Is this wall above ground or in a basement? Water penetration isn't good so you need to find an inspector (home insp or mold insp) who can examine your roof, gutters, siding and who has an "thermal imaging camera". Lesley is on the mark about mold which needs moisture to grow. So, have a pro get up on your roof especially in the area near the water stains. Another tip, get it done before winter and bank on tearing out that wall to treat the wood studs with bleach to kill anything.

Sir, What is the purpose you are planning to put these panels to use. Please be aware that GFRG panels are a good option for construction but they need a thorough experienced professional for installation. Otherwise they may end up being a costly affair. Thanks, Amit CORNERSTONE DESIGNS Bangalore.

You can use Drywall, also known as gypsum board or plasterboard Plywood Curtains Or simply use pot plants to create impact and atmosphere

Hello Sujeeta, Take care of the waves in the wall while preparing the base . The reason behind this is, when you finish the wall with the wall paper the waves in the wall is noticeable or the gap creates the bubbles in that particular area. Practically go for the pop putty or the gypsum sheet fixed for the perfect finish.