CI/Sfb
(22.89) Km1
(P2)
June 2010
Ref: IGEWM1703
Isover Installation Guide
Masonry Separating Walls (Isover RD Party Wall Roll)
Masonry Separating Walls
Isover has developed a glass mineral wool roll designed for use in Robust Detail wall constructions to
meet Part E Building Regulations (England and Wales). Significant cost savings can be obtained since
there is no need for pre-completion testing and additional savings can be made with E-WM-17
as it removes the need of wet plaster or parge coats.
Features
Benefits
• Approved for use in Robust Detail
E-WM-6, E-WM 10, E-WM-13 and
E-WM-17
• Exceeds Part E Building Regulations (England & Wales) requirements in a nominal
75mm and 100mm cavity
• Significant cost savings can be obtained since there is no requirement for
pre-completion testing
• With E-WM-17, additional cost savings can be obtained since there is no requirement
for a sand/cement render and the construction can be drylined with gypsum boards directly to the inner face of the blockwork
• Provides the opportunity to gain up to 4 credits towards The Code for Sustainable Homes with category Hea 2
• 455mm wide glass mineral wool rolls
• Compatible with conventional wall tie spacing ensuring ease of installation
• Since the product is in roll form, ease of installation and acoustic performance is improved due to no/minimal vertical butt joints
• Easy to handle, cut and install
• High quality glass mineral wool
• Minimal on-site waste
• Robust flexible material properties
S
OR EST
D FON T G!!
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NE ETI TIN
NO MPL COA
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• Resilient to damage in storage, during transportation and on site during installation
Technical Enquiries: 0115 945 1143 or email: isover.enquiries@saint-gobain.com - www.isover.co.uk
Construction Overview
Following an extensive site testing programme, Isover RD Party Wall Roll has been approved in the following Robust Details by the RD
Assessment and Approval Committee.
E-WM-17
Robust Detail E-WM-17 is based on 2 leaves of lightweight aggregate blocks with a nominal cavity width of 75mm (70mm Isover RD
Party Wall Roll) or a nominal cavity width of 100m (95mm Isover RD Party Wall Roll) leaf to leaf, with a gypsum-based board ‘dot-and-dab’
finish (a sand/cement render is not required). RD Party Wall Roll is an integral component of this construction.
Block density
1350 to 1600 kg/m3
Wall ties Approved Document E ‘Tie type A’ (Refer to Robust Detail)
Cavity width
75mm nominal cavity width (70mm Isover RD Party Wall Roll)
100mm nominal cavity width (95mm Isover RD Party Wall Roll)
Block thickness
100mm (min), each leaf
Wall finish
Gypsum-based board (nominal 9.8kg/m2)
mounted on dabs
Insulation
Isover RD Party Wall Roll
External (flanking) wall Masonry (both leaves) with 50mm (min) cavity – clear, fully filled or partially filled with
insulation. If the cavity is clear or partially filled, use an Isover Cavity Barrier to minimise
acoustic flanking and to provide effective edge-sealing.
Technical Enquiries: 0115 945 1143 or email: isover.enquiries@saint-gobain.com - www.isover.co.uk
Masonry Separating Walls
E-WM-6, E-WM-10 & E-WM-13
Robust Detail E-WM-17 is based on 2 leaves of lightweight aggregate blocks with a nominal cavity width of 75mm (70mm Isover RD Party
Wall Roll) or a nominal cavity width of 100m (95mm Isover RD Party Wall Roll) leaf to leaf, with a gypsum-based board ‘dot-and-dab’ finish
(a sand/cement render is not required). RD Party Wall Roll is an optional component of these constructions and is included to anticipate
future regulatory requirements
Block density
600 to 800 kg/m 3 aircrete blocks (E-WM-6 uses conventional mortar joints, whilst E-WM-10 and
E-WM-13 use thin joint system)
Wall ties E-WM-6 – Approved Document E ‘Tie Type A’
EWM-10 – Ancon Building Products Staifix HRT4 or Clan PWT4
E-WM-13 – No Wall ties required
Cavity width
75mm nominal cavity width (70mm Isover RD Party Wall Roll)
100mm nominal cavity width (95mm Isover RD Party Wall Roll)
Block thickness
100mm (min), each leaf
Wall finish
Gypsum-based board (nominal 8 kg/m2) mounted on dabs on cement sand render (nominal 8mm)
with scratch finish. Render mix must not be stronger than 1:1:6 and not stronger than background
(refer to Robust Details)
Insulation
Isover RD Party Wall Roll
External (flanking) wall Masonry (both leaves) with 50mm (min) cavity – clear, fully filled or partially filled with insulation.
If the cavity is clear or partially filled, use an Isover Cavity Barrier to minimise acoustic flanking and to
provide effective edge-sealing.
NOTE: Image reflects the construction of E-WM-6
Technical Enquiries: 0115 945 1143 or email: isover.enquiries@saint-gobain.com - www.isover.co.uk
Installation Procedure
1) A section of the leading leaf is built to
a height of 3 block courses, with the
first row of wall ties at approximately
900mm horizontal spacing, positioned
where the insulation is to begin. It is
recommended that the insulation
should start as close to the base of
the cavity as possible to minimise noise
transfer across the cavity.
A second row of wall ties at 900mm
horizontal centres is positioned in the
mortar joint between the second and
third block courses.
the top edge of the insulation in contact
with the wall tie, and with the back
of the insulation in full contact with the
block faces. The insulation should then
be carefully unrolled along the full wall
length.
4) It is essential that both ends of the
acoustic insulation roll are positioned
so they can be fully butt-jointed with
the full fill thermal insulation (or Isover
cavity barrier) that will be installed
in the external walls.
5) Where the full length of the acoustic
roll is installed and it is shorter than
the full length of the party separating
wall, a second piece of insulation should
continue the run, ensuring that the
joining ends form a close butted joint.
Where the insulation needs to be cut,
use a sharp, clean knife.
6) The trailing leaf is built up to the
same level as the top of the acoustic
insulation, that is, 2 courses.
2) This leaf should be constructed at this
3 block height along the full length from
the front to the rear of the separating
wall.
3) Isover RD Party Wall Roll insulation
is removed from its packaging ensuring
that it remains in roll form, but exposing
approximately 750mm of length. This
is then positioned between the base
of the first block course (at the bottom
of the wall) and next row above, with
Technical Enquiries: 0115 945 1143 or email: isover.enquiries@saint-gobain.com - www.isover.co.uk
Masonry Separating Walls
7) This process is repeated, building up
Use of a cavity board will help to
successive sections of wall incorporating protect insulation edges and make
wall ties, at 900mm horizontal and cleaning easier.
450mm vertical centres, as work 9) Isover acoustic insulation should always proceeds to the required height, with the next layer of acoustic insulation roll be installed in the party wall at a
minimum of 300mm above the ceiling
installed every 2-block height.
level into the roof space to maximise
8) After each section of wall leaf is built,
noise reduction from property to property.
excess mortar should be removed
For room-in-roof situations, Isover RD
from the cavity face and mortar
Party Wall Roll should be installed in the
droppings cleaned from the exposed
full height of the wall to ridge level.
top edge of the installed insulation
10) All exposed areas of insulation should
before installation of the next roll.
be protected with waterproof material
Helpful Notes:
• Fully fill all blockwork with mortar
• Ensure that all vertical and horizontal joints in the insulation are tightly butted and cuts are made with a clean knife
• Ensure that only solid blocks are used as
stipulated in the Robust Detail manual.
at the end of the days work, or if work
is suspended, or during rain (Ref: NHBC
Standards Manual Chapter 6.1 – S10-d).
11) Generally, wall ties should be at the
usual spacing of 450mm vertically and
not more than 900mm horizontally (or
in accordance with NHBC guidelines).
IMPORTANT:
It is essential that all mortar droppings
are removed from the top edge of
each run of insulation. Bridging of the
cavity can significantly reduce the
acoustic performance of the wall.
• Cover and protect the wall construction at the end of a days work and during spells of rain.
• Keep any chases for services to a
minimum and fill well with mortar. • For further information refer to the Stagger chases on each side of the wall
required Robust Details information
• Make sure that there is no connection and checklist.
between the two leaves, except for wall to avoid them being back to back.
ties, foundation, and Isover RD Party Wall • Store individual packs of Isover RD Party Roll insulation – Remove all mortar Wall Roll in a dry place. If outside, keep droppings from the top edge of each run off the ground.
of insulation
Technical Enquiries: 0115 945 1143 or email: isover.enquiries@saint-gobain.com - www.isover.co.uk
Packaging and Physical Dimensions
Isover RD Party Wall Roll is supplied in 455mm wide rolls for ease of installation and compatibility with conventional wall tie spacing.
The product is compression packed with two rolls per pack using strong polythene packaging. The packs are stacked on wooden pallets
with a final weatherproof outer covering, giving the option of outdoor storage.
Thickness
(mm)
Suitable for use
in nominal cavity
widths of (mm)
Width
(mm)
70
75
95
100
Length
(mm)
Pack Area
- 2 x 455mm rolls (m2)
Packs
per pallet
Pallet
Area (m2)
2 x 455 9000
8.19
28
229.32
2 x 455 6500
5.92
28
165.76
Environmental Information
Isover offers a range of high performance insulation products designed
to meet thermal, acoustic and fire safety requirements for the built
environment. The company is committed to continuously improving the
way in which its products and processes impact on the natural environment
and is the only glass mineral wool manufacturer to achieve the maximum
possible recycled content, 86 percent, using recycled glass that would
otherwise go to landfill. This is why we have introduced our 3 Point Plan for
environmental sustainability:
Quality Assurance
Isover is an ISO 14001:2004 ( Environmental Management System)
accredited manufacturing facility. This accreditation assures that all
products are manufactured to the stringent standards set out by this
management system.
✯ Less Materials
✯ Less Energy
✯ Less Emissions
Element Rating
Wall constructions as defined by Robust Details Limited have been
successfully assessed by BRE and awarded the following ratings;
E-WM-6 = C, E-WM-10 = B, E-WM-13 = B, E-WM-17 = C
BRE Green Guide Summary Rating
Isover RD Party Wall Roll achieves a Green Guide Summary rating
of A+ (www.bre.co.uk).
Visit www.3pointplan.co.uk for further information.
Technical Enquiries: 0115 945 1143 or email: isover.enquiries@saint-gobain.com - www.isover.co.uk
www.3pointplan.co.uk www.isover.co.uk
CI/SfB
(29)
Km1
(M2)
Publish date: June 2010
Isover Document Reference: IGEWM1703
FSC LOGO
Isover reserves the right to revise product specifications without notice. The information in this document was
correct to the best of our knowledge at the time of publication. It is the users responsibility to ensure that it
remains current prior to use. The information in this document is for guidance only and should not be read in
isolation. Users should read and familiarise themselves with all the information contained in this document and
ensure that they are fully conversant with the products and systems being used, before subsequent specification
or installation. For a comprehensive and up to date library of information visit the Isover website.
Isover Order Placement or Order Enquiries:
Tel: 0800 032 2555
Buildings Insulation - Technical Enquiries:
Tel: 0115 945 1143
Email: isover.enquiries@saint-gobain.com
Saint-Gobain Isover
UK Commercial Centre
Gotham Business Park
Leake Road
Gotham
Nottinghamshire
NG11 0LB
Tel: + 44 (0) 115 969 8010
Fax: + 44 (0) 115 983 1675
Email: isover@saint-gobain.com