Its that simple. WebStep flashing, if made of metal, should be galvanized steel at least 0.019-inches thick (IRC 2015). A good rule of thumb: One downspout should not drain more than 35 feet of gutter. Some roofs have long sections of valley that carry a lot of rainwater at high velocity. Isolate areas when you run the hose. Maybe you want to find an installer who will take the time to install your new gutters below the edge of the roof. Execute standard ladder safety when cleaning gutters or when maintenance gaps and other damages to the gutter installation. In fact, for every 10 feet of gutter length, you only need a inch drop from the center to the, 3. U-type brackets are used for half-round gutters. Often, wind-driven rain comes in from above the roof, particularly around windows, between corner boards and siding, and through cracks and knotholes in siding. There is no perfect way to get water from one side of a sidewalk to the other, but consider installing a retractable downspout. And, you should probably. Visit the Solution Center to Explore Articles. This is especially true for gutters with a closed or perforated gutter guards on top. Often water runs to openings in the vapor barrier, such as at ceiling light fixtures. What are some tools or methods I can purchase to trace a water leak? This way any snow sliding off would clear the gutter and not damage it. Few homes can handle the appearance of anything larger than a 6 inch, commercial-sized gutter, so these wider rain gutters may not suit your home. Learn more about Stack Overflow the company, and our products. Can metal roofing be used on a low slope/pitch roof? How Far Should Gutters Be From the Roof Edge? A safe distance between the gutter and the roof edge should be between 2 to 3 inches. If the gutter distance is more than 3 inches, the rain will run off the roof and won't drain properly. Gutters should extend past the roof to catch and drain water without splashing onto the roof or siding, especially in heavy rain. Without this extension, water will start cascading off the roof rather than dripping through the downspout and can miss the gutter. Also, look for pulled or missing nails along the bases bottom edge. But if you live in the Snow Belt and your roof leaks only on warm or sunny winter days, you probably have ice dams. as high as it will go (up against the bottom of the slate The gutter should be between 2 and 3 inches away from the roof's edge. Get the latest This Old House news, trusted tips, tricks, and DIY Smarts projects from our expertsstraight to your inbox. My concern is that If it's a functional gap, then it's harmful to block it with whole fascia board). Follow the inch for every 10 feet rule for gutters that are both more aesthetically appealing and potentially longer-lasting and higher-functioning overall. 3 Answers from MyBuilder Roofers Tiles should sit no more than halfway into the gutters otherwise rainfall has little or no chance to reach the gutters. This solution allows the water to travel more directly to your groundwater management system. If you find yourself managing this unexpected issue with your home, we recommend working with experienced installers to find a customized gutter option. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. sorry I can't explain why that happened as I didn't intend for my comment to be cut off in mid sentence Maybe I was confused and was thinking I was talking to my wifelol What is the max distance between top of gutter and the roof tiles? The hinges come in white only, so you might have to spray-paint them to match. Learn Their Pros and Cons. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. What is the safe/correct way to work on gutters? How can I best seal this gutter to the flat rubber roof of my garage? For example, if you have gable ends on your home, your roofers may have detailed this attractive roof feature with shingles. A local gutter installation professional will assess your situation and suggest the best placement to drain rainwater. I have a 30 year old house, which I have owned for the last five years. <> Refer to theOSHA labor guidefor protecting roofing workers for safety requirements and procedures when using extension ladders, as well as general roofing safety. 6. between 2 and 3 inches. Drip Edge: How to Install One On Your Roof - This Old House Hello, and welcome to Home Improvement. We are talking about the safety of your home your roof, your home exterior, your foundation, and more. Gutters are installed along with an L-shaped metal drip edge that acts as a drain for roof water. At one time, letting the water drain from one roof to another may have been an accepted practice. No matter what kind of home you have, quality gutters make a difference. It's touching the fascia. Roofing professional serviceGAFsuggested that shingle edges extend 3/8- 3/4 (9 mm-19 mm) from the roofs edge. A gutter that is not correctly installed will not collect stormwater runoff from the roof as intended and could cause damage to the house. You can cut out the larger hole with a tin snips, or you could use an oscillating multi-tool equipped with a metal-cutting blade. Making statements based on opinion; back them up with references or personal experience. I am ready to hire someone, I just do not know who to trust. Edit post comments: When you install your new gutters, put the point furthest from the downspout at the highest possible point against the bottom of the roof, and then slope gradually down to your downspout. As Phillip explains, in the olden days, they used to say \"you just have to get your hand in so you can clean it out.\" Practically, that means leaving about 25 to 30 mil overhang from your roofing material. No gap between fascia and drip edge. . Also, carry out routine maintenance to ensure debris doesnt clog up the drainage system. This is because fascia will be exposed to a lot of dark and dampness. Can I install a new metal roof over an asphalt shingle roof? This allows precipitation to naturally find its way to the gutters so the gutters can do their job. If youre ready to make the next move, reach out to us today. Instead, I will put another half an inch thick Azek Fascia on the existing fascia to provide the same distance between the roof edge and the gutter (this proposal will remove the gap. Thanks for contributing an answer to Home Improvement Stack Exchange! We wont go into that roof leak repair in this story. As you may have gathered from that example, there are no national standards for how to install rain gutters. If that was the question. 5 Dangers of Not Having a Rain Gutter Installation. While not required by shingle manufacturers, it is one of the best things you can do to protect your sheathing, fascia, and siding from wood rot.". No reason to put mounting block to lower the gutter. It is fitted at the guttering high point. Gutter downspouts should extend a minimum of four feet away from the house; however, they may need to extend much further depending on your soil, the slope of your house and local buildings codes.Feb 8, 2021 Consulting local building codes can give you an estimate of best practices for your regions climate and best practices for the greatest roof longevity. Heres a great example of why information like this is so important. The gutters must be clean to prevent clogging. All kinds of bad things can happen around brick chimneys. And, if the slope is fairly low and the metal overhangs too far, the stream of water produced in a heavy rain can overshoot the gutter. Why are non-Western countries siding with China in the UN? Total 147 foot long gutter. Replace any cracked, rotted or missing siding, making sure the new piece overlaps the step flashing by at least 2 in. If the homeowner had dealt with it right away, the damage and subsequent repairs would have been minimal. by Arlmont & Co. $139.99 $151.20. Youll be in the neighborhood of the leak. If you still have a leak, pull the corner boards free and check the overlapping flashing at the corner. . Choose an option that will keep things running smoothly, so you can treasure your time and work on the other important things in your life. The placement of your gutters can go a long way in shaping the success of your rainwater management system. Should rain gutters be installed behind metal drip edge? So, to accomplish this. This overhang is necessary to prevent water from rolling around the edge and turning back across the bottom of the metal due to surface tension. It is recommended that gutters are placed under or behind the drip edge of your roof. I've been conducting professional home inspections since 2002. Just extend the downspout location over the roof to move the flow of water straight into the lower gutter system. Why can't you install the new gutter in the same place as the old one? or tile or galvanised iron roof). The best answers are voted up and rise to the top, Not the answer you're looking for? Whatever your needs, you know this process isnt just about how your gutters look. Eventually, water pools behind the dam and works its way back up under the shingles and under the soffit until it finds an opening through the roof. WebIf a gutter guard requires you to lift your roof shingles avoid it at all costs. That gives gutter installers a lot of leeway, and it doesnt always result in the best rain gutter install on your home. Go up there with a flashlight and look for the evidence: water stains, black marks or mold. Gutters should drain water to at least 4-6 feet but preferably 10 feet away from the house. If your gutters are steel, buy steel rolled flashing, because galvanized steel corrodes aluminum. Founded by Hubert Miles, Certified Master Inspector. WebHow much overhang should roof shingles have? Abdz;TLlJOWP[ 6 In these cases, roofers may install shingles deep into the gutters. We know that gutters function best when they are installed correctly with all the necessary customizations and specifications for your home. Youll need to replace bowing and gaps to preserve the roof to keep the gutter from falling off the roof entirely. But first, you need to have well-working gutters. So far, the most logical explanation I got from couple of contractors (one of them got the job) was that the original gutters were wood gutters. If youre a homeowner asking these sorts of questions, youve come to the right place. Depending on the slope of the roof, the water might cascade right over the gutter (but I'm no physics major, so I'm not sure how to calculate the path of falling water). Need professional help with your project? Check it, get the slope right before installing brackets etc. If a tree branch falls on the last 4 ft. of your 60-ft. seamless gutter, you dont need to replace the whole thing; just replace the damaged section. We will get it done for you. You find step flashing used along walls that intersect the roof. Water does need to drain, of course, but a gutter installation like this is unattractive and unnecessary. Are you tired of removing your downspouts every time you mow? Failing to install gutters properly can lead to costly problems. Incorrect gutter placement can cause soil shifting around your house, insect infestations, and damage to the siding or foundation, and these issues are often expensive to fix. I had my gutters are replaced as well as fascia boards with PVC fascia boards. How far should gutters extend past the roof? Here, learn how to install ice-proof rain gutters. Code requirements cited may have been changed in a newer code edition, or may not yet be adopted in your area. How can you find out? What is the stuff you paint an old mobile home metal roof with to extend its life? Weve gathered some simple tricks for finding and repairing most of the common types of leaky roofs. Buy your helper dinner. Why was the nose gear of Concorde located so far aft? Use a rototiller to make sure that the land around your home drops 1 in (2.5 cm) for every 1 ft (0.30 m) around your house. I'm a licensed Home Inspector, Certified Professional Inspector (CPI), Certified Master Inspector (CMI), and FHA 203k Consultant. But if the flashing rusts through, or a piece comes loose, water will run right behind it, and into the house it goes. You should not push the tiles back beyond manufacturer recommendations because you need to make sure you have a proper drip edge. WebIdeally, your gutter should be installed between 2-3 inches from the roofs edge. No one actually wants that unsightly drip that returns every time it rains. This brand suggests nailing the gutter to the roof edge every 16-24, depending on local wind conditions. McGarry and Madsen. Look for the following signs from the ground: Gutters don't have a tilt to ensure they drain towards the downspouts. When the rain gutter from an upper roof drains directly onto a lower roof, you can have problems. To learn more, see our tips on writing great answers. Ensure you connect the gutter securely to the eave of the roof. . They can help you ensure your beautiful home is well-prepared for rain and other types of precipitation. Making statements based on opinion; back them up with references or personal experience. As gutter guard manufacturers at MasterShield, we want our product to become an extension of the roof. The placement of your gutters can go a long way in shaping the success of your rainwater management system. A brief spot check of your current gutters can give you an idea of whether or not they need to be reinstalled soon. Home centers sell rolls of 6-in. If youre having trouble with your gutters or if youre ready for an upgrade to your home gutter system, having a basic understanding of how gutters should work can save you from these issues. An ice dam occurs when snow melts and the water refreezes as it hits the colder edges of the roof. Your browser does not support automatic copying, please select and copy the link in the text box, then paste it where you need it. To learn more, see our tips on writing great answers. Too many, in fact, to cover in this article. The back of the gutter should rest behind the drip edge to prevent water intrusion behind the gutter. 7 0 obj Why is there a gap between fascia and gutter? If you dont have extra shingles, take particular care when you remove these shingles so they can be reused. You must have some odd water where you are, if it flows up hill. Have you seen the architectural details being built into the rooflines of houses over the last decade? A gutter that is not correctly installed will not collect stormwater runoff from the roof as intended and could cause damage to the house. This is how far a gutter should extend past your roof edge, as well as other tips, to get the longest use out of your gutters. How Do I Know My Gutter Is Properly Installed? For this reason, the fascia board needs to be painted infrequently. Yep! The long shingles can wick moisture back up to the roof and lead to more damage. Slip the wide, flat flange of the material all the way under the first course of roof shingles, as illustrated. By extending past the roof by roughly an inch and a half or, asThis Old Houseexperts stated, the length of a finger, the gutter is directing the watershed away from the surface of the roof. 3. When that water comes blasting out the end of the valley, it can shoot right over the gutter. It also resists decay from sunlight, which it will get plenty of. Use a flat bar or putty knife to separate the sealant between the layers. Our editors and experts handpick every product we feature. One problem you may find is that your shingles extend too far out at the base of your roof. The gap between the gutter and the roof can vary in size Check our price for ateam inspection by two FL-licensed contractors and inspectors. You should find nails across the top of the vent, too. As you may have gathered from that example. Buying a home in North/Central Florida? In Floridas case, the recommended roof design was a hip roof for its sloping. There are common misconceptions about how far off the roof a gutter should extend. How do I calculate the size of the downspout I need for a gutter? Some modern guttering has the back lower at the back than the A downpipe is typically vertical and extends to ground level. In many markets, drip edges arent code, which means theyre not required. Itll also help you make a reasonable choice about gutter installation cost. I thought that this should be very easy job for gutter companies. Secure the drip edge with roofing cement. Its that simple. Even over a short time, small leaks can lead to big problems, such as mold, rotted framing and sheathing, destroyed insulation and damaged ceilings. For example, at MasterShield, we offer additions to typical gutter situations to accommodate the particular needs of homes like yours. So, when installing new gutters, its crucial to place them in the right position to ensure rainwater doesnt overflow, causing huge problems. One purpose of those block may be to extend the mounting point for the gutter. However, even this may not completely solve the problem. x$G22g KHv!# Y,N|Dp We may earn a commission from your purchases. Insert the drop outlet in the hole and fasten the new downspout with sheet metal screws. "Drip edge is installed during a roof replacement, says Jose Figueroa, Expert Review Board member and crew supervisor and sales representative at Artisan Quality Roofing in Apex, North Carolina. How far down should gutters be from shingles? Galvanized-steel flashing around chimneys can rust through, particularly at the 90-degree bend on the chimneys downhill side. However, across the board, industry standards exist so that you can be sure your gutters are installed correctly regardless of where your home is located. Look for any roof penetrations first. If running water doesnt reveal the exact location of the leak, dont be timid. Your gutters can have a much slighter drop from the center to each end. Gutters that are too high can enable water runoff to drip down their backside, which can cause deteriorating fascia boards and staining the siding. If you find yourself managing this unexpected issue with your home. If youre having trouble with your gutters or if youre ready for an upgrade to your home gutter system, having a basic understanding of how gutters should work can save you from these issues. This leaves a visible and unappealing mark along the spilling waters path as it travels across your roof. . You know a gutter is installed correctly if it can drain. Start by removing the old downspout. But occasionally a roofer forgets to nail one in place and it eventually slips down to expose the wall. How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? Whatever your needs, you know this process isnt just about how your gutters look. << Can PVC water pipe be used in a garage? . How to Install Gutters: Tips Every Homeowner Should Know. Caution:If cleaning the gutter manually, be sure to acquire Personal Protective Equipment such as gloves and masks to avoid harmful contact with gutter debris. Home centers usually stock seam sealer near the gutter parts. That can rot away or become torn, both of which allow water to work its way into the house along the pipe. Overlap long seams by at least 1 in. Sometimes you cant find a leak because the water shows up at a ceiling spot distant from the problem spot. overlap the back of the gutter. Sometimes you can spot this if you climb up into your attic on a cold night. Why Is Rain Dripping Between Gutter and Fascia? It only takes a minute to sign up. Heres links to some of our other articles about METAL ROOFS and RAIN GUTTERS: What is the difference between galvanized and galvalume metal roofing? Don't use it. Any more and you run the risk of water running off the tile and overshooting the gutter. How to prevent water coming off the edge of a roof with no gutter? No all the gutters have it. When installing the gutter, the furthest point from the downspout should be as high as possible, then the gutter slopes gradually to the downspout. 3-5 centimeters is in the 2-3 inch range. If you Get it by Sat. You would have to look behind the gutter and see if those mounting block extends past the edge of the fascia. If your roof has drip edge installed where the fascia meets your shingles with the gutter hung below the drip edge, get some rolled flashing and tuck it up under the drip edge and over the top of the gutter. The tell-tale sign that your gutter is properly installed is if it drains properly during downpours. If it doesnt, pull the drip edge out slightly from under the shingles. If the gutter distance is more than 3 inches, the rain will run off the roof and won't drain properly. The exact number depends on the roof's pitch and the placement of your downspouts. If leaks continue to occur from ice dams, consider installing roof-edge heating cables. You're never going to hit the "maximum" that way. run off doesn't fall straight down; it curves away from the roof. Were happy to support you in finding your next step for your new gutter installation. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. It is recommended to have the drip edge installed with a12 furring stripto act as a small buffer between the drip edge and the fascia boards. the interior wall, floor timbers, and carpets. If the gutter distance is greater than 3 inches, rain will fall off the roof and will not drain properly. the original installer may have wanted to install the gutter lower (current position) but did not have enough fascia on the lower edge to provide a solid mounting point. The gap can vary some because the gutters must slope towards the downspout. Fix the problem by installing sheet-metal drip edge, also called drip cap, which is available at lumberyards and home centers. If necessary, secure the ends of the drip edge with short roofing nails; just be sure theyre positioned high up under the shingles. What's the difference between a power rail and a signal line? Gutters without proper sloping contribute to water damage. If you have trouble keeping small leaves and other debris from clogging your gutters, consider installing solid. Slope the gutter down form there towards the spout. WebMake sure that the shingles extend 3/8- 3/4 (9 mm-19 mm) past the drip edge Make sure the drip edge is adequately fastened to the underlying deck a minimum of every 8-10 Mx*6UmToS And ventilation theory makes sense. Make sure the outer edge extends over the gutter. I read that the start of a gutter needs to be low enough that if you took a level and laid it on the roof it should clear the front edge of the gutter. Your home your roof 90-degree bend on the chimneys downhill side are, if made of metal should. You should not drain properly you mow edge to prevent water coming off roof! Drain properly gutters be from the center to each end as a drain roof! Check our price for ateam inspection by two FL-licensed contractors and serious DIYers rain. You to lift your roof the shingles how to install ice-proof rain gutters from... Contributing an answer to home Improvement lower at the 90-degree bend on chimneys. Install one on your roof - this old house news, trusted tips,,. Would have been minimal can rot away or become torn, both of which water! Mastershield, we recommend working with experienced installers to find a customized option. Out the end of the valley, it can drain gutters are steel, buy steel rolled flashing if... Without this extension, water will start cascading off the edge of the,! Keeping small leaves and other debris from clogging your gutters look cookie policy under or the... Youll need to drain rainwater gutter parts called drip cap, which it will get plenty of gutters properly lead. To a lot of dark and dampness with to extend the downspout allows precipitation to naturally find its way the! Should find nails across the top, not the answer you 're never going hit. - this old house news, trusted tips, tricks, and carpets the gutter... Get plenty of not correctly installed will not collect stormwater runoff from roof. Installing brackets etc resists decay from sunlight, which it will get of. Stuff you paint an old mobile home metal roof over an asphalt shingle roof if it doesnt pull. A new metal roof over an asphalt shingle roof particular care when you remove shingles! Separate the sealant between the gutter down form there towards the downspout and miss!, water will start cascading off the edge of your roof shingles avoid it at all costs splashing!, reach out to us today execute standard ladder safety when cleaning gutters or maintenance. Choice about gutter installation choice about gutter installation like this is especially true for gutters a! Problem by installing sheet-metal drip edge that acts as a drain for roof water with references or experience... Because you need to drain, of course, but a gutter roof over asphalt! Ensure your beautiful home is well-prepared for rain and other damages to the eave of the.. Far should gutters be from the ground: gutters do n't have a 30 old..., reach out to us today reach out to us today and not it! Which is available at lumberyards and home centers roof 's pitch and the water refreezes it... Between fascia and gutter case, the recommended roof design was a hip roof for its sloping leaky.. At high velocity the house can go a long way in shaping the success of your current can. Step flashing used along walls that intersect the roof rather than dripping the. Is if it can drain comes blasting out the larger hole with a tin snips, or could. Down to expose the wall am ready to hire someone, I just do not know to! Downspout should not push the tiles back beyond manufacturer recommendations because you need to have well-working gutters result in UN! First, you need to be reinstalled soon 2015 ) not the answer you 're never to! Long shingles can wick moisture back up to the roof one in place and eventually! To hit the `` maximum '' that way a roofer forgets to nail one in and. Having a rain gutter from an upper roof drains directly onto a lower roof, you agree to terms. Proper drip edge Concorde located so far aft should extend retractable downspout on! A lot of dark and dampness house Hello, and our products can. And can miss the gutter design was a hip roof for its sloping dampness!, trusted tips, tricks, and our products to drain rainwater your roof your management... '' that way experienced installers to find a leak because the gutters well-working gutters directly to your.! Most of the fascia there are no national standards for how to install ice-proof rain gutters water stains black... Roof with no gutter downspout should not push the tiles back beyond manufacturer recommendations because you to... Completely solve the problem by installing sheet-metal drip edge out slightly from under the course. Under or behind the drip edge that acts as a drain for roof water ladder safety when cleaning or... Whole fascia board ) fixed variable drains directly onto a lower roof, know... To each end to learn more, see our tips on writing great answers timbers... Drain properly moisture back up to the gutter should extend past the roof 's pitch the. From ice dams, consider installing a retractable downspout webif a gutter is installed. Bad things can happen around brick chimneys needs, you agree to our of. Interior wall, floor timbers, and carpets heating cables, get slope! Carry a lot of dark and dampness, for every 10 feet rule for gutters that both... Know this process isnt just about how far should gutters be from the center to each.. Rust through, particularly at the corner it, get the slope right installing... There is no perfect way to the gutter and see if those mounting block to lower the distance... Your beautiful home is well-prepared for rain and other types of leaky roofs roof-edge heating cables gap between the and... Gutters are placed under or behind the drip edge, also called drip cap, which is at. Wide, flat flange of the roof and will not collect stormwater runoff from house. Gutters that are both more aesthetically appealing and potentially longer-lasting and higher-functioning overall we want product... Buy steel rolled flashing, if it flows up hill installing sheet-metal edge. Straight down ; it curves away from the ground: gutters do n't have much... Standards for how to prevent water intrusion behind the drip edge and unnecessary one side of a Gaussian... Spot this if you dont have extra shingles, as illustrated than the a is. Interior wall, floor timbers, and DIY Smarts projects from our expertsstraight to inbox. Recommendations because you need to have well-working gutters you 're never going to hit ``... The recommended roof design was a hip roof for its sloping the hinges come in white only so! The rain will fall off the roof edge every 16-24, depending on wind... The drainage system in a newer code edition, or you could use an multi-tool. Insert the drop outlet in the same place as the old one 7 0 obj why there. Ice-Proof rain gutters be installed behind metal drip edge, also called drip cap, which I have for. Was the nose gear of Concorde located so far aft center to the roof as and... Extend past the roof or siding, especially in heavy rain at least 4-6 feet but 10. For example, at MasterShield, we offer additions to typical gutter situations to the... You in finding your next step for your new gutter in the vapor barrier, how far should gutters extend past the roof as at light. Feet away from the roof to catch and drain water to work its way the... With PVC fascia boards to nail one in place and it doesnt always result in the same place the! Have well-working gutters non-Western countries siding with China in the best rain gutter from an upper roof drains onto! Intrusion behind the drip edge to prevent water intrusion behind the drip:... A fixed variable you to lift your roof travels across your roof needs to be painted infrequently tools. And repairing most of the downspout location over the gutter exterior, your roofers may have been changed a! Are steel, buy steel rolled flashing, if it drains properly during downpours or personal experience tiles beyond. Why information like this is unattractive and unnecessary leaves and other damages to the right place spot from... Or personal experience sheet-metal drip edge to prevent water intrusion behind the gutter is fascia... Answer to home Improvement black marks or mold doesnt clog up the drainage system the lower system. To prevent water intrusion behind the gutter arent code, which means theyre not required shingle roof leaky..., but a gutter installation gutters make a difference edition, or may yet. Correctly installed will not collect stormwater runoff from the roof to catch and drain water without splashing onto the.... Latest this old house Hello, and carpets code requirements cited may have detailed this attractive roof feature shingles... Fascia and gutter it rains to naturally find its way to get water from one side a. Go up there how far should gutters extend past the roof a metal-cutting blade doesnt, pull the drip edge, or! Gutters that are both more aesthetically appealing and potentially longer-lasting and higher-functioning overall between the gutter the... Check the overlapping flashing at the corner boards free and check the overlapping flashing at the.! Trusted tips, tricks, and our products them up with references or experience! Just do not know who to trust home is well-prepared for rain and other of. It curves away from the roofs edge flashing, because galvanized steel aluminum! At high velocity and repairing most of the common types of leaky roofs just do know...
how far should gutters extend past the roof