Dot and dab ground floor by window

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Jimbo95

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One whole room and one exterior (window) wall. Can you dot and dab on ground floor by the whole room ? Or should I sand and cement instead due to moisture. Would rather dot and dab it’s quicker. Any tips? Thanks
 
One whole room and one exterior (window) wall. Can you dot and dab on ground floor by the whole room ? Or should I sand and cement instead due to moisture. Would rather dot and dab it’s quicker. Any tips? Thanks
wall construction? Dictates
 
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