Make an appointment Call now

All about skylight inspections

Ensuring the structural integrity and longevity of your roof when installing or maintaining skylights is crucial to prevent sagging or leaks. Learn how to address common issues, such as defects in connections and mechanical components, through regular maintenance and timely repairs, while considering the cost-effective option of professional inspection to safeguard your home.

The roof surface may contain a skylight and/or dome. If a skylight or dome is installed later, special attention must be paid to the beam structure. To install larger skylights or domes, load-bearing beams that are part of the roof structure must be interrupted regularly. If this is not properly supported, there is a real risk of the roof surface sagging.

  • Note that a weakened structure may cause the roof surface to sag or weaken further if not repaired. Such repairs are often relatively easy to make by inserting a few beams between the existing purlins and/or making other adjustments.
dakraam.png

Skylight connections Roof

If there are any defects around the connections (lead or lead substitute), waterproofing tape can be used for repairs. This type of tape is available at any hardware store. If the defects are too severe, repair may be impossible and/or pointless. An expert in this field may be able to install a new connection, extending the lifespan of the skylights. Depending on the cost, replacing the elements can always be considered.

  • Check these connections around the roof openings annually; any blown-up material can be corrected immediately.
  • Remove dirt and leaves around the roof opening to prevent obstructions in the drainage system.
  • These activities can be carried out independently.
Homekeur-dakraam-aansluiting-gerommel.png

Other comments, defects or points of attention regarding a skylight

  • This includes leaking glazing , other leaks and/or defects in the hinges and locks.
  • Is the double glazing leaking in the roof opening? This isn't a problem in itself and can remain so. The view will become more blurred over time.
Homekeur-lekke-dubbele-beglazing.png
  • Inactive leaks: These could be caused by the window being open during rainfall or by condensation. The cause could also be a repaired defect (resulting in leakage) on the outside of this roof opening.
  • Active leaks : these can be caused by the window being left open during rainfall or by condensation. Another possible cause could be a defect (resulting in leakage) on the outside of this roof opening, so you'll need to conduct a thorough investigation. If no defect is present, rain or condensation could be the cause. In this case, there's little you can do other than carefully manage the roof opening's opening position and/or possibly improve the indoor climate to combat condensation.
  • The entire roof window may be poorly maintained , which is inherently detrimental to its lifespan and will lead to replacement sooner than usual. This overdue maintenance can still be addressed by doing it yourself.
    • Regularly grease any moving mechanical parts or spray them with penetrating oil.
    • Remove any contamination from the outside.
    • Clean the whole thing regularly.
Homekeur-dakraam-aansluiting-gerommel2.png
  • Are there any defects in the roof window's hinges and locks , or are some mechanical components malfunctioning or functioning poorly? These parts can be replaced, after which the entire system will usually function properly again.
  • If your skylight is difficult to open and close, we recommend first spraying all moving parts with penetrating oil and then lubricating them. If necessary, adjust the entire system so that the controls, including the window's opening and closing, function smoothly and as intended.
  • There is wood rot in the skylight: Because wood rot is already present, the condition of the window will remain dated even after repair and replacement might be a better option.

Skylights

If a flat roof has a roof opening with a skylight , it's usually fitted with an acrylic skylight, which may be damaged or broken. If any defects are detected, there's a risk of water ingress, and repair is often impossible. The skylight (only the cover) can be replaced if necessary.

Would you like to make an appointment for a building inspection?

The cost of a building inspection (up to 250 m²) is only €489 including VAT. We'll conduct a comprehensive building inspection and you'll receive a building report. Do you have any questions? We're happy to help and can schedule an appointment with an expert inspector right away if you wish!

Recent articles

Een stel met een man die kijken naar een tablet
blog
30 September 2026
Why a structural inspection at Homekeur costs €549 starting October 1st
As of October 1, 2026, the price of a building inspection at Homekeur will be €549, including VAT. This is a deliberate choice, as we do not want to compete on the lowest price, but on quality. A good building inspection requires time, expertise, and attention. That is why we continue to invest in our inspectors, quality controls, and even better reports. In this article, we explain why we are choosing this course.
homekeur_funderingsrisico_onderzoek_
blog
03 September 2026
NTA 8060: the basis for a professional building inspection
What is NTA 8060 and why is this technical standard important for a structural inspection? NTA 8060 describes a uniform methodology for assessing the structural condition of homes. Homekeur uses this methodology as an important basis for its structural inspections and is also actively involved in the revision of NTA 8060. In this article, we explain what NTA 8060 entails, what you as a home buyer will notice, and why the methodology is currently being updated.
Een vrouw achter een laptop
blog
02 September 2026
Energy labels cause price differences in home values ​​in 2026
In 2026, the energy label will have an increasing influence on the value of a home. Energy-efficient homes are more attractive to buyers, have lower monthly costs, and can be more favorable for the maximum mortgage amount. As a result, the price difference between homes with a good and a poor energy label can be significant. How significant is the influence of the energy label on home value, and which improvements can increase the value of your home?