If the installer is unwilling to fix the problems and you’re not interested in seeking remediation, you could hide a visually unpleasant floor. This will only work if the floor is structurally sound and the only issue you have is the way it looks. The easiest way to do this is to use large area rugs. You can also paint the floor, although that’s a labor-intensive job if you want to go the DIY route.

While it is possible to install carpet yourself, it is a challenging DIY project that requires precise measurement, proper cutting skills, and knowledge of correct installation techniques. The process involves multiple steps, including removing old flooring, installing underlayment and tack strips, and stretching the carpet to prevent wrinkles, which can take several days to complete.

Before starting, consider these factors:

• Warranty: Many manufacturers' warranties are voided if the carpet is not installed by a professional.

• Tools: You will need to buy or rent specialized equipment like a knee kicker, carpet stretcher, and seam roller.

• Complexity: DIY installation is most suitable for simple, straightforward rooms. Projects involving stairs or floor vents are significantly more difficult.

• Cost: While you can save on labor, the cost of tools plus the risk of expensive mistakes—which may require re-installation—can make hiring a professional more cost-effective in the long run.

Given the potential for errors, voided warranties, and the need for special tools, hiring a local carpet installer is often recommended to ensure the job is done correctly and safely.

In most cases, you do not need to put padding or underlayment under carpet tiles. Unlike traditional carpet, which requires a separate pad, carpet tiles are designed to be installed directly onto a firm subfloor like plywood, concrete, or tile. Many carpet tiles come with a built-in underlay and attach with peel-and-stick adhesive, double-sided carpet tape, or glue. For a more comfortable, cushioned feel, especially in residential settings, you can opt for padded carpet tiles that have a thicker underlay attached. While it's generally not recommended to install a separate pad, a compact underlayment might be used in some situations, though this typically requires professional installation. An acoustic underlay may also be considered in commercial spaces or multi-level homes where noise reduction is a priority.

Choosing the right carpet involves assessing room usage, desired comfort levels, durability requirements, and stylistic preferences. Carpet fiber types and density should also be considered during the decision-making process.