A major issue we encounter when restoring older buildings is where lovely wooden floors have been removed, and replaced with a concrete floor which has been poured onto a non-breathable plastic or rubber membrane. This causes damp to be trapped under the cement and membrane. The damp will find its way into the brick walls and foundations and overload them with extra moisture that would never be present had the floor been allowed to breathe. Most older buildings will originally have had timber, brick or stone floors, and this type of floor has worked very well for hundreds of years, as the methods used were well thought out to fight against damp.
The photograph below is of a completed insulated, breathable floor with underfloor heating installed, York stone laid on top.
RJM Heritage offer a natural breathable solution for your floors. The importance of the floor in keeping an old house dry is often underestimated, and frequently ignored completely owing to a general lack of knowledge. Our solution is to provide a fully breathable floor, built up of geo-textile membranes, foamed glass insulation and lime screed. The screed can be topped with any form of covering, such as stone slabs or brick. The underfloor heating (where installed) keeps the house lovely and warm in the winter, and cool in the summer owing to the make-up of the floor.
Below shows a breathable floor with underfloor heating in the making. Note that York slabs are being laid directly onto newly laid screed as the floor progresses, rather than being laid on top of a dry screed. The result is that the floor is a single entity, as opposed to slabs being stuck on top with a thin layer of screed - no 'rockers' here!
The photograph below is the beginning of drying out a very wet cellar in a Georgian house. The cement tank has been hacked off, and already the walls begin to breathe thanks to the lime mortar they were constructed with. Original brick floor is carefully removed, ready to be re-installed on top of the lime screed.
The cellar featured below shows a lime screed floor being installed on top of a geo-textile membrane, with a perimeter bund created to add strength to the footing bricks. The aperture on the right of the shot was completed with a mullion window built on site to permit daylight to enter.
RJM Heritage Limited
4 High Street
Company No. 08707541