Limiting U-values

  for new fabric elements in existing dwellings

                                    Min U-value Wm2K

ROOF                                       0.15

WALLS                                     0.18

FLOOR                                     0.18

WINDOWS                               1.4   or Window Energy Rating B min

ROOFLIGHT                             2.2

DOORS                                    1.4   or Door Energy Rating ‘B’ minimum

                                                          or ‘C’ if more than 60% glazed 

BUILDING Surveys

HOMEBUYER Surveys

RICS Valuations

  PARTY WALL Surveyors