Placing hempcrete - The Hempcrete Topic: Designing and Building with Hemp-lime - page 350

Occasionally a more closed finish is desirable, for example where you know in advance
that the hempcrete is to be left bare internally as a feature wall. In this case a more closed-
up surface is required to consolidate the surface of the wall, as this will not be achieved
with plaster. In such cases the longer drying time resulting from the closed surface is not a
problem, as there is no pressure for the wall to dry quickly so that finishes can be applied.
When consolidating the surface of a hempcrete wall, look
for a good balance between an open and closed struc-
ture. This close-up shows a good consistent surface: not
too open and not too closed.
To some extent, however carefully we describe it here, finding the correct placing tech-
nique necessary to achieve the correct density throughout the wall and the desired surface
texture is a process of trial and error, and first-hand practical experience is essential.
When building with hempcrete for the first time, or with materials you have not used be-
fore, it is normal practice to construct a test panel to try out your placing technique and to
review its success (see page 213 ). In this way any problems can be identified, and adjust-
ments to technique made, before starting on the build proper.