Our Services
We provide fire engineering, performance based assessments, CFD modelling, façade risk assessment and building physics services to help clients achieve compliance, resolve complex design challenges, and deliver safe, buildable solutions.
Fire Engineering Consultancy
At Thermal-Flow Consultants, we provide fire safety engineering services to support the design, assessment, and regulatory approval of buildings.
We develop clear and compliant fire strategies, combining engineering judgement with advanced analysis where required, to address complex design challenges and demonstrate compliance with UK fire safety guidance.
We deliver;
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Fire Strategy Reports (Approved Document B, BS 9991, BS 9999)
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Performance-Based Design (BS 7974 approach)
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Means of Escape and Travel Distance Assessments
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Compartmentation and Fire Protection Strategy
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Gateway 2 / Building Safety Regulator support
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Review of smoke control and fire safety systems
Our approach ensures that fire safety is integrated into the design from an early stage, delivering solutions that are both compliant and practical to implement.
Fire and Smoke Modelling
We provide advanced CFD modelling to assess fire and smoke behaviour within buildings, supporting performance-based fire engineering, regulatory compliance, building control approval, and gateway submissions.
We analyse smoke movement, heat transfer, and tenability conditions to evaluate smoke control systems, justify design decisions, and demonstrate safe means of escape where prescriptive guidance cannot be met.
We deliver;
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Smoke spread and tenability analysis
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Smoke control systems design and validation
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ASET / RSET support and performance-based assessments
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Extended travel distance justification
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Corridor clear-down and ventilation performance
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Scenario-based modelling for fire and emergency conditions
Our modelling provides clear, evidence-based insight to support compliant, efficient, and buildable fire safety solutions.
Fire Risk Assessments of External Walls (FRAEW / PAS 9980)
Thermal-Flow Consultants provides External Wall Fire Risk Assessments (FRAEW) in accordance with PAS 9980 to evaluate fire risk associated with external wall construction.
We support building owners, managing agents, and design teams in assessing façade systems, identifying risks, and developing proportionate remediation strategies to support EWS1 certification and regulatory compliance.
We support;
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PAS 9980-compliant façade fire risk assessments
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EWS1 support and documentation
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Cladding system review and risk classification
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Identification of cavity barrier defects and fire spread pathways
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Remediation strategy development and technical justification
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Engineering assessment of non-standard or legacy façade systems
Our assessments are evidence-based and proportionate, helping clients avoid unnecessary remediation while maintaining compliance and ensuring occupant safety.
Egress and Evacuation Modelling
We provide evacuation and egress modelling to assess occupant movement and demonstrate safe means of escape under fire conditions.
By using advanced simulation tools, we evaluate how occupants respond, move, and evacuate buildings, supporting performance-based design and compliance with UK fire safety guidance.
We deliver;
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ASET / RSET analysis and comparison
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Occupant movement and evacuation time assessment
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Evaluation of extended travel distances and phased evacuation strategies
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Assessment of stair capacity and exit provision
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Scenario-based modelling for fire and emergency conditions
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Support for performance-based fire engineering design
Our analysis provides clear, evidence-based justification to support fire strategy decisions, ensuring safe evacuation while enabling efficient and flexible building design.
Fire Risk
Exposure Assessment (Structures)
We provide fire risk exposure assessments to evaluate the impact of fire on structural elements and building fabric under realistic fire scenarios.
We assess thermal exposure, heat transfer, and fire development to understand how structural components respond to fire conditions. This enables informed decision-making on fire protection requirements, structural resilience, and compliance with fire safety objectives.
We support;
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Assessment of structural exposure to internal and external fires
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Evaluation of heat flux, temperature build-up, and fire spread
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Identification of vulnerable structural elements and critical locations
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Engineering justification of fire protection requirements
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Performance-based assessment of non-standard or existing structures
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Support for façade-related fire exposure and structural interaction
This assessment provides evidence-based insight into structural fire performance, supporting safe, efficient, and proportionate fire protection strategies.
Data Centre Thermal & Heat Management
We provide thermal analysis and CFD modelling needed to assess heat generation, airflow distribution, and cooling performance within data center environments.
Our assessments support the design and optimization of data center cooling strategies, ensuring efficient heat removal, prevention of hotspots, and reliable system performance under operational and failure conditions.
We deliver;
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CFD modelling of airflow and temperature distribution
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Hot aisle / cold aisle containment analysis
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Identification and mitigation of thermal hotspots
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Cooling system performance assessment (CRAC / CRAH units)
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Failure scenario modelling (e.g. cooling loss, power outage)
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Optimization of equipment layout and airflow management
Our analysis enables efficient, resilient, and scalable data center designs, supporting operational reliability and energy performance.
Thermal Bridging &
U-Value Analysis
We provide thermal bridging and U-value analysis to assess heat loss through building fabric and support compliant, energy-efficient envelope design.
We evaluate junctions, interfaces, and construction build-ups to identify areas of increased heat transfer, reduce condensation risk, and improve overall thermal performance. Our analysis supports design teams in achieving robust details that align with Building Regulations and project performance targets.
We support;
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U-value calculations for walls, roofs, floors, and glazing
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Thermal bridge analysis of junctions and interfaces
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Ψ-value calculations for SAP and SBEM inputs
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Assessment of heat loss and local surface temperature factors
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Condensation risk reduction through improved detailing
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Design-stage support for compliant and buildable envelope solutions
Our assessments provide clear, evidence-based guidance to help optimise fabric performance, reduce energy loss, and improve build quality.
Hygrothermal Condensation Risk Assessment
We provide hygrothermal condensation risk assessments to evaluate moisture behaviour within building assemblies and prevent issues such as condensation, mould growth, and long-term material degradation.
Using advanced hygrothermal modelling in accordance with BS 5250, BS EN 13788, and BS EN 15026, we simulate heat and moisture transfer through construction build-ups under realistic environmental conditions.
This enables identification of both interstitial and surface condensation risks across a range of internal loads and external climates.
Our assessments determine whether proposed materials and assemblies can perform reliably over time without compromising durability, indoor air quality, or overall building performance.
Wind Microclimate Modelling
Our wind microclimate modeling service assesses the impact of building designs on surrounding airflow patterns to optimize pedestrian comfort, safety, and structural resilience.
By using Computational Fluid Dynamics (CFD) simulations, we analyze wind behavior around buildings, including wind speed at pedestrian level in accordance to Lawson Criteria to address potential microclimate issues such as wind discomfort and high-speed gusts.
Our wind microclimate also assesses pressure zones on building surfaces in accordance to Eurocode 1 (EN 1991-1-4) and its turbulence effects.
This service is essential for urban planners, architects, and developers working on high-rise buildings or complex urban layouts, ensuring the design promotes a safe and comfortable outdoor environment for pedestrians and minimizes adverse wind effects on neighboring structures.