Tag: Part L

  • Understanding Approved Document L – Conservation of Fuel and Power

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    Approved Documents L or “Part L” provides guidance on meeting building regulations regarding heat gains and losses, air permeability and pressure testing, thermal insulation, boiler productivity, lighting, and storage techniques for hot water. Approved Document L is published as two separate volumes;  Each section covers specific regulations and requirements. Volume 1 : Dwellings A dwelling…