Scrape off the old caulk with a steel putty knife such as hyde s 1 1 2.
Old doors and windows putty.
Window putty also known as glazing adheres and seals the window pane to the frame.
When window putty ages it becomes hard and difficult to remove by scraping.
This will probably be the larger pieces.
Step 2 heat putty with heat gun.
Before putting more putty on windows you will need to remove the old putty that is already there.
Whether you re replacing the glass panes or reglazing the windows you ll need to remove the old putty.
Putty is an ssh and telnet client developed originally by simon tatham for the windows platform.
Use a putty knife to break the existing putty up into smaller pieces.
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On older single pane windows the glass is usually surrounded by putty called glazing compound which holds the glass in place and seals out the weather.
Putty is open source software that is available with source code and is developed and supported by a group of volunteers.
Because window putty consists of linseed oil and clay this technique uses a mixture of linseed oil and bleach to break.
Take care not to scratch the glass when rubbing down.
Once dry rub down using a medium grade abrasive paper till smooth.
Using a putty knife or 5 in 1 dig out as much of the old putty as possible.
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This putty often lasts decades but over the years it becomes rock hard cracks and even falls off the window.
Single pane windows must be sealed into window frames to make them weatherproof.
Scrape away until you have removed what you can without going too hard.
Either acrylic latex silicone caulk or window putty also known as glazing putty are commonly used for this purpose.
Messy caulk line that detracts from the look of the window.
Old dry putty can be softened with bleach and linseed oil.
Blow off any remaining dust after you re done then wipe the surface with a little bit of boiled linseed oil and apply your new putty.
Leave the really stubborn stuff in place.
Clean off the excess oil from the glass with a little whiting and you re done.
The dos and don ts of caulking windows.