Aluminium Patent Glazing systems are tried and tested. Many installations installed forty to fifty years ago are still giving adequate service, although now are likely to require refurbishment. Railway stations are good examples. We suggest a 35 year design life is realistic for aluminium patent glazing and single glazing. For double glazed situations, advice should be sort from the sealed unit manufacturer as many double glazed units are only warranted for 5 years. Whilst the weather tightness & integrity of the glass roof is likely to remain viable for 35 years, it is likely the thermal performance of the double glazed units will decrease. Please refer to our Cleaning & Maintenance Manual for further information. Life cycle costs are exceedingly favourable due to the low-maintenance nature of Lonsdale systems. However, care should be taken at the design stage to consider access arrangements to avoid costly scaffolding costs that may be required to ensure maintenance may be carried out safely.
Life expectancy of items featured in our systems are suggested below:
Aluminium Extrusion Aluminium Indefinite
Powder Coating Polyester Minimum 25 years (Matt)
Fixing Brackets Aluminium Indefinite
Fixing Screws Stainless Steel Minimum 60 years
PVC-U Extrusion PVC-U Minimum 25 years
EPDM Gaskets EPDM Minimum 25 years
Thermal Break Polyamide Minimum 25 years
Silicone Weather Seal Silicone Minimum 25 years
The above are reasonable life expectations for materials installed in normal and nonaggressive environments when maintained within the manufacturer’s recommendations. Materials installed in marine or polluted environments may not last as long. This statement does not constitute a guarantee and a copy of our Warranty is available on request.