Lime Plaster Floor

To this are added retardants such as keratin natural or sodium citrate manufactured.

Lime plaster floor.

Thickness used in this house it s possible to sculpt outside corners to give a softer look to what will become rock hard walls. In recent years it has become more popular because it is more environmentally friendly than cement. Traditional non hydraulic hydrated lime only sets through carbonatation when the plaster is kept moist and access. It is very nearly liquefied rock that is troweled onto the walls.

If it s the original lime plaster it s nearly 130 years old so it may be wiser to take it back to brick start with a blank canvass if you do go back to brick don t forget to wear a respirator mask for the dust jack make sure there s plenty of ventilation also. If you add lime to it in the proportions you suggest you will probably only get a 4 5 or 5 where an actual lime masonry floor is a 7 5 to almost 10. A gypsum plaster floor as does a suspected pre0th century date see figure 2. Even in the 1 4 in.

So think of it this way if a stone floor is a 10 an oak plank floor a 7 to 8 then a cob floor is about a 3 to 4 in the way of hardness. Concrete s not a pretty project it s sloppy and it made a mess of both a floor and me. Lime ash is generally no longer available so repairs and reconstruction are usually done using a mixture of lime putty coal ash gypsum class a hemi hydrate fine casting plaster unburnt loamy clay and burnt crushed tile. Lime plaster is a type of plaster composed of sand water and lime usually non hydraulic hydrated lime also known as slaked lime high calcium lime or air lime.

Lime plaster has been used for building since before the use of cement. In 2 addition unlike with concrete or cement the surface of a gypsum plaster floor is scratched easily with a sharp knife and rings when gently tapped. Laying a new floor. First i slapped up two coats of concrete so there would be a inch seamless base for the lime plaster to build upon.

Lime plaster can be made in two ways but it does require a fair amount of time and hard work to make it properly. Be mindful however that gypsum plaster floors may well contain some later cement repairs. So to get a durable floor you may need to cure it for some period of time with controlled moisture levels and avoid letting it dry out completely. The plaster used in this process is simply a mix of type s mason s lime limestone sand and water.

Then came the wait. Mold will not grow in lime plaster or on nearby wood. The elevated ph of the lime in the plaster will also act as a fungicide. Ancient lime plaster often contained horse hair for reinforcement and pozzolan additives to reduce the working time.

This involves absorption of co2 from the air and it happens faster when the lime is damp not soaking wet. Lime plaster and mortar hardens by carbonation. Compared to cement plaster lime plaster is less brittle and cracks much less requiring no expansion joints as a result.