Tf04
TIMBER FRAME WALLS
BETWEEN STUDS AND TO EXTERIOR OF SARKING
P10 SUNDRY INSULATION/ PROOFING WORK/ FIRE STOPS
To be read with Preliminaries/General conditions. The details contained within this proposal are
based on information available at the time of writing and covers the installation of Knauf Insulation
products. Knauf Insulation cannot be held responsible for unknown site conditions or for the
performance of materials within the system other than those manufactured, supplied or branded by
Knauf Insulation. The requirements of all relevant British Standards and Industry Codes of Practice
should be complied with at all times. All clauses that are not applicable should be deleted.
TYPES OF INSULATION
210 INSULATION FITTED BETWEEN STUDS
Material: Unfaced glass wool to BS EN 13162
Manufacturer: Knauf Insulation Ltd, PO Box 10, Stafford Road, St Helens, Merseyside, WA10
3NS, Tel: 01744 766600, Web: www.knaufinsulation.co.uk
E-mail: tech@knaufinsulation.com.
Product reference: Earthwool FrameTherm Roll 40
Thickness: 90mm/140mm
Product reference: Earthwool FrameTherm Slab 38
Thickness: 90mm/140mm
Product reference: Earthwool FrameTherm Roll/Slab 35
Thickness: 90mm/140mm
Product reference: Earthwool FrameTherm Roll/Slab 32
Thickness: 90mm/140mm
Installation requirements:
Joints: Butted, no gaps.
Fasteners: Used to prevent slumping/ displacement
310 VAPOUR CONTROL LAYER FIXED TO TIMBER STUDS/ JOISTS/ FRAMING
Material: _______
Manufacturer: ________
Product reference: ________
Minimum vapour resistance: _______.
Moisture content of timber at time of fixing (maximum): 20%
Installation requirements:
Setting out: Joints minimized
Method of fixing: Staples at 250 mm centres maximum along all supports. Membrane not
sagging
Joints: At supports only, lapped 150 mm minimum
Openings: Membrane fixed to reveals
Joints and edges: Sealed with double sided tape with vapour resistivity not less than the
vapour control layer
KNAUF INSULATION LTD.
PO BOX 10, STAFFORD ROAD, ST HELENS, MERSEYSIDE, WA10 3NS, UK.
TEL: 01744 24022 FAX: 01744 612007 www.knaufinsulation.co.uk
TECHNICAL ADVISORY CENTRE TEL 01744 766666 FAX 01744 766667 E MAIL tech@knaufinsulation.com
REGISTERED OFFICE: STAFFORD ROAD, ST HELENS, MERSEYSIDE WA10 3NS, UK, REGISTERED IN ENGLAND, COMPANY NUMBER 1926842
P10/NBS Version/March 2008
Penetrations: Sealed
320 BREATHER MEMBRANE
Material:
Manufacturer:
Product reference:
Installation requirements:
Setting out:
Method of fixing:
Joints:
Bottom edges:
Penetrations:
410 FLEXIBLE CAVITY BARRIERS
Manufacturer:
Product reference:
Material:
Fire resistance rating:
Installation requirements:
Spacing: Installed in void so the maximum unobstructed dimension in any direction is
_______
Fixing: Secure at perimeters and joints with no gaps, to provide a complete barrier to smoke
and flame
420 SLEEVED MINERAL WOOL SMALL CAVITY BARRIERS
Manufacturer: Knauf Insulation Ltd, PO Box 10, Stafford Road, St Helens, Merseyside, WA10
3NS, Tel: 01744 766600, Web: www.knaufinsulation.co.uk
E-mail: tech@knaufinsulation.com
Product reference: Earthwool Cavity Barrier
Material: Glass mineral wool sleeved in polyethylene with flanges
Fire resistance rating: To BS 476-8, 60 stability/ integrity/ insulation
Cavity size: 50mm - 65mm
Colour: Yellow
Cavity size: 66mm - 80mm
Colour: Blue
Cavity size: 81mm - 100mm
Colour: White
Installation requirements:
Fasteners: Staples at maximum 150 mm centres
Vertical barriers: Fixed by both flanges
Horizontal barriers: Fixed by upper flange only
Joints and intersections: Butted, with barriers compressed along full length to give complete
seal
KNAUF INSULATION LTD.
PO BOX 10, STAFFORD ROAD, ST HELENS, MERSEYSIDE, WA10 3NS, UK.
TEL: 01744 24022 FAX: 01744 612007 www.knaufinsulation.co.uk
TECHNICAL ADVISORY CENTRE TEL 01744 766666 FAX 01744 766667 E MAIL tech@knaufinsulation.com
REGISTERED OFFICE: STAFFORD ROAD, ST HELENS, MERSEYSIDE WA10 3NS, UK, REGISTERED IN ENGLAND, COMPANY NUMBER 1926842
P10/NBS Version/March 2008
430 WIRED MINERAL WOOL SMALL CAVITY BARRIERS
Material: Wire reinforced mineral wool minimum 50 mm thick
Fire resistance rating: ________
Installation requirements:
Fasteners: Staples at maximum 150 mm centres. Fold cavity barrier if necessary to ensure
a tight fit
Joints and intersections: Butted, no gaps
F30 ACCESSORIES/ SUNDRY ITEMS FOR BRICK/ BLOCK/ STONE WALLING
To be read with Preliminaries/General conditions. The details contained within this proposal are
based on information available at the time of writing and covers the installation of Knauf Insulation
products. Knauf Insulation cannot be held responsible for unknown site conditions or for the
performance of materials within the system other than those manufactured, supplied or branded by
Knauf Insulation. The requirements of all relevant British Standards and Industry Codes of Practice
should be complied with at all times. All clauses that are not applicable should be deleted.
CAVITIES
120 CLEANLINESS
Cavity base and faces, ties, insulation and exposed dpcs: Free from mortar and debris.
130 PERPEND JOINT WEEP HOLES
Form: Open perpend joint
Locations: Through outer leaf immediately above base of cavity, at cavity trays, stepped
dpcs and external openings. 75 mm above top of cavity fill at base of cavity
Provision: At not greater than 1000 mm centres and not less than two over each opening
150 FULL FILL CAVITY INSULATION
Insulation: Glass mineral wool
Standard: BS EN 13162
Product certification: British Board of Agrement (BBA) Certificate number 95/3212
Manufacturer: Knauf Insulation Ltd, PO Box 10, Stafford Road, St Helens, Merseyside, WA10
3NS, Tel: 01744 766600, Web: www.knaufinsulation.co.uk E-mail:
tech@knaufinsulation.com.
Product reference: Earthwool DriTherm Cavity Slab 32
Face size (nominal length x width): 1200mm x 455mm
Thickness (nominal): 50mm/65mm/75mm/85mm/100mm
Thermal conductivity: 0.032W/mK
Reaction to fire class: Euroclass A1
Additional requirements: None
Placement: Continuous and free of mortar and debris
KNAUF INSULATION LTD.
PO BOX 10, STAFFORD ROAD, ST HELENS, MERSEYSIDE, WA10 3NS, UK.
TEL: 01744 24022 FAX: 01744 612007 www.knaufinsulation.co.uk
TECHNICAL ADVISORY CENTRE TEL 01744 766666 FAX 01744 766667 E MAIL tech@knaufinsulation.com
REGISTERED OFFICE: STAFFORD ROAD, ST HELENS, MERSEYSIDE WA10 3NS, UK, REGISTERED IN ENGLAND, COMPANY NUMBER 1926842
P10/NBS Version/March 2008
155 PARTIAL FILL CAVITY INSULATION
Insulation: Glass mineral wool
Standard: BS EN 13162
Product certification: British Board of Agrement (BBA) Certificate number 95/3212.
Manufacturer: Knauf Insulation Ltd, PO Box 10, Stafford Road, St Helens, Merseyside, WA10
3NS, Tel: 01744 766600, Web: www.knaufinsulation.co.uk
E-mail: tech@knaufinsulation.com
Product reference: Earthwool DriTherm Cavity Slab 32
Face size (nominal length x width): 1200mm x 455mm
Thickness (nominal): 50mm/65mm/75mm/85mm/100mm
Thermal conductivity: 0.032W/mK
Reaction to fire class: Euroclass A1
Additional requirements: None.
Placement: Secure against face of inner leaf
Residual cavity: Clear and unobstructed
Joints between boards, at closures and penetrations: No gaps and free from mortar and
debris
REINFORCING/ FIXING ACCESSORIES
210 CAVITY WALL TIES
Standard: ________
Type: _______
Material/ finish: _______
Sizes: ________
FLEXIBLE DAMP PROOF COURSES/ CAVITY TRAYS
390 SITE FORMED DPC/ CAVITY TRAY JUNCTIONS/ STOP ENDS
Three dimensional changes in shape: Form to provide a free draining and watertight
installation. Seal laps
Alternative use of preformed junction cloaks/ stop ends: Submit proposals
INSTALLATION OF DPCS/ CAVITY TRAYS
415 HORIZONTAL DPCS
Placement: In continuous lengths on full even bed of fresh mortar, with 100 mm laps at joints
and full laps at angles
Width: At least full width of leaf unless otherwise specified. Edges of dpc not covered with
mortar or projecting into cavity
Overlying construction: Immediately cover with full even bed of mortar to receive next
masonry course
Overall finished joint thickness: As close to normal as practicable
KNAUF INSULATION LTD.
PO BOX 10, STAFFORD ROAD, ST HELENS, MERSEYSIDE, WA10 3NS, UK.
TEL: 01744 24022 FAX: 01744 612007 www.knaufinsulation.co.uk
TECHNICAL ADVISORY CENTRE TEL 01744 766666 FAX 01744 766667 E MAIL tech@knaufinsulation.com
REGISTERED OFFICE: STAFFORD ROAD, ST HELENS, MERSEYSIDE WA10 3NS, UK, REGISTERED IN ENGLAND, COMPANY NUMBER 1926842
P10/NBS Version/March 2008
425 GROUND LEVEL DPCS
Joint with damp proof membrane: Continuous and effectively sealed
435 STEPPED DPCS IN EXTERNAL WALLS
External walls on sloping ground: Install dpcs not less than 150 mm above adjoining finished
ground level
445 SILL DPCS
Form and placement: In one piece and turned up at back when sill is in contact with inner leaf
455 COPING/ CAPPING DPCS
Placement: Bed in one operation to ensure maximum bond between masonry units, mortar
and dpc.
Dpcs crossing cavity: Provide rigid support to prevent sagging
475 SITE FORMED CAVITY TRAYS
Requirements to prevent downward ingress of water:
Profiles: To match those shown on drawings. Firmly secured
Joint treatment: Use unjointed wherever possible, otherwise lap at least 100 mm and seal
to produce a free draining and watertight installation
Horizontal cavity trays: Support using cavity closer
Sloping cavity trays: Prevent sagging
Cleanliness: Free from debris and mortar droppings
485 CAVITY TRAYS OVER OPENINGS AND OTHER CAVITY BRIDGINGS
Length: To extend not less than 150 mm beyond ends of lintels/ bridgings
495 GAS RESISTANT DPCS/ CAVITY TRAYS
Joint treatment: Use unjointed wherever possible, otherwise lap at least 150 mm and seal to
form a gas and watertight installation
Joint with damp proof membrane: Overlap dpc/ cavity tray not less than 150 mm
560 VERTICAL DPCS GENERALLY
Form: In one piece wherever possible
Joints: Upper part overlapping lower not less than 100 mm
570 JAMB DPCS AT OPENINGS
Joint with cavity tray/ lintel at head: Full underlap
Joint with sill/ horizontal dpc at base: Full overlap
Projection into cavity: Not less than 25 mm
Relationship with frame: In full contact
580 JAMB DPCS TO BUILT IN TIMBER FRAMES
Fixing: Securely fastened to back of frame
Fasteners: Galvanized clout nails or staples
KNAUF INSULATION LTD.
PO BOX 10, STAFFORD ROAD, ST HELENS, MERSEYSIDE, WA10 3NS, UK.
TEL: 01744 24022 FAX: 01744 612007 www.knaufinsulation.co.uk
TECHNICAL ADVISORY CENTRE TEL 01744 766666 FAX 01744 766667 E MAIL tech@knaufinsulation.com
REGISTERED OFFICE: STAFFORD ROAD, ST HELENS, MERSEYSIDE WA10 3NS, UK, REGISTERED IN ENGLAND, COMPANY NUMBER 1926842
P10/NBS Version/March 2008
JOINTS
650 POINTING IN FLASHINGS
Joint preparation: Free of debris and lightly wetted
Pointing mortar: As for adjacent walling
Placement: Fill joint and finish flush
660 PINNING UP TO SOFFITS
Top joint of loadbearing walls: Fill and consolidate with mortar
MISCELLANEOUS ITEMS
840 OPENINGS FOR FRAMES
Formation: Use accurate, rigid templates to required size
850 WALL PLATES
Placement: On full bed of mortar to correct horizontal level
KNAUF INSULATION LTD.
PO BOX 10, STAFFORD ROAD, ST HELENS, MERSEYSIDE, WA10 3NS, UK.
TEL: 01744 24022 FAX: 01744 612007 www.knaufinsulation.co.uk
TECHNICAL ADVISORY CENTRE TEL 01744 766666 FAX 01744 766667 E MAIL tech@knaufinsulation.com
REGISTERED OFFICE: STAFFORD ROAD, ST HELENS, MERSEYSIDE WA10 3NS, UK, REGISTERED IN ENGLAND, COMPANY NUMBER 1926842
P10/NBS Version/March 2008