Flashing wall to concrete slab This means the concrete extends all the way around. This is a common occurrence, but is it […] 12 votes, 11 comments. 5" below the wall/siding. But I have two small children, and I’m afraid that angling flashing over the 4-in. This arti- top surfaces of concrete floor slabs façades. This, however, violates the installation instructions which state that the sheathing must be a minimum of 1/2″ away from concrete or masonry to avoid wicking. Oct 4, 2016 · As for the basic question of what types of flashing can be used with concrete and masonry, Heckmann Building Products, which makes flashing for masonry construction, recommends against using aluminum as flashing with brick or concrete. Apr 28, 2024 · Is the other aspect having a direct concrete-to-concrete connection where the new concrete meets the existing foundation wall? I had assumed that running the membrane down the sheathed floor trusses and on top of the foundation wall (before pouring the slab) would help reduce moisture transfer. Mar 21, 2017 · I did one a couple of months ago and poured a small stem wall to put the plate on. In this video I'm showing the best practice way to seal the bottom plates of a home built on a concrete slab. Mar 28, 2022 · My builder set zipr sheathing right up against the concrete foundation walls, and added an aluminum U flashing at the bottom. I plan to convert the patio to an enclosed sunroom. Z flashing will be added after the fact regardless, however its unclear if this should be taped first? Steel and concrete structural frames often rely on nonloadbearingmasonry curtain or panel walls to enclose the structure. This article covers installation tips, common mistakes, and types of flashing, like continuous and through-wall. To make the bottom of the walls/floor water tight, we installed metal How to Flash siding to concrete slab on a remodel reside Sep 14, 2018 · How to Safely Pour Concrete Against Siding Find out what type of flashing you can install between new concrete steps and existing siding or sheathing to prevent rot and other water damage. Stucco Construction Details Stucco at Foundation/Finish Grade Stucco at Foundation Stucco Termination at Concrete Slab Stucco Control Joint Stucco Horizontal Expansion Joint Stucco Termination at Cantilevered Wall Install flashing integrated with air and water control layers around piping, vents, and other wall penetrations as part of an exterior wall retrofit as follows: Remove the existing cladding and trim. Thin Set Tile Vertical Projection Between Slabs Vertical Projection Wall Bearing on Slab Wall to Deck Flashing Wall to Deck Flashing Jul 13, 2022 · A Passive House construction detail for air-sealing the mudsill, beginning at the concrete-free slab on grade. Using the existing 6x6 support beams, the footprint of the addition is several inches smaller than the concrete pad. Panel and curtain walls are distinguished by the fact that a panel wall is wholly supported at each story, while a curtain wall is supported only at its base, or at prescribed interims. Feb 5, 2023 · How to Seal the Flashing at a Wall Meeting a Concrete Slab? Why It’s Needed: Sealing the flashing is necessary to prevent water from penetrating the wall and causing damage to the siding and framing. Image Source The below-grade wall performance depends on the appropriate design and Explore resources on concrete masonry and hardscapes, including flashing details for single-wythe walls and architectural concrete masonry construction. The outer edge of the fl ashing should have a hemmed edge for stiffness and to protect a raw sheet metal edge from The development of steel and concrete structural frames during the early twentieth century enabled building designers to aban-don height-restricting perimeter bearing walls and use the exterior walls as a skin or building envelope, used to protect the interior of the building from the elements. This design prevents the bottom of the wall panel from coming in direct contact with the concrete, reducing the risk of wall panel corrosion. Our article will give you a thorough idea about it. lip would be dangerous, not to mention unsightly. When installing flashing in construction, it will be used where two different materials meet, such as siding and concrete. Detail Drawing (DWG) DWG - 799 KB (en) Wall or Slab Joint Detail Detail Drawing (DWG) DWG - 796 KB (en) Wall or Slab Joint Isolation Detail 1 Detail Drawing (DWG) DWG - 774 KB (en) Wall or Slab Joint Isolation Detail 2 Detail Drawing (DWG) DWG - 756 KB (en) Ledger to concrete interface - flashing typical? I can find almost zero resources online about properly finishing a ledger when it's attached to concrete. Concrete masonry curtain and panel walls should incorporate flashing and weep holes as for other concrete masonry construction. Jun 19, 2025 · The installation of flashing at the base and behind the concrete wall panel is essential, considering factors such as wind pressure, hydrostatic pressure, and capillary action. Ensure proper installation for weatherproofing and durability. Base Channel with Flashing This method uses a painted trim piece for the wall paneling to sit atop – attached to base channel fastened directly to the slab with masonry fasteners. All the wood materials that are going to be behind the concrete should be pressure treated lumber and properly flashed behind the concrete with metal flashings that will last “forever. My 10" double stud wall will cantilever 4" to sit flush with the 4" of perimeter foundation foam. On top of that, and extending above it, goes your flashing. Environmental considerations include such factors as the physical state of moisture present (liquid, solid, or vapor), air movement, and temperature extremes as well as temperature differentials. A wall or siding needs special detailing to prevent leaks and damage where the wall encounters any horizontal surface such as a foundation wall top or a concrete porch slab. more I'm building a deck this summer and the ledger board will be attached to the concrete foundation wall with 1/2" spacers between board and concrete. I would like to also use flashing, but everything I see online shows the top of the flashing tucked beneath the siding. Sep 14, 2008 · Assuming the slab slopes properly, if your flashing kicks the wall's drainage plane an inch or an inch-and-a-half out over the slab, you should be okay. I'll just buy rolls of painted Jul 1, 2020 · Figuring out flashings by Harrison McCampbell, AIA Nick Warndorf, RRO, CIT Roofing professionals explain the importance of through-wall flashings. 3) includes such details. Do I buy some large through wall flashing that runs from the sheathing out over the edge of the slab and put down some sealant between the sole plate and slab behind that? Jun 19, 2025 · Flashing concrete with 2-inch foam slabs is an effective way to soundproof your home. In severe climates or during times of heavy rain or snowfall, this type of protection is essential to protect your home from damage. Renail the siding to the studs and to the new blocking. This article series provides details of foundation tops, building walls, exterior trim, wall corners, and roof-wall intersection flashing to prevent leaks & water damage. It has a slab foundation with shear wall on the interior. How can I construct This video will provide you with a few examples that can be used for sealing the bottom of a wall framing plate or the bottom of an exterior wall that's sitting on top of a concrete slab. monoslabezform. On the wall: the ice and water membrane should be glued to the sheathing up beyond the top of the last course of siding. Oct 26, 2021 · Do you need a clear idea about flashing between siding and concrete? Then you’ve landed in the perfect place. Install flashing at bottom of all exterior walls and properly integrate the flashing with other wall water management details to direct water down and out of the wall. Below are all the basic tools we use and recommend on Amazon's website. For water protection here, at a minimum install a cap flashing that tucks under the sheathing wrap and goes over the ledger. Aug 11, 2023 · Concrete is highly porous and can wick water extreme distances through capillary forces. . May 21, 2020 · Outside, slip a z-flashing up under the cut edge of the siding allow about 1/2" gap between the cut edge of the siding and flashing so that you can paint it. Design for Dry Single-Wythe Concrete Masonry Walls, Flashing Strategies for Concrete Masonry Walls and Flashing Details for Concrete Masonry Walls (refs. • When flashing is placed over a brick, block, or concrete wall adjacent to habitable rooms, a thin bed of mortar or compatible mastic must be spread onto the brick, block, or concrete walls before the flashing is set in place. Drawings for flashing details, often the only method of communicating the necessary information between the designer and contractor, should be comprehensive and show sufficient detail for the proper interpretation and installation of flashing systems. How to flash with Mono Slab® EZ Form. My current deck plan calls for installing my ledger to a concrete slab below my sunroom, about 3. com/totalflash-panel/ Subscribe and follow my Podcast on Apple or Spotify! Jun 4, 2021 · We are currently enclosing a concrete slab patio. Sep 5, 2017 · We are in Minnesota (Zone 6a). I often run into this issue when doing remodel projects. On buildings where the construction team is working… Flashing Details for Concrete Masonry Walls – At critical locations throughout a building, moisture that manages to penetrate a wall is collected… Flashing Exposed with a Drip Edge – Flashing should be exposed with a drip edge, as shown below… I encounter many scenarios where the stucco is finished and then concrete is poured around the house and sometimes the finished height of the concrete seemed to be an afterthought and it is poured right up against the stucco walls, oftentimes burying the weep screed at the bottom. Aug 9, 2022 · Brian Pontolilo demonstrates how to air-seal where the concrete foundation, mudsill, and sheathing all meet using liquid flash. Feb 27, 2025 · Learn how to properly install and seal flashing where siding meets concrete foundation to prevent water damage and protect your home's exterior. The exterior of the unit has metal flashing installed at the bottom of each wall where the stucco terminates at the slab. Hey, my shed wall will be touching a short concrete slab (only 4 1/2" height). 3, 4 & 5) provide detailed information. For the house Brian and his wife are b Learn how to waterproof your covered porch facing Lake Austin with this helpful tip from Matt Risinger. Learn how to do it yourself with our easy-to-follow guide. The patio slab extends 4 in. The type of flashing material to be used is governed by both environmental and design/build considerations. IMO it's a big mistake to put the wall directly to the slab in these situations. TEK 19-05A Flashing Details for Concrete Masonry Walls (ref. If metal is to be used as flashing, stainless and galvanized steel are better choices. Oct 15, 2020 · Also note the use of a fiberglass tie connecting the grade beam to the monolithic slab/grade beam assembly. 1K Membrane flashing was retrofitted here to protect the ledger and wall framing from water intrusion. So i'm Installing ZIP System Sheathing: Sheathing-to-Foundation Connection Builder Ben Bogie presents three methods for making an airtight connection at the bottom of your walls using sealants or tapes that will adhere to concrete. The flashing is designed to adhere directly to the air barrier. I can flash the connection between the bottom plate and protect the foundation insulation all in one shot. 18M subscribers 1. 5). You'll see a Carlyle through wall flashing with a water based primer. Check out Mortar Net's TotalFlash® Masonry Cavity Wall Drainage Solution: https://mortarnet. Unitized Curtain Wall Anchors Anchor plates for multistory unitized systems that are often used for feature areas and observing curtain wall construction— curtain walls are often recessed into the of buildings as well as for entire building both in the factory and in the field. Mar 28, 2025 · What is Flashing and Why is It Needed? The small strips of waterproof material that you would often see running along the side of a wall where it meets another surface are called flashing. beyond the foundation, and I want to keep the new walls in the same plane as the existing walls. www. Learn how proper installation can reduce water intrusion by up to 90% and protect your foundation from mold and structural issues. So I'm trying to figure out how to properly flash this wall to prevent water intrusion. Sep 1, 1993 · Q: I have a concrete patio in the corner of my L-shaped house. Its purpose is to prevent water from getting in, as those spots typically create openings that can be very problematic if not sealed properly. How would you flash this to keep the sole plate from damage? I laid it on adhesive flashing tape to keep it off the slab, but I’m not sure how to best i stall the sheathing siding. By flashing your home’s siding/concrete joint, you create an effective weather barrier that can help reduce water infiltration and corrosion. The flashing performance depends on the proper selection of materials, detailing, and installation. Figure 13: Monolithic Slab/Grade Beam With Exterior Slab Edge Insulation and Brick Veneer Note the stainless steel flashing set in mastic and sealed to the slab and sealed to the concrete grade beam for the brick veneer. com208-558-5200 Installing metal flashing before concrete. In my case, there is about a foot of foundation wall between the bottom of the siding and the top of the ledger board. 2200 sq/ft single level, slab on grade, with a 1700 sq/ft/ shop. Installing a poly vapor barrier over the concrete, using sleepers under the sub-flooring, and applying a quality sill plate sealer and fluid-applied flashing are some of the essential steps to seal the space between concrete and wood. Flashing is a crucial component in construction that helps prevent water penetration and moisture damage at vulnerable points in a building, such as where siding meets concrete. While the manufacturer’s standard cle will present some Sep 1, 2012 · Well of course the best solution is to remove all the concrete and start over. Ensure your home remains dry Waterproofing - Flashing a Concrete Slab To Porch Matt Risinger 1. May 9, 2020 · First questions pertains to whether I would use flashing tape which would connect to the sheathing, extend to the concrete slab and rundown the side slab. Nov 13, 2022 · If look for flashing where siding meets concrete, its the right place for you! The term flashing refers to a thin piece of material (usually metal) that is used to create a water-resistant barrier. Say goodbye to water damage with this innovative solution for your indoor-outdoor space. Jul 6, 2017 · • Any cavity space below the flashing at the wall base should be completely filled with mortar. ” These metal flashings should be over a foundation grade rubber membrane. The South and West walls have flashing Deck Edge and Wall-to-Deck Detail (Concrete) Drain Flashing Detail (Concrete) Concrete Expansion Joint Inside Corner Flashing Detail (Concrete) Multiple Flashing Details Outside Corner Flashing Deck Termination Detail (Concrete) Post Flashing & Reglet Detail Scupper Flashing Detail Side Mount Railing Detail (Concrete) Stair Flashing Detail (A) Jun 25, 2025 · Learn how to attach flashing between concrete and wood with a step-by-step guide and create a waterproof seal by understanding the perfect process of flashing. Learn about flashing techniques for siding and concrete junctions. Sloped concrete up for a smooth walk into and out of the room and installed as slider. Where the concrete meets the building, install an L-shaped flashing. The fl ashing should extend on to the Cultured Stone® watertable/wainscot 1⁄2" minimum. Design/build considerations include the selection of the proper type of flashing material Jul 10, 2022 · Hello Everyone, We converted our garage into an Accessory Dwelling Unit. Provide a GSM fl ashing over the top of watertables and wainscots when additional wall cladding occurs above, including additional courses of Cultured Stone® veneer. I'm wondering what would be the correct way to… Watertable Flashing. I attached a quick sketched detail of what I plan to do. Aug 23, 2023 · Concrete foundation flashings direct water down and away from a building and contribute significantly to a below-grade wall waterproofing system, an essential component of a durable, strong, and safe building. Brian Pontolilo demonstrates how to air-seal where the concrete foundation, mudsill, and Zip System sheathing all meet. Oct 3, 2025 · Conclusion It is crucial to take proper measures when it comes to putting concrete and wood together. When used in construction, flashing is typically installed where two different materials meet, such as where siding meets a concrete floor foundation. Additional information for flashing single-wythe walls, particularly architectural concrete masonry walls, and means for providing a higher level of structural continuity at flashings is contained in TEK 19-02B (ref. This metal flashing was then taped to the OSB. The slab extends out about 3-4" past the wall. Keep water out by creating a stainless steel pan with upturned lips and sealing it in place. If a drainage gap is not provided between the framing and the concrete slab, water can easily be driven inside, rotting out the sheathing, rim joist, and any adjacent wood components, even if a flashing membrane has been provided between the concrete porch Apr 16, 2025 · The process of installing Thru-Wall Flashing is done after the primary air barrier has been installed to the field of the wall. We added a front porch to this house and the inside to outside concrete only had a 3/4" drop to transition from framing to the porch slab Discover the critical role of concrete foundation flashing in home construction and its impact on water damage prevention. One common method of improving a home's energy efficiency is by installing rigid foam insulation under a concrete slab. qxoraqx nlafk wyq mqcw phcnknli mffj grfqg mnsybo vwsd ggs zkiiimjv iil hpdlkimw rbiqgmv lhwe