{"id":18415,"date":"2023-10-13T17:27:08","date_gmt":"2023-10-14T00:27:08","guid":{"rendered":"https:\/\/gregalder.com\/yardposts\/?p=18415"},"modified":"2023-10-13T17:27:10","modified_gmt":"2023-10-14T00:27:10","slug":"comparing-roof-materials-for-collecting-rain","status":"publish","type":"post","link":"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/","title":{"rendered":"Comparing roof materials for collecting rain"},"content":{"rendered":"\n<p>Which roofing material sheds the most and cleanest rain? Because if you&#8217;re collecting rain to use in your garden, then you want as much as possible and you don&#8217;t want it to be contaminated.<\/p>\n\n\n\n<p>I&#8217;ve lived in houses with roofs made of different materials &#8212; tile, asphalt shingle, metal &#8212; and I&#8217;ve collected rain from them all. So I have seen the differences in results firsthand. Let me share what I&#8217;ve noticed, as well as what some others have noticed.<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Most rain collected<\/strong><\/p>\n\n\n\n<p>1. Metal<\/p>\n\n\n\n<p>2. Asphalt shingle<\/p>\n\n\n\n<p>3. Tile<\/p>\n\n\n\n<p>Metal roofs shed the most, then asphalt shingle, and tile roofs shed the least, in my observations.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/metal-roof.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/metal-roof.jpg\" alt=\"\" class=\"wp-image-18421\" style=\"width:416px;height:312px\" srcset=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/metal-roof.jpg 1000w, https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/metal-roof-980x735.jpg 980w, https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/metal-roof-480x360.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1000px, 100vw\" \/><\/a><figcaption class=\"wp-element-caption\">Metal roof (Kynar-coated Galvalume steel).<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/asphalt-shingle-roof.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"549\" src=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/asphalt-shingle-roof.jpg\" alt=\"\" class=\"wp-image-18422\" style=\"width:448px;height:307px\" srcset=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/asphalt-shingle-roof.jpg 800w, https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/asphalt-shingle-roof-480x329.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 800px, 100vw\" \/><\/a><figcaption class=\"wp-element-caption\">Asphalt shingle roof.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/concrete-tile-roof.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"590\" src=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/concrete-tile-roof.jpg\" alt=\"\" class=\"wp-image-18424\" style=\"width:445px;height:375px\" srcset=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/concrete-tile-roof.jpg 700w, https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/concrete-tile-roof-480x405.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 700px, 100vw\" \/><\/a><figcaption class=\"wp-element-caption\">Concrete tile roof.<\/figcaption><\/figure>\n\n\n\n<p>Metal roofs shed the most because they don&#8217;t absorb some of the rainfall like the other surfaces do.<\/p>\n\n\n\n<p>Tile especially can absorb a surprising amount of rain when it is coming down very lightly. For a decade, I had concrete tile on my house but asphalt shingle on my workshop, and I noticed that during some very light rains only a few gallons were shed from the tile whereas nearly a hundred gallons came off the asphalt shingle roof of the workshop. This despite the roof of the workshop being far smaller.<\/p>\n\n\n\n<p>Just this year, we replaced our house&#8217;s tile roof with metal. This gave me a chance to compare metal with the asphalt shingle of the workshop. The metal sheds so well that it doesn&#8217;t even need rain! An average morning dew puts gallons into each downspout. For us in Southern California, this means that you&#8217;re getting free rainwater every May Gray, June Gloom, and other marine layer morning.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/fog-dripping-off-metal-roof.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"742\" src=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/fog-dripping-off-metal-roof.jpg\" alt=\"\" class=\"wp-image-18419\" style=\"width:358px;height:332px\" srcset=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/fog-dripping-off-metal-roof.jpg 800w, https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/fog-dripping-off-metal-roof-480x445.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 800px, 100vw\" \/><\/a><figcaption class=\"wp-element-caption\">Marine layer fog dripping off my metal roof earlier this week.<\/figcaption><\/figure>\n\n\n\n<p>The general order is clear: metal, then asphalt shingle, then tile. It&#8217;s hard to get more specific than that about how much each material sheds. I&#8217;ve read of runoff coefficients used to calculate how much rain will be shed by each type of roof, but they are not reliable because a lot depends on how much precipitation comes down in a given time (the precipitation rate). In a fog or mist, there is a large discrepancy. Metal is the only material that will shed. However, in a sudden downpour, all roofs shed almost the same amount.<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Cleanest rain collected<\/strong><\/p>\n\n\n\n<p>When ranking roof surfaces for shedding the cleanest rain, we can think of debris we can see and debris we can&#8217;t. Bits of roofing material erode as rainwater runs along it, and some of these bits are big, such as the granules that come off an asphalt shingle roof, while others are microscopic, such as lead or bacteria.<\/p>\n\n\n\n<p>I can rank roof surfaces in the first sense based on what I&#8217;ve seen eroded and collected in my gutters and rain tanks. In this sense, from cleanest to murkiest:<\/p>\n\n\n\n<p>1. Metal<\/p>\n\n\n\n<p>2. Tile<\/p>\n\n\n\n<p>3. Asphalt shingle<\/p>\n\n\n\n<p>From a metal roof, I only see leaves and dust and other things that have fallen on the roof get washed off with a rain. From a tile roof it is similar, except that on my roof if a section of tile was shaded then moss and other plants would actually grow in the spaces between tiles and bits were sometimes shed in a rain. From an asphalt shingle roof, I see mostly granules eroding. They collect in the gutters and in tank bottoms.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/granule-erosion-asphalt-shingle-roof.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"561\" src=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/granule-erosion-asphalt-shingle-roof.jpg\" alt=\"\" class=\"wp-image-18430\" style=\"width:385px;height:270px\" srcset=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/granule-erosion-asphalt-shingle-roof.jpg 800w, https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/granule-erosion-asphalt-shingle-roof-480x337.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 800px, 100vw\" \/><\/a><figcaption class=\"wp-element-caption\">Granules eroded from asphalt shingle roof, collected in gutter.<\/figcaption><\/figure>\n\n\n\n<p>As for the shedding and leaching of microscopic particles, I have to rely on studies done by others, and I&#8217;m only aware of one that is somewhat relevant. <a href=\"https:\/\/www.twdb.texas.gov\/innovativewater\/rainwater\/projects\/rainquality\/2011_02_rainquality_final_rpt.pdf\">&#8220;Effect of Roof Material on Water Quality for Rainwater Harvesting Systems&#8221;<\/a> was done by a group of researchers affiliated with the University of Texas, Austin in 2011.<\/p>\n\n\n\n<p>They tested rainwater coming off of six roof surfaces, including the most common ones of asphalt shingle, metal (Kynar-coated Galvalume), and concrete tile. They tested for &#8220;pH, conductivity, turbidity, total suspended solids (TSS), total coliform (TC), fecal coliform (FC), nitrate, nitrite, dissolved organic carbon (DOC), and selected metals.&#8221;<\/p>\n\n\n\n<p>In short, my reading of their data is that each of the three common roofing materials tested at slightly different levels in all categories, but not one was significantly cleaner than the others overall. Based on their data, I&#8217;d say all three of these roof materials are safe to collect water from to use on a food garden.<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Overall best roof material<\/strong><\/p>\n\n\n\n<p>If I were choosing a roof based solely on its ability to shed maximum volume and quality rainwater for use in a food garden, I would choose metal.<\/p>\n\n\n\n<p>Choosing tile sacrifices some volume whereas choosing asphalt shingle means dealing with the eroding granules. Using a first-flush diverter would help with keeping the granules out of a tank.<\/p>\n\n\n\n<p>Of course, none of us will choose a roof based solely on how well it can serve our food garden, but . . . more water and cleaner water sure is a nice thing to have.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/rain-coming-off-roof.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"692\" src=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/rain-coming-off-roof.jpg\" alt=\"\" class=\"wp-image-18449\" style=\"aspect-ratio:1.4450867052023122;width:414px;height:auto\" srcset=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/rain-coming-off-roof.jpg 1000w, https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/rain-coming-off-roof-980x678.jpg 980w, https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/rain-coming-off-roof-480x332.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1000px, 100vw\" \/><\/a><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>V is for Voluntary. I appreciate it when you choose to <a href=\"https:\/\/gregalder.com\/yardposts\/supporting-the-yard-posts\/\">support my work<\/a>. Thanks!<\/p>\n\n\n\n<p>All of my Yard Posts are listed <a href=\"https:\/\/gregalder.com\/yardposts\/list-of-yard-posts\/\">here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Which roofing material sheds the most and cleanest rain? Because if you&#8217;re collecting rain to use in your garden, then you want as much as possible and you don&#8217;t want it to be contaminated. I&#8217;ve lived in houses with roofs made of different materials &#8212; tile, asphalt shingle, metal &#8212; and I&#8217;ve collected rain from [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":18428,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[32,38],"tags":[10],"class_list":["post-18415","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-water-and-irrigation","category-weather-and-climate","tag-rainwater"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Comparing roof materials for collecting rain - Greg Alder&#039;s Yard Posts: Southern California food gardening<\/title>\n<meta name=\"description\" content=\"Which collects the most and cleanest rain? Tile, asphalt, or metal roofs? Here are my firsthand experiences.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Comparing roof materials for collecting rain - Greg Alder&#039;s Yard Posts: Southern California food gardening\" \/>\n<meta property=\"og:description\" content=\"Which collects the most and cleanest rain? Tile, asphalt, or metal roofs? Here are my firsthand experiences.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/\" \/>\n<meta property=\"og:site_name\" content=\"Greg Alder&#039;s Yard Posts: Southern California food gardening\" \/>\n<meta property=\"article:published_time\" content=\"2023-10-14T00:27:08+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-10-14T00:27:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/roof-rain-collection-Carpinteria-community-garden.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"703\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Greg Alder\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Greg Alder\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/\"},\"author\":{\"name\":\"Greg Alder\",\"@id\":\"https:\/\/gregalder.com\/yardposts\/#\/schema\/person\/7c17362732023b01ed23dc69d6fa703a\"},\"headline\":\"Comparing roof materials for collecting rain\",\"datePublished\":\"2023-10-14T00:27:08+00:00\",\"dateModified\":\"2023-10-14T00:27:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/\"},\"wordCount\":868,\"commentCount\":1,\"publisher\":{\"@id\":\"https:\/\/gregalder.com\/yardposts\/#\/schema\/person\/7c17362732023b01ed23dc69d6fa703a\"},\"image\":{\"@id\":\"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/roof-rain-collection-Carpinteria-community-garden.jpg\",\"keywords\":[\"rainwater\"],\"articleSection\":[\"Watering\",\"Weather\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/\",\"url\":\"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/\",\"name\":\"Comparing roof materials for collecting rain - Greg Alder&#039;s Yard Posts: Southern California food gardening\",\"isPartOf\":{\"@id\":\"https:\/\/gregalder.com\/yardposts\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/roof-rain-collection-Carpinteria-community-garden.jpg\",\"datePublished\":\"2023-10-14T00:27:08+00:00\",\"dateModified\":\"2023-10-14T00:27:10+00:00\",\"description\":\"Which collects the most and cleanest rain? Tile, asphalt, or metal roofs? Here are my firsthand experiences.\",\"breadcrumb\":{\"@id\":\"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/#primaryimage\",\"url\":\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/roof-rain-collection-Carpinteria-community-garden.jpg\",\"contentUrl\":\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/roof-rain-collection-Carpinteria-community-garden.jpg\",\"width\":1000,\"height\":703},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/gregalder.com\/yardposts\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Comparing roof materials for collecting rain\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/gregalder.com\/yardposts\/#website\",\"url\":\"https:\/\/gregalder.com\/yardposts\/\",\"name\":\"Greg Alder&#039;s Yard Posts: Southern California food gardening\",\"description\":\"Southern California food gardening\",\"publisher\":{\"@id\":\"https:\/\/gregalder.com\/yardposts\/#\/schema\/person\/7c17362732023b01ed23dc69d6fa703a\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/gregalder.com\/yardposts\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\/\/gregalder.com\/yardposts\/#\/schema\/person\/7c17362732023b01ed23dc69d6fa703a\",\"name\":\"Greg Alder\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/secure.gravatar.com\/avatar\/7ef6613d5043bdbb67157e2bfbbecb138148fad9c893cd424f6f14c5f7ff393e?s=96&d=mm&r=g\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/7ef6613d5043bdbb67157e2bfbbecb138148fad9c893cd424f6f14c5f7ff393e?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/7ef6613d5043bdbb67157e2bfbbecb138148fad9c893cd424f6f14c5f7ff393e?s=96&d=mm&r=g\",\"caption\":\"Greg Alder\"},\"logo\":{\"@id\":\"https:\/\/secure.gravatar.com\/avatar\/7ef6613d5043bdbb67157e2bfbbecb138148fad9c893cd424f6f14c5f7ff393e?s=96&d=mm&r=g\"},\"sameAs\":[\"http:\/\/gregalder.com\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Comparing roof materials for collecting rain - Greg Alder&#039;s Yard Posts: Southern California food gardening","description":"Which collects the most and cleanest rain? Tile, asphalt, or metal roofs? Here are my firsthand experiences.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/","og_locale":"en_US","og_type":"article","og_title":"Comparing roof materials for collecting rain - Greg Alder&#039;s Yard Posts: Southern California food gardening","og_description":"Which collects the most and cleanest rain? Tile, asphalt, or metal roofs? Here are my firsthand experiences.","og_url":"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/","og_site_name":"Greg Alder&#039;s Yard Posts: Southern California food gardening","article_published_time":"2023-10-14T00:27:08+00:00","article_modified_time":"2023-10-14T00:27:10+00:00","og_image":[{"width":1000,"height":703,"url":"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/roof-rain-collection-Carpinteria-community-garden.jpg","type":"image\/jpeg"}],"author":"Greg Alder","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Greg Alder","Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/#article","isPartOf":{"@id":"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/"},"author":{"name":"Greg Alder","@id":"https:\/\/gregalder.com\/yardposts\/#\/schema\/person\/7c17362732023b01ed23dc69d6fa703a"},"headline":"Comparing roof materials for collecting rain","datePublished":"2023-10-14T00:27:08+00:00","dateModified":"2023-10-14T00:27:10+00:00","mainEntityOfPage":{"@id":"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/"},"wordCount":868,"commentCount":1,"publisher":{"@id":"https:\/\/gregalder.com\/yardposts\/#\/schema\/person\/7c17362732023b01ed23dc69d6fa703a"},"image":{"@id":"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/#primaryimage"},"thumbnailUrl":"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/roof-rain-collection-Carpinteria-community-garden.jpg","keywords":["rainwater"],"articleSection":["Watering","Weather"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/","url":"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/","name":"Comparing roof materials for collecting rain - Greg Alder&#039;s Yard Posts: Southern California food gardening","isPartOf":{"@id":"https:\/\/gregalder.com\/yardposts\/#website"},"primaryImageOfPage":{"@id":"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/#primaryimage"},"image":{"@id":"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/#primaryimage"},"thumbnailUrl":"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/roof-rain-collection-Carpinteria-community-garden.jpg","datePublished":"2023-10-14T00:27:08+00:00","dateModified":"2023-10-14T00:27:10+00:00","description":"Which collects the most and cleanest rain? Tile, asphalt, or metal roofs? Here are my firsthand experiences.","breadcrumb":{"@id":"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/#primaryimage","url":"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/roof-rain-collection-Carpinteria-community-garden.jpg","contentUrl":"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/roof-rain-collection-Carpinteria-community-garden.jpg","width":1000,"height":703},{"@type":"BreadcrumbList","@id":"https:\/\/gregalder.com\/yardposts\/comparing-roof-materials-for-collecting-rain\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/gregalder.com\/yardposts\/"},{"@type":"ListItem","position":2,"name":"Comparing roof materials for collecting rain"}]},{"@type":"WebSite","@id":"https:\/\/gregalder.com\/yardposts\/#website","url":"https:\/\/gregalder.com\/yardposts\/","name":"Greg Alder&#039;s Yard Posts: Southern California food gardening","description":"Southern California food gardening","publisher":{"@id":"https:\/\/gregalder.com\/yardposts\/#\/schema\/person\/7c17362732023b01ed23dc69d6fa703a"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/gregalder.com\/yardposts\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/gregalder.com\/yardposts\/#\/schema\/person\/7c17362732023b01ed23dc69d6fa703a","name":"Greg Alder","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/7ef6613d5043bdbb67157e2bfbbecb138148fad9c893cd424f6f14c5f7ff393e?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/7ef6613d5043bdbb67157e2bfbbecb138148fad9c893cd424f6f14c5f7ff393e?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/7ef6613d5043bdbb67157e2bfbbecb138148fad9c893cd424f6f14c5f7ff393e?s=96&d=mm&r=g","caption":"Greg Alder"},"logo":{"@id":"https:\/\/secure.gravatar.com\/avatar\/7ef6613d5043bdbb67157e2bfbbecb138148fad9c893cd424f6f14c5f7ff393e?s=96&d=mm&r=g"},"sameAs":["http:\/\/gregalder.com"]}]}},"jetpack_featured_media_url":"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2023\/10\/roof-rain-collection-Carpinteria-community-garden.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/gregalder.com\/yardposts\/wp-json\/wp\/v2\/posts\/18415","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gregalder.com\/yardposts\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gregalder.com\/yardposts\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gregalder.com\/yardposts\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/gregalder.com\/yardposts\/wp-json\/wp\/v2\/comments?post=18415"}],"version-history":[{"count":25,"href":"https:\/\/gregalder.com\/yardposts\/wp-json\/wp\/v2\/posts\/18415\/revisions"}],"predecessor-version":[{"id":18451,"href":"https:\/\/gregalder.com\/yardposts\/wp-json\/wp\/v2\/posts\/18415\/revisions\/18451"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gregalder.com\/yardposts\/wp-json\/wp\/v2\/media\/18428"}],"wp:attachment":[{"href":"https:\/\/gregalder.com\/yardposts\/wp-json\/wp\/v2\/media?parent=18415"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gregalder.com\/yardposts\/wp-json\/wp\/v2\/categories?post=18415"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gregalder.com\/yardposts\/wp-json\/wp\/v2\/tags?post=18415"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}