Hi I was wondering what advice any of you might have. I just purchased a flat recently (leasehold and share of freehold), and I want to put wood flooring yet the lease says that I am required to "fully cover and keep covered the floors of the premises with carpet and underlay". I understand this is to prevent sound affecting the neighbours below. The current carpets and underlay do transmit quite a lot of sound anyway (I can also hear the footsteps and radio from upstairs), so I am thinking, to ensure that I do not disturb the neighbours while still abiding by the lease to install the following: 1. Carpet tiles directly onto the floorboards (cheap, thin, hard as they have rubber backing, and provide some sound insulation) and I abide by the lease requirement of having "carpet" 2. Tredaire Technics 5 underlay (very expensive, excellent sound insulation) and I abide by the lease requirement of having underlay 3. Engineered click-system wood floor as a floating floor Now I think the carpet tiles are not really 'spring' enough to create the 'bounce' effect, and the underlay is one of the best for sound absorption and surely will all these layers, the sound reduction is better than the cheap underlay/carpet that is currently in place? Its expensive, but I don't want to annoy my neighbours, and I don't want to breach the lease. What do you guys think in terms of installation, how it will feel, and sound-insulation-wise?