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Section 4: Retrofit Assessment – technical, use and environment
4.11 Performance of floors

Section 1: Introduction

1.2 Introduction to Energy Efficiency and Retrofit
1.1 Welcome
1.3 Introduction to the Circular Economy

Section 2: Significance understanding the heritage values

2.1 Introduction
2.2 Estimating the Age of a Building and what that means (inc. 2.3)
2.4 Philosophy and Principles
2.5 Assessing and Articulating Significance
2.6 Using Significance
2.7 Other Investigations and Research
2.8 Archaeological Investigations
2.9 Dendrochronology
2.10 Architectural Paint Analysis and Research
2.11 Conservative Repair and Maintenance
2.12 Compatibility
2.13 Reversibility or Re-Treatability
2.14 Authenticity
2.15 Documenting Decisions and Work Undertaken

Section 3: Regulations, Laws and Official Guidance

Introduction
3.1 The influence of laws and regulations on development
3.2 Laws that protect buildings
3.3.1 Scheduled Monuments
3.3.2 Listed Buildings
3.3.3 Ecclesiastical Exemption
3.3.4 Conservation Areas
3.3.5 Locally Listed Buildings
3.3.6 Buildings in National Parks and other Historic Areas
3.3.7 Building Regulations
3.3.8 Second Tier Guidance – Building Regulations
3.3.9 BSI Retrofit Standards
3.3.10 Energy Performance Certificates (EPC’s)
3.3.11 Minimum Energy Efficiency Standards (MEES’s)
3.3.12 Wildlife (includes 3.3.13)
3.3.14 Party Walls
3.3.15 Planning Consent

Section 4: Retrofit Assessment – technical, use and environment

4.1 Introduction
4.2 Tools and equipment
4.4 The Way Buildings Perform
4.5 Moisture Generally
4.6 Assessing Moisture Issues
4.7 Thermal Mass
4.8 Overheating
4.9 Thermal bridging
4.10 Thermal Bypass
4.11 Performance of floors
4.12 Walls
4.13 Roofs
4.14 Structural defects
4.15 Types of heating and ventilation systems
4.16 Identifying how Alterations Since Original Construction Affect Thermal Performance
4.17 Craftsmanship
4.18 Ventilation
4.19 Occupancy
4.3 Process

Section 5: Energy Efficiency Assessment and Modelling

5.1 Introduction
5.2 Energy modelling methodologies
5.3 U-value calculations and hygrothermal modelling
5.4 Stages at which energy modelling is undertaken

Section 6: Retrofit Options and making decisions – including the range of issues to consider

6.1 Introduction
6.2 Evaluation of the improvement options
6.3 Agreement on intended outcomes
6.4 Improvement plan preparation

Section 7: The Retrofit Measures and their Interaction including Materials and the Principles of Design

7.1 Introduction
7.2 Insulation materials
7.3 Insulating Roofs
7.4 Insulating Walls
7.5 Insulating Floors
7.6 Dealing with Windows and Doors
7.7 Building Services, Equipment and Renewable Technologies

Section 8: Finalising Proposals – design and specify ‘works’ and ‘measures’

8.1 Introduction
8.2 Process
8.3 Thinking ahead

Section 9: Implementation

9.1 Introduction
9.2 Project Team and Other Roles
9.3 Managing risks

Section 10: Audit and Evaluation

10.1 Introduction
10.2 Audit
10.3 Evaluation

Section 11: Reporting - making recommendations and giving advice

11.1 Introduction
11.2 Reporting on retrofit measures
11.3 Reporting on future care and maintenance

Section 12

Glossary

4.11 Performance of floors

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Updated on August 2, 2024

4.10 Thermal Bypass 4.12 Walls

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4.11 Performance of floors

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