I'm trying to understand what constitutes a good U-value. I want to know the ideal range or number that indicates a material or structure has a good thermal performance, specifically in terms of heat transfer.
                
                  
                  
                    
                      
                      
             
            
                
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    Silvia
    Sun Mar 30 2025
   
  
    Determining what constitutes a good U-value primarily involves referring to the Building Regulations.
  
  
 
                    
                  
  
    
    Bianca
    Sat Mar 29 2025
   
  
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    Riccardo
    Sat Mar 29 2025
   
  
    These regulations serve as the benchmark for assessing the quality of a U-value.
  
  
 
                    
                  
  
    
    PearlWhisper
    Sat Mar 29 2025
   
  
    Compliance with the current Building Regulations, which specify a U-value of 1.4 for existing dwellings, is crucial.
  
  
 
                    
                  
  
    
    ShintoMystery
    Sat Mar 29 2025
   
  
    If a building's U-value meets or exceeds this standard, it can be considered good.