Retrofit existing exterior walls by adding base flashing to improve drainage, which mitigates water leaks and extends the life of the cladding. Insulate around window unit. . Things to Consider During Installing Roof Flashings Against Wood Siding, Metal Mesh in Drywall: All You Need To Know, Does Drywall Tape Need To Be Completely Covered? If builders don't make an effort to prevent moisture from seeping behind siding, the results can be disastrous. Yes, there should be a gap between the roof and the wood siding because the siding materials naturally expand and contract during temperature changes. The upper courses are installed afterwards, overlapping each lower course (, Air space. How to install shingle roofing, using step flashing against a wall, How To Install Roof Flashing Against Siding, LP SmartSide siding installation instructions, Can T Get Homeowners Insurance Because Of Roof. Install flashing at the bottom edge of the exterior above-grade wall and overlap with weather-resistant barrier. Wall moisture control systems help drain water away from above-grade walls. Guide describing details that serve as a visual reference for each of the line items in the Water Management System Builder Checklist. The water-resistant surface could be house wrap or rigid foam that is securely taped or sealed at all seams. Roll tape over the top flange, letting it run past the side pieces by 2 in. Next, you should ensure that the roof wall flashing system prevents water from entering the building. The bottom layer of building paper would be installed next, overlapping the vertical leg of the flashing. Actually it is a bit difficult to find reliable guidance in this endeavour as most industry brick information is intended for industrial buildings, not residences. Section R703.8.5 Flashing. But don't worry my friend. Tuck the screening behind the furring strips, wrap it around the ends of the strips, and pin it in place with the siding starter strip. Place the first piece of step flashing over the end of the tarter strip. Installing roof flashings shouldnt be a problem if you understand and follow the correct procedure. However, installing the flashing step behind the siding is a rule of thumb. Q-The concrete foundation of our home has cracks that allow water to seep in after a heavy rain. For this reason, different flashing types will be installed in dissimilar ways, and the cost of flashing will vary. Align Siding Panels with Window Tops and Intersecting Roofs. Next comes another layer of building wrap, installed like the first layer. We just remove the aluminum siding, ice and water, re-flash and re-install the old siding. Most building codes require two-layers of building paper (or another type of weather-resistive barrier) beneath the stucco. Apply a 0.125 in (0.32 cm) bead of caulk to all vertical joints and butt joints, align the bottom of each piece of siding with the reveal line determined by the spacer stick, and blind nail the siding into studs with galvanized or stainless nails, 1 in (2.5 cm) from the top edge of the . When he shingled the new roof he just used roofing caulk where the shingles meet the wall no flashing of any kind. Retro flashing entails installing roof flashings onto an existing roof or siding. Free Quote. However, the homeowner should note the different characteristics of each metal: Flashing closes the joints between the roof and the roof features in order to protect the house from erosion and leaking. Once the top piece is in place, fold down the housewrap tab. We chose 6-1/4 because it allowed us to install a 16 without having to cut the trim board and it also provided a 3/4 air space over the roofing. Here are the steps to retro-flash a roof. What I can do to remove these stains? . This is a design detail that must be worked out before the foundation is poured. Water leaking through exterior cladding assemblies is a common cause of construction defects and call-backs. My neighbor's house has Hardie Plank siding. At this point, you can also caulk the inside corner of the ledger. Water has been getting behind the siding. Flashing can be installed alongside engineered wood lap siding using the following tools and materials: if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'roofingproclub_com-medrectangle-4','ezslot_2',166,'0','0'])};__ez_fad_position('div-gpt-ad-roofingproclub_com-medrectangle-4-0'); Some pieces of flashing, like Z-flashing, can be purchased off the shelf in certain measurements. Please contact our webmaster if you find broken links. How To Install Roof Flashing Against Wood Siding? about installing flashing on already installed siding. Well thats what I thought too until I was up on a ladder and noticed a small hole and missing and improperly installed roof and wall flashing. Ive actually used epoxy paint to seal the bottom. Our solution was to cut a 6-1/4 of the siding away, creating a space to allow the installation of step flashing. Fill out our form to start your free quote. For a successful base flashing retrofit, the extent of the removal of the existing cladding need only be whatever is sufficient to strip-in the new metal or rigid plastic flashing with the water control layer behind the cladding (see Scope). It must be placed a minimum of 4 inches above the earth or 2 inches above paved areas and must allow trapped water to drain to the exterior. The installation of T1-11 usually proceeds from the bottom up. Finish placing and fixing all the shingles. View from above shows a hole on the top section of the fascia and clapboard, hidden from ground view. The most common are 3/4 inch or 1-1/4 inches thick. Installers line up the bottom end of the sheets an inch or two below the sill plate and install them side by side to cover the lower portion of the wall. 2009 International Residential Code (IRC). David is a seasoned expert in the field of home improvement, including roofing, siding, flooring, and carpentry, and he can walk you through the entire process of how to install flashing on existing roof installations. Siding or trim should be inch . Otherwise, the weight of the drywall will stress the wood framing, causing early settlement cracks, which can be acute if the drywall is hung before the scratch coat has had a chance to cure (DeKorne 2006). Apply a strip of F-channel trim at the top of the exterior walls, under the eaves. This house was also missing one final piece of flashing which was the main reason this wall flashing system failed to keep water from entering the building envelope. T1-11 flashing is a type of Z-flashing, which means the cross-section is shaped like the letter "Z" on its side. Install siding on the . Once the step flashing was installed we primed all of the cut clapboard ends and installed a drip cap flashing under the clapboards. Use your roofing cement to add a layer to the wall against the roof's base. Remove the cut piece and install the step flashing. Depending on the company, flashing may even be available in lead or zinc alloy. The flashing must include a drip-edge to direct any water that runs down the drainage plane away from the bottom of the wall. What I use is the 1/2" because it fits . I installed metal flashing that covers the bottom row of siding and then laps down onto the surface of the roof. The example pictured in Figure 4 is a "drain wrap," which has a texture to it to facilitate drainage after the siding is applied over it. A more practical way to protect building exteriors from rainwater relies on a drainage approach. While we continually update our database, links may have changed since posting. The space creates a capillary break to prevent water from wicking into building materials. High nails are very common from inexperienced James Hardie installers, because they think the nails can go anywhere above the nail line. A ventilation gap behind brick helps to dissipate this vapor before it is injected into the framed wall cavity. Please see theENERGY STAR Certified Homes Implementation Timelinefor the program version and revision currently applicable in in your state. In addition, there should be a gap between the siding and the shingles to prevent moisture from getting trapped. Inside corners also benefit from a spline (see Illustration). Then cut off shrubs, bushes, and tree branches that may obstruct the construction area. The choice depends primarily on the desired appearance but also the experience and skill of the installer. The first layer (installed against the sheathing) serves as the drainage plane and protects the wall sheathing from water. When inserting, make sure that the flashing below does not go beyond the lap siding. For wood siding, trim it into a minimum of inches (6.4mm). If you are installing a new unit, the self-adhesive flashing ($90, The Home Depot) will cover the inside of the framing as well as the sheathing. It can also be butted against adjoining walls with a trim strip used to cover the joint. It is necessary to keep the fasteners away from the step flashing. T1-11 siding panels have a tongue on one side and an overlap on the other, and when properly installed, the overlap covers the tongue and makes the vertical seals watertight. They are most commonly used with horizontally applied siding applications such as bevel. One suggestion was to make a cut in the aluminum siding parallel to the roof line, replace the flashing and then insert an aluminum covered board over where the cuts were made. Section R703.7.2.1 Weep screeds. At the top, tuck metal drip-cap flashing under the siding and on top of the second layer of wrap. Use a felt paper spline, wrapped around the corner and extending 6 inches beyond the corner board, to protect the joints where the siding meets the corner boards (see Figure 1-5 at left). Apply a bead of caulk to the felt and set the window in the caulk. Air Barrier Installation Detail: Interior Air Barrier. Nail the siding, stopping before placing the final nail at the end. Nail the dormer flashing to both the wall and the shingles. This is a good idea for keeping mud wasps from building their nests in the weep holes, and to prevent other obstructions from blocking the free flow of water (. window. Outside and Inside Corner Posts. The project supervisor should inspect for flashing at the base of walls and at transitions between sidings before the siding is installed. Lay a shingle over the step flashing starting at the roof edge. 9. Measure The Deck Area. Rain-screen wall systems are considered best-practice upgrades in all exposure regions to ensure the long-term durability of building assemblies, but are especially recommended in High and Extreme exposure regions, as shown on the map below (BSC 2004). If there is not enough space, the siding could split, warp and warp in many ways. Water freely flows down through this space, gets collected by through-wall flashing at the bottom of the wall, and drains out through weep holes. Hold each piece of flashing in place on the side wall with a single nail. We measured up off the roofing 6-1/4 on both the top and bottom of the roof, snapped lines and then removed any siding nails that were on the chalk line. Use roofing cement to secure this piece and a single nail in the base. To prevent splash back from the roofline soaking the base of the wall, the bottom edge of the base flashing should be at least 8 inches above grade. The shed roof does have some slope and the lap siding on the wall is 4. Recommended Reading: Hydrostop Premium Coat System. Start by installing a metal or vinyl base flashing first. For wood-framed structures, hang the drywall before the lath and scratch coat are applied. a) Follow manufacturer instructions, using either expanding spray foam or fiberglass insulation. 5. Z-bar for siding (which, by the way, can be cut to length with tin snips) should be installed in such a way as to allow any moisture that does collect behind the siding to escape. They then install the Z-flashing on the top edge of those sheets before installing the next course. Place the first piece of step flashing over the end of the tarter strip. They can be ripped out of plywood or purchased precut from a lumberyard, and nailed every 12-16 inches with 5d galvanized nails (, Insect screen. The asphalt or wood shingles are moldy, decaying, or splitting. ), How to Construct a Drainable Wall Assembly with Wood or Fiber-Cement Sided Walls, How to Construct a Drainable Wall Assembly with Stucco Clad Walls. Step 2: Flash the roof and roof-wall connection. But there are some challenges one may, Read More Black Spots On Ipe Deck (Must Know Things)Continue, Sometimes, using roof tiles to protect your house from dust, rain, or excessive moisture is insufficient. Whether your drip flashing has been failing and allowing excess water into your home, or your step or vent pipe flashing is corroding, learning to install roof flashing on an existing roof is a great way to maintain the health of your current roof. 6. Q-My hardwood dining-room table has marks left by a felt-tip marking pen. The flashing itself tears or buckles around the roof features. One part of the job that always gave me a hard time was installing Z-flashing. Remove a portion of the cladding at the base of the wall and examine the condition of the exposed building wrap, felt paper, or water control membrane, as well as the sheathing beneath it. While a home's siding serves as its main source of protection against the elements, windows and other penetrations . (Explained), Or Drywall For Ceiling (All You Need To Know), How To Overlap Or Hang Drywall On 45-Degree Corner? Website detailing the state by state requirements for new home ENERGY STAR compliant construction. The window is now ready for casing and siding. Run a bead of sealant on the corner edge of the dormer . This is most prominent in J-channels that run horizontally, such as trim running along a window frame. How to Add Flashing to the Base of an Existing Wall. Another suggested putting mastic and special panels on the outside and patching on the inside. Start at either end of the wall and place the level middle section of the Z-flashing on the siding panel's top edge, with the wider flange facing upward and against the wall framing. Circular saw can regulate the depth of cut better. Exhibit 1Mandatory Requirements. Any suggestions? You should be able to wiggle the siding slightly. Firs On a wall to be covered with wood, cement board, vinyl or metal siding, the step flashing, and associated roofing, must be installed first, so the siding can cover the top of the step flashing on the wall. A lack of flashing or poor flashing installation can also lead to wood rot, potential shingle damage, or deck collapse, among other issues. Installers then place the upper sheets directly on the flashing and nail or screw those sheets in place. Having fixed the first step flashing in place, apply sealant to the base of the flashing. Im taking estimates for replacing my roof. In order to However, some manufacturers and building codes call for more elaborate flashings to protect the sheathing, studs, and interior walls. Figure 6. Stucco is porous and will always crack. ENERGY EFFICIENCY AND RENEWABLE ENERGY, Forrestal Building Repair torn or otherwise damaged building wrap as needed. Tamlyn XS516 XtremeTrim 5/16" Starter Strip 8' Starter/bottom course for both vertical and lap siding. After installing metal drip edge, run a strip of peel-and-stick membrane to cover the entire joint where the roof meets the wall, extending the membrane about 8 inches onto the . Keep each nail in the center of its slot. Answer (1 of 3): Just between adjoining sheets. (Must Know)Continue, Choosing the perfect materials for your house construction can be quite challenging. In addition to metal flashing, self-adhesive flashings, similar to waterproof shingle underlayment (WSU) sheets used for roofing edges, are often applied around window or door openings. Reply Quote. It is brittle, and cracking is in its nature. Wrong There is no flashing installed at the bottom of the exterior walls to create a drainage system, Water Management System Builder Checklist Guide, Right There is flashing installed at the bottom of the wall to create a satisfactory drainage system. Q-Last year I added a room to the back of our house and ever since have had trouble with roof leaks from where the flat roof on the new extension meets the existing wall of the house. Metal will rust and is not recommended (. Wall venting behind brick and stone veneers is especially important. If yours do not, install J-channel along the . When you install a window in new construction, the building wrap overlaps the self-adhesive flashing. Working around exterior windows can be tricky. The sealant, if present, is crumbling or missing. Nails should be 8" to 12" (203mm to 305mm) apart. Base flashing. They must fit tightly for the full depth of the miter. In some cases, they may put a bead of caulk on the top edge of the lower course of siding before installing the flashing, and they may put more caulk on the flashing before installing the upper course of siding. Homeowners hear a lot of strange suggestions when it comes to repairing a flashing at the bottom of a brick wall, or installing one where it had not been installed. bandboards, water tables or the introduction of any alternative material). Caulk is insufficient to prevent this because a caulk joint isn't permanent; the caulk can separate when the sheets naturally expand and contract, and caulk has a limited service life. However, do what yoy can to preserve the integrity of the bottm edge because its the first place deterioration begins. The goal is to create a wall system that can manage the water that will inevitably get behind any cladding system. With corner boards, there is the choice of applying them next to the siding or over top of the siding as shown here. Building Science Corporation, lead for the Building Science Consortium (BSC), a DOE Building America Research Team Moldable flashing tape is easy to form into an effective sill pan. Water that collects on the through-wall flashing must be able to drain out through weep holes, which are formed by an "open" head joint (as shown in the illustration above), or with rope inserted into the mortar joint (as shown in the photo below). in both flanges, down to the bottom of the wall. Under the right conditions, energy from the sun can push vapor through wet brick with the force of a steam boiler. When you get to the top of the roof, cut a piece of step flashing in half. Step flashing is used where a roof meets a wall, to cover the junction of those elements, preventing leaks, says Roof Key. Photo 1: Slip in the flashing. Clearances. Roof splashing, done properly will keep the walls of our homes safe from soaking up water during rains. Install Metal Z-Flashing. See the Compliance Tab for related codes and standards requirements, and criteria to meet national programs such as DOEs Zero Energy Ready Home program, ENERGY STAR Certified Homes, and Indoor airPLUS. Consult the manufacturer's instructions for the recommended technique for your windows. Ensure a minimum 1.5-inch reveal between the bottom of the siding and the shingles of the roof. 2) Cut the trim to size using a saw. The wall system begins with flashing at the bottom of the wall, which collects water that drains down the wall and kicks it out at the base. Do you have any pictures of something similar? The J-channel goes over the flashing. Window leaks aren't uncommon, especially in older buildings. Place a kick-out flashing at the base of the roof and flush against the wall. Take a usual piece of step flashing and cut into its fold, about halfway. The clearest indication that flashing is underperforming is by water leaking into the house. All in one place. This helps ensure water has no chance to seep behind and damage the sheathing. Use Tin Snips To Cut Flashing. Then shingle normally. Otherwise you will be forced to remove the siding off from top to bottom and reinstall all of it. A 5% slope is recommended. Corner boards are a popular and easier alternative to mitered corners. There are several types of drain wrap: one type has a wrinkled surface; one type has plastic bumps that create a space between the wrap and the cladding (, 8-inch minimum between siding and grade. beyond the corner boards. Wind pressure and capillary action can drive rainwater through the many cracks, joints, and small gaps in a building's exterior. How to Install Flashing Between Paver and Siding Step 1: Grab Your Tools. In a remodeling job, apply self-adhesive flashing strips in this order: along the bottom, then the sides, then the top. Leave a 1/4" (6.4mm) gap at the top of corner posts. Repair torn or damaged building wrap as needed. Run a bead of sealant on the concrete and set the flashing into it and fasten it to the framing. So dont let your home fall victim to rain or moisture. 1) Measure the length of the trim. The Compliance tab contains both program and code information. Air Barrier Installation Detail: Interior Insulation Dam. Your roofing material and preferences should be decisive for your type of flashing. 1. I read your info. Continue with Recommended Cookies. Helping to direct water down and away from your home, this waterproofing technique is especially important to use on roofs and around windows and doors. Roof leakages and deck crashing are some of the consequences you will have to put up with if your roof flashing is wrongly done or deteriorates. The specific materials and installation methods depend on the cladding used on the building. If rotten sheathing is discovered, remove as much cladding as is necessary to discover and repair the source of the water entry and to remove and replace all damaged sheathing. Right A rigid rain screen product completely covers the wall behind the cladding and window framing. Video from Home Innovation Research Labs on installing a stone veneer exterior with an internal drainage plane to protect the home from moisture issues. It is well known that the roof flashing is always installed against the wall, but in some cases, it may be necessary to place the flashing over the siding. Use A Caulk Gun For Flash Caulking. The siding Z bar flashing is compatible with residential and commercial applications. Keep water out of your home and running down the roof where it belongs with appropriate use of step flashing. Place each step piece so that it overlaps the shingles below and below the shingles above in an interweaving style. Slide the widest edge of a Z-flashing strip behind the upper siding panel. Water runs down the siding and can collect in the J-channel. Is your J channel sitting on the roof deck?.,.If the step flashing was not nailed to the wall then a nail bar can be used to remove the old and install the new. Ensure that the step flashing will lead the water directly into the kick-out flashing. This tends to be easiest with lap or panel siding cladding types that can be removed and re-installed by unscrewing fasteners, and most difficult with brick and stucco claddings that require materials to be chipped out and replaced. Of thumb or vinyl base flashing first between the siding and on of... Hidden from ground view ( see Illustration ) use of step flashing of protection against the.... From moisture issues old siding elements, windows and other penetrations, should! A trim strip used to cover the joint alternative to mitered corners walls of our Homes safe from soaking water! Behind brick helps to dissipate this vapor before it is brittle, and tree branches that obstruct... Installed next, you should be a gap between the bottom layer of building overlaps... Commonly used with horizontally applied siding applications such as bevel from a spline ( see Illustration.., install J-channel along the bottom of the exterior above-grade wall and shingles... Tightly for the full depth of the roof where it belongs with appropriate use of step will... Wood-Framed structures, hang the drywall before the siding is a rule of thumb roof edge the cross-section shaped! You should be decisive for your type of flashing in place on the corner how to install flashing at bottom of siding of flashing... Afterwards, overlapping each lower course (, Air space fill out our form to start free! ( 6.4mm ) most common how to install flashing at bottom of siding 3/4 inch or 1-1/4 inches thick ; ( 6.4mm ) gap the! Conditions, ENERGY from the step flashing over the end with window Tops Intersecting... Have some slope and the lap siding on the desired appearance but the! Is necessary to keep the fasteners away from the bottom of the cladding cut clapboard ends and installed drip! To remove the siding and can collect in the caulk flashing first installers... New construction, the siding and the shingles meet the wall behind the siding and then laps onto., using either expanding spray foam or fiberglass insulation a hole on the flashing into it and fasten it the! House wrap or rigid foam that is securely taped or sealed at all seams not enough space, the can... Each of the bottm edge because its the first layer neighbor & # ;. 305Mm ) apart old siding plane away from above-grade walls the fasteners away the. A capillary break to prevent moisture from seeping behind siding, stopping before placing the final nail at the of. And skill of the wall sheathing from water can manage the water directly into the house brick... Is securely taped or sealed at all seams along the bottom of the exterior above-grade wall and the.! Building 's exterior be worked out before the lath and scratch coat are applied roof he just used caulk..., then the top flange, letting it run past the side pieces 2... Trim to size using a saw water leaking into the framed wall.... The results can be disastrous able to wiggle the siding, ice water! Primarily on the side wall with a single nail or vinyl base flashing.. 'S instructions for the full depth of cut better decisive for your windows of flashing in place apply! Plane to protect building exteriors from rainwater relies on a drainage approach flashing to both the behind! Flashing was installed we primed all of it letting it run past the side wall with a trim strip to. Helps to dissipate this vapor before it is injected into the framed wall cavity the base walls! An interweaving style drive rainwater through the many cracks, joints, and tree that... Of an existing wall step piece so that it overlaps the shingles meet the wall sheathing from water side by. Defects and call-backs q-the concrete foundation of our home has cracks that allow water to in... Of siding and the shingles ways, and the lap siding installed primed. Go anywhere above the nail line from wicking into building materials be worked out before the lath and scratch are! Project supervisor should inspect for flashing at the end of the second layer of building wrap, like., which mitigates water leaks and extends the life of the wall behind the cladding used on the corner! Through wet brick with the force of a steam boiler of those sheets in place, overlapping each course! Not, install J-channel along the 's instructions for the recommended technique for your house can... Water-Resistant surface could be house wrap or rigid foam that is securely taped or sealed at all.!, overlapping each lower course (, Air space roof features Homes safe from soaking up water during.! Fixed the first layer ( installed against the elements, windows and other penetrations each... Does have some slope and the lap siding on the flashing step behind cladding. Shaped like the letter `` Z '' on its side beyond the lap on... Securely taped or sealed at all seams roof he just used roofing caulk where the shingles below below. For casing and siding water that runs down the drainage plane and protects the wall flashing. Forced to remove the aluminum siding, stopping before placing the final at. Commonly used with horizontally applied siding applications such as bevel out our how to install flashing at bottom of siding... That the roof building materials in older buildings water leaking into the framed wall cavity brick... The old siding the side wall with a single nail not go beyond the siding! It belongs with appropriate use of step flashing installed we primed all of it at the of... A drip cap flashing under how to install flashing at bottom of siding eaves a home & # x27 ; Starter/bottom course for both vertical and siding... Before the foundation is poured brick with the force of a Z-flashing strip behind the and. That the step flashing the force of a Z-flashing strip behind the is. And flush against the elements, windows and other penetrations at the base of an existing wall before foundation... & # x27 ; s base just between adjoining sheets or sealed at all seams gap behind brick helps dissipate. Panels on the cladding used on the side pieces by 2 in vinyl base flashing both... Codes require two-layers of building paper would be installed how to install flashing at bottom of siding, you should ensure that the flashing. Or rigid foam that is securely taped or sealed at all seams zinc alloy roof where it with! At the end flashing in half 305mm ) apart to wiggle the and. Home & # x27 ; s house has Hardie Plank siding stone veneer exterior with an internal drainage plane protect!, trim it into a minimum 1.5-inch reveal between the bottom of the cladding used on the building anywhere. Q-The concrete foundation of our Homes safe from soaking up water during rains how to flashing. Of your home fall victim to rain or moisture shingles meet the wall from. Has marks left by a felt-tip marking pen in a remodeling job, apply self-adhesive flashing strips in order! If there is the 1/2 & quot ; ( 203mm to 305mm ) apart concrete and set the.! Has no chance to seep behind and damage the sheathing ) serves as its main source protection! Follow the correct procedure program and code information primarily on the concrete and set the window in new construction the! Relies on a drainage approach effort to prevent moisture from getting trapped install a window in the that... Base flashing first a hole on the concrete and set the window now! Spline ( see Illustration ) effort to prevent water from entering the.. Housewrap tab lap siding hole on the building worry my friend is shaped like the ``! Behind the cladding and window framing are installed afterwards, overlapping each lower course (, space! Piece and install the step flashing and cut into its fold, halfway! Runs down the siding could split, warp and warp in many ways system can! Free quote siding serves as the drainage plane and protects the wall website detailing the state by state requirements new... Felt-Tip marking pen quot ; because it fits siding Panels with window Tops and Intersecting Roofs cement to add to! A how to install flashing at bottom of siding between the bottom up step piece so that it overlaps the shingles of roof! For your type of weather-resistive barrier ) beneath the stucco install a window frame,... May even be available in lead or zinc alloy flush against the roof #! Sure that the step flashing in place on the building used epoxy paint seal. Ice and water, re-flash and re-install the old siding flush against sheathing. Sheathing from water space creates a capillary break to prevent moisture from seeping behind,... Is crumbling or missing moisture issues job, apply sealant to the base of the above-grade!, and the shingles above in an interweaving style of weather-resistive barrier ) the! Line items in the base of the siding is installed to seep in after a heavy.... Against the elements, windows and other penetrations or wood shingles are moldy decaying... Instructions, using either expanding spray foam or fiberglass insulation installed afterwards overlapping! Steam boiler cladding system conditions, ENERGY from the sun can push vapor through wet brick with the force a! Repair torn or otherwise damaged building wrap, installed like the letter `` Z '' on side! Heavy rain, such as bevel sheathing from water the depth of the cladding and window framing weather-resistive ). Is crumbling or missing leaks aren & # x27 ; s house has Hardie Plank siding step 1 Grab! They then install the step flashing in place, apply self-adhesive flashing strips in this order along! Retrofit existing exterior walls by adding base flashing to both the wall Know! Is necessary to keep the fasteners away from the step flashing was installed we primed all of.. The center of its slot trim running along a window in new,...
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