In pre-WWII Berlin, the shape of your roof was a political decision

Flat vs Pitched Roofs: Leaks, Snow, and Practicality

• Many commenters repeat a folk rule: flat roofs “always leak,” especially in wet or snowy climates.
• Others counter that most “flat” roofs actually have slight pitch and that modern membrane systems (EPDM, PVC, etc.) can be very durable if properly designed and maintained.
• Several note that flat roofs are higher-maintenance and more sensitive to blocked drains, snow load, and structural deflection; bending can open cracks and cause leaks.
• Critics argue that in snowy regions flat roofs are inherently inefficient because they require stronger structures for the same load; supporters respond that it’s a tradeoff for more usable space or height under strict zoning.

Architecture, Politics, and Beauty

• Commenters link the pre-WWII Berlin roof dispute to broader culture-war politics (e.g., “freedom fries,” rules for “beautiful” public buildings).
• Roof type is framed as an outcome of political affiliation: join a given housing co-op or ideology, and you inherit its preferred style.
• There is debate over whether architecture should be judged purely by practicality/efficiency or must also satisfy aesthetic and psychological needs.
• Some defend the idea that buildings “should be beautiful”; others say that’s now genuinely controversial.

Modernism, Brutalism, and Ideological Aesthetics

• Discussion of Nazi preferences for “beautiful” traditional forms versus modernist and socialist architecture.
• Some condemn communist-era “ugly blocks”; others point out that socialist systems also produced admired buildings and public spaces, and contrast these with post-1970s strip-mall/suburban sprawl.
• Brutalism is clarified as stemming from “béton brut” (raw concrete), though many still associate it with harsh, fortress-like appearances.

Codes, Fashion, and Local Failures

• In Germany, roof form and even tile color are often mandated via planning rules.
• In Seattle, London, Vancouver and elsewhere, flat roofs and minimal eaves are linked to height limits, floor-area rules, and fashion rather than climate suitability.
• Vancouver’s “leaky condo crisis” is cited as a cautionary example of design and detailing that ignored local rain conditions.

Craftsmanship, Longevity, and Materials

• Several contrast centuries-old pitched slate/ceramic roofs in Europe, which tolerate neglect, with modern flat roofs that typically need regular maintenance.
• Detailed anecdotes highlight how small design decisions (eaves, drainage, slopes, materials, floor drains, insulation) can dramatically affect durability and maintenance costs.