Otterbein lime plasters not only offer sustainable benefits, but breathability and flexibility for the building. They can reduce site work times by a massive 75% to traditional application. It also contributes to a healthy internal environment and an economical, practical alternative to plasters containing gypsum or patent cements that have little or no vapour permeable qualities. It can be sprayed by machine or done by hand application as a two coat system. Suitable substrates include brickwork, blockwork or concrete.
Due to their open pore structure Otterbein lime plasters are vapour permeable. They are able to absorb excess humidity and release it when the humidity level falls, creating a more pleasant consistent room climate.
Helpful to allergy sufferers
Otterbein lime based products do not contain cement or any preservatives, solvents or plasticizers, with the ability to regulate humidity means they are especially favourable to allergy sufferers. Otterbein have been awarded “suitable for allergy suffers” from the German Institute for Environment and Health.
Having a high pH level, the lime act as a mould repellent. This is a benefit in areas where sealed windows prevent movement of air.
Otterbein plasters allow for slight movement in the substrate, reducing the possibility of cracks appearing.
The lime manufacturing process produces less carbon dioxide than ordinary building materials. Additionally, it will reabsorb carbon dioxide in the air during the curing process, lowering its carbon footprint throughout the buildings life.
Being pre-mixed from the factory removes the possibility of errors in ratio or choice of aggregate during site mixing.
Otterbein Product Range
Lime Priming Plaster
The Otterbein priming plaster is a base coat which can be used over a variety of substrates from block work, masonry or stone backgrounds. The base coat can be used internally and externally and is 100% free from cement, perfect for conservation and restoration of old listed buildings and new builds.
Fine Lime Plaster
Calcea fine lime plaster is a finishing plaster can be used in restoration work and new builds. Calcea lime paint can be applied to the finish coat to complement the breathability. Together with the base coat this system has been awarded the product seal “suitable for allergy sufferers” from the German IUG.
Why Use Histocal Lime Plaster?
The Histocal range of lime plasters are 100% free from cement and perfect for historic buildings and monuments. They harden slowly and are flexible so they will absorb movement. They have natural capillarity and a high water vapor diffusion capacity to enable substrates to lose moisture quickly through the Histocal plaster. The high alkalinity prevents the build up of mold, which is particularly important in historic buildings restoration. Histocal is trusted around the world which have been used in many UNESCO World Heritage sites.