It has occurred to me that it is probably to do with the spans between piers/joists being too large to support flooring. By putting a separate floor frame on top of the bearers you provide a framework with smaller joist spans more suiting to support the sub-floor.
I'm building a garden room and I plan to use a pier foundation. My plan is to put the floor frame straight onto the piers, with a DPM between the floor timber and the piers.
However, from browsing the web I've seen quite a few floor structures that use bearers/skids on top of the piers, and...
Hi,
We've had a couple of rats get into the floor cavities in our house, and I'm trying to work out how to block of the hole that is giving them access, which unfortunately isn't that easy.
We have an internal soil pipe that is boxed off and comes down behind some kitchen units. If I pull...