AECB (Association for Environment Conscious Building) members have full access to this forum which holds a wealth of information on the topics listed. Other forum visitors may freely search and read the forum but may not post new topics or replies.

Become an AECB member today to be able to post on this forum as well as receiving a host of other benefits.

Click here to see who we are and what we can offer you.

Author Topic: Extension design to PH standard?  (Read 1052 times)

Philip Bailey

  • AECBmember
  • Posts: 1
    • View Profile
Extension design to PH standard?
« on: November 02, 2016, 07:32:45 PM »
I am doing a large extension (40 sq m), single storey, to the rear of a 3 storey Victorian detached house.
Is there benefit to designing the extension to Passivhaus standard if the main house is not fully retrofitted and there is not an airtight layer between the extension and the main house?
It is likely that the windows in the main house will be replaced and the roof insulation will be upgraded. However, it is not practical to create an airtight layer or insulate the solid masonry walls or suspended timber floors.
Any thoughts would be very welcome.