{"id":7943,"date":"2026-07-24T11:44:49","date_gmt":"2026-07-24T08:44:49","guid":{"rendered":"https:\/\/axinar.com\/?p=7943"},"modified":"2026-07-24T11:44:49","modified_gmt":"2026-07-24T08:44:49","slug":"pv-mounts-tile-roof-vs-flat-roof","status":"publish","type":"post","link":"https:\/\/axinar.com\/en\/blog\/pv-mounts-tile-roof-vs-flat-roof","title":{"rendered":"PV Mounts on Tile Roof vs Flat Roof: Selection Guide"},"content":{"rendered":"<p>Selecting the right PV mounting system is the first technical question of every installation. The answer depends on roof type, <strong>inclined tile roof, industrial metal roof, or flat roof<\/strong>, and solutions differ significantly between them. In practice, wrong selection means either double the cost, or roof waterproofing problems in 3\u20135 years.<\/p>\n<h2>Tile Roof (Inclined Roof with Tiles)<\/h2>\n<p>The most common residential roof type in Greece. The main issue here is <strong>fixing without damaging tile waterproofing<\/strong>. The basic technique is fixing to standard wooden rafters with special anchors that &#8220;pass&#8221; between the tiles.<\/p>\n<h3>AXINAR Tile Roof System<\/h3>\n<p>Special system with roof hooks that fix to tiles without perforation. Hooks come down to the rafter and support horizontal rails where PVs are screwed. Base version uses:<\/p>\n<ul>\n<li><strong>Steel:<\/strong> S320GD galvanized (25+ years durability)<\/li>\n<li><strong>Roof hooks:<\/strong> Adjustable for various tile profiles (Roman, Marseille, Byzantine)<\/li>\n<li><strong>Rails:<\/strong> Anodized aluminum or galvanized steel<\/li>\n<li><strong>Advantage:<\/strong> Minimal roof perforation, zero leak risk<\/li>\n<\/ul>\n<h2>Industrial Metal Roof (Sheet Panels)<\/h2>\n<p>Industrial roofs from trapezoidal sheet or sandwich panels have different techniques. Instead of hooks, <strong>clamps or industrial screws are used that fix directly to the ridged points<\/strong> of the sheet:<\/p>\n<ul>\n<li><strong>Threaded rods:<\/strong> Special screws pulling the panel onto the ridge<\/li>\n<li><strong>Standing Seam Clamps:<\/strong> For standing seam roofs, no perforation<\/li>\n<li><strong>Bolted \/ Hook:<\/strong> Combination for specific geometries<\/li>\n<\/ul>\n<p>AXINAR provides <strong>Axisol R (Industrial Roof)<\/strong> for these applications, S320GD steel, 25+ years galvanic durability, proven in industrial installations.<\/p>\n<h2>Flat Roof<\/h2>\n<p>Flat roof is <em>seemingly<\/em> easier, no tiles to worry about, but has its own rules. Two main approaches:<\/p>\n<h3>1. Ballast (No Perforation)<\/h3>\n<p>The mount is supported with concrete or granite weights, no hole in the waterproofing membrane. AXINAR&#8217;s <strong>Axisol Roolf<\/strong> is a ballasted system made of anodized aluminum:<\/p>\n<ul>\n<li><strong>No perforation:<\/strong> Doesn&#8217;t touch waterproofing<\/li>\n<li><strong>Ballast loading:<\/strong> Weight holds the system (typically 100\u2013150 kg\/kW)<\/li>\n<li><strong>Installation speed:<\/strong> Very fast, modular elements<\/li>\n<li><strong>Ideal for:<\/strong> New homes, commercial buildings with membrane<\/li>\n<\/ul>\n<h3>2. Bolted to Concrete<\/h3>\n<p>If the flat roof is bare concrete (no membrane) or perforation is fine, we can use <strong>Terrasol 1V or Terrasol 2V<\/strong>:<\/p>\n<ul>\n<li><strong>Terrasol 1V:<\/strong> One row of panels per rail, for common orientations (south) with larger tilt<\/li>\n<li><strong>Terrasol 2V:<\/strong> Two rows of panels per rail, compact design for maximum density on small roofs<\/li>\n<li><strong>Material:<\/strong> Galvanized steel, Greek manufacture<\/li>\n<li><strong>Adjustable tilt:<\/strong> Allows adjustment to optimal angle for the area<\/li>\n<\/ul>\n<h2>Selection Table<\/h2>\n<table>\n<thead>\n<tr>\n<th>Roof Type<\/th>\n<th>AXINAR System<\/th>\n<th>Advantages<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Tile Roof<\/td>\n<td>Tile Roof<\/td>\n<td>Zero perforation, adjustable hooks<\/td>\n<\/tr>\n<tr>\n<td>Industrial Metal<\/td>\n<td>Axisol R \u2013 Industrial Roof<\/td>\n<td>Threaded rods, clamps, S320GD<\/td>\n<\/tr>\n<tr>\n<td>Flat Roof (with membrane)<\/td>\n<td>Axisol Roolf (ballast)<\/td>\n<td>No perforation, fast<\/td>\n<\/tr>\n<tr>\n<td>Flat Roof (bare concrete)<\/td>\n<td>Terrasol 1V or 2V<\/td>\n<td>Adjustable tilt, bolted<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Selection Criteria<\/h2>\n<ul>\n<li><strong>Waterproofing:<\/strong> If roof has membrane or older construction, prefer ballasted (zero perforation)<\/li>\n<li><strong>Available space:<\/strong> Terrasol 2V (2 rows) gives greater power density per roof sqm<\/li>\n<li><strong>Wind zone:<\/strong> Ballasted systems need extra weight in high wind pressure zones (islands, coastal)<\/li>\n<li><strong>Roof load:<\/strong> Check if roof can bear the extra weight (typically 15\u201325 kg\/m\u00b2 with ballast, 5\u201310 kg\/m\u00b2 bolted)<\/li>\n<li><strong>Static study:<\/strong> AXINAR provides <strong>free static study<\/strong> for every project<\/li>\n<\/ul>\n<div style=\"border:1px solid rgba(221,43,28,.28);border-radius:10px;padding:22px;margin:26px 0;background:rgba(255,255,255,.02);\">\n<div style=\"margin-bottom:14px;\">\n<div style=\"font-family:'Barlow Condensed', sans-serif;font-size:1.35rem;font-weight:700;line-height:1.15;margin-bottom:2px;color:#ffffff;\">AXINAR Axisol Roolf<\/div>\n<div style=\"opacity:.85;font-size:.92rem;color:#ffffff;\">Flat roof PV mount, ballast, no perforation<\/div>\n<\/div>\n<div>\n<p style=\"margin:0 0 12px 0;line-height:1.55;color:#ffffff;\">Ideal for roofs with waterproofing membrane. Ballast system ensures stability without touching roof waterproofing.<\/p>\n<ul style=\"margin:0 0 14px 0;padding-left:20px;color:#ffffff;\">\n<li style=\"margin-bottom:6px;\">Anodized aluminum<\/li>\n<li style=\"margin-bottom:6px;\">Ballast loading, no holes<\/li>\n<li style=\"margin-bottom:6px;\">Modular design for fast installation<\/li>\n<\/ul>\n<p><a href=\"\/en\/p\/axisol-roolf-en\" style=\"display:inline-block !important;background:#dd2b1c !important;color:#ffffff !important;font-family:Barlow Condensed, sans-serif !important;font-size:.9rem !important;font-weight:700 !important;text-transform:uppercase !important;letter-spacing:1.2px !important;padding:10px 22px !important;border-radius:6px !important;text-decoration:none !important;margin-top:10px;\">See the product \u2192<\/a><\/div>\n<\/div>\n<div style=\"border:1px solid rgba(221,43,28,.28);border-radius:10px;padding:22px;margin:26px 0;background:rgba(255,255,255,.02);\">\n<div style=\"margin-bottom:14px;\">\n<div style=\"font-family:'Barlow Condensed', sans-serif;font-size:1.35rem;font-weight:700;line-height:1.15;margin-bottom:2px;color:#ffffff;\">AXINAR Terrasol 2V<\/div>\n<div style=\"opacity:.85;font-size:.92rem;color:#ffffff;\">Flat roof, 2 panel rows per rail<\/div>\n<\/div>\n<div>\n<p style=\"margin:0 0 12px 0;line-height:1.55;color:#ffffff;\">For roofs where you want maximum power per square meter. The 2-row arrangement uses space better.<\/p>\n<ul style=\"margin:0 0 14px 0;padding-left:20px;color:#ffffff;\">\n<li style=\"margin-bottom:6px;\">Galvanized Greek manufacture<\/li>\n<li style=\"margin-bottom:6px;\">Compact, maximum power density<\/li>\n<li style=\"margin-bottom:6px;\">Adjustable tilt<\/li>\n<\/ul>\n<p><a href=\"\/en\/p\/terrasol-2v-en\" style=\"display:inline-block !important;background:#dd2b1c !important;color:#ffffff !important;font-family:Barlow Condensed, sans-serif !important;font-size:.9rem !important;font-weight:700 !important;text-transform:uppercase !important;letter-spacing:1.2px !important;padding:10px 22px !important;border-radius:6px !important;text-decoration:none !important;margin-top:10px;\">See the product \u2192<\/a><\/div>\n<\/div>\n<h2>Request a Static Study &amp; Quote<\/h2>\n<p>Send us your project basics, square meters, roof or ground type, zone, PV capacity, and we&#8217;ll respond within 24 hours with a recommended mounting system and <strong>free static study<\/strong>.<\/p>\n<p><a href=\"\/en\/contact\" style=\"display:inline-block !important;background:#dd2b1c !important;color:#ffffff !important;font-family:Barlow Condensed, sans-serif !important;font-size:1rem !important;font-weight:700 !important;text-transform:uppercase !important;letter-spacing:1.5px !important;padding:12px 28px !important;border-radius:8px !important;text-decoration:none !important;margin-top:8px;\">Request quote \u2192<\/a><\/p>\n<hr>\n<p><em>See <a href=\"\/en\/blog\/pv-tilt-angle-greece-by-zone\">PV tilt angle in Greece<\/a> or all <a href=\"\/en\/solar-panel-mounts\">AXINAR mounts<\/a>.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Selecting the right PV mounting system is the first technical question of every installation. The answer depends on roof type, [&hellip;]<\/p>\n","protected":false},"author":16,"featured_media":7413,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"rank_math_title":"PV Mounts Tile Roof vs Flat Roof | AXINAR","rank_math_description":"PV mount selection by roof type: tile roof, industrial roof, flat roof (ballast or bolted). AXINAR Axisol Roolf, Tile Roof, Terrasol 1V\/2V.","footnotes":""},"categories":[176],"tags":[],"class_list":["post-7943","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/posts\/7943","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/users\/16"}],"replies":[{"embeddable":true,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/comments?post=7943"}],"version-history":[{"count":0,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/posts\/7943\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/media\/7413"}],"wp:attachment":[{"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/media?parent=7943"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/categories?post=7943"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/tags?post=7943"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}