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Promoting the highest industry standards
When homeowners use a GGF Member company to carry out windows, doors or conservatory work, they are investing in professional workmanship and service of the very highest standard. Companies requiring flat glass or glazing products from a GGF Member can also be assured they are dealing with the best companies in the industry. So if you are wanting to improve your home or property, or simply need a glass and glazing product or service, why not browse our directory and contact a GGF Member Company in your area.
Glass & Glazing Consultancy & Inspection Services
Expert technical consultancy from the GGF—supporting inspections, compliance, and design validation across glazing, fenestration, and new build projects
Window & Door Inspections
Expert Witness Reports – Comprehensive on-site inspections covering visual quality, installation standards, and compliance with Building Regulations and GGF guidelines. CPR Part 35 compliant and court-admissible. Supports homeowners and installers in disputes over poor installation, condensation or compliance issues. Prices from £1,399.
- CPR 35 Reports for legal disputes
- Fully independent & impartial
- Includes detailed analysis and recommendations
Desktop Assessments
Desktop assessments may be required to prove compliance or demonstrate that a glazing specification is suitable for the desired application. GGF Consultancy can assist with loading calculations, remote glazing risk assessments (e.g. based upon confirmed glass specifications and accurate as-built drawings), or auditing for correct documentation to demonstrate compliance.
- Static calculations for loading resistance
- Remote glazing risk assessment
- Condensation prediction
- CE / UKCA audits
Heat Soak Oven Calibration
Calibration of heat soak ovens is essential for producers to demonstrate compliance. Our consultancy service offers full on-site calibration to EN 14179-1, together with recommendations on best practice and equipment improvements where relevant. All calibration work is fully documented to support audit and regulatory requirements.
- Heat soak oven calibration in accordance with EN 14179-1
- Understand potential performance degradation of oven over time
- Full & detailed calibration report
Quality of installation
An inspection which focuses on the standard of the installation, for example if there are concerns over the correct sizing of windows or doors, or where the junction between glazing and structure is unsightly. Homeowner Consultancy Commercial Inspection
Manufacturing quality
An inspection which focuses specifically on the quality of the glazing products used, for example if a transom or mullion surface is damaged upon delivery, or where the detail of a joint on framing is questionable. Commercial Inspection
Visual quality – Framing
An inspection which focuses on the visual quality of the framing used, for example if a transom or mullion surface is discoloured when the work is completed, or where surfaces of a window frame or infill on a composite door are marked or scratched. Homeowner Consultancy Commercial Inspection
Visual quality – Glass
An inspection which focuses on the visual quality of the glass pane(s) used, for example if a glass surface is marked or blotchy, or where there is distortion when looking through the glass. Homeowner Consultancy Commercial Inspection
Air / Water penetration
An inspection which aims to understand the most likely cause of excess air or water penetration through the glazed element, for example if a water is getting into a building beneath a door, of if a significant draught is felt around a window. Homeowner Consultancy Commercial Inspection
Breakage assessment – Glass
An inspection which aims to understand the most likely cause of the glass pane(s) fracture, for example if a glass pane has unaccountably shattered or developed a crack. Homeowner Consultancy Commercial Inspection
Laboratory Testing
For example, after a breakage assessment testing may be requested to confirmed the composition of an inclusion Calculations
Static Calculations
For example, to determine barrier loading resistance to glass panes Calculations
Condensation Prediction Calculations
For example, to understand the likelihood on condensation at design stage Calculations
Heat-Soak Oven Calibration
A regular requirement to ensure correct heat-soak testing of thermally toughened glass panes Calculations
Inspection & Consultancy Services
Get expert support from the GGF Technical Team. Book your consultation today to resolve disputes, validate compliance, and safeguard your project with industry-leading inspections, reports, and calculations tailored to glazing, fenestration, and building regulation requirements.
