Author Topic: Removing old door window putty/silicon  (Read 11314 times)

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Offline Untidy Shop

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Removing old door window putty/silicon
« on: December 18, 2013, 10:28 PM »


I am currently restoring an old cedar door.

In attempting to scrape old putty (and silicon from someone's 1/2 backed restoration), I have just cracked the glass. Fortunately the glass only covers top 1/3 and I am sure it can be replaced.

However for next time, and for removing what's left, does anyone know what will soften hard putty, or is it a matter of scraping,scrapping?!

It has just hit 40C here so will not be back to it today.

With appreciation.
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Offline Peter Halle

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Re: Removing old door window putty/silicon
« Reply #1 on: December 19, 2013, 12:58 AM »
A heat gun will usually soften old glazing compound and allow it to be scraped out.  To be honest I haven't tried it for silicone.  There are products out know that will soften silicone to allow for better / easier removal.

Peter

Offline jools

  • Posts: 258
Re: Removing old door window putty/silicon
« Reply #2 on: December 19, 2013, 01:56 AM »
Heat guns and glass don't mix so only really useful on cleaning rebate after glass removal.  Softness achieved with heat depends on oil content/age weathering etc. I usually remove old potty with a hacking knife if glass not antique,and retained. If glass wanted remove with a Fein mm  Silicone responds better to mechanical scraping after it has been heated
Regards
Jools
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Offline Motown

  • Posts: 200
Re: Removing old door window putty/silicon
« Reply #3 on: December 19, 2013, 04:47 AM »
I have just done this for french casement windows (swing open versus up and down) and because their were 137 total windows I used a piece of scrap ply and wrapped it in tin foil to protect the glass from cracking as i worked to remove the putty. Worked well.

Offline Untidy Shop

  • Posts: 2745
Re: Removing old door window putty/silicon
« Reply #4 on: December 20, 2013, 07:07 AM »

Thankyou all for your ideas/experiences, much appreciated. [smile]
If you don't like Signatures, just go to Look and Layout and tick No Signatures.

“The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed.”
― Robert M. Pirsig, Zen and the Art of Motorcycle Maintenance: An Inquiry Into Values

Offline R. Beverly

  • Posts: 9
Re: Removing old door window putty/silicon
« Reply #5 on: December 23, 2013, 11:32 AM »
Thirty years ago, I re-glazed an old house full of windows with the tool shown.  No longer manufactured, but it looks like they show up on eBay occasionally, selling for around $50.  It appears parts are still available; Google G&H Electric Putty Softener.

This tool works very well - no damage to glass, no damage to wood.  I would bet, however, that the insulating elements are asbestos.

Dick Beverly

Offline lillianhofstader

  • Posts: 1
Re: Removing old door window putty/silicon
« Reply #6 on: February 14, 2014, 12:32 AM »
My husband had used prazi usa's putty remover, it is attached to a power drill to remove stubborn putty. It also consist of a handle that helps the user to guide the drill, and the tool's rotating chisel cuts the putty from the window.

Offline Untidy Shop

  • Posts: 2745
Re: Removing old door window putty/silicon
« Reply #7 on: February 14, 2014, 02:18 AM »


Thanks for that Lilian.

In the end, I found that Selleys Putty Remover was effective.


And welcome to the FOG.   [smile]
If you don't like Signatures, just go to Look and Layout and tick No Signatures.

“The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed.”
― Robert M. Pirsig, Zen and the Art of Motorcycle Maintenance: An Inquiry Into Values