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[ollytheowl]

Hello

I have a 7 pane bay double glazed window. There are now cracks between the windows and the frames ( after 12 years)

Is this serious or will mastic fill if it is just cosmetic?

Regards , Olly

[stoneyboy]

ollytheowl,
"will mastic fill if it is just cosmetic" yes but use silicone frame seal
end

[ollytheowl]

Many thanks

Regards

Olly