The weight of a grand piano can be anywhere up to 1,000 pounds. Distributed between four legs this works out on average to nearly 250 pounds concentrated under each leg. However the total weight of a piano is distributed over an area – a larger area in the case of a grand and baby grand as compared with a stand–up piano. So while an individual leg might carry 250 lbs., the overall weight of the piano is distributed over the total floor area enclosed by the legs. This would mean that the load is adequately distributed, from the point of view of the floor structure.

Many different flooring types and subfloors will be able to sustain the localized weight of a piano. Most of the problems arise with transportation to the place where the piano is to stand. Suitable care has to be taken that the piano is not dragged on the floors, which might cause major damage the flooring. In the case of a grand or baby grand it may be possible to dismantle the legs first so moving the piano across the flooring surface becomes easier. If possible, the piano should be moved on a dolly across your floors.

But once in place, over a period of time, the legs could lead to indentations in flooring – especially carpeting and vinyl which is softer and more vulnerable. Heavy–duty slip–stick felt pads are available for just this purpose of protecting floors from heavy furniture. These have an adhesive backing to prevent then from creeping on laminate, hardwood or stone flooring. The felt pad takes the concentrated load and protects the flooring on which it rests. Adhesive pads are also available, made out of compressed rubber, which offer the same protection.

It is important regardless of the flooring in your home to make sure you floors, subfloor, and support structures are suitable to handle the weight of a piano or grand piano. It would be best to have these items inspected by a professional before attempting to put a piano in your home. In some cases a piano can cause permanent damage to your floors and can even fall through your flooring if the subfloor and your home’s support structure is not suitable to handle the weight.