Ice dam forming on the roof — Leiden, Zuid-Holland
An ice dam is a ridge of ice that forms along the eaves of a roof, preventing snowmelt from draining off. Heat escaping through the attic melts snow on the upper roof, and the water refreezes when it reaches the cold overhang. As the dam grows, water backs up behind it, seeps under shingles, and leaks into the attic, ceiling, and walls. Chronic ice dams signal inadequate attic insulation, poor ventilation, or air leaks from the living space into the attic. A roofer can install ice-and-water shield membrane on the vulnerable eave area, improve attic ventilation with ridge and soffit vents, and coordinate with an insulation contractor to seal bypasses that let warm air reach the roof deck.
Waarom dit veel voorkomt in Leiden
Daken in Leiden variëren van steile pannendaken op oudere panden tot platte membraandaken; beide krijgen het zwaar te verduren tijdens najaars- en winterstormen van de Noordzee, wat lek- en stormschade oplevert.
Who to call
For this problem in Leiden, call a: Dakdekker
Vind een Dakdekker in LeidenSymptoms to look for
- Thick ridge of ice visible along the roof edge or in the gutters
- Large icicles hanging from the eaves, especially on the sunny side
- Water stains or drips appearing on ceilings or walls near the roof edge
- Snow melting unevenly on the roof — bare patches above heated rooms while the rest stays white
- Gutter pulling away from the fascia under the weight of ice buildup
Spoeddienst in Leiden
Spoeddiensten in Leiden reageren binnen 25–55 minuten. Spoedtarieven rond €70–€170 voorrijden plus €65–€130/uur incl. btw.