New Putty Over Old

Can I apply new putty over old putty that is rock hard and has been overpainted without stripping out the old putty on Bay Window Mullions??

7 Answers

JL Windows and Doors
1 Reviews, 100% Positive
You can but the putty will not adhere properly. It is good practice to remove old putty first.
23rd Aug 2019
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AdjAbuilder Ltd
1 Reviews, 100% Positive
Sharp implement at least scrap of paint.
Make sure you apply a layer of new putty
23rd Aug 2019
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So long as the old putty is secure it should be fine
1st Oct 2019
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LOCKSMITH & WINDOW DOCTOR
1 Reviews, 100% Positive
Hi no you need to remove old putty if you put new putty over the old it will not bond
19th Dec 2019
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QUAYGLASS
0 Reviews
Yes you can use new putty over old
29th May 2020
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RB Windows
1 Reviews, 100% Positive
yes u can
13th Jun 2020
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Sharp chisel and chip old putty off ( new putty won’t bond to old hard putty )
13th Jul 2020
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