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You reduced warmth loss, satisfy London s strict Part L and Part O requirements, and enhance your EPC score when you specify <strong>high performance, reduced U value glazing</strong> customized to your home. Go for <strong>entire window U values 1.2 W/m K</strong>, g values around 0.35 0.55, and confirmed examination data (EN 14351 1, EN 1279). Variable in sound, positioning, and any kind of preservation or listed standing, then use qualified installers (FENSA/CERTASS) to make certain compliance and assist in additional performance gains.




<h2>Key understandings</h2>




<ul>


<li>Choose home windows with whole-window U-values 1.2 W/m K and a minimum of a B power ranking to meet and go beyond London Structure Laws.</li>


<li>Use low-e double or three-way glazing with argon-filled tooth cavities and warm-edge spacers to cut warm loss by as much as 65% contrasted with solitary glazing.</li>


<li>Control g