Repair Systems — Roofing Defects
Skylight flashing kit systems for tiled and metal roof installations
Skylight flashing kits seal the junction between the skylight frame and the roof covering, preventing water ingress at what is one of the most common leak points in residential and Class 2 buildings. Velux EDZ and Fakro LFT matched kits are engineered to specific skylight models and roof tile profiles to ensure weatherproof installation.
What are skylight flashing kit systems?
Skylight flashing kits seal the junction between the skylight frame and the roof covering, preventing water ingress at what is one of the most common leak points in residential and Class 2 buildings. Velux EDZ and Fakro LFT matched kits are engineered to specific skylight models and roof tile profiles to ensure weatherproof installation.
Product Reference
2 products — skylight flashing kit systems — scroll to view all
Velux EDZ MK04
Matched insulated tile flashing kit — Velux GGL/GGU MK04
System Description
The Velux EDZ MK04 is the matched insulated tile flashing kit for Velux GGL and GGU roof windows in the MK04 size (78×98cm). It is a model-specific and size-specific product — the EDZ MK04 cannot be used with any other Velux size and is not interchangeable with flashing kits from other manufacturers. The kit includes powder-coated aluminium step and counter flashings, an internal underfelt/membrane collar, and an insulated upstand that reduces thermal bridging at the skylight perimeter. The aluminium components are factory formed to match the tile profile geometries of all standard Australian tile types including terracotta plain tiles, concrete tiles, and Decramastic tiles — however, the installer must confirm compatibility with the specific tile profile on site before ordering. The step flashing sequence follows a specific Velux-prescribed installation order: underfelt collar first, then the insulated upstand, then the aluminium step flashings, then the counter flashing last. Deviation from this sequence can result in a detail that does not achieve the intended weathertight condition. Velux publishes installation guides for the EDZ kit including video instructions — confirm the current installation sequence from Velux Australia documentation. This kit is the mandatory companion product for the GGL MK04 on tiled roofs — generic lead flashings or site-made aluminium flashings are not an acceptable substitute and will void the Velux warranty.
Technical Properties
- Matched insulated flashing kit for Velux GGL/GGU MK04 (78×98cm) — model-specific and size-specific
- Powder-coated aluminium step and counter flashings — compatible with terracotta, concrete, and Decramastic tile profiles
- Internal underfelt/membrane collar included — prevents water ingress under tile at skylight upstand
Limitations
- Model-specific and size-specific — EDZ MK04 suits GGL/GGU MK04 only — confirm skylight model and size before ordering
- Not suitable for metal roof applications — separate Velux BDX or BFX flashing kit required for metal and corrugated iron roofs
- Aluminium flashings are factory-formed — site adjustment to tile profile must be within the tolerance range — confirm with installer before ordering
PROCUREMENT SOURCES
Confirm suitability with the current manufacturer TDS before specifying or applying.
Fakro LFT Insulated Flashing Kit
Matched insulated tile flashing kit — Fakro FTP/FTU series
System Description
The Fakro LFT Insulated Flashing Kit is the matched aluminium insulated tile flashing system for the Fakro FTP and FTU range of roof windows and skylights. Unlike the Velux EDZ which is sized to a specific skylight model, the Fakro LFT is available to suit all standard Fakro skylight sizes in the FTP/FTU range — confirm the specific kit code for the skylight size being installed. The LFT kit comprises a 5-piece aluminium system including an insulated underfelt collar, step flashings, a top counter flashing, and side flashings, all powder-coated for durability and corrosion resistance. The insulated collar reduces thermal bridging at the skylight perimeter and is compatible with the NCC Section J thermal performance requirements for roof penetrations in Class 2 buildings. The kit is suitable for terracotta plain tiles, concrete tiles, and Decramastic tiles — on-site confirmation of tile profile compatibility is required before installation. The Fakro LFT is the mandatory companion product for Fakro roof window installation on tiled roofs. The Fakro installation guide prescribes a specific installation sequence — confirm the current sequence from the Fakro Australia documentation. Fakro LFT kits are sold by size to match the specific skylight unit purchased — both must be ordered together. The LFT must not be used with Velux skylight units, and the Velux EDZ must not be used with Fakro units — the frame dimensions and upstand geometries are manufacturer-specific.
Technical Properties
- Matched insulated tile flashing kit for Fakro FTP/FTU series — available for all standard Fakro skylight sizes
- 5-piece aluminium installation system — step flashings, counter flashing, insulated underfelt collar, and side flashings
- Powder-coated aluminium — corrosion resistant — suitable for Australian coastal and inland environments
Limitations
- Fakro LFT must only be used with Fakro FTP/FTU skylight units — not compatible with Velux or other manufacturer units
- Not suitable for metal or corrugated iron roof applications — confirm separate Fakro metal roof flashing kit for non-tile roofs
- Tile profile compatibility must be confirmed on-site before installation — the LFT is designed for standard tile profiles, not unusual or oversized tile types
PROCUREMENT SOURCES
Confirm suitability with the current manufacturer TDS before specifying or applying.
System Comparison
Side-by-side comparison of skylight flashing kit systems. Confirm all product selections against the current manufacturer TDS before specifying.
| Brand | Sizes available | Tile compatibility | Insulation included |
|---|---|---|---|
| Velux EDZ | Size-specific — confirm code for skylight model and size | Terracotta, concrete, Decramastic | Yes — insulated upstand |
| Fakro LFT | Available for all standard Fakro FTP/FTU sizes | Terracotta, concrete, Decramastic | Yes — insulated underfelt collar |
Do not confuse skylight flashing kit systems with:
- Generic lead flashings — site-formed lead soakers and counter flashings are not an acceptable substitute for matched manufacturer skylight flashing kits — they cannot replicate the engineered geometry and will void the skylight warranty
- Metal roof flashing kits — the Velux EDZ and Fakro LFT kits listed here are for tiled roofs only — separate metal roof kits (Velux BDX, BFX or equivalent) are required for Colorbond, corrugated iron and standing seam metal roofs
- Curb-mount flashing for flat roof skylights — the Velux FCM curb-mount skylight requires a completely different waterproofing approach at the curb base — the matched tile flashing kits on this page do not apply
- Flashing compounds and sealants — silicone sealants at counter flashing head joints are a maintenance item — they are not a substitute for the full matched flashing kit system on a new or replaced skylight
Disclaimer
This page provides general technical information only. Final product selection must be confirmed against the current manufacturer technical data sheet, the specific skylight model and size, roof type and tile profile, and installer warranty conditions. Flashing kit codes are model-specific and size-specific — confirm the correct kit code with the manufacturer before ordering. Do not rely on this reference as a substitute for professional building or roofing consultant advice.