New Stair Treads Over Old Cutback

 
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Old 03-28-2009, 01:00 PM   #1
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New Stair Treads Over Old Cutback


Hello, I need some advice for installing new johnsonite stair treads on steel, open steps with cutback? now adhering existing vinyl treads.
Can I encapsulate with ardex all the existing mastic? or do I need to remove some mastic then encapsulate? The steps are 7ft wide and flex slightly. about 90 stairs.
Thanks for any help

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Old 03-28-2009, 11:04 PM   #2
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Re: New Stair Treads Over Old Cutback


Try a bond test with your proposed adhesive. See if it sticks.
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Old 04-02-2009, 08:36 PM   #3
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Re: New Stair Treads Over Old Cutback


Hi.
Test it and if you have a slight dout remove the mastic this is 90 stairs you don't want this spets to move anywhere.
TEst it well.

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