SAP calculations, Level 2 thermographic surveys, Part F ventilation testing, building compliance and health & safety consultancy — delivered personally, on time.
Every service is delivered personally by a qualified assessor — no subcontracting, no delays.
Level 2 UKTA-certified infrared surveys identifying heat loss, insulation defects, air leakage and moisture ingress. BREEAM and Part L compliant with detailed U-value and fabric improvement reporting.
SAP and Home Energy Model calculations for Part L 2021 and the Future Homes Standard (Part L 2026). Supporting new dwellings from planning through to Building Control sign-off and EPC production.
Part F Building Regulations ventilation commissioning and compliance testing for new builds, conversions and refurbishments. Air tightness testing also available.
Supporting the retrofit industry with detailed Level 2 thermography assessments and U-value calculations for fabric improvement — identifying insulation, heat pump readiness and ventilation priorities.
Site and building inspections, risk assessments and method statements for SMEs — providing the H&S documentation your business needs to operate safely and compliantly.
Energy calculations, glazing compliance, Part G water calculations, condensation risk analysis and construction logistics — covering all compliance stages from planning through to completion.
"Very efficient and knowledgeable. GTD provided exactly what we needed to get our project signed off without delay."
"Always reliable and they understand client demand. GTD consistently turn around calculations faster than any other assessor we've used."
"GTD provides strategic information on fabric performance and energy compliance that keeps our projects on track through Building Control. An invaluable partner."
Whether you need a thermographic survey, SAP calculation, or building compliance advice — GTD will respond the same working day.
Six specialist services covering the full energy compliance and building safety lifecycle — all delivered personally by a qualified assessor.
Infrared thermal imaging surveys identifying heat loss, insulation gaps, moisture ingress, air leakage and thermal bridging. All reports comply with BS EN 13187 and are accepted for BREEAM MAN 04 credits, Part L compliance, and PAS 2035 retrofit assessments. As a UKTA Level 2 certified assessor, GTD satisfies requirements that Level 1 thermographers cannot meet.
Full thermography detailsGTD Energy Compliance provides both SAP (Standard Assessment Procedure) and HEM (Home Energy Model) calculations for new dwellings, supporting compliance with Part L 2021 and the Future Homes Standard (Part L 2026). The Future Homes Standard requires a significant uplift in fabric performance and low-carbon heating — HEM replaces SAP as the primary compliance tool for new homes built to these requirements. GTD supports architects, developers and self-builders through design-stage calculations, as-built compliance, planning submissions, Building Control sign-off and EPC production. Fast turnaround to keep your project on schedule.
Part F Building Regulations ventilation commissioning and compliance testing for new builds, conversions and refurbishments. Air flow rate testing and documentation to satisfy Building Control. Air tightness testing available in combination.
Supporting the retrofit industry with detailed Level 2 thermography assessments and U-value calculations for fabric improvement. GTD works with retrofit coordinators, ECO4 installers and housing associations to identify insulation priorities, heat pump readiness and ventilation requirements — providing the diagnostic evidence needed to design and deliver effective retrofit programmes.
Site and building inspections, risk assessments and method statements for SMEs — providing the health and safety documentation your business needs to operate safely and meet regulatory requirements. Clear, practical, and delivered without jargon.
A comprehensive suite of building regulation compliance services covering all stages from planning through to completion — for extensions, conversions, new builds and change of use projects.
Non-invasive infrared thermal imaging for buildings — identifying heat loss, insulation defects, air leakage and moisture before they become costly problems.
A thermographic survey uses a specialist infrared camera to measure surface temperatures across a building's fabric. Variations in temperature reveal exactly where heat is escaping, where insulation has failed, where moisture has penetrated, and where air is leaking through the structure.
Unlike visual inspections, thermography provides objective, photographic evidence that is accepted by Building Control, BREEAM assessors, and retrofit coordinators. It is non-invasive and does not damage the building fabric.
As a UKTA Level 2 certified thermographer, GTD Energy Compliance produces reports compliant with BS EN 13187 and accepted for BREEAM MAN 04 assessment credits, Part L compliance, and PAS 2035 retrofit assessments. All surveys are accompanied by U-value calculations for fabric improvement where required.
BREEAM's technical manual (SD5076) requires thermographic surveys for assessment credits to be completed by a UKTA-approved Level 2 thermographic surveyor, certified to ISO 18436-7:2008. Level 1 qualifications are not sufficient for BREEAM credit purposes.
GTD Energy Compliance holds a UKTA Level 2 certification — accepted by BREEAM assessors, retrofit coordinators, and housing associations who need compliant reports that will stand scrutiny.
Missing, damaged or incorrectly installed insulation in walls, roofs and floors — including cavity wall fill voids invisible from inside. U-value calculations produced for identified areas.
Unintended gaps in the building envelope where conditioned air escapes — a major cause of energy waste and condensation risk, particularly around junctions and service penetrations.
Water penetration and areas at risk of condensation, damp or mould — often symptomless until structural damage has occurred. Part C condensation risk can be assessed alongside.
Structural elements conducting heat through the fabric — a common cause of cold spots and Psi value failures. U-value calculations provided for remediation planning.
Seal failures, draughts and framing cold bridges around glazed units — linked directly to glazing calculation compliance where relevant.
Wet insulation, delamination and ponding water in flat roofs, clearly visible in thermal imaging but invisible from ground level or visual inspection alone.
BREEAM MAN 04 credit and Part L post-construction compliance for new residential and commercial schemes.
Portfolio stock condition surveys — energy benchmarking and retrofit prioritisation at scale.
PAS 2035 fabric assessments with U-value calculations before ECO4 measures, insulation upgrades and heat pump installations.
Pre-purchase surveys, heat loss identification and dispute evidence before committing to insulation or heating upgrades.
Founded on one principle: GTD — We Get It Done. Expert energy compliance and safety services, delivered personally, on time, every time.
GTD Energy Compliance was established to give construction professionals, property developers, landlords and local authorities access to expert energy compliance services — without the delays, miscommunication or cost of a large consultancy.
With 18+ years of experience across energy compliance, health and safety, sustainability and environmental consultancy, every project is handled directly by a qualified assessor from enquiry through to report delivery.
GTD operates nationally, with a strong base in Peterborough and Hertfordshire, and is actively supporting the UK retrofit supply chain through thermographic surveys and PAS 2035-aligned assessments.
Technical guidance, regulation updates and energy compliance insights from GTD Energy Compliance.
The Future Homes Standard (FHS) represents the most significant change to new-build energy regulations in a generation. Here is what every developer, architect and energy assessor needs to know — including the key dates, technical requirements, and how GTD Energy Compliance can help you stay ahead.
Solar PV installations become functionally mandatory, requiring generation capacity equivalent to 40% of the ground floor area.
Fossil-fuel systems (gas, oil and LPG boilers) are effectively barred by carbon reduction targets, making air source heat pumps the default choice.
Wall insulation standards and air permeability thresholds are tightened significantly, necessitating mechanical ventilation (MVHR) to maintain air quality.
GTD Energy Compliance provides both SAP (Part L 2021) and HEM (Home Energy Model) calculations for the Future Homes Standard — helping developers plan ahead and ensure every new-build scheme is compliant from day one.
A thermographic survey needs a minimum 10°C temperature differential. Here's what that means for your project timeline and retrofit programme.
PAS 2035 requires specific evidence for fabric assessments, including U-value calculations. A UKTA Level 2 thermographer is a critical part of the process.
The Future Homes Standard (Part L 2026) replaces SAP with the Home Energy Model for new dwellings. Here's a plain-English guide to what changes and how GTD can help you stay compliant.
Converting a house to multiple apartments triggers a range of compliance obligations — from Part G water calculations to energy assessments and condensation risk analysis.
Part G of the Building Regulations sets out water efficiency requirements for new dwellings and certain conversions. Here's when a water calculation is required and what it involves.
Many small businesses carry more H&S risk than they realise. Here's a practical guide to what site inspections, risk assessments and method statements should cover.
Key regulations, standards and guidance documents for energy compliance, thermography and building regulations in the built environment.
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The optimal thermographic survey window runs October–April. Contact us now to secure your place in the schedule.
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