State Opera Hanover historical copper roof

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Key facts: Waterproofing of a historical roof

Authorised Contractor
Großmann & Stühmeier GmbH, Bad Oeynhausen

State Opera Hanover historical copper roof

With its listed masonry structure, the State Opera Hanover has been one of the most representative buildings of the Lower Saxon state capital since its erection in 1852. The historic copper roof had become in need of refurbishment over the years
and had leaky seams and connection areas. In order to prevent water damage in the underlying
rooms, the defective joints and junctions were reinforced with fleece using the detail waterproofing system Triflex ProDetail. The waterproofing specialists at Grossmann & Stühmeier GmbH were thus able to complete the refurbishment work within a very short period of time despite adverse weather conditions.

Refurbishment requirements

  • Repair of leaky seams and connection areas
  • Fast and long-lasting waterproofing
  • Good adhesion to metal
  • Crack-bridging and impermeable from all sides
  • Refurbishment without structural changes

Refurbishment steps overview

  1. Priming with Triflex Metal Primer
  2. Waterproofing of defective roof junctions, seams and transitions with Triflex ProDetail
  3. Finish with Triflex Cryl Finish 205

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