Knauf Gypsum Parge Coat wins 'seal' of approval
Gypsum Parge Coat from Knauf Drywall has won a seal
of approval for use on separating walls of medium
density aggregate blockwork. It has achieved Robust
Detail approval for use on separating walls of type
E-WM-4 one of the most commonly used. This gives
housebuilders and drylining contractors a clear formula
for Part E compliance without the cost of pre-completion
testing. Easy-to-use Knauf Gypsum Parge Coat ensures
acoustic performance and its fast drying time
encourages on-site productivity.
Knauf Gypsum Parge Coat is specially designed to seal
masonry walls prior to finishing with Knauf
plasterboards. Gypsum Parge Coat is hand or machine
mixed with water at the point of use for manual or
spray application. It is applied in a continuous layer
over the entire wall surface, to ensure that all gaps
are filled, especially at junctions and corners. Being
gypsum-based it is much easier to apply than traditional
sand-cement renders. Each 25kg bag covers 4.25m2, at a
minimum thickness of 6mm. It has excellent adhesion and
dries within two hours, so that Knauf Wallboards can be
direct-bonded on the same day for enhanced productivity.
Knauf Gypsum Parge Coat is available through builders
merchants.
After the introduction of the new Approved Document E of
the Building Regulations, attention focused on acoustic
performance especially of separating walls between
dwellings and other residential buildings, such as
hotels. In new-build homes, for example, separating
walls must provide at least 45dB reduction of airborne
sound on site. Robust Standard Details set out
conditions for constructions to comply with Part E
requirements, without compulsory pre-completion testing.
The Robust Detail approval allows use of Knauf Gypsum
Parge Coat in place of sand-cement render on E-WM-4
medium density blockwork separating walls, finished with
Knauf plasterboards. Typically this consists of two
100mm masonry leaves with a 75mm cavity. The outer face
of each leaf is parge-coated and finished with 12.5mm
Knauf Wallboard on dabs of Knauf Bonding Compound.
Gypsum Parge Coat is also an ideal substitute for
sand-cement renders on separating walls of aircrete and
dense aggregate blocks: Robust Detail approval for these
applications is expected in due course. Further details
on Knauf Drywall solutions for Part E requirements in
residential building can be found in the Design Partner
series Housing brochure.
Knauf Drywall manufactures a full range of plasters,
plasterboards, insulating laminates, drywall
accessories, metal sections and steel building systems,
for domestic and commercial applications, from factories
at Sittingbourne in Kent and Immingham on Humberside.
Email:
bstark@knauf.co.uk
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