This project is a private dwelling that is a Grade II listed former water mill in West Oxfordshire. (Photo shown for illustration purposes only)
The original first floor was sagging. It felt like it was due to the settlement of an essential post that was supporting the floor, a single timber post that sat in the middle of the ground floor living area supporting the floor above. The first floor was consequently at a severe slope across the corridors on the first floor sinking from one side to another by about 50mm.
To stabilise the first floor, we removed the floorboards, jacked up the joists, propped the beam, and removed the sinking post. Rather than damage the original flagstone floor and create a new foundation to support the post we decided to remove it in its entirety and place a steel beam across the full width of the building instead. The steel beam replaced the support of the post and is held by the masonry walls that have not moved in 150 years. The owners then clad the steel in oak so that it matched the rest of the house. This solution not only removed the problem of the sagging first floor but also gave the owner a post-free space and avoided damage to the original floor. The conservation officer was happy that the post could be removed permanently.