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Old 12-06-2010, 03:00 AM   #1
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Sealer over modifed bitumen ?


I bought this house in April 2010, It appears to have a fairly new patio roof. I suspect it was replaced in 2008 due to Hurrican Ike. the modified bitumen sheets. There are some mildew stains on the ceiling wood; apparently there was a leak at some point. In 7 months, there has been no signs of leakage. It does puddle slightly in the corresponding areas of mildew. I have some TPO from where a our offices were constructed. Should I just seal the roof and build up the areas where it is puddling with liquid bitumen or go ahead and lay down the TPO, Issealer recommended for the Modified bitumen ( MB ) ? Can I use TPO adhesive right over the modified bitumen. I will have to remove the drip edge to apply the TPO as whoever installed the MB, terminated the material flush with the edge of the patio, and as I understand it, the TPO would fold down and the drip edge mounted on top of that. Thanks. Kemah TX
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Old 12-06-2010, 08:55 PM   #2
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Sealer over modifed bitumen ?


Tpo and mod-bit are not compatible
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