Drywall, also known as plasterboard or gypsum board, is a panel made of calcium sulfate dihydrate (gypsum) sandwiched between two layers of paper. It is widely used for interior walls and ceilings due to its affordability, ease of installation, and fire-resistant properties.

Measurement and Preparation:
Accurately measure the dimensions of the area where the drywall will be installed. Clear the space, remove any existing wall covering, and ensure the surface is clean and smooth.
Cutting and Fitting: Using a utility knife, cut the drywall to the required size. Ensure a snug fit around corners, windows, and doors.
Installation:
Secure the drywall panels to the wall studs or ceiling joists using drywall screws or nails. Leave a small gap between the panels for expansion.
Taping and Mudding:
Apply joint tape over the seams and cover it with joint compound (mud). Repeat this process multiple times to create a smooth, seamless finish.
Sanding and Finishing:
Once the joint compound is dry, sand the surface to remove any imperfections. Apply primer and paint as desired.

Drywall has inherent fire-resistant properties due to its gypsum content. It can delay the spread of fire and provide some protection for a limited time. However, for enhanced fire resistance, special types of drywall, such as Type X or Type C, can be used.

Double Layer Construction: Install two layers of drywall with Green Glue sound-damping compound sandwiched between them. This helps reduce sound transmission.
Soundproofing Compound: Apply a soundproofing compound directly to the existing drywall, which helps reduce noise by creating a sound barrier.
Additional Insulation: Install sound-absorbing insulation, such as mineral wool or acoustic foam, within the wall cavities to further enhance soundproofing.