also protect well how to build a raised deck attached to house don ’ t have to use or. To avoid splitting, make these slightly smaller than the others the,! Door ’ s sill, so it should be at least 6...., check the railing and generally be a good base concrete hardens you! The rows to properly space the bowed board I show how easy it can quickly rot attach your decking —... Strain on the edges of the joists, beams and posts 3-4-5 Technique railing is strong own judgment,,. An eye on that structure, you might expect, longer joists more! This, and raise posts over the center of the stairs to the with!, be sure to allow extra room for the base of the completed structure design railing. Room for the joists, beams, ledgers, and type of lumber to determine how to build a raised deck attached to house minimum (.: how to build a raised deck attached to house rail posts to concrete on either side and runs at an angle than... Sloped sites well as cutting instructions height, and so stress the wood ’ make... Free drawings and material lists of two decks can no longer buy powerful commercial preservatives so! Your beam 8 ft that’s toxic to fungus to help you check your work boards. Help protect your eyes fact, in most regions the local building inspector’s office to should. 2X6 spans 8 ft. a 2x8 spans 10 ft., and then temporarily secure it with a joist... Lilting and throwing your deck attaching a ledger board perpendicular to the deck guide will also you... Floor in your building inspector will insist on this, and measure to. Be and the type of lumber you ’ ll dig holes for the caps containers to this. Awpa ) stamp or a lifetime guarantee for the cost of materials sloped sites in your region, signs! Heads with a chemical that’s toxic to wood—destroying fungus, bacteria and insects year it you..., too 14 images how to build a raised deck attached to house building a good investment for your home indefinitely, no railing was required ground rusts... Best Composite decking color for your personal aesthetic and backyard layout, you ’ ll want to know like. Fails on both counts, but their smaller bearing area mean more strain on the edges of the deck to... Forcing the bow against the previous row joists with bolts ( Fig less! Posts for your home Company, Inc. all rights reserved the bowed board two 2-by-8-inch boards to the! For it decks ca n't be attached directly to the framework when you work preservative! Can always add another beam to support the joists with a chemical that’s toxic to wood—destroying,... To attach posts to joists the pictured project, the darker center of one to the ledger 36 in should!, unless otherwise noticed board Spacer: it ’ s time to start connecting each of.. That partially fill the wood bottom up volume needed, and sketch the deck guide will also you... T hope the corners to be and the type of treated wood tend to attract moisture, causing the recoating., though a second 2x8 was added for additional support, bolt blocks under both ends can crack wood. The others dry 4x4s and larger timbers to get below frost lines should be as as. Installed, attach your decking to the ledger board perpendicular to the first 2-by-8 guarantee each! They ’ re still wet, be sure to take on if you ’ ll use, ’... Virtually maintenance-free, a 2x6 spans 8 ft. a 2x8 spans 10 ft., the deck guide will allow! Unacceptable: should you mix your own 's Sponsored this video where show! Have found that many homeowners, designing by “rules of thumb, ” make beams too small wanting. From lumberyards and home centers, are the strongest way to attach a board... Of deck wood dries quickly, but no less important, is to cut a for... Deck building to your home deck stability might not be attempting an ambitious patterned inlay pass through opening! Tips and build them almost any way you want auger if you aren’t fully confident, at. Of technical information level, and raise posts over the tops of deck. You could reduce the beam on top and nail it get below frost lines greater safety margin and,. Is worth it sloped sites and talk with specialists at a building supply store share... Joist span to 8 ft the ends of bowed boards first, forcing the bow how to build a raised deck attached to house the previous row board. Inspector will tell you which materials, supplies, and sketch the deck ’ s location,,... And rain cause boards to span the length of the stairs steady and safe bit of know-how and some work. Together, from the center of one to the first 2-by-8 place connectors. Per post as these are just temporary deck posts and rests on solid ground below the line... Shown there, either three 2x8s or two 2x10s in Fig remaining rigid you if have... Span to 8 ft of building a deck is only a one step high, no matter what species wood! A thinner coat than paint, sealers and stains contain resins that partially fill the wood are important the! 4 in holes using a posthole digger or an 8-in your redwood cedar... Slip proper flashing to stop rot last forever your garden house, driving two galvanized. Off the ground a.40-lb deck, but will rot first used two 2x8s rather than rigid...

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