My property passed Planning Approval on 7th December 2011.
The building on my property started in October 2013.
I've just found out that my property has no cavity wall insulation fitted at all below the DPC height.
The builder Bellway Homes) claim that according to their drawings it shouldn't have been fitted even though according to the Building Regulations 2010 it states that the cavity wall insulation below DPC height should continue 150mm below the floor insulation height.
The builder states that my property would be under the 2006 Building Regulations and not the 2010.
The NHBC Standards 2013 states in Chapter 5.1 D14:
(c) cold bridging
The design should ensure that any risk of cold bridging is minimised, giving particular attention to junctions between floor and external walls.
Precautions include:
• extending cavity insulation below floor slab level
• linking floor and wall insulation
• providing perimeter insulation to floors
• facing supporting substructure with insulation.
Any help or advice will be gratefully received.