Technical Fabric Surveys

Accurate technical fabric surveys for residential and commercial properties

A Technical Fabric Survey provides a detailed evaluation of the physical elements of a building, including its structure, insulation levels, materials, and thermal performance.

These surveys are essential for understanding how a property is built, how it loses energy, and what measures can be taken to improve efficiency and comfort.

E&F Retrofit Services Ltd brings over 20 years of experience in the energy and housing sector, delivering precise, reliable fabric surveys for homeowners, landlords, social housing providers, and contractors.

Based in Wrexham, we work throughout North and Mid Wales.

What is a technical fabric survey?

A technical fabric survey examines the key components of a building’s envelope — the parts that separate the inside from the outside.

Understanding these elements is essential for effective energy upgrades, PAS 2035 compliance, and long-term building performance.

A detailed fabric survey helps identify heat loss, moisture risks, material defects, and opportunities for insulation or efficiency improvements.

What our technical fabric survey includes

1. Assessment of Building Structure and Materials

We record the construction type and condition of:

• External walls (solid, cavity, timber, stone, etc.)
• Roof structures and coverings
• Floor types and subfloor ventilation
• Internal partitions and thermal connections

This information forms the basis for accurate modelling and retrofit recommendations.

2. Insulation Review

We assess existing insulation levels and opportunities for improvement:

• Loft and roof insulation
• Cavity or solid wall insulation
• Floor insulation
• Pipes, tanks, and heating system insulation

Identifying gaps or weaknesses in insulation helps reduce heat loss and improve comfort.

3. Thermal Bridging & Heat Loss Analysis

We examine areas where heat may escape more quickly, such as junctions between walls, floors, roofs, and window openings.

Understanding thermal bridges is essential when designing effective retrofit measures.

4. Windows, Doors & Glazing Examination

• Material type and condition
• Glazing specification (single, double, triple)
• Draught-proofing levels
• Ventilation features such as trickle vents

5. Air Tightness & Ventilation Assessment

Proper ventilation is essential for moisture control and indoor air quality. We review:

• Natural and mechanical ventilation systems
• Air leakage risks
• Signs of condensation or mould

This information supports effective retrofit planning and helps reduce future damp-related issues.

Why are technical fabric surveys important?

A technical fabric survey provides the evidence needed to make informed decisions about energy efficiency upgrades and building improvement works. It can help:

• Reduce energy bills through targeted upgrades
• Improve thermal comfort year-round
• Identify damp, mould, or structural risks
• Ensure compliance with PAS 2035 retrofit standards
• Support funding applications and improvement plans

These surveys are essential for retrofitting older properties, understanding fabric performance, and designing safe, effective energy-saving measures.

How technical fabric surveys support retrofit work

Fabric surveys are a vital component of effective energy efficiency projects. They help ensure:

• Measures are compatible with the property’s construction
• Risks such as damp or cold bridging are addressed
• Upgrades are safe, long-lasting, and cost-effective
• Retrofit designs meet PAS 2035 requirements

Whether you're planning insulation upgrades, ventilation improvements, or a whole-house retrofit, a technical fabric survey provides the foundation for success.