Energy and Sustainability Auditing 

J C Beachey (Formally Energy Check) OCDEA & Code for Sustainable Homes Assessor


  • Initial SAP assessment for new dwellings and  conversions

  • Design/construction advice to aid compliance

  • U-Value calculations

  • Thermal bridging assessment

  • Thermal capacity calculations

  • Compliance documentation and predicted SAP assessment/certification

  • Final SAP and Building Control certification

  • Renewable Heat Incentive SAP assessment

  • Initial compliance calculations for conversions

  • Water usage certification

  • Sustainability calculations and statements for Planning

                   J C Beachey

      24, Trem-y-Mynydd Court,

          BLAENAVON   NP4 9LX

Tel:  07957 652335



The revised Part G Building Regulations (Wales) came into force 1 November 2018 (lower limit for daily water use)

In England, there is an option for Planning to require lower water use ... see Part G England

In England and Wales there are two options for compliance with water use ... the Fittings Approach or the Water Use Calculator


Using Full-Fill cavity insulation

To avoid excessively wide cavities and yet have good insulation values, a full-fill insulation product may be the answer.  The following is a selection of products that give high insulation values.

Eurowall + (by Recticel)

Jabfill Premium (by Jablite)​

Rockwool Cavity Batts (by Rockwool)​

Thin-R CT/PIR (by Xtratherm)

Kingspan K106 (by Kingspan)