Article 1
Classes of performance in relation to air permeability for rooflights of plastics and glass and roof hatches, as set out in the Annex, are established.
Commission Delegated Regulation (EU) 2019/1342 of 14 March 2019 supplementing Regulation (EU) No 305/2011 of the European Parliament and of the Council by establishing classes of performance in relation to air permeability for rooflights of plastics and glass and roof hatches (Text with EEA relevance.)
Commission Delegated Regulation (EU) 2019/1342 of 14 March 2019 supplementing Regulation (EU) No 305/2011 of the European Parliament and of the Council by establishing classes of performance in relation to air permeability for rooflights of plastics and glass and roof hatches (Text with EEA relevance.)
Data as of 2026-07-04 · Compiled from an official source version. Later amendments or repeals may not be reflected; the official text prevails. · Read the official text ↗
Article 2
This Regulation shall enter into force on the twentieth day following that of its publication in the Official Journal of the European Union .
Supplementary provisions
ANNEXSupplementary provisions
ANNEX Classes of performance in relation to air permeability for roof lights of plastics and glass and roof hatches Class Lower limit value of Internal Pressure (4 Pa) Higher limit value of Internal Pressure (100 Pa) Air permeability (in m 3 /(h.m)) A ( *1 ) < 1,4 < 12 B ≥ 1,4 ≥ 12 C ≥ 6 ≥ 50 Note: The boundaries of the classes used in this Table may be derived from the following formula: Where: Q is the leakage rate in m 3 per hour, per linear m rooflight perimeter during a test under internal pressure P is the internal pressure during a test (in Pa) Q 100 is the leakage rate in m 3 per hour, per linear m rooflight perimeter at an internal pressure of 100 Pa ( *1 ) In case of class A, in addition to declaring the class, the worst measurement of all pressure steps shall also be declared using the following template: Class A ( internal pressure (100Pa), assessed leakage rate ).
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