Book a builder consultation to review your skylight design and flashing detail before it becomes a callback 👉 https://www.luxweld.com.au/pages/contact
Most builders have heard the same line, there are two kinds of skylights, the ones that leak and the ones that will leak. But that isn't a fact. It's a planning, product-selection, and water-management problem. In this episode, Jono reviews real skylight and roofing installations to show what separates a risky roof penetration from a reliable design feature. From thermal performance and custom triple glazing to insulation, water run-off, tape sequencing, and hose testing, he breaks down the details that need to be resolved before the roof goes on.
You'll learn:
◼️ Why the myth that skylights always leak still persists and what actually causes the failures
◼️ How changing building-code requirements make thermal performance and careful skylight selection more important, especially in colder climates
◼️ What a properly planned high-performance skylight detail looks like, including insulation around thermal gaps
◼️ Why triple-glazed and custom skylights must be planned early instead of ordered when the roof is ready
◼️ How upstand height, roof offsets, wraps, and a clear drainage path protect a skylight from water ingress
◼️ Why bottom-to-sides-to-top taping and secondary sealing layers matter when integrating a skylight into the roof
◼️ The value of hose-testing an installation before handover
◼️ Why you shouldn't rely on silicone to fix a detail that wasn't planned properly from the start
◼️ The simple water-management principle every builder needs to remember: water is heading downhill, so create the path
Timestamps
00:00:00 Introduction:
00:01:36 Reaction 1: Why Builders Assume Every Skylight Will Eventually Leak
00:01:47 Breaking the Myth: Skylights Don't Leak When They're Treated Right
00:02:12 Reaction 2: Thermal Performance, Leaks, and Changing Building-Code Requirements
00:02:35 How One Builder Solved a 20mm Thermal Gap in a High-Performance Skylight Detail
00:02:54 Why Insulation, Planning, and the Final Finish Need to Be Considered From the Start
00:03:19 Reaction 3: A Custom Triple-Glazed Skylight on a Five-Degree Roof
00:03:42 Triple Glazing and Lead Times: Why You Can't Leave Custom Skylights Until the Last Minute
00:03:58 XPS Insulation, Pre-Installed Wraps, and Diverting Water Away From the Skylight
00:04:20 The Details That Matter: Upstand Height, Roof Offset, Water Path, and Code Compliance
00:04:31 Taping the Detail Properly: Bottom First, Then Sides, Then the Top
00:05:06 Why a Hose Test Should Happen Before Handover
00:05:22 What This Installation Gets Right Before the Roof Even Goes On
00:05:53 The Most Unique Skylight Detail Jono Has Seen: The Barbecue Tray
00:06:18 Old Way vs. Better Way: Letting Water Pond or Giving It a Path
00:06:40 Why Water Flow and Planning Are the Key to Keeping a Roof Dry
Follow Jono Anderson & Luxweld:
Facebook: https://www.facebook.com/profile.php?id=61556448458026&sk
Tiktok: https://www.tiktok.com/@luxweld
LinkedIn: https://www.linkedin.com/company/luxweld-pty-ltd/
Instagram: https://www.instagram.com/luxweld.au