By Adalheid Voigt. Midcentury. At Wednesday, January 09th 2019, 01:26:31 AM.
There are alternatives to kiln-dried hardwood frames. Metal sofa frames are available, too, but metal can be prone to oxidation along with seasonal changes. Changes in humidity can affect metal frames, so look for one that has been treated to protect against atmospheric changes. Plywood frames as long as they are thick enough can also work well. As a matter of fact, many leading manufacturers now use well-constructed plywood frames.
How long a sofa will last and retain its shape depends largely on the frame, and a high-quality sofa always has a strong, sturdy one: The best frame is made out of kiln-dried hardwood. The process of kiln drying removes all moisture from the wood, enabling it to retain its shape and stability over a long period of time. A frame made of green wood can shrink or crack as it dries. Softwood can bend and break easily, while knotted wood is prone to cracks.
Make sure that you are getting high-density foam because lesser-quality foam can start breaking down pretty quickly, causing sags, and the fabric does not stay taut when that happens. If you want a really soft seat, consider down cushions. These are considered to be the premium choice, and as you might imagine they are also among the most expensive. High-quality cushions have down-proof ticking under the upholstery fabric to prevent feathers from poking through. Cushions filled just with down are high-maintenance and can need daily attention.