Roof Leaks After Solar? Here Is What Went Wrong

Roof leakage after solar installation is the most common complaint from Indian homeowners two years after the panels go up — and by the time the ceiling stains, the installer is usually unreachable. Here's the number nobody mentions: a 3kW rooftop solar system puts 4 to 6 structure legs on your slab, and every leg takes 2 to 4 anchor bolts. That's 16 to 24 holes drilled through waterproofing that was designed as one unbroken layer. Where those holes stop, and what gets built over them, decides whether your bedroom ceiling is stained by the second monsoon. In this video I break down all three solar mounting structure methods used in India — no company names, no installations of ours on screen: • The surface-mounted method almost every installer uses, with chemical anchor fasteners drilled straight through the roof finish • The correct method: cutting down to the structural RCC slab, anchoring into concrete, and recasting the pedestal with waterproofing compound • The non-penetrative ballast structure used on heritage and older buildings, where not a single hole is drilled Plus the one step that costs you 60% of anchor strength when it's skipped, why a 100-125mm RCC slab changes everything, what happens when the drill hits rebar, and the two real drawbacks of going ballast-free. This isn't a sales video. It's so you can ask the right questions before you sign a quotation. 00:00 Your roof is leaking — but not from the panel 00:22 16 to 24 holes: the number nobody counts 00:53 Three methods, one roof 02:08 When drilling isn't allowed at all 03:02 Method 1 — drilling straight into the roof surface 04:20 Fine in year one, leaking by year five 05:25 Your RCC slab is only 4-5 inches thick 06:19 What happens when the drill hits rebar 07:16 Why this method is so common 07:41 Method 2 — opening down to the slab 08:43 The one step everyone skips 09:52 Pedestal size, concrete mix and curing 10:43 Method 3 — zero holes 11:50 Two drawbacks of non-penetrative structures 12:34 So does solar actually damage your roof? Full written guide with a pre-installation checklist: lumencity.in/blog Planning a rooftop solar installation and want to ask about the foundation? info@lumencity.in Lumencity — Delhi | Since 2014 | 275+ MW installed | 7,000+ sites #RooftopSolar #SolarInstallation #RoofLeakage #Waterproofing #SolarIndia #PMSuryaGhar