Retrofit Remedial Works & ECO4 Corrections​

A trusted remedial delivery partner for complex ECO and retrofit failures, providing system-led corrective works that restore compliance, performance, and long-term building integrity.

ECO4 & GBIS Insulation Performance Testing, Fixing & Remedial.

We are a specialist remedial delivery partner for complex retrofit and ECO non-compliant works, supporting housing providers, councils, and energy suppliers where previous installations have failed to meet expected standards.

We act as the remedial partner for major utilities on complex works and non-compliances, trusted to resolve high-risk, technically challenging retrofit issues through a structured, system-led approach.

Our Remedial Approach

Rather than treating defects in isolation, we assess the whole building system — fabric, ventilation, and heating — to identify root causes and performance gaps. From this, we develop clear remedial plans aligned with PAS 2035 principles and funding compliance requirements.

What We Address

We take a pragmatic approach to address non-compliance, starting with a full whole-house assessment on thermal performance and effectiveness of the measures. 

Failed or Poorly Installed Insulation

Where insulation measures have been incorrectly specified or installed, leading to heat loss, cold bridging, or performance below design expectations.

Condensation, Damp & Moisture Risk

Retrofit failures often create unintended moisture pathways. We address condensation, mould growth, and damp issues by correcting fabric defects and rebalancing ventilation and airflow.

Thermal Bridging & Heat Loss

Inconsistent insulation coverage and detailing can cause significant thermal bridging. We redesign and remediate junctions and interfaces to improve overall building performance.

Key Benefits

Retrofit failures are often caused by poor system design, incorrect installation, or a lack of consideration for ventilation and moisture movement. Many ECO installations focused on individual measures rather than whole-house performance. We assess the full building system to identify root causes before implementing corrective solutions.
Yes. Incorrect insulation or ventilation can trap moisture, leading to condensation, mould growth, and long-term fabric damage. Our remedial approach identifies where moisture pathways have been disrupted and rebalances insulation and ventilation to restore healthy internal conditions.
In most cases, yes. Through detailed surveys and system-level assessment, we design targeted remedial plans that correct defects, restore performance, and bring installations back into compliance with current standards.
We understand that repeat works can be frustrating. Our remedial interventions are carefully planned to minimise disruption, focusing only on what is necessary to resolve the issue properly and permanently.
All remedial works are designed using PAS 2035 principles, with clear documentation, quality assurance, and verification. This ensures works are audit-ready and aligned with funding and regulatory requirements.
Not always. Where retrofit works have failed due to poor design, incorrect installation, or non-compliance with scheme requirements, liability may rest with the original installer or delivery chain. As part of our remedial service, we can investigate whether the works meet required standards and whether a remedial or liability claim can be raised.

We support this process by compiling technical evidence and liaising with TrustMark and associated scheme bodies where applicable. This helps determine whether remedial responsibility can be attributed appropriately before costs are incurred by the property owner.

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