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What is Part L compliance?
Part L ComplianceCertified U Values...Our La Porte pairs, VuFold Sliding doors, P20 Double Glazed Porch Pairs, Salisbury Sliding Patio Doors, Kingston Hardwood Door Sets and the Cavendish Hardwood Patio Door Sets have been independently certified by TRADA.U Values measure the Thermal Resistivity of a building element such as the roof, walls, windows and door sets and the certified U Value amounts are shown in the product data panel of a respective door.Indicative U Values...As the name implies, Indicative U Values give a guidance U Value figure for doors that have not been assessed and certified by an Independent notified body. Indicative U Values within this section of doors are derived from information contained in SAP 2005, (The Government's Standard Assessment Procedure For Energy Rating of Dwellings), as referenced by BR 4-13, (Conventions For U Value Calculations). Indicative U Values are acceptable within Part L of the Building Regulations in the absence of certified U Values.
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