Can you insulate a concrete block basement walls with only rockwool?
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Can you insulate a concrete block basement walls with only rockwool?
Aarne Valikangas
Jan. 1, 2021Last updated: Jan. 8, 2021
Hello,
我们正在重新装修地下室(多伦多第5区)，由于大量的水分渗透和霉菌问题，我们在预算有限的情况下拆除了整个地下室。基础/墙壁是混凝土块，我们有两面用塑料薄膜做内部排水和水池泵，一面外墙防水，一面不防水但也没有水分渗透问题。我们在咨询了几个来源后的计划是用2x4s油漆防霉底漆(压力处理和底架垫片接触混凝土)，在砌块墙(或防水膜)和框架之间有1英寸的空气间隙，然后安装矿棉和防霉干墙，用乳胶漆油漆。地板将在混凝土板和乙烯基板地板上铺设凹垫。目前没有密封墙壁的计划，我们在地板托梁未完工的天花板附近留下了大量的空气间隙。我们会有一台除湿机。这里有什么能让霉菌再次生长的迹象吗?提前谢谢!
One thing that concerns me is the mention of it being an inch away from the wall, along with you saying you weren’t going to seal the wall. If you have a waterproof membrane against the block wall then there is no reason you can’t put the stud wall right against it rather than leaving an airspace. The point being, if you leave an airspace and the wall is not sealed, sounds to me there is a chance you may have an air convection behind the wall. The effects of the insulation could be significantly reduced if so. If air can get behind, then it would be more like a free-standing wall of insulation in the middle of the room. Just make sure no air flows in behind the stud wall.
Sometimes insulating a cinderblock foundation wall for the first time when it has never been insulated can cause cracking as it suddenly experiences freezing. Butr if your basement wall was previously insulated then you should be fine, but take advantage of the fact that it is open to check the condition and make sure there is no cracking before you re-insulate it.