The Velux maintenance kit is not just a bottle of cleaner and a cloth. Depending on the generation of your roof window and its material (wood, polyurethane, PVC), the contents of the kit and the actions to be taken vary greatly. Ignoring this distinction means applying an unsuitable treatment, with direct consequences on the sealing and longevity of the frame.
Compatibility of the Velux ZZZ 220 kit with older generations of windows
Velux markets the ZZZ 220 kit as the standard maintenance reference. What most product sheets in DIY stores overlook is its extensive compatibility with frames that are no longer manufactured. If your roof window has an old reference GGL or GGU dating back more than fifteen years, this kit remains usable without adaptation.
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We recommend checking the identification plate on the top of the frame before any purchase. This plate indicates the exact type (GGL, GPL, GGU, GPU) and the year of manufacture. The ZZZ 220 covers the majority of these configurations, which avoids a complete window replacement when only the seals and lubrication are problematic.
Before opting for an expensive replacement, the Velux Brico Dépôt maintenance kit allows you to restore roof windows that many mistakenly consider obsolete. The grease provided in the kit and the wood treatment product are often sufficient to restore smooth opening and proper sealing.
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Wood kit, polyurethane kit, climate kit: choose according to material and exposure
Velux now offers maintenance kits differentiated by material. The distinction is not cosmetic. A kit designed for wooden windows contains a protective varnish and a treatment oil that are incompatible with a white polyurethane finish, which only requires a neutral cleaner and silicone grease.
Applying a wood product on a polyurethane frame does not damage it immediately, but leaves a greasy film that attracts dust and clogs the seals. Conversely, cleaning a raw wood frame with a polyurethane product does not protect it against moisture.
Kits for demanding climates
Some kits include a grease formulated to withstand intense UV exposure and marked temperature fluctuations. If your roof window is south-facing or at high altitude, this variant is preferable. Standard grease degrades faster under prolonged solar exposure, which stiffens the hinges and forces the opening mechanism.
- Wood kit: protective varnish, treatment oil, grease for hinges, microfiber cloth
- Polyurethane/PVC kit: neutral pH cleaner, silicone grease, non-abrasive cloth
- Climate kit: UV high-resistance grease, treatment product suitable for the material, lubricant for motorized mechanisms
Maintenance of Velux motorized and solar mechanisms
A Velux motor that strains on poorly lubricated hinges consumes more and wears out prematurely. Installers regularly observe this: the majority of motorization failures do not come from the motor itself, but from mechanical clogging that maintenance could have prevented.
On a motorized or solar opening window, greasing the pivot points and hinges should precede any electrical checks. The kit provides the appropriate grease. We find that semi-annual maintenance of the rotation axes is sufficient to maintain quiet and smooth operation for years.
Ventilation filter and integrated blind
The ventilation filter gradually clogs with fine particles and pollen. Removing it, brushing it dry, and then repositioning it takes less than five minutes. A clogged filter reduces air renewal and promotes condensation on the interior glazing.
If a blackout or filtering blind is installed, its side rails deserve a dry cloth wipe each time the window is cleaned. Dirty rails cause a blind to get stuck halfway, a common problem that the kit does not directly address but that the provided microfiber cloth can help resolve.
Maintenance frequency and protocol for the sealing connection
The exterior connection (aluminum or lead apron depending on the models) is the part most exposed to the elements. We recommend a visual inspection at least twice a year, ideally in spring and autumn.
- Check for the absence of moss or lichen on the connection, which retains water and accelerates corrosion
- Check the flexibility of the peripheral seals by pressing with your finger: a hardened or cracked seal should be replaced
- Clean the integrated drainage gutter in the frame, often blocked by leaves or roofing debris
- Apply the kit grease to the pivots and locking points after cleaning
A sealing joint replaced in time prevents an infiltration that would damage the wooden frame or the surrounding drywall. Velux spare parts (seals, fixing clips, aprons) are available separately in DIY stores, but the maintenance kit already contains the necessary products to delay this replacement.
The complete protocol (cleaning the glazing in the pivoted position, treating the frame, lubrication, checking the connection) takes about thirty minutes per window. This is a modest time investment compared to the cost of replacing a frame or re-sealing by a roofer.