English (beta) · translation in progress — some pages still show the Dutch source.
Dakopbouwen en nokverhogingen

Constructieve aandachtspunten bij dakopbouw

A roof extension places extra weight on the existing roof and thus on everything underneath it. Structural points of attention therefore do not start on the roof, but at the foundation.

Hoofdgids · 13 min lezenDakopbouw: complete uitleg
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Load chain

The extra weight of a roof extension — dead weight, snow, wind, live load — must be transferred via load-bearing walls, floors, and ultimately the foundation. With older houses, the load-bearing capacity is not always sufficient.

Preliminary investigation

A roof extension begins with a structural investigation: recording the existing situation, checking available drawings, possibly a foundation investigation, and always a structural calculation for the new situation.