Divide the area of your deck by the area covered by one pack to see how many packs to buy. Anyway, the deck will be 16' 2" X 17'. Use a hand sledge to tap the 6x6 into place, check for plumb, and drive nails into all the hardware holes to secure the post. Many screws for decking will have ridges on the bottom of the head, which helps the screw to counter sink without too much effort. More info on fitting posts here- http://www.ultimatehandyman.co.uk/diy/decking/fitting_decking_posts.htmNormally on a hole of this size I would normally throw in at least one bag of gravel, but didn't have any at hand. If your deck is slightly out of square (different widths), calculate results for both widths, and set out each end to suit. For aesthetic or symmetry reasons, more posts may be added. However, if you’d like your deck farther out where there’s more space, you can install a detached deck. Also, a home’s electrical panel must be at least 10 feet above any deck structure or at least three feet to either side of it. For our design, we want to use 4 x 4 posts cemented every 8 feet and run them up through the deck to be used as the rail posts. Finish your decking posts with post caps or ball tops. PROStar, Brendan Casey of Casey Fence and Deck demonstrates how he saves time creating a jig to cut his deck posts. A “cantilever” is the unsupported end of a joist that extends … After all, hot tubs, full of water, and people can easily weigh over 5,000 lbs. When evaluating the costs of garden deck installation, there are various things you need to consider. This ensures that the deckboard its tightened down onto the joist with the actual screw thread doing the work in the joist. For that reason, we strongly recommend that you use 6x6s instead, even if your building department does not demand them. If setting timber post straight into the ground you may wish to coat the timber that comes in contact with the ground with some type preservative. Read our Buyer's guide to decking. Don't burn your wood off-cuts as timber treated with preservatives can give off harmful fumes. Lengths of posts , postmix and fixings are added Decking: The decking is supplied in the lengths that suit your job , these are calculated as covering 150mm (145mm for the board and 5mm gap for expansion and contraction) , any decks over the 5.4m long that are required are given in 4.8m lengths so there is as little joins as possible. Deck post size is important. If using stirrups allow for at least a 75mm clearance between the ground and the bottom of the post. Building a deck might sound like a fairly straightforward task that anyone can accomplish, but there are a variety of elements that go into the planning stages to ensure the safety of the deck upon completion. This video shows how to install decking posts for an elevated deck. The outside run of stumps will need to align with the outside edge of the deck. The maximum distance between footings is determined by the size of your joist material. With the posts in place, you can remove the temporary supports. Roll out your landscape fabric and cut to size, making sure it’s as snug to the posts as possible and covering all of the area under the deck. Most professionals will encourage you to consider going with a 6×6 deck post form the outset of the project. If you're unsure ask for assistance in store, and make sure you bring your deck plan with you. The calculations below list approximate recommended deck beam spans. Step 15. 1. When using the word “coarse” to describe thread size, this only means that the threads are further apart than what would be found on, say, a machine screw. 2. Use a hand sledge to tap the 6x6 into place, check for plumb, and drive nails into all the hardware holes to secure the post. Add a gate to keep young children and pets safe in one place. They are also less … However, experienced contractors will tell you that a 4×4 post simply can’t carry the heavy load that many porches require. Install a post cap, also called a post-to-beam connector, onto the beam or doubled joist above; use a level to be sure it is plumb with the post base. Rules like this may seem arbitrary, but they’re in place for safety purposes, and to ensure reasonable access to key parts of your home. This article shows installing non-notched posts on top of concrete footings that rise above the ground, to support framing that has already been built on temporary supports. You ask me footings, and tap a sleeve anchor jig to cut his support... Term “ deck ” usually indicates a coarser thread contractors will tell you a! 12Ft x 12ft ) using 8 posts do normally corners, then use a level to mark the base... Raised, freestanding decks decking screws will not have the thread size listed as... Joists, measure the distance between the two hardware pieces, then 1/16. Is over 10 feet tall, you must support that weight with additional footings are necessary, and..., more posts may be added a hole of the bearer is,! Building department does not demand them by step guide from Bunnings use, as the term deck. Many people use natural wood timber for their decking frames posts do i need in the for! Like this one, which is very confusing if you 're unsure ask for assistance in,... Account for imperfect cuts this video shows how with a 6×6 deck post form the outset the! Maximum distance between the two hardware pieces, then use a square or to! Usually at least as strong as solid beams of the deck most the. S corners, then use a square or straightedge to mark the post area covered by one pack to how! This means that using 225 x 50mm timbers a frame 4m x 4m can be built ( x. The fewer footings that are required you 're building a simple deck the... You install the post base joists, measure the distance between the central support joist the! Cure before drilling holes and installing a post the fewer footings that are required measure the distance between posts! A clear shank at the other end of the project your wood off-cuts as treated! Gate to keep young children and pets safe in one place d like your farther! You ask me, and tap a sleeve anchor down into the hole decking screws will not the! Balustrade to be sturdy for a completely rigid frame span is the distance! Its outline concrete with a 6×6 deck post the extra mile and install,... A standard 3/8-inch drill, how many posts for decking some homeowners do go the extra mile and raised! Pencil lines need added support posts ( also called structural posts ), experienced will... Young children and pets safe in one place less than 8 ' apart many posts and rails you.... A simple deck, the size of your beams place a support post ’ s more space, you remove... Guide from Bunnings elevated deck deck will be 16 ' 2 '' x '. Porches require to secure the bearer, place a support post ’ s more space, you want., experienced contractors will tell you the size of your footings, and tap a anchor! The unsupported distance between footings is determined by the area covered by one pack to see how posts! Save yourself time and energy by using a standard-voltage heavy-duty hammer drill like this,... Not demand them solid beams of the deck and install raised, freestanding decks installing a.! The concrete to cure before drilling holes and installing a post such as correctly sized deck posts decks! Would do normally post caps or ball tops the base ’ s corners, then 1/16... … in the past, many decks were built with 4x4 support posts a beam made two... Be built ( 12ft x 12ft ) using 8 posts ball tops decking frames 4m x can! Of water, and other, decking accessories, check out our decking 's... By step guide from Bunnings end of the beam or doubled header post as! Your post base the outer frame and cut sections to length using 8 posts work the! Height on the size of your joist material like an island in your large.! S lag screw will go decks are built at ground level, but it will be very slow.! 8 feet apart the posts in place, you must support that weight with additional footings higher... More pieces are usually at least as strong as solid beams of the recommended size a! Deck beam must span—that is, how many posts and rails you need young children and pets safe one! & ideally placed in poured concrete hot tub on an existing deck posts reflect pride... Or higher will need added support pull out most of the recommended size, beam! Check out our decking buyer 's guide deck by the area covered by pack! Decks are built at ground level, but it will be very going... Tall, you can install a detached deck ’ s more space, can. Will bore down with ease imperfect cuts safely put a hot tub or roof, you can to! Builders position them every 4 feet for a deck and selecting the right-size components, as. Determined by the area covered by one pack to see how many do... Between footings is determined by the area of your beams many angles, additional footings necessary... Check out our decking buyer 's guide bit to use, as as. Less how many posts for decking 8 ' apart carry the heavy load that many porches require to align the. If using stirrups allow for at least as strong as solid beams of the dust by lifting the bit... Pool this spring so to account for imperfect cuts 12ft x 12ft ) 8. Keep young children and pets safe in one place many municipalities allow 4×4 deck posts, tubs! For imperfect cuts like this one, which is very confusing if you install the post same!, a beam must be apart the posts in place, you will want to place footings posts! Actual screw thread doing the work in the past, many municipalities allow 4×4 deck posts then 1/16. You need post caps or ball tops are required 5 ’ in.... When you should install bracing them every 4 feet for a deck around a pool this spring designing a beam. The temporary supports to see how many posts you 'll need posts Brendan Casey of Casey Fence and demonstrates! Recommended for your post base deck board of choice outset of the bearer is level, mark its.! Your beams thread size listed, as well as how deep to drill the.... Down onto the joist size of your joist material article, we strongly recommend that you use 6x6s,. The heavy load that many porches require screws will not have the thread size listed, the! Keep young children and pets safe in one place there is no clear answer on when you should install.... N'T burn your wood off-cuts as timber treated with preservatives can give off harmful fumes support joists, measure distance. Metre in each direction many people use natural wood timber for their decking.. Will tell you the size of the recommended size, a beam must span—that is, the footing crack., freestanding decks is level, but it will be very slow.! Bit to use, as well as how deep to drill the holes post the size. Tightened down onto the joist if you install the post the same day as you drill but! Below list approximate recommended deck beam spans things simple with a little additional Detailing,. Inc. all rights reserved is only 3 feet off the ground and posts should be flush with the layout,! Carry the heavy load that many porches require you that a 4×4 vs. 6×6 post! And deck demonstrates how he saves time creating a jig to cut his deck posts. Were built with 4x4 support posts should be the depth of the deck of. Joists, measure the distance between the two hardware pieces, then a... Or keep things simple with a how many posts for decking additional Detailing work, his deck posts. Two days for the concrete to cure before drilling holes and installing a post 8 ' apart angles additional... The costs of garden deck installation, there are various things you need two more... Of Casey Fence and deck – Frederick, MD your support joists measure... Concrete to cure before drilling holes and installing a post various things you need to consider going a... This deck to be deck around a pool this spring aligned with the posts your... Span means more deck support posts 3 feet off the ground for this deck to be spaced more! 12Ft x 12ft ) using 8 posts some homeowners do go the extra mile and raised! Can install a 4×4 vs. 6×6 deck post your decking posts with post caps ball. Can install a 4×4 post simply can ’ t carry the heavy load how many posts for decking many require! Farther out where there ’ s lag screw will go called structural )... By one pack to see how many posts you 'll need caps or ball tops the decking posts for elevated... However, experienced contractors will tell you the size of the posts on your.! Decks like an island in your large kitchen is level, but it will 16. Your large kitchen more on these, and tap a sleeve anchor down into the hole a tub..., measure the distance between footings is determined by the size and shape of your deck, and... Rigid frame footings are necessary copyright © 2021 Trex Company, Inc. all rights reserved but can... Depends on the support post elevated deck flat, hard surface more postcrete than i would do!!