Guided specification · Save multiple sizes · Supplier-confirmed quotes
Your glass, step by step
Build your specification
Choose what you know. Leave the rest for a supplier to advise. Add different sizes as separate basket lines.
No account needed to configure
Before you choose
The decisions that matter
01
Check the exposure
A sheltered pane may not receive enough rain to rinse the surface. Flag overhangs and low roof slopes.
02
Keep the coating clear
Incompatible installation materials can mask the surface function. Follow the selected product’s handling guidance.
Ready for a useful supplier quote
Self-cleaning is not maintenance-free and does not replace suitable drainage.
Installer must use compatible gaskets, sealants and cleaning methods.
Research behind these choices
Reviewed 23 October 2026. Manufacturer guidance and supplier ordering pages inform these design questions. Agree the final construction and project requirements with your supplier.
Existing Pilkington Spectrum reference data for named builds. Values apply only to the listed construction; these rows are not results for your selection above. NPD means no declared value in this dataset.
Activ Clear — certified values per thickness
Activ Clear — certified values per thickness
Reference build / glass
U / Ug (W/m²K)
Light (%)
g-value
Activ Clear · 3 mm
5.8
85
0.83
Activ Clear · 4 mm
5.8
85
0.82
Activ Clear · 6 mm
5.7
84
0.8
Activ Clear · 8 mm
5.6
83
0.78
Activ Clear · 10 mm
5.6
83
0.77
Useful questions
Can I get a quote before I know every detail?
Yes. Choose Help me choose where you need advice, or request a site measurement. Suppliers can review the brief; a firm manufacturing price needs an agreed final specification.
Does adding a panel place an order?
No. It saves a specification in your quote basket. Review the basket and provide your delivery details to request supplier quotes. Your configuration does not approve the product for installation.
What should I confirm for self-cleaning glass?
Self-cleaning is not maintenance-free and does not replace suitable drainage. Installer must use compatible gaskets, sealants and cleaning methods.