Looking for some assistance with this scanerio to ensure I'm on the right path. Please provide a thorough breakdown so I'm able to learn and gain a better understanding. Thank you

The Situation: You are the project manager for constructing a custom house. On one of your Monday morning inspections of the progress, you notice a spot of flaking paint on the outside of the house. The outside was painted on Friday. On closer inspection, you see that the entire north side of the house has issues with the paint peeling and flaking. The other sides of the house appear fine. The Assignment: Select one or more of the 7QC tools to investigate this problem. What else would you do? Your response should consist of a minimum of 500 words and include at least three credible references in addition to the PMBOKGuide with at least one of these being a peer-reviewed journal article. Properly cite your response