{"id":98537,"date":"2022-05-18T08:00:54","date_gmt":"2022-05-18T13:00:54","guid":{"rendered":"https:\/\/www.solarpowerworldonline.com\/?p=98537"},"modified":"2022-11-15T14:07:51","modified_gmt":"2022-11-15T19:07:51","slug":"solar-spotlight-waterproofing-solar-projects-on-tile-rooftops","status":"publish","type":"post","link":"https:\/\/www.solarpowerworldonline.com\/2022\/05\/solar-spotlight-waterproofing-solar-projects-on-tile-rooftops\/","title":{"rendered":"Solar Spotlight: Waterproofing solar projects on tile rooftops"},"content":{"rendered":"<p>In this special edition of <em>Contractor\u2019s Corner<\/em>, mounting manufacturer <a href=\"https:\/\/k2-systems.com\/en\/\">K2 Systems<\/a> dispels the myth of \u201cflashing-free\u201d solar rooftop mounts and covers the latest in installing solar on tile roofs. K2 Systems is a global mounting provider, and Johan Alfsen, senior director of training, talks through the company\u2019s latest innovation in flashing technology \u2014 butyl.<\/p>\n<p>Below is a portion of the company\u2019s <em>Solar Spotlight<\/em> podcast with Solar Power World, but be sure to listen to the full episode here or on your favorite podcast app.<\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/w.soundcloud.com\/player\/?url=https%3A\/\/api.soundcloud.com\/tracks\/1266338917%3Fsecret_token%3Ds-YuyzgXiWG3H&amp;color=%23ff5500&amp;auto_play=false&amp;hide_related=true&amp;show_comments=false&amp;show_user=true&amp;show_reposts=false&amp;show_teaser=false\" width=\"100%\" height=\"166\" frameborder=\"no\" scrolling=\"no\"><\/iframe><\/p>\n<div style=\"font-size: 10px; color: #cccccc; line-break: anywhere; word-break: normal; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; font-family: Interstate,Lucida Grande,Lucida Sans Unicode,Lucida Sans,Garuda,Verdana,Tahoma,sans-serif; font-weight: 100;\"><a style=\"color: #cccccc; text-decoration: none;\" title=\"Contractor's Corner by Solar Power World\" href=\"https:\/\/soundcloud.com\/solarpowerworld\" target=\"_blank\" rel=\"noopener\">Contractor&#8217;s Corner by Solar Power World<\/a> \u00b7 <a style=\"color: #cccccc; text-decoration: none;\" title=\"Solar Spotlight: Waterproofing solar projects on tile rooftops\" href=\"https:\/\/soundcloud.com\/solarpowerworld\/solar-spotlight-waterproofing-solar-projects-on-tile-rooftops\/s-YuyzgXiWG3H\" target=\"_blank\" rel=\"noopener\">Solar Spotlight: Waterproofing solar projects on tile rooftops<\/a><\/div>\n<h3>What\u2019s required to waterproof tile roofs?<\/h3>\n<p>There\u2019s actually a little bit of confusion on this question and answer because different jurisdictions have different requirements based on what\u2019s called, I\u2019d say, \u201cbest practices\u201d listed by organizations like the Tile Roofing Institute. The reason why I say it\u2019s kind of confusing is because not all AHJs will mandate this. They\u2019re O.K. with just sealant over bolts, which is the bare minimum. But some installers take it upon themselves to do it the most thorough way, or doing what\u2019s called three coursing with roofing cement, where they tar in around a metal flashing to flash that in at the underlayment level and they add a layer of mesh and another layer of tar. So, it\u2019s extremely time-consuming, and I can understand why some installers don\u2019t want to do it or are begging for better ways, but not all jurisdictions mandate this.<\/p>\n<h3>How is installation on tile roofs different than others like comp shingle?<\/h3>\n<p>Tile roofs are a little more complicated because they have two waterproofing systems of the roof. Technically, comp shingle roofs have underlayment as well underneath the asphalt shingles, but you\u2019re not coming anywhere near it. You\u2019re penetrating through it, but you\u2019re not reinforcing that waterproofing, it\u2019s just another layer under the singles. Whereas with tiles, there\u2019s a big gap between the felt paper underlayment and the tile. So, the heart of a tile roofing system is at the underlayment level, whereas on comp shingle, as long as you waterproof on the surface level, you\u2019re good to go. But tile has a little bit more complexity to it because it has the underlayment that is a little more fragile but also a very important part of the roof, and then you have the top tile level as well.<\/p>\n<h3>What are \u201cflash-less\u201d roof attachments?<\/h3>\n<p>the word \u201cflash-less\u201d is actually the wrong word to use that the industry is adopting with these flash-less products. What they\u2019re referring to is these comp shingle roof mounting systems \u2014 for example, our Splice Foot \u2014 it\u2019s a product that doesn\u2019t have a metal flashing, it has a butyl flashing. And the reason why I say flash-less is the wrong term to use is because these products do have a flashing but they\u2019re in a different form. Some of them call it a flexible flashing, some call it a pad flashing. It just depends on the product.<\/p>\n<h3>What is the benefit of using butyl vs. metal flashings?<\/h3>\n<p>In the case of comp shingle, a metal flashing is designed to be slipped between the shingle coursing, and in some cases where the shingles are so hot or so baked down, like in really hot climates like Las Vegas or Arizona where it gets over 100\u00b0F and the roof just gets so cooked that you can\u2019t pry a metal flashing between the shingles and you end up tearing up the shingles and causing more harm than good.<\/p>\n<p>A flexible flashing or butyl flashing ends up being a better solution because you can stick it right down on top and it self-seals itself as you drive the screws through the butyl. It\u2019s just an easier install, and it\u2019s obviously regionally based, or installer based, with what they prefer. It has a lot of benefits and we do some videos as a comparison between metal flashings and non-metal flashings.<\/p>\n<h3>What products does K2 offer for tile mounting?<\/h3>\n<p>we always had tile hooks, we have all kinds of different tile hooks series for the different types of tiles, like flat tile or \u201cS\u201d tile or \u201cW\u201d tile. But we recently incorporated the same butyl that\u2019s a part of our Splice Foot. We call that seal the EverSeal. That means the product has been tested thoroughly for water intrusion, wind-driven rain, submersion tests and heat and thaw. It\u2019s getting put onto our tile hook series, so now we\u2019re having tile hooks with butyl and what is going to provide is a much easier solution for installers who do want to seal the penetrations into the tile roof into the underlayment, and not want to bring up big buckets of tar and do the three coursing. They can use the butyl that self-seals into the roof. Our new hooks will be available with butyl as a part of the EverSeal series.<\/p>\n<p style=\"text-align: center;\"><em>This podcast is sponsored by K2 Systems<\/em><\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-98538 size-thumbnail\" src=\"https:\/\/www.solarpowerworldonline.com\/wp-content\/uploads\/2022\/05\/logo_512x512-150x150.png\" alt=\"\" width=\"150\" height=\"150\" srcset=\"https:\/\/www.solarpowerworldonline.com\/wp-content\/uploads\/2022\/05\/logo_512x512-150x150.png 150w, https:\/\/www.solarpowerworldonline.com\/wp-content\/uploads\/2022\/05\/logo_512x512-500x500.png 500w, https:\/\/www.solarpowerworldonline.com\/wp-content\/uploads\/2022\/05\/logo_512x512-238x238.png 238w, https:\/\/www.solarpowerworldonline.com\/wp-content\/uploads\/2022\/05\/logo_512x512.png 512w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In this special edition of Contractor\u2019s Corner, mounting manufacturer K2 Systems dispels the myth of \u201cflashing-free\u201d solar rooftop mounts and covers the latest in installing solar on tile roofs. K2 Systems is a global mounting provider, and Johan Alfsen, senior director of training, talks through the company\u2019s latest innovation in flashing technology \u2014 butyl. Below&hellip;<\/p>\n","protected":false},"author":19854,"featured_media":98539,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":""},"categories":[640,3004,3009,5117,1713,1690,5118,3011],"tags":[3386,5152],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Solar Spotlight: Waterproofing solar projects on tile rooftops<\/title>\n<meta name=\"description\" content=\"In this special edition of Contractor\u2019s Corner, mounting manufacturer K2 Systems dispels the myth of \u201cflashing-free\u201d solar rooftop mounts and covers the\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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