Doherty Energy

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

Energy Statement Greater London

Sustainability Reports

Code for Sustainable Homes

BREEAM Domestic Refurbishment

SAP Assessments for new dwellings

SAP Assessments for conversions

SAP Assessments for extensions with large amounts of openings

rdSAP Assessments

SBEM Modelling

Water Efficiency Calculations

Air Permeability Testing

Ventilation Flow Testing

Sound Testing

Thermographic Surveys

Dew Point Analysis

On Construction Energy Performance Certificates

Energy Performance Certificates

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

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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

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Sustainability Reports

 

Enhanced Energy Statement

 

Sustainability Appraisals

 

Water Efficiency Analysis

 

Renewable Energy Feasibility Studies

 

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Code for Sustainable Homes

 

Licenced Code Assessors

 

Provide Code Assessments

 

Advice on how to improve the dwellings

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BREEAM Domestic Refurbishment

 

Licenced BREEAM Domestic Refurbishment

 

Provide Domestic Refurbishment

Assessments

 

Advice on how to improve the dwellings

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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

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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

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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

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rdSAP Assessments

 

Approved rdSAP Assessors

 

Domestic Energy Assessors

 

Advice on how to improve the dwellings

 

Energy Performance Certificates

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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

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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

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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

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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

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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

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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

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Dew Point Analysis

 

Dew point calculations for thermal envelopes

 

Interstitial condensation risk analysis

 

Surface Condensation Prediction

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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

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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

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