Product Installation - Kingspan K5
Kooltherm K5 - Installing insulated render systems
As insulated render systems are proprietary and utilise
different mechanisms for attaching insulation to the wall
structure, site work guidance should be sought from the
However, in the absence of any other guidance K5 insulation boards are mechanically fixed
to the exterior of masonry external walls using anchor bolts,
expansion fixings, proprietary fixings or bedded in render.
In the case of timber frame walls the K5
insulation boards are temporarily pinned in place with all
joints lightly butted.
A breathable membrane (such as Dupont Tyvek Supro) is applied over the insulation boards and temporarily
stapled or pinned in place.
Preservative treated softwood
battens are fixed vertically at centres to coincide with the
timber frame wall studs. The expanded metal / cementitious
board to carry the render is then fixed to the vertical battens.
Sill extenders and flashings are used around openings,
although the use of rigid phenolic insulation minimises the
overall thickness of the external render system.
Cutting should be carried out either by using a fine toothed
saw, or by scoring with a sharp knife, snapping the board over
a straight edge and then cutting the facing on the other side.
Ensure accurate trimming to achieve close-butting joints and
continuity of insulation.
Fixings for Attachment of Vertical Counter Battens
Approved fixings should be applied at centres appropriate to
the design of the wall and location of the building, in order to fix
vertical battens through to the wall studs of a timber frame or