SERVICES

At Doherty Energy we offer a wide range of services to help ensure every aspect of your project is energy efficient, compliant and value engineered for both building and running costs.

 

Although the services we offer can often be bundled together to ensure you have the right support from getting from inception all the way through to completion, each service can be undertaken separately.

Our Range of services is listed below:

Energy Statement

 

Support Planning Applications

 

Follow Energy Hierarchy - Be Lean

 

- Be Clean

 

- Be Green

 

Identify Targets for Reduction in Carbon Dioxide Emissions

 

Analyse Fabric and Building Services Efficiencies

 

Low or Zero Carbon/Renewable Technology Feasibility Studies

Back to the top

Energy Statement Greater London

 

Energy Statement in Accordance with Greater London Authority Requirements

 

Follow Mayors Energy Hierarchy  - Be Lean - use less energy

 

- Be Clean - supply energy efficiently

 

- Be Green - use renewable technology

 

Achieve Zero Carbon Homes

 

Evaluate the water usage of the proposed dwellings

 

Assess Overheating

Back to the top

Sustainability Reports

 

Enhanced Energy Statement

 

Sustainability Appraisals

 

Water Efficiency Analysis

 

Renewable Energy Feasibility Studies

 

Back to the top

Code for Sustainable Homes

 

Licenced Code Assessors

 

Provide Code Assessments

 

Advice on how to improve the dwellings

Back to the top

BREEAM Domestic Refurbishment

 

Licenced BREEAM Domestic Refurbishment

 

Provide Domestic Refurbishment Assessments

 

Advice on how to improve the dwellings

 

Back to the top

SAP Assessments for new dwellings

 

Approved SAP Assessors

 

On Construction Domestic Energy Assessors

 

U Value Calculations

 

Advice on how to improve the dwellings

 

Demonstrate compliance with Building Regulations Approved Document L1A

 

On Construction Energy Performance Certificates

Back to the top

SAP Assessments for conversions

 

Required for a building converted to create a new dwelling

 

Material change of use to form dwelling

 

Advice on how to improve the dwellings

 

Approved SAP Assessors

 

U Value Calculations

 

Demonstrate compliance with Building Regulations Approved Document L1B

 

On Construction Energy Performance Certificates

Back to the top

SAP Assessments for extensions with large amounts of openings

 

Required if extension has large amounts of openings

 

Extensions are only permitted to have openings no greater than 25% of the

floor area plus an openings that are lost due to the extension

 

Establish the opening areas allowed

 

Advice on how to improve the dwelling and extension

 

Area weighted U Value Calculations

 

Demonstrate compliance with Building Regulations Approved Document L1B

Back to the top

rdSAP Assessments

 

Approved rdSAP Assessors

 

Domestic Energy Assessors

 

Advice on how to improve the dwellings

 

Energy Performance Certificates

Back to the top

SBEM Modelling

 

Simplified Building Energy Model

 

Calculate the energy required to heat, cool, ventilate and light a non-dwelling

 

Accredited Assessors

 

Demonstrate compliance with Building Regulations Approved Document L2A

 

Advice on how to improve the building

 

Energy Performance Certificates

Back to the top

Water Efficiency Calculations

 

Demonstrate compliance with Building Regulations Approved Document G

 

Advice on the minimum acceptable efficiency for each fitting including,

flow rates of taps and showers, washing machine and dishwasher usage

along with WC flush rates

 

Advice on how to improve the water efficiency of dwellings

 

Back to the top

Air Permeability Testing

 

An air leakage test to determine the level of uncontrolled air flow through gaps

or cracks in the fabric of a building

 

Residential and Non-Residential Testing

 

Meet the requirements of Approved Document L1A and L2A

 

Advice on how to improve the dwellings

Back to the top

Ventilation Flow Testing

 

Flow rate testing for all mechanical extract fans

 

Demonstrate compliance with Building Regulations Approved Document F

 

Intermittent extract fans and Mechanical Ventilation Heat Recovery systems

 

Back to the top

Sound Testing

 

Sound Insulation testing in accordance with BS EN ISO 140-4

and BS EN ISO 140-7

 

Full ‘end-to-end’ support – from initial Design & Consultancy

to Testing & Certification

 

Noise Impact Assessments

Back to the top

Thermographic Surveys

 

Identify thermal bridging and Inadequate/missing or defective insulation

 

Air leakage through the building envelope

 

Quality of the cavity wall insulation

 

Surveys to meet requirements of BREEAM assessments

 

Surveys carried out in accordance with BRE 176 by

an Accredited Thermographic Engineer

Back to the top

Dew Point Analysis

 

Dew point calculations for thermal envelopes

 

Interstitial condensation risk analysis

 

Surface Condensation Prediction

Back to the top

On Construction Energy Performance Certificates

 

Assesses how energy efficient the new property is as a building

 

Ratings between A and G, A being the highest

 

On Construction EPCs are produced off plan using full SAP

(standard assessment procedure).

 

The certificate is required by Building Control to sign of new dwelling

 

Required to sell or rent a new property

Back to the top

Energy Performance Certificates

 

Assesses how energy efficient the existing property is as a building

 

Ratings between A and G, A being the highest

 

EPCs are produced off plan using rdSAP

 

Required to sell or rent a residential property

Back to the top

© 2024  Doherty Energy Limited

Legal

Doherty Energy