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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.

Berber is a loop pile carpet known for its strength, durability, and distinct looped look. It can be made from a number of different carpet materials, including nylon and wool. However, Berber isn’t as soft as cut pile carpet, so it isn’t the best carpet for a bedroom (although it’s a good style of carpet for living rooms).

With that said, if you really like the look of Berber, you can still install it in your bedroom—it just might not be as comfortable on your feet as cut pile carpeting.

It is normal to glue carpet down, though it’s not the only or the most popular method of installing carpet. Modern techniques include tack strips and stretching the carpet, but you might still find glued carpet in older homes or a home with a DIY’d past. Removing a glued-down carpet will be harder compared to other methods of installation.

Professional installation ensures seamless fitting, extended carpet life, and compliance with workplace standards.