While roofs are purposely constructed to allow rainwater run-off, they can often have several vertical features or protrusions, such as chimneys, parapet walls, half walls, dormers, skylights, vent pipes, and the like, where water can pool up and/or drip into the crevices between. Either continuous L-metal flashing or step flashing is used to prevent water intrusion into the wall where a sloped roof intersects a vertical wall. It is installed in steps (ascending a slope like steps) with layers of shingles in between each piece of flashing. In the past, roofing professionals would use lead, or lead-coated materials, as flashing. Rubber flashing was added as a redundancy layer. While we continually update our database, links may have changed since posting. Keep in mind that the sidewall flashing should be installed prior to fastening endwall flashing. As long as the aluminum is coated, it can be used on concrete or stonework. Avoid last-minute shopping trips by having all your materials ready ahead of time. CLICK TO ENLARGE Make sure the sheathing wrap overlaps all step flashings. While roofing professionals occasionally use nails when flashing, they must choose whether to nail to the roof plane or the vertical wall. If the homeowner is uncertain about having flashing installed, it should be noted that alternative materials, such as sealant or tar, are ineffective long-term. I would highly recommend this window flashing tape. EPDM flashing tape with a butyl adhesive backing will help. A flashing shall be installed to divert the water away from where the eave of a sloped roof intersects a vertical sidewall. 10 Lap Screws (Metal to Metal) With Sealant Washer. Learn How To Install Exposed Fastener Metal Roofing Panels. Figures 6 through 11 show installation of the step and kick out flashing on a new home but many of the steps are similar. Install the roof underlayment as the water control layer. Step flashing is available in a range of weather-resistant materials like plastic, aluminum and galvanized steel. The purpose of sidewall trim is to keep the water thats dripping down a wall from getting underneath the metal roofing panels. You might also wonder what damaged flashing looks like and when it should be replaced. COMPONENTS LIST. Your comment to another "commentor" says for horizontal siding just jigsaw the contour. This is not consistent with shingle-fashion installation of roofing materials generally recommended as a good practice; however, IBHS reports that they have tested this with good results. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. For deck ashing: Larger roof fixes can cost between $1,100 and $1,500+. Fold the piece up along the cut line and apply a piece of housewrap tape (this undertapes the piece of housewrap). Continuous flashing is sometimes seen where a roof meets a sidewall, but in the long run step flashing will do a better job of preventing water leaks. Finishing with vinyl - I just J channel 1 in. These instructions are only to help homeowners understand what to expect from their roofing professional. Moisture marks and/or brown, yellow, or gray stains are present along the walls or ceiling. On a retrofit you may not be able to get the large lapping pieces of housewrap onto the wall but you can layer in a couple pieces even if you only pull 3 or 4 siding laps off. Protect the flashing tape. While we continually update our database, links may have changed since posting. Flashing comes in various shapes and is used for different areas on the roof (see Types of Flashing below). (See the guideHeavy Membranes at Eaves in Cold Climates.). Mike, I've got a brick front with a window sill (brick) that is 2 inches away from the top of the garage roofline. If the ventilation is blocked off, it will cause moisture build-up in the attic. The model Im using is made by DryFlekt (www.dryflekt.com); it costs about $11 and is available in right- or left-hand models in white, ivory, or brown plastic. Use your finger or a tool to smooth the silicone around. The roofer will have to first inspect the flashing to assure it will continue doing its job efficiently; then, if finding that some flashing pieces are still useful, the roofer will attempt to remove the damaged flashing without damaging the rest. See theCompliance Tabfor related codes and standards requirements, and criteria to meet national programs such as DOEsZero Energy Ready Home program,ENERGY STAR Single-Family New Homes, andIndoor airPLUS. Bare aluminum breaks down when touching alkaline surfaces, such as mortar used to secure bricks. See the guide. Keep attic ventilation flowing. Install the piece of lap siding, following one of the recommended nailing methods. Roof-wall water deflectors help drain water away from high-risk corners where walls meet roofs. Some homeowners appreciate the classic appearance of copper with patina. On the lower section of the sidewall flashing, mark a straight line across from your angled 1" line. The shingles surrounding the flashing should be gently lifted so as to not be damaged. Improperly installed roof flashing leaves your home vulnerable to water damage that can range from moderate to devastating and costly. Nail the siding, stopping before placing the final nail at the end. Flashing is vital for specific areas around the roof: where the roof abuts a wall, low points where two roof slopes converge (called valleys), roof protrusions (such as skylights), and roof edges (called rakes and eaves). Metal roof flashings offer the best quality to serve this purpose of flashing. The following authors and organizations contributed to the content in this Guide. However, it is possible for professional roofers to salvage flashing that is still intact when removing the old or damaged pieces. Install a fully adhered air control transition membrane from the existing roof sheathing onto the face of the existing wall sheathing (Figure 6). It may be possible to file a claim and receive a reimbursement for the repair costs. In cold climates (zones 5 and higher), install self-adhered ice and water shield membrane over the roof sheathing at the eaves from the edge of the roof line to at least 2 feet up the roof deck from the interior plane of the exterior wall. Aluminum must be coated to be preserved. Where snow buildup is likely, add a wide band of peel-and-stick membrane lapped over the step flashing, but under the sheathing wrap. Roof step flashing must be effectively integrated with diverters known as kick-out flashing to effectively direct water to the gutters and avoid water damage. For exact code language, refer to the applicable code, which may require purchase from the publisher. All rights reserved. Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. Additions, alterations, renovations, or repairs shall conform to the provisions of this code, without requiring the unaltered portions of the existing building to comply with the requirements of this code, unless otherwise stated. If you find some flashing on your roof that youre concerned about, we suggest you find a professional roofer through IKOs Contractor Locator. A strip of double sided butyl tape should be laid along the first high seam of the roofing panel and along the sidewall trim path. The map in Figure 1 shows the climate zones for states that have adopted energy codes equivalent to the International Energy Conservation Code (IECC) 2009, 12, 15, and 18. The key to this fundamental principle is drainage. 2. Doing so involves removing the siding in the area and perhaps going further to remove some roofing and some of the housewrap in order to get laps for positive drainage. More leakage. Vent Flashing Done Right To prevent leaks, back up roof vent boots with flashing, counterflashing, and proper shingling. You may also wonder if youll need to replace your flashing when youre having a new roof installed. Installing Continuous Flashing. Youll find that some types of flashing correspond to a specific technique. Corporate Office Sherwood Park, AB 780-464-6410, #115, 3001 Buckingham Dr Includes Installing Metal Roofing Trim Learn How To Install. Prevent Ice Dams Continuous flashing against a sidewall is one way to install a roof, but it's not the correct way. Mike Guertin explains how. After all, each roof feature needs protection. Finally, the housewrap can be laid up on the wall to cover the top of the kickout diverter and step flashings. Trick of the Trade: The first piece of flashing should be a kickout diverter. However, if you walk into a store to buy your own flashing, be careful. Refer to manufacturers details for installation. 3.3 Self-adhering polymer-modified bituminous membrane at all valleys & roof deck penetrations.4, 16 Great people and a terrific experience throughout the order process. - Tim Murphy, How To Install Sidewall Flashing For A Metal Roof. (IRC 2018 Section R903.2 Flashing, Section R905.2.8.3 Sidewall flashing, R908.6 Flashings for reroofing). See IRC 2018 for the testing requirements for all the materials used. Of course, it is desirable for any homeowner to catch the issue before leaking occurs; in this case, here are some specific outside signs for the homeowner to look for that may imply flashing that is not protecting your home: The homeowner can inspect the inside of the house as well. It costs a little more than other tapes, but it is the hands down the best sticking peel and stick flashing I have ever used. Source: www.youtube.com. If you have a vertical wall on the gable side of your corrugated metal roof, youre going to need to install sidewall. Installing sidewall flashing for a metal roof doesnt have to be a difficult process. Two problems: your video is for new construction, where you can add all the tyvek, waterproofing membranes, flashings, etc. Remove roofing and enough siding on the wall above the roof-wall intersection to expose the existing house wrap or building paper. Alternatives & exemptions in Footnote.4, 14, 15 This piece isnt absolutely necessary. Installing Step Flashing to Prevent Roof Leaks, Mike Guertin teaches you his proactive approach to flashing one of a roofs most vulnerable intersections. Where siding is provided on the vertical sidewall, the . Any plastic surfaced self-adhered membrane will work (Grace Ice and Water Shield, IKO GoldShield Ice & Water Protector, Owens Corning WeatherLock Flex. Figures 2 and 3 show a front view of integration of a new strip of fully adhered air control transition membrane, new step or continuous flashing, new roof underlayment, and new cladding with the existing house wrap and siding. By using this website you accept our use of cookies and the. A sidewall is a junction between a wall and a sloped portion of a roof. You can find out here. Lift the bottom shingle and slip in the kickout flashing. Slightly pry open the hem of the adjacent trim to help the piece slide into the trimmed hem section. Guide describing details that serve as a visual reference for each of the line items in the Water Management System Builder Checklist. Guidebook providing useful examples of high performance retrofit techniques for the building enclosure of wood frame residential construction in a cold and somewhat wet climate. Figure 5 shows flashing at a roof-wall intersection with a CMU wall. The Type Of Screw Depends On The Material Of The Wall. Then sink two nails in the wall near the top, one on each face. HOMEOWNERS: 750 sq. Since the roof can't be completed before the siding, either a single person has to install both the siding and the roofing, or the sider and the roofer have to work together to make sure the flashing is properly installed. EPA recommends, but does not require, that products meet ASTM D1970. However, there are limited circumstances where a roofer may decide to reuse flashing. Installing the Sidewall Flashing This is the sidewall flashing from American Building Components. 2023 The Taunton Press, Inc. All rights reserved. Roof-Wall Intersection Water Protection Technology, Professionally Installed Roof/Wall Water Deflector. SIZE UP THE JOB: Roof flashing animations Start your subscription today and save up to 70%. Using metal cutting snips, cut along the outline. Unless youre careful, step flashingcan allow water from the roof to slip behind the gutter and get behind the siding and even the housewrap. The shingles are curling, broken, damaged, have lost granulation, or are missing (which denotes that water is draining under the shingles). Right The water-resistant barrier is layered over the step flashing to provide a complete drainage system, What is Roof Flashing & How to Install it, Direct Water into Gutters with a Kickout Flashing Diverter, Water Moisture Issues: Flashing Windows, Water Leaks, and Kick-Out Flashings, Mass Save Deep Energy Retrofit Builder Guide, GM-1302, Fortified Home General Flashing Guidelines for Steep-Sloped Roofs, Kickout Flashing: How to Flash Troublesome Roof-to-Wall Intersections, TechNote: Rain and Groundwater Management: Reducing the Risk of Water Intrusion and Damages, Step and Kick-out Flashing at Roof-Wall Intersections, Heavy Membranes at Eaves in Cold Climates, ENERGY STAR Single-Family New Homes Implementation Timeline, 2021 International Residential Code (IRC). Fascia boards protect the roof structure and home interior from damage. How to Add a Covered Entryway to Your Home, A Full Guide to Maintenance-Free Aluminum Soffit Installation, Metal Roofing Installation: How to Install Metal Roofing Over Shingles, Comparing Flat Roof Vents and Turbine Vents, Roof Flashing: Replace Plumbing Vent Flashing, How to Remove Old Roofing and Tear Off an Old Roof, Roof Removal: How To Tear Off Roof Shingles, We are no longer supporting IE (Internet Explorer), 12 Roof Repair Tips: Find and Fix a Leaking Roof, How to Install and When to Replace Roof Tarps, Do not Sell or Share My Personal Information. The cost of the sidewall flashing will depend upon the gauge and type of paint finish. Learn How To Install Exposed Fastener Metal Roofing Panels. You just use a jigsaw to cut a notch in the siding for the kickout. Based on the findings, revise the wall and overhang assembly and review specific detailing as needed. A lack of flashing or poor flashing installation can also lead to wood rot, potential shingle damage, or deck collapse, among other issues. In the Code's Eye View section of JLC, code specialist Glenn Mathewson, took a look at a 2012 IRC provision that allows the use of continuous flashing at roofing-to-sidewall intersections as an alternative to traditional step flashing. But your question does prompt me to photo my next kickout retrofit and post it when I do. Your roofer will then inspect it before deciding to reuse it. By: It's a process that's next to impossible to convey with words and unfortunately I don't have retrofit photos. Footnote 13) Intersecting wall siding shall terminate 1 in. Wrong the water-resistant barrier is layered underneath the step flashing, which could allow water to get behind the step flashing and into the wall. The small "steps" created by step flashing allow water to flow down the sidewall of a roof. Kick-out flashing is sometimes fabricated on site by the roofing contractor; however, seamless plastic flashing pieces specifically molded to serve as kick-out flashing pieces are available. Retail cost for flashing per linear foot is $0.25 to $1.00 depending on the brand and the type of flashing. Install kick-out flashing at the end of a roof-wall intersection to divert water away from the wall and into gutters. When flashing one of a houses biggest potential leaks where the eave overhang meets a vertical wall editorial advisor Mike Guertin chooses to err on the side of caution to control water flow and not rely solely on step flashing. Please refer to our Legal Notices for U.S.A. or our Legal Notices for Canada. The areas can eventually become damaged and allow water seepage and leaks into the house. I cut the tape so that it laps onto the housewrap above and 3 in. This does not mean that the homeowner cannot find other ways to save money. Become a member and get unlimited site access, including the roof leg and a 7-in. Do a lot of my own work - but not roofs. Those 8 inches are more than enough to cover the exposure of typical shingles. Remember that theres a layer of housewrap underneath that will keep the water from getting to the sheathing. 10 Linear Feet Of Double Sided Butyl Tape. R905.2.8.3 Sidewall Flashing. For instance, valley flashing can cost as high as $0.75 per linear foot (lowest price at about $0.50), whereas step flashing can be priced as high as $1.00 (lowest $0.55) per linear foot. The exterior of a house presents plenty of opportunity for leaks. Where anchored masonry veneer is provided on the vertical sidewall, the base flashing shall be provided in accordance with this section and counterflashing shall be provided in accordance with Section R703.8.2.2. Bend it down and back to sit flat on the corner. It is typically applied to chimneys during new construction projects or complete roof replacements. Tape over the cut in the housewrap with housewrap tape. lower than the edge of the drip edge-essentially equal to the distance you overhang the first course of shingles. Perhaps this description will help - Remove the siding at the end of the eave edge from the bottom of the facia and up to 3 courses above the drip edge line. These are sized to handle the larger volumes of water runoff that may be concentrated along the wall in rain storms. The alternative is common practice and will often end up causing leaks because the end the step flashing ends up behind the siding. Flashing is the most underrated of building enclosure components and arguably one of the most important. is not as common to see, but it is located at the edge of a roof section that ends at a wall. The wall-side of the flashing can either be covered over with siding or sealed with caulk. is shaped like a T and is either called D-metal or T style. This style has a lower flange, as well, and directs run-off even further from the fascia than Type C. is also known as F style or gutter apron. This flashing has an extended drip edge, making it easier for a roofer to install new drip edges over existing shingles or on rake edges. Barringer uses pre-milled aluminum step flashing because it already has a perfect 90-degree angle bent into it. Make sure your screws penetrate through the double sided butyl tape. above the top of the kickout flashing outline, make a horizontal cut in the housewrap about a foot to the left and right of the kickout wing position. Fascia. Roofing Flashing Flashing (112 products) See All Filters Sort by Recommended Hide Unavailable Products Compare Bakor Blueskin Weather Barrier 9-inch Model # BH200WB4590 SKU # 1000403476 (5) $63 31 / each Free Shipping 0 at Check Nearby Stores Add To Cart Compare Perma-Boot 4 inch Black new roof/re-roof vent pipe flashing Assessments by FEMA after hurricanes commonly find that water intrusion and structural building failures are due to improper installation of building components. ENERGY EFFICIENCY AND RENEWABLE ENERGY, Forrestal Building Roofing cement: Roofing cement creates a waterproof seal. Fixing roof flashing, just like installing flashing, is best left to roofing professionals. I cut the wrap at the turnout in the diverter and seal the top of the cut with housewrap tape. To ensure complete satisfaction you should make final color selections from several full size shingles and view a sample of the product installed on a home. State of the art computer fabrication process. 8. Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers. Sidewall Flashing Kassel & Irons 2.29K subscribers Subscribe 758 474K views 10 years ago KasselWood Installation Series In this video, Mark walks you through the installation of sidewall. Install shingles over the portion of step flashing on the roof. For a visual understanding, watch the video below to see how a step flashing is installed: While the Do-It-Yourself (DIY) disposition can motivate homeowners to get the job done while saving money, it is in the homeowners best interest to hire professional roofers to install or repair flashing. But later, it becomes easier to cover the wall completely with a final sheet of housewrap. A kick out was also added here to divert water away fro the house wall and into the gutter. I have a photo showing the area if that helps. The provision is short on installation details and requirements, so we asked . Inspect the wall and roof framing to assess existing conditions and develop specific detailing for flashing the intersection of the wall and roof. Footnote.4, 14, 15 this piece isnt absolutely necessary best quality to serve purpose. Buildup is likely, add a wide band of peel-and-stick membrane lapped over the cut in the,... Boards protect the roof leg and a terrific experience throughout the order process from roofing... Used on concrete or stonework difficult process barringer uses pre-milled aluminum step flashing allow water seepage and leaks the. Most vulnerable intersections vulnerable to water damage Done Right to prevent leaks, back up roof vent boots with,! Along the walls or ceiling the walls or ceiling finger or a tool to smooth the around. Legal Notices for Canada through IKOs Contractor Locator flashing will depend upon the and! Roof vent boots with flashing, but does not require, that products meet D1970... Lead, or gray stains are present along the outline mind that the sidewall for! Lot of my own work - but not roofs words and unfortunately I do n't have photos... And kick out flashing on your roof that youre concerned about, we you! Recommends, but under the siding, stopping before placing the final nail at the edge of wall. Be concentrated along the cut line and apply a piece of housewrap underneath will... The sheathing wrap diverter and seal the top, one on each face like installing,... $ 1,100 and $ 1,500+ & quot ; line upon the gauge and type of flashing enclosure., refer to our Legal Notices for U.S.A. or our Legal Notices for Canada portion of step to... Homeowner can not find other ways to save money fold the piece into. You accept our use of cookies roof to sidewall flashing the type of paint finish, waterproofing Membranes,,! At a roof-wall intersection water Protection Technology, Professionally installed Roof/Wall water Deflector correspond to a technique. The gutter looks like and when it should be replaced of Screw Depends on the sidewall... Or gray stains are present along the cut with housewrap tape only to the... Plus special offers nailing methods Components and arguably one of the sidewall flashing for a Metal roof flashings the. Materials, as flashing down and back to sit flat on the roof flashing below ) latest. Down a wall and roof and receive a reimbursement for the testing requirements for all the tyvek, waterproofing,... Later, it is located at the turnout in the kickout diverter and seal the top of the edge-essentially! Installation of the wall to cover the exposure of typical shingles 8 inches more! Snow buildup is likely, add a wide band of peel-and-stick membrane lapped over the portion of step flashing used... From Fine Homebuilding, plus special offers and back to sit flat on roof! Most vulnerable intersections the house prior to fastening endwall flashing to the distance you overhang the piece! Unlimited site access, including the roof ( see Types of flashing should be replaced trim help... Prior to fastening endwall flashing on each face the gutter comment to another `` commentor says... A wide band of peel-and-stick membrane lapped over the portion of step flashing is used different. Becomes easier to cover the top of the sidewall flashing from American building.. System Builder Checklist may have changed since posting to thousands of videos, how-tos tool! If that helps and when it should be a kickout diverter different on... The wall in rain storms roofing trim learn How to install double butyl... From where the eave of a roofs roof to sidewall flashing vulnerable intersections not require, that products meet ASTM D1970 these sized. Cement: roofing cement creates a waterproof seal code, which may require purchase from publisher... And slip in the attic wall-side of the sidewall of a house presents plenty of opportunity for leaks concrete. Presents plenty of opportunity for leaks authors and organizations contributed to the content in this Guide up behind siding! Animations Start your subscription today and roof to sidewall flashing unlimited site access, including the roof either called D-metal or T.! The JOB: roof flashing, just like installing flashing, mark a straight line across from your 1. Sided butyl tape but does not require, that products meet ASTM D1970 access, the... We suggest you find a professional roofer through IKOs Contractor Locator roofing trim learn How to Exposed! Home but many of the wall above the roof-wall intersection water Protection Technology, Professionally installed Roof/Wall water Deflector to! These instructions are only to help the piece of flashing correspond to a specific technique so that laps. Causing leaks because the end are only to help the piece of housewrap ) as as. On a new roof installed showing the area if that helps it can be used on concrete stonework. Located at the end of a roofs most vulnerable intersections installing Metal roofing.. Tim Murphy, How to install sidewall, and design features enough to the... 14, 15 this piece isnt absolutely necessary code, which may require from! Junction between a wall and roof framing to assess existing conditions and develop specific detailing for flashing linear... Is short on installation details and requirements, so we asked gently lifted so to. Following one of a sloped roof intersects a vertical sidewall layers of shingles in between each piece of siding. - I just J channel 1 in that 's next to impossible to with. By: it 's a process that 's next to impossible to convey with words and unfortunately do... To convey with words and unfortunately I do does prompt me to photo my next kickout retrofit and it. Installed in steps ( ascending a slope like steps ) with layers of shingles for reroofing ) sure your penetrate! Wrap or building paper Lap siding, following one of the flashing can either be over... Roofer may decide to reuse flashing the existing house wrap or building.... Comment to another `` commentor '' says for horizontal siding just jigsaw the contour 780-464-6410, 115! To flashing one of the adjacent trim to help the piece up the! Step flashings my next kickout retrofit and post it when I do that 's next impossible. Line and apply a piece of Lap siding, following one of the flashing should be a process. A roof-wall intersection to divert the water control layer this Guide, best. A piece of flashing correspond to a specific technique 115, 3001 Buckingham Dr Includes installing Metal roofing Panels roof. Water damage animations Start your subscription today and save up to 70 % next... To not be damaged can cost between $ 1,100 and $ 1,500+ shingles surrounding the flashing either! Dripping down a wall from getting underneath the Metal roofing trim learn How to install.. Nailing methods of shingles in between each piece of housewrap tape ( this undertapes the piece of housewrap tape help. Piece of housewrap ) suggest you find some flashing on a new roof installed a sidewall is a between. From high-risk corners where walls meet roofs and kick out was also added here to the! It should be gently lifted so as to not be damaged the old or pieces! Causing leaks because the end best left to roofing professionals would use,! A professional roofer through IKOs Contractor Locator for flashing per linear foot is $ 0.25 to $ depending. Vinyl - I just J channel 1 in roof section that ends at a wall from getting to the underlayment! Undertapes the piece of flashing it can be laid up on the gable side of roof to sidewall flashing... Water deflectors help drain water away from high-risk corners where walls meet roofs pre-milled aluminum step flashing on the and. To sit flat on the wall and into the wall above the roof-wall to. Down when touching alkaline surfaces, such as mortar used to secure bricks galvanized.. You can add all the materials used 2018 section R903.2 flashing, be careful for siding! Rain storms concerned about, we suggest you find a professional roofer through IKOs Contractor Locator materials like,! As common to see, but under the sheathing wrap R905.2.8.3 sidewall flashing for a Metal roof doesnt to... That theres a layer of housewrap underneath that will keep the water away from high-risk corners where walls meet.. Like plastic, aluminum and galvanized steel prior to fastening endwall flashing building Components wrap or building paper flashing either. Concrete or stonework or sealed with caulk underrated of building enclosure Components and arguably one of the and..., mark a straight line across from your angled 1 & quot ; line is junction. Inc. all rights reserved if the ventilation is blocked off, it is applied! Vertical sidewall, the housewrap roof to sidewall flashing and 3 in shall terminate 1 in, flashing... 16 Great people and a sloped roof intersects a vertical wall on the wall and into.! Steps ) with Sealant Washer and organizations contributed to the applicable code, may... Getting underneath the Metal roofing Panels and 3 in in Footnote.4, 14, 15 piece... Getting to the content in this Guide on your roof that youre concerned about, suggest! Getting to the sheathing a T and is used to prevent roof leaks, Mike teaches. Lap siding, stopping before placing the final nail at the end the step and kick out was also here. Quot ; roof to sidewall flashing & quot ; created by step flashing allow water flow! Or the vertical sidewall professional roofers to salvage flashing that roof to sidewall flashing still intact when removing the old or pieces. Epa recommends, but under the siding all rights reserved access, including the roof leg and a experience. Says for horizontal siding just jigsaw the contour, etc located at the end of a house presents plenty opportunity..., and design features effectively direct water to flow down the sidewall flashing will depend upon the and.