deck flashing detail

Grind out the grout along a row of bricks. PD-13. Here you will find all of the EPDM specifications, 3-part specs, details and installation guides. The deck flashing detail for decks in the DCA 6. Never know who might try and rip that out if they happen to come across it. Neither of these are required by code, but that doesn't mean they're not a good idea. Ken – T1-11 is definitely a pain when it comes to adding a deck after the fact. I had windows replaced on the house last summer, and did some wood rot repair and found there was no wrap on the house on the front bay window! Not to mention, last spring we had to repair water damage in our living room due to the absence of FLASHING around the fireplace. Todd I live in Southern Alberta. A critical component of step flashings along the run of the roof slope is a kick-out flashing. They are both masonary materials. Another detail from EPA eliminates metal flashing, using just self-adhered membrane. In this case the siding and sheathing are the same thing. Should I flash from the outer surface of the foam board, or go behind it to the sheathing? The house was just completed in Sept. of ’99. The hangers shouldn’t be attached directly to the house, mostly due to the fact that there’s not good way to flash the connection. Usually you’d cut the T-111 an inch or so above where the final roofing would go. I thinking of using Hardyboard or some synthetic decking, cut in small pieces, as spacers. Which method is stronger? Either method will work fine when installed properly. I’m glad to help out. It came out great and your guidance on dealing with the siding was very helpful. It also creates a pocket for debris. Kevin – You’re not far off. Stay on topic. Help! I assume even on a covered porch, that flashing is a good idea- especially before the decking is installed? You really need to cut back the sheathing, install the rim joist, and install proper flashing. Home Construction & Improvement™ is a Trademark of Front Steps Media, LLC. With the highest number being zero (Gold) copper comes in at -0.35, Stainless steel, a high quality (and expensive) flashing option, is close by at -0.55, Hot-dipped zinc plated galvanized fasteners come in toward the bottom, at -1.20, Flashing must be installed like shingles — flashing relies on physics to do its job properly, Flashing must do its job and keep water out of the building cavity. My question is, should there be flashing, and how do we install it? To do that you would have to “pad” out the webs on the I joists and install the blocking/diaphragm with an approved connection that will transfer the load from the ledger into the blocking and into the floor system. • Attachment Position Details Wall Conditions • Flashings and Coping Details at Walls Edge Conditions • Flashings and Fascia Details at Edges Penetrations • Roof Penetration Flashing Details Forti-Lock™ Liquid Flashing • Liquid Applied PMMA Flashing System Details Expansion Joints and Tie Ins • Joint Detail Drawings Miscellaneous In fact, it ranks higher than cedar which many people use in direct contact with the ground. Stick with the guy who understands the flashing and rim joist issue. If the rotted is not removed will the band board continue to rot? Should he have replaced the rim or sill plate where it was rotten? Trust me, I’m not looking for problems with the DCA 6 Prescriptive Residential Wood Deck Construction Guide. I did see the sketch. How much of the thickness needs to be rotted through to warrent replacing a section? Structurally it’s not a great detail either. There are at least a couple of good references for designing deck ledgers. Typical footing at this depth for a 6X6 post should be 12″ deep, 24X24 but once that is poured with steel reinforcement in it, you need to have rebar to attach to a pour that should go from the footing to 8″ above grade with an anchor bolt embedded in top of pour, this should be twice the cross section of your post, so 12X12 pour. Spring is the perfect time to plan these projects…, New DEWALT Job Site Table Saws Models DWE7480, DWE7490X, and DWE7491RS DEWALT recently introduced a new line of portable table saws that include significant updates and features. Whatever material is used, all pans should have a dam on the ends and along the inside edge. The strength comes from the connections so both methods can achieve similar results if installed properly. open deck detail flashing under siding & over ledger open decking joists kerf for ~---drainage '-----1ag bolt \-----iledger samples from www.autocaddetails.net. Here’s the deal. MACoat - Railing Sidemount PDF DWG. Three rules for Flashing (intent and purpose) Flashing must not corrode; Flashing must be installed like shingles — flashing relies on physics to do its job properly; Flashing must do its job and keep water out of the building cavity YOu should be able to support all along it enough so that you can remove and replace without really lifting the house. 2. I would install spacer blocks that are the width of a brick and flash just the spacer block. A copy of this document must be on the job site and available during each required inspection. Flashing at brick is the same as step flashing for a chimney. The first (bottom) layer is a masonite siding, covered over by a Hardy Board Cement siding. PD-13. Galvanized steel would be the easiest to get, but the size wouldn’t be correct, as I would really need to flash over the 2×8 and the layer of 5/8 plywood behind the ledger board. Problem I am having is that water is getting in behind the ledger board and seeping under the band board. Just remember, if water gets into that intersection it’s now going to follow the plane of the drip cap and be pushed out away from the house. We use them all the time and they have become widely popular in the last couple of years. Maybe you're considering having a new deck or fence built. The more interesting, and common, type of corrosion is between two dissimilar metals simultaneously in contact with water. Properly installing a ledger board for your deck is one of the most important structural components of building a safe and strong deck. If things are not detailed in writing, stop all work, and get them in writing. Figure 3-27 - above, pan flashing and threshold details below an entry door . Michelle – Seems very reasonable especially considering they are proposing copper flashing. Necessary cookies are absolutely essential for the website to function properly. The flashing isn’t there to protect the fasteners or ledger. He isn’t here yet for today, so your comments are very timely. On the end that will fit into the mortar... Insert the flashing into the mortar joint so that it fits tightly with the wedge. Jennifer – Do you have any photos? Now is the time to fix it properly. Let me share some thoughts and hopefully this will help. Donna – It’s likely that the cause of the rot now is the missing flashing. Decks must be constructed in strict ... fasteners, hardware, and flashing when in contact with pressure treated lumber; and as a result, fastener and hardware requirements have changed. I noticed you talked about adding blocking then attaching the ledger. Good luck! Is the ledger attaching to the concrete or the house siding? Todd, My prior messages described the so called flashing on my deck and the lack of flashing on the sunroom (both added by the same contractor). These articles will teach you how to install flashing and bolt the ledger connection to the house rim. Shop flashings and a variety of building supplies products online at Lowes.com. Why? I think I remember an article on selecting a good contractor and I followed the steps (interview, references, talking to the building inspector, at least 3 quotes) and I feel betrayed. Lights shall be operated from interior switches, motion detectors or timed switches. Shingle-fashion is a simple-sounding term that makes a lot of sense when you think about shingling a roof. Next mark the location of the bottom of the ledger board and install a small piece of z flashing. The flashing should be wide enough so you can slide the ledger up under it. As far as the corner / end termination it’s hard to say. Julie – The devil is in the details. Also, I have 3/4″ of rigid foam behind my siding. The joists and band board rest solely on the foundation wall. MACoat Concrete Expansion Joint. When I tore the prior deck off the house I found the builder had put the deck ledger and rim joist together and then ran a bead of ?caulk? Find Decks flashings at Lowe's today. Please feel free to contact me if you have any questions, suggestions or you'd like to inquire about advertising on this site. So far it sounds like you’ve got several inexperienced folks posing as carpenters in your area. No, it is a trick of chemistry. Plywood Deck Flashing Detail 1. Search for more articles here. I think you just need to ask him point blank why the framing is the wrong direction? Also, what can be done to overcome an abundance of nails in the existing siding stopping the flashing from being installed? The use of this typical deck detail package in lieu of submitted drawings applies to single span, one level, single-family residential decks only. Would a dremmel work and if so what attachment and or accessories. I hate that I didn’t stay to baby sit this guy. We also use third-party cookies that help us analyze and understand how you use this website. I'm also the Editor-in-Chief and Founder of Tool Box Buzz. Where the back flashing needs to be cut around an obstacle, measure for the notch and cut with tin snips, or slice several passes with a knife. He knew exactly what I was talking about but only had two options. Communication is the key here. When copper is in contact with the galvanized steel, the zinc corrodes. Detail Drawing (DWG) DWG - 713 KB (en) Plywood Deck Flashing Detail 2. It appears the bolts have already damaged the floor joists. Aluminum should not be used in direct contact with lumber treated with preservatives that contain copper such as ACQ, MACoat - Railing Topmount PDF DWG. IRC specifies 'shingle-fashion' and that is a term we hear a lot. I did not have inside access to use bolts, but there are some long lags made specifically for this called LedgerLock. Your expertise is appreciated. I am in Baltimore and footings must be 30″ below grade. May need to bend a custom piece so it’s large enough. Remove that piece of siding. He is using concrete wood (backerboard) for the outside of the house under the windows. I plan on covering the ledger and Azek with vycor tape and spacing 1/2″ from the house with washers. Next another carpenter attached what looks like j channeling along the top of the deck. I’m going to assume that you’ll be cutting out the layers of siding behind the ledger (very difficult to create an effective structural connection if you do not). The second floor joist wrapper is sheating not 2X. Do the joists just run out to the plywood sheathing? It is mandatory to procure user consent prior to running these cookies on your website. I look forward to your response. PD-14. Suggestions? Click on the headings below for more information related to flashing & drip installation and common issues to avoid. Tool Review: 110V Jobsite Board Stretcher, EPA Indoor air and Moisture Control Guidance, SECTION R317 PROTECTION OF WOOD AND WOOD BASED PRODUCTS AGAINST DECAY, Junk Design: Ancient Waterproofing Secrets, How to Install HydroGap SA, a Self-Adhered WRB with Built-In Drainage Gap, Exterior Roof and Wall Insulation Retrofit (Unvented Roof), Building Resilience: Doubling a Spanish Colonial in Minneapolis, MN, Required locations: " ... where exterior porches, decks, or stairs attach to a wall or floor assembly of wood frame construction ...", Required materials: " ... approved corrosion-resistant flashing ...", Required methods: " ... shingle-fashion ... extend to the surface of exterior wall finish", Expectation of performance: " ... prevent entry of water into the wall cavity ...", Self adhered membrane (compliant to AAMA 711), Copper, used in most pressure treated wood, is high on the chart. Once I have a cut into the siding, now what material to use to properly flash? Then I would flash under that and transition back to the T-111. @ Jeff – Are you really serious that there’s no structural rim joist attached the the I-Joists? Is there a way to attach a pdf drawing of the way the logs, rim joist and deck ledger come together? I used galvanized steel, but as extra protection, I cut a strip of ice & water shield and laid it on top of the ledger board before the metal flashing to act as a barrier. Those materials are not ‘structural’. So how do all of these ideas translate into actual deck ledger details? Also could aluminum or another alternate be used instead? When slipping the flashing under the siding, be sure to slide the flashing to the left or right of the ledger by at least 2". open deck detail flashing under siding & over ledger open decking joists kerf for ~---drainage '-----1ag bolt \-----iledger samples from www.autocaddetails.net. Why? Mike – I would cut off the old T-111 (12″ piece you mentioned) then replace with a new piece of sheathing (maybe AdvanTech), install the Z flashing up behind old T-111 and over the new sheathing and ledger. The key here is to cut the stucco up so that there is a space between the bottom of it, and the finished decking, so air can get in there. This eventually allowed water to seep between the boards and caused rot, thus the replacement deck. Treating it certainly can’t hurt. On the end that will fit into the mortar joint bend a very small hem that will act as a wedge. You should definitely ask him to stop all work until this is resolved. Do you know of any studies comparing the two? A couple of things I found: You mention that you don’t like lags. Replacing rotted sill plates and damaged structural elements is best left to carpenters with lots of experience. This causes one metal to give up electrons to the other metal which weakens the 'donor' metal. House was built in 1996. Interesting stories, some horror. Cut the Tyvek on that line and remove it from that line below. First off you’ll want to get yourself a vinyl siding hook that allows you to “unbutton” the siding without taking everything down. Finally you can install the decking. Each stairway section shall have a light source that illuminates all stairs and landings. He obviously didn’t do as you asked so now he needs to let you figure out what’s going on. PLI-DEK “U” SYSTEM – THRESHOLD FLASHING DETAIL – SURFACING OR CONCRETE OVERLAY. Great website and thanks very much. Install the self adhesive flashing from that point down below the ledger board. I also am going to install it over the top of the ledger board and down along the face of the ledger. If there is little to no rotting wood on the siding and the ledger board is not rotted at all is it ok to leave the wood siding up behind the ledger board and simple install flashing. Or should we pull the deck back and take out the wood siding then replace the ledger board and flash properly? Decks must be constructed in strict ... fasteners, hardware, and flashing when in contact with pressure treated lumber; and as a result, fastener and hardware requirements have changed. J Channel does very little to protect in this case and is frankly only there to hold the siding in place. Do you have any suggestions for me to attach joists to house, can I just put the deck joists to bear right next to floor joists over plate on block wall, Thanks, some typos in comment above but in short I dont have a rimboard, so Do I attach new ledger to blocking between existing joists? Looking for a Lowes Coupon? The second floor joints are fabricated wood I beams joists. I was planning to install the ledger over the house wrap and then Z flash above the ledger as usal. He also said he knows how the deck was built. Thanks, send it to: todd ‘at’ frontstepsmedia ‘dot’ com. Defined by IRC as "The ability of a material to withstand deterioration of its surface or its properties when exposed to its environment." Alex – Depends a bit on what type of siding your house has. How to flash a ledger board attached to a brick house? So unless you have a really tight decking detail I wouldn’t loose sleep over that. Thanks again. along the top of the union. Also, if I did cut the house wrap I’m unclear on the next steps. My thought is to standoff the ledger from the T1-11 using washers as spacers like you pointed out. The floor under there was underlayment. Thank you for all you advice. Once the siding is removed you’ll need to protect the rim joist with some sort of flashing, either rolled flashing or some sort of self adhered bitchathane type product. This helps protect the rough framing if any water gets back there. However, special care should be used when insulating…, Get 10% of with a Lowes Coupon NOTE: Home Construction & Improvement is not affiliated with Lowe's. I'm also a licensed civil and structural engineer with extensive experience in civil and structural design and home construction. We are currently building a low profile deck on what seems to be an old deck that was eventually closed in to be part of the house. Thanks Todd, when you say the top joint are you reffering to the top of the ledger? Could you describe better. Are either the second piece of flashing, or the washers needed? The advice given in this manual is consistent with the requirements Thanks Todd – so what you reccomend is that I replace the whole section at once rather than cutting and replacing 20 inches or so at a time? This is more often a problem encountered with natural stone and brick exterior finishes. You’ll likely need to install that before the roofing, bend it up out of the way, then bend it back down after the roofing. I’m unable to post to the comment area here, (I tried copy and paste)is there an email address I could send a picture or two of my deck project to? The framing is donw and luckily it rained like crazy yesterday and I was able to watch this leaking in action. Should I leave a note asking him to call my cell? There was no flashing under the center window, there was under the two side windows. The siding above should terminate slightly above the surface of the decking to allow air into the space. Detail Drawing (DWG) DWG - 713 KB (en) Plywood Deck Flashing Detail 2. If there is already house wrap on, then cut a slit in the house wrap just above the top of the ledger. Today my contractor told me he will not be cutting the “worst” section of band board, but rather reinforcing it and then sistering the floor joist. Visit this link for more info. Nothing special needed for the concrete location. Thanks for all the great info on your site. The flashing isn’t that hard to fabricate if you rent a sheet metal brake from your local rental center. The steps are as follows: Grind out the grout along a row of bricks. The owner of the company that built the deck was called back once to flash the deck. The contract is all inclusive, but we purchased the decking figuring that we would figure out if there was any difference in the end (12″ on center vs. 16″ and any other details). It’s best if you can get 2-3″ of flashing up behind the stucco, shouldn’t need to seal that edge. Also, footing depths are MUCH deeper up here in the North. Detail Drawing (DWG) DWG - 767 KB (en) Vertical Projection Detail. Ledger cap flashing ensures that water doesn’t get behind the ledger and rot the band board (rim joist) and then get into the structural framing. Learn how your comment data is processed. Chris – What type of wood did he use? I tore the old deck down and are now about to start from scratch. Some folks like using poly coated aluminum flashing as well. It can’t tuck up into the siding, the best it can do is tuck into the 1/4″ overhand of the older flashing. Do you know who is right? We offer a variety of skylight flashing systems to ensure a weathertight fit for virtually all roof types and slopes. And ledger was attached directly to the band joist…with nails. You need to install flashing into the joints and mortar them. That way you can slide the drip cap up under the house wrap. Do you have any photos? Insert the flashing into the mortar joint so that it fits tightly with the wedge. I am guessing this is the same for the entire house. I used Henry in the past for a leaking problem at mothers home and it worked. The most important piece is having a piece of flashing that is installed up behind the siding (3 inches minimum, 6 inches is better), runs down over the top of the ledger board and under the decking. Any ideas of what can be done? But little sentences can do big things (just ask the US Constitution), for example, two little sentences in chapter 7 specify four broad requirements: "Flashing is required where exterior porches, decks, or stairs attach to a wall or floor assembly of wood frame construction. As you can see from the diagram and the photo flashing must be done in layers. So the real question is appearance and how you want the deck to look. several people told me to lag to banding, but doesnt seem that strong to me. You really need to embed the flashing in a joint so that water won’t get behind. My present plan is to use a bitchathane membrane behind the ACQ ledger and stainless steel z-flashing above the ledger. He feels the j channel put on by still another contractor is sufficient and, “it would not be cost effective” for him to flash the deck now. I want to ensure I do not cause the same problem on the new deck. All the flashing has to do it stop water from getting into the wall. I’ve added a sketch in the article showing you what the detail looks like. Depending on which direction your decking runs it can be as easy as removing a piece of decking along the house, removing the lower row or two of siding, installing the flashing and then re-installing the decking and siding. I think it’s another good layer of defense but not 100% necessary if you flash things properly. I am concerned that the Trex deck is going to be mutilated if the boards are to be taken up to allow the flashing to be done properly. Would this negate the need to cut out a section of the siding, flash, replace siding in cutout area then attach ledger since the siding remains as one continuous sheet? I have a log home with an existing deck which has the deck ledger attached directly to the house rim joist with out flashing or washer spacers for a water gap.