Most old houses are made of wood flooring which is good because it can last for a long period of time. They are durable but quite expensive, well it actually depends to the type of hardwood. There are solid ones which are fully made of hardwood and there are refinishing type which is made of part wooded materials and hardwood. Example of wooded materials are fiberboard or plywood, floor refinishing is the cheap alternative of wood flooring not as durable of the solid hardwood but it can still last for a long time.
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Hardwood floors are very homely and classy compared to tiled and cemented floors. So if you are planning to switch to hardwood flooring you should start browsing online to compare prices, you can find a lot of stores online that offer affordable hardwood flooring refinishing, they also offer installation services.