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  • That Hodgson's product, (which doesn't seem to be on their website), contains 'drying oil', typically Linseed oil, rather than being the non-setting, (i.e non-curing), butyl based 'putty'.

    Any cartridge silicone you can buy will have poor long term adhesion to unprimed Crittall windows.
    You are better off with a tube of modified silicone. Support a firm that supports your favourite sport and treat yourself to some Soudal Fix-all.

  • Got some high modulus stuff from a glazing company specifically for the job. Frames have been stripped/mordant solution/zinc plumbate primed and painted.
    This is for the inside not outside BTW.

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