Our 1970s bungalow in Groningen has a flat roof that's started leaking into the bedroom after heavy rain. We've had it patched twice in the last 5 years but it keeps coming back. A neighbour said we might need to replace the whole membrane. What should we budget for a proper repair or replacement?
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A temporary patch runs €150–400, but if your roof is failing repeatedly, replacement is usually smarter long-term. Full flat-roof membrane replacement typically costs €2,500–6,500 depending on size (most 1970s bungalows: 40–80 m²), membrane type (EPDM rubber, bitumen, or PVC), roof condition underneath, and access difficulty. Groningen labour rates are usually €40–55/hour. Many roofers will inspect for free. You don't need a permit for like-for-like replacement, but if you change the system type or add insulation, check with your gemeente first. Get 3 quotes—quality varies widely. Post your job on AstraNL to compare verified local roofers and their exact pricing.
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