HP 9L Natural Lime Base Plaster, light
Application Range HP 9L

HP 9L Natural Lime Base Plaster is used as base coat for indoors and outdoors.
HP 9L can be applied to all types of masonry, as well as to rough-sawn concrete, pumice concrete and poured concrete.
In the case of highly absorbent substrates and very warm weather, sufficient pre-wetting is required (do not use absorbent substrate primer!).
It may be necessary to wet the plaster with water after application. Concrete ceilings must be provided with HP14 Kalkhaftputz (Natural Lime Adhesive Plaster) applied with a toothed trowel.
After sufficient curing, HP 9L is applied by spraying at a thickness of approx. 10 mm.
Composition HP 9L
HP 9L is a mineral dry mortar premix of mortar group P Ic. HP 9L consists of natural hydraulic lime, quartz sand, mineral light-weight aggregates and a small amount of cellulose. HP 9L does not contain any synthetic binders, is highly vapour permeable and resistant to fungal and mould growth. Thermal conductivity λ is 0.2 W/(mK).