Mold removal and prevention in poured concrete walls and slab?
Need some help on a take home exam question. Thanks in advance.
Construction is 80% complete on a 100,000 sf building (like the new bioscience building you toured). The architect was performing an inspection when a concern was raised about the exterior wall framing. There seems to be some mold starting to appear between the insulation and the concrete exterior walls and also the exterior sheathing on the upper walls. The mold is not everywhere, very spotty, but located on every floor.
The typical exterior walls in the basement are 8” cast in place concrete with 6”metal studs and R-19 insulation. The upper floors’ exterior walls consist of 18 gauge metal studs with R-19 insulation with a 6 mil draped vapor retarder. The exterior sheathing is 5/8 USG exterior Fiberock brand Aqua-Tough sheathing panels and the interior is 5/8 USG Fiberock brand Abuse-Resistant Interior Panels.
My group has some ideas but no structure to our answer yet. Any help is greatly appreciated.
Home Metal Casting
Posted in Other - Home & Garden | 
Tags: exterior, exterior sheathing, insulation, Metal, sheathing panels, usg fiberock
One Response to “Mold removal and prevention in poured concrete walls and slab?”
The architech should know better than to buil this way…If he/she knew how to build green for today they would have insisted on using INTEGRA SPEC..there would be no way there would be mould and you would have a much more efficient building….check it out…..with your problem,the most common cause is they pour today,then put the vapour retarder/barrier up before the concrete can come anywhere near a cure…(28 days)