Bradford Acoustistar - B&B Insulationsbbinsulations.com.au/techinfo/PDFs/Brochures/Acoustistar_LR.pdf · solutions to meet bca sound insulation provisions bradford glasswool insulation

S O L U T I O N S T O M E E T B C A S O U N D I N S U L AT I O N P R O V I S I O N S

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Bradford Acoustistar™

H I G H P E R F O R M A N C E A C O U S T I C I N S U L AT I O N S Y S T E M S

T H E B L U E B O O K

A quieter work environment means higher productivity with less stress.

A quieter hotel room means a happier holiday or business trip.

A quieter home means better sleep patterns and improved family life.

Contents

New BCA Sound Insulation Provisions 1

Glasswool or Polyester? 2

Requirements for walls and floors for Class 2 or 3 Buildings to comply with BCA 3

Requirements for walls and floors for Class 9c (Aged Care Building) to comply with BCA 3

BCA ‘Deemed to satisfy provision’ – Bradford basic acoustic solutions 4

Masonry Walls 4

Concrete Walls 4

Autoclaved Aerated Concrete (CSR Hebel) Walls 5

Timber and Steel Frame Walls 6

Concrete Floors 6

Autoclaved Aerated Concrete (CSR Hebel) Floors 7

Timber Floors 7

Services 8

Schedule of CSR Bradford Acoustilag 45 and ceiling systems to comply with BCA requirements – Rw30 8

Schedule of CSR Bradford Acoustilag 45 and ceiling systems to comply with BCA requirements – Rw45 8

Internal office insulation 9

Internal office walls 9

Bradford Acoustistar™ systems 10

Suspended ceilings 11

Services 11

Noise problems in homes 11

Home theatre 12

Glasswool density 13

The environment 13

Bradford ComfortSleeve™ 13

CSR Bradford Insulation

has more than 70 years’

experience in providing

acoustic insulation

products and reliable

system solutions.

The Australian Building Codes Board introduced changes to the Sound Insulation Provisions of the Building Code of Australia in May 2004 to reflect these expectations of improved building acoustic performance.

Insulation plays a significant role in noise control.

CSR Bradford Insulation has more than 70 years’ experience in providing acoustic insulation products and reliable system solutions.

This brochure explains how you can achieve the optimum solution of cheaper, lighter and faster construction of internal partitions and party walls to meet and exceed the new Building Code of Australia (BCA) requirements, using Bradford Glasswool Partition Batts, Bradford Rockwool SoundScreen™ insulation, and the Bradford Acoustistar™ range.

For further information on a wider range of building systems, refer to the CSR Gyprock Red Book.

New BCA sound insulation provisions

On 1 May 2004, the Building Code of Australia (BCA) introduced several changes to accommodate sound insulation provision. These changes include:

• increased protection from airborne sound for walls and floors separating sole occupancy units (SOUs)

• impact sound insulation for floors separating dwellings

• sound protection for water supply pipes, ductwork and storm water pipes.

The new requirements apply to all areas of Australia except for Queensland, Western Australia and the Northern Territory, which will continue to operate under the existing regulation.

The BCA sound provisions will apply to all:

• - Class 1 buildings (townhouse and terrace homes)

• Class 2 buildings (apartments and flats)

• Class 3 buildings (hotels, motels and larger boarding houses)

• Class 9c buildings (aged care units).

Sound provision introduces the Ctr value to complement the Rw of the wall. (Rw is a single figure rating in decibels for airborne sound insulation of a building’s elements, e.g. walls, calculated from the range of different frequencies tested in a laboratory. A higher number means better noise insulation capability.)

This new measure is designed to increase protection from the low frequency performance of a wall or floor system, and has been introduced in response to bass frequencies accompanied with sub-woofers in home theatres.

Ctr is a negative number with a typical range from –1 to –15, which takes into account the characteristics of a particular sound spectra. A high negative Ctr indicates higher levels of low frequency noise penetrating a wall.

As a result of the new sound insulation provisions, instead of stating a wall rating as Rw, the provision will now rate a wall as Rw + Ctr. For example, using a Ctr of (-6), previously a wall may have been rated as Rw 50. This will now be rated 50 + (-6) which equals 44. The higher the value the better performance.

The term used to describe impact sound isolation of a floor is the ‘weighted normalised impact sound pressure level’ (Ln,w) plus the spectrum adaption term (C1). The lower the Ln,w + C1 of the floor, the better the impact sound performance.

This new acoustic standard now requires a review of insulation performance and product choice.

1

Building designers around the world are increasingly recognising the importance of improved acoustic performance to meet community expectations.

2

Acoustic performance

CSR has undertaken extensive acoustic testing of products and systems over many years.

Recent independent research undertaken by PKA Acoustic Consultants has demonstrated the superior performance of Bradford Glasswool Partition Batts compared to certain commonly specified polyester insulation under the new Rw + Ctr criteria in the BCA.

Specified Equivalent Polyester Rw + Ctr Bradford Glasswool Rw + Ctr Insulation Partition Batts

50mm 44 50mm 46

60mm 44 50mm 46

70mm 45 50mm 46

80mm 45

50mm 46

75mm 47

Note: Tests conducted at Rintoul Acoustic Laboratories by PKA Acoustic Consultants, August 2004. Wall system: 13mm CSR Gyprock Fyrchek™ both sides, 64mm separated steel studs at 600mm centres. Polyester products tested Autex – ASB2, ASB3, ASB4, ASB5 and Insulation Solutions Pink Poly – PP2, PP4. Polyester products were allowed to recover to nominal thickness for testing. Repeat tests were conducted and also compared to previous test results by CSR Bradford Insulation, CSR Gyprock, CSR Hebel and CSR bricks to ensure reliability.

These results are consistent with theoretical expectations given the fundamental differences between Glasswool and polyester in terms of bonding, recovery rate, fibre diameter – key elements to good acoustic, as well as thermal, insulation product performance.

To further compare Glasswool and polyester products, the chart below shows published results of individual product acoustic absorption testing to AS1045:1988 ‘Acoustics – Measurement of Sound Absorption in a Reverberation Room’ across a range of densities. (NB 60mm polyester was used for lower densities as no 50mm results were available.)

“Based on the test program of separated double stud partitions the Glasswool provided markedly superior acoustic performance when compared to equivalent and costlier polyester insulation configurations.

The main factor was the cost effectiveness of the wall systems. The use of appropriate Glasswool insulation as a cavity infill had the potential to significantly reduce the cost of the partition wall when high acoustic performance was required such as the case with BCA 2004 or the AAAC Star Rating System.”

Peter Knowland, PKA Acoustic Consultants

Fire performance

Under the Building Code of Australia there is a general requirement for insulation materials to have a Spread of Flame Index of 0 and a Smoke-Developed Index of not more than 5 or 3 in certain structures of a Class 9a or 9b building. Glasswool, rockwool and polyester will achieve these ratings. Glasswool and rockwool have the best achievable results of: Ignitability = 0, Heating evolved = 0, Spread of Flame = 0, Smoke-Developed = 0, when tested AS1530:Part 3.

All Rockwool and some Glasswool insulation pass the more stringent 1530:Part 1 and in this case, can be classified as non-combustible. Polyester and other petrochemical based insulation products will generally fail this test.

CSR Bradford Insulation believe more comprehensive testing needs to be carried out on petrochemical based materials. A new test standard needs to be developed to take account of the possibility of these products transporting fire by flame droplets once ignited in a real fire situation.

Glasswool can be specified with confidence

Although Glasswool and Rockwool insulation remain the world’s most widely used acoustic products, in Australia and New Zealand polyester has been widely used over the past 10 years following concerns on building sites about the use of Glasswool and Rockwool.

These concerns were based on a classification in 1988 by the International Agency for Research on Cancer (IARC) that Glasswool and Rockwool may possibly be carcinogenic and should be further investigated.

The introduction in 2001 of new formulation FBS-1 Biosoluble Glasswool and Rockwool in Australia alleviated many of these concerns and resulted in agreement being reached with key building unions for their safe use on Australian building sites.

A follow-up review of 30 years’ exhaustive scientific and medical research findings resulted in the IARC revising Glasswool and Rockwool insulation as being not ‘classifiable as to carcinogenicity’ in 2002.

Glasswool and Rockwool insulation are not hazardous and can be specified and installed with absolute confidence.

B I O - S O L U B L E I N S U L AT I

O N

FB

S -1GLASS WOOL

Glasswool or polyester?

3

Situation

Walls between habitable* rooms in adjoining units

Walls between kitchens, toilets, bathrooms, laundries in adjoining units

Walls between a bathroom, sanitary compartment, laundry or kitchen in one SOU from a habitable room (other than a kitchen) in an adjoining unit

Walls separating a unit from a public corridor etc.

Walls separating a unit from a plant room or lift shaft

Floors between adjoining units

Walls/floors separating a duct, soil, waste or water supply pipe from a habitable* room

Walls/floors separating a duct, soil, waste or water supply pipe from a kitchen or non-habitable** room

Impact Sound

N/A

N/A

Walls to be discontinuous

N/A


Max Ln,w + C- = 62

N/A

N/A

Walls requiring an impact sound insulation rating must have a minimum 20mm cavity between two separate leaves (for a Class 2 or 3 building). For masonry, resilient ties must be used.

Provision has been made for field testing whereby a reduced Rw of 5 can be used. For example, a lab test stated: Rw + Ctr = 50 and the same field test stated: DnT,w + Ctr = 45.

* A habitable room is one used for normal domestic activities and can include the bedroom, living room, lounge room, music room, television room, kitchen, dining room, sewing room, study, playroom, family room or sun room.

** A non-habitable room is a space of a specialised nature occupied neither frequently nor for extended periods, such as the bathroom, laundry, water closet, pantry, walk-in wardrobe, corridor, hallway, lobby, photographic darkroom or clothes drying room.

Requirements for walls and floors for Class 2 or 3 Buildings to comply with BCA

Requirements for walls and floors for Class 9c (Aged Care Building) to comply with BCA

Airborne Sound (Minimum)

Rw + Ctr = 50

Rw + Ctr= 50

Rw + Ctr= 50

Rw= 50

Rw= 50

Rw + Ctr = 50

Rw + Ctr = 40

Rw + Ctr = 25

Situation

Walls between SOUs

Walls separating a unit from a kitchen, bathroom, sanitary compartment (not being an associated ensuite), laundry, plant room or utilities room

Floors separating SOUs

Impact Sound

N/A


N/A

Airborne Sound (Minimum)

Rw 45

Rw 45

Rw 45

4

Construction

Min. acoustic level:Rw + Ctr (not less than) 50Rw (not less than) 50



Deemed to Satisfy description

Two leaves of 110mm clay brick masonry with:

a) cavity not less than 50mm between leaves; and

b) 50mm thick Glasswool insulation with a density of 11kg/m3 or 50mm thick polyester insulation with a density of 20kg/m3 in the cavity.

Single leaf of 110mm clay brick masonry with:

a) a row of 70mm x 35mm timber studs or 64mm steel studs at 600mm centres,spaced 20mm from the masonry wall; and

b) 50mm thick mineral insulation or Glasswool insulation with a density of 11kg/m3 positioned between studs; and

c) one layer of 13mm plasterboard fixed to outside face of studs and outside face of masonry.

Single leaf of 90mm clay brick masonry with:

a) a row of 70mm x 35mm timber studs or 64mm steel studs at 600mm centres, spaced 20mm from each face of the masonry wall; and

b) 50mm thick mineral insulation or Glasswool insulation with a density of 11kg/m3 positioned between studs in each row; and

c) one layer of 13mm plasterboard fixed to studs on each outside face.

BCA ‘Deemed to Satisfy provision’ – Bradford basic acoustic solutionsListed are the BCA Deemed to Satisfy minimum systems and CSR Bradford Insulation product solutions to meet these BCA requirements.

MASONRY WALLS

Min. Acoustic Level: Rw + Ctr (not less than) 50 Rw (not less than) 50

Bradford Insulation products to meet BCA

Bradford Glasswool Partition Batts 50mm

Product Code: 15428


Product Code: 15428


Product Code: 15428

NB Standard polyester partition insulation, e.g. TSB, ASB density < 10kg/m3. Bradford Glasswool Partition Batts 11kg/m3. Bradford Rockwool SoundScreen™ insulation 30-40kg/m3.CSR Bradford Insulation recommends CSR Gyprock plasterboard and CSR PGH bricks be specified and supplied in the above systems.

CONCRETE WALLS



100mm thick concrete panel with:

a) a row of 64mm steel studs at 600mm centres, spaced 25mm from the concrete panel; and

b) 80mm thick polyester insulation or 50mm thick Glasswool insulation with a density of 11kg/m3, positioned between studs; and

c) two layers of 13mm plasterboard fixed to outside face of studs and one layer of 13mm plasterboard fixed to outside of concrete panel.



b) 70mm polyester insulation with a density of 9kg/m3 positioned between studs; and

c) one layer of 13mm plasterboard fixed to the outside face of the studs.

Construction





Product Code: 15428

Bradford Glasswool Partition Batts 50mm*

Product Code: 15428

*Substitute for 70mm polyester

Acoustic Assessment: PKA A032

NB Standard polyester partition insulation, e.g. TSB, ASB density < 10kg/m3. Bradford Glasswool Partition Batts 11kg/m3. Bradford Rockwool SoundScreen™ insulation 30-40kg/m3.CSR Bradford Insulation recommends CSR Gyprock plasterboard and Rinker concrete be specified and supplied in the above systems.

AUTOCLAVED AERATED CONCRETE (CSR HEBEL) WALLS


Bradford Insulation solution to meet BCA


Product Code: 15444


Product Code: 15428

and

Bradford Comfortseal R2.0 Glasswool Ceiling Batts

580mm x 105mm

Product Code: 15240




Product Code: 15428


Product Code: 15428



Construction




Min. acoustic level:Rw (not less than) 50


75mm thick autoclaved aerated concrete wall panels with:

a) a row of 64mm steel studs at 600mm centres, spaced 20mm from the autoclaved aerated concrete wall panels; and

b) 75mm thick Glasswool insulation with a density of 11kg/m3

positioned between studs; and

c) one layer of 10mm moisture resistant plasterboard or 13mm fire protective grade plasterboard fixed to outside face of autoclaved aerated concrete wall panel.

75mm thick autoclaved aerated concrete wall panel with:

a) a row of 64mm steel studs at 600mm centres, spaced 35mm from the autoclaved aerated concrete wall panels; and

b) 28mm metal furring channels fixed to the outside face of the autoclaved aerated concrete wall panel, with 50mm thick polyester insulation with a density of 9kg/m3 positioned between furring channels and one layer of 13mm fire protective grade plasterboard fixed to furring channels; and

c) 105mm thick Glasswool insulation with a density of 7kg/m3

positioned between studs; and

d) one layer of 13mm fire protective grade plasterboard fixed to outside face of the studs.

Two leaves of 75mm autoclaved aerated concrete wall panels with:

a) a cavity not less than 30mm between panels containing 50mm Glasswool insulation with a density of 11kg/m3; and

b) one layer of 10mm plasterboard fixed to outside face of each panel.

75mm thick autoclaved aerated concrete wall panel with:

a) one layer of 10mm moisture resistant plasterboard on one face; and

b) 28mm metal furring channels and resilient mounts,75mm polyester insulation with a density of 9kg/m3 and 13mm fire protective grade plasterboard fixed to the other face.

NB Standard polyester partition insulation, e.g. TSB,ASB density < 10kg/m3. Bradford Glasswool Partition Batts 11kg/m3. Bradford Rockwool SoundScreen™ insulation 30-40kg/m3.CSR Bradford Insulation recommends CSR Gyprock plasterboard and CSR Hebel autoclaved aerated concrete be specified and supplied in the above systems.

5

6

Construction






Two rows of 90 x 35mm timber studs or two rows of 64mm steel studs at 600mm centres with:

a) an air gap not less than 20mm between the rows of studs; and

b) 50mm thick Glasswool insulation or 60mm thick polyester insulation with a density of 11kg/m3*, positioned between one row of studs; and

c) two layers of 13mm fire protective grade plasterboard or one layer of 6mm fibre cement sheet and one layer of 13mm fire protective grade plasterboard, fixed to outside face of studs.

Two rows of 64mm steel studs at 600mm centres with:

a) an air gap not less than 80mm between the rows of studs; and

b) 200mm thick polyester insulation with a density of 14kg/m3, positioned between studs; and

c) one layer of 13mm fire protective grade plasterboard and one layer 13mm plasterboard on one outside face and one layer of 13mm fire protective grade plasterboard on the other outside face.

One row of 92mm steel studs at 600mm centres with:

a) 50mm thick Glasswool insulation with a density of 11kg/m3

or 60mm thick polyester insulation with a density of 8kg/m3, positioned between studs; and

b) two layers of 13mm fire protective grade plasterboard or one layer of 6mm fibre cement and one layer of 13mm fire protective grade plasterboard, fixed to each face.

One row of 64mm steel studs with:

a) one layer of 16mm fire protective grade plasterboard fixed to one face; and

b) 50mm thick mineral insulation or Glasswool insulation with a density of 11kg/m3 positioned between the studs; and

c) two layers of fire protective grade plasterboard fixed to the other face, the inner layer being 16mm thick and the outer layer being 13mm.



Product Code: 15428





Product Code: 15428


Product Code: 15428

NB *Standard polyester partition insulation, e.g. TSB, ASB density < 10kg/m3. Bradford Glasswool Partition Batts 11kg/m3. Bradford Rockwool SoundScreen™ insulation 30-40kg/m3.

CSR Bradford Insulation recommends CSR Gyprock plasterboard and CSR Fibre Cement be specified and supplied in the above systems.

Construction

Min. acoustic level:Rw + Ctr (not less than) 50Ln,w + Ci (not more than) 62Rw (not less than) 50


150mm thick concrete slab with:

a) 28mm metal furring channels and isolation mounts fixed to underside of slab, at 600mm centres; and

b) 65mm thick polyester insulation with a density of 8kg/m3, positioned between furring channels; and

c) one layer of 13mm plasterboard fixed to furring channels.



Product Code: 15428



NB Standard polyester partition insulation, e.g. TSB, ASB density < 10kg/m3. Bradford Glasswool Partition Batts 11kg/m3. Bradford Rockwool SoundScreen™ insulation 30-40kg/m3.

CSR Bradford Insulation recommends CSR Gyprock plasterboard and Rinker concrete be specified and supplied in the above systems.

TIMBER AND STEEL FRAME WALLS


CONCRETE FLOORS

Min. Acoustic Level: Rw + Ctr (not less than) 50 Ln,w + Ci (not more than) 62 Rw (not less than) 50

7


19mm thick chipboard floor sheeting with:

a) 190 x 45mm timber joists at 450mm centres; and

b) R2.5 Glasswool positioned between timber joists; and

c) 28mm metal furring channels and isolation mounts fixed to underside of joists, isolation mounts to be of natural rubber with a dynamic factor of not more than 1.1 and static deflection of not less than 3mm at actual operating load; and

d) two layers of 16mm fire protective grade plasterboard fixed to furring channels.

19mm thick tongued and grooved boards with:

a) timber joists not less than 175mm x 50mm; and

b) 75mm thick mineral insulation or Glasswool insulation with a density of 11kg/m3 positioned between joists and laid on 10mm thick plasterboard fixed to underside of joists; and

c) 25mm thick mineral insulation or Glasswool insulation with a density of 11kg/m3 laid over the entire floor, including tops of joists before flooring is laid; and

d) secured to 75mm x 50mm battens; and

e) the assembled flooring laid over joists, but not fixed to them, with the battens lying between the joists.

Construction




Bradford ComfortSeal™ R2.5 Glasswool Ceiling Batts 580 x 130mm

Product Code: 15254

Bradford ComfortSeal™ R1.5 Glasswool Wall and Floor Batts 580 x 75mm

Product Code: 15232

or

Bradford Rockwool SoundScreen™ Batts 75mm

Product Code: 16471

and

Bradford Multitel 25mm

Product Code: 16074


NB Standard polyester partition insulation, e.g. TSB,ASB density < 10kg/m3. Bradford Glasswool Partition Batts 11kg/m3. Bradford Rockwool SoundScreen™ insulation 30-40kg/m3.

CSR Bradford Insulation recommends CSR Gyprock plasterboard be specified and supplied in the above systems.

AUTOCLAVED AERATED CONCRETE (CSR HEBEL) FLOORS

Min. Acoustic Level: Rw + Ctr (not less than) 50 Ln,w + Ci (not more than) 62 Rw (not less than) 50


75mm thick autoclaved aerated concrete floor panels with:

a) 8mm ceramic tiles with flexible adhesive and waterproof membrane, located above the slab; and

b) timber joists at 600mm centres; and

c) R1.5 Glasswool insulation positioned between timber joists; and

d) 28mm metal furring channels and resilient mounts fixed to underside of joists; and

e) two layers of 13mm plasterboard fixed to furring channels.

Construction



Bradford ComfortSeal™ R1.5 Glasswool Wall and Floor Batts 580 x 75mm

Product Code: 15232

NB Standard polyester partition insulation, e.g. TSB, ASB density < 10kg/m3. Bradford Glasswool Partition Batts 11kg/m3. Bradford Rockwool SoundScreen™ insulation 30-40kg/m3.

CSR Bradford Insulation recommends CSR Gyprock plasterboard be specified and supplied in the above systems.

TIMBER FLOORS

Min. Acoustic Level: Rw + Ctr (not less than) 50 Ln,w + Ci (not more than) 62 Rw (not less than) 50 or 45

8

Services

Installation

Measure the circumference of the section being insulated (remembering to add twice the thickness of the Acoustilag 45 to the diameter). Add 50mm to 100mm for a lap seam and cut to length. Remove 50mm to 100mm of Glasswool along one edge to provide for the lap. After wrapping the lap can be taped using a quality aluminium tape with a four zero fire rating.

Insulation

Nil

R 1.5 Glasswool

Nil

R 1.5 Glasswool

R 1.5 Glasswool

Nil

R 1.5 Glasswool

R 1.5 Glasswool

R 1.5 Glasswool

No. of recessed light fittings

Nil

2 x Halogen

3 x Halogen

4 x Halogen

5 x Halogen

4 x Halogen

5 x Halogen

Nil

2 x Halogen

Toilet exhaust grille

Nil

One

Nil

One

One

Nil

One

Nil

One

Comments

3kg Soundlag and 25mm Flexitel









Rw + Ctr = 40

Pipe wrap

3kg Soundlag

3kg Soundlag

3kg Soundlag

3kg Soundlag

3kg Soundlag

3kg Soundlag

3kg Soundlag

3kg Soundlag

3kg Soundlag

Insulation

R 1.5 Glasswool

Nil

R 1.5 Glasswool

R 1.5 Glasswool

Nil

R 1.5 Glasswool

R 1.5 Glasswool

R 1.5 Glasswool

R 1.5 Glasswool

R 1.5 Anticon

No. of recessed light fittings

Nil

Nil

4 x Halogen

2 x Halogen

Nil

4 x Halogen

3 x Halogen

Nil

2 x Halogen

3 x Halogen

Toilet exhaust grille

Nil

Nil

Nil

One

Nil

Nil

One

Nil

Nil

One

Comments

Nil

Foil placed upwards

Rw + Ctr = 25

Pipe wrap

Nil

Nil

Nil

Nil

Nil

Nil

Nil

Nil

Nil

Nil

Schedule of CSR Bradford Acoustilag 45 and ceiling systems to comply with BCA requirements – Rw30

Schedule of CSR Bradford Acoustilag 45 and ceiling systems to comply with BCA requirements – Rw45

Ceiling

10 CSR Gyprock

10 CSR Soundchek™

10 CSR Soundchek™

10 CSR Soundchek™

13 CSR Soundchek™

13 CSR Soundchek™

13 CSR Soundchek™

13 CSR Gyprock

13 CSR Gyprock

13 CSR Gyprock

Ceiling

10 CSR Gyprock

10 CSR Gyprock

10 CSR Soundchek™

10 CSR Soundchek™

10 CSR Soundchek™

13 CSR Soundchek™

13 CSR Soundchek™

13 CSR Gyprock

13 CSR Gyprock

9

Verification by site testing

The on-site testing requirements for Class 2 and 3 buildings appear as Verification Methods. These are lower sound ratings than the Deemed to Satisfy requirements because they are on site, not in a laboratory. For elements tested onsite, the airbourne sound insulation requirements are as follows:

For impact sound insulation, the relevant terms are: weighted standardised impact sound pressure level (LnT,w), and spectrum adaptation term (C1). LnT,w + C1 is similar to the laboratory term LnT,w + C1. For airbourne sound insulation when tested on site, the terms are weighted standardised level difference (DnT,w) and spectrum adaption term (Ctr). DnT,w is similar to laboratory term Rw.

DnT,w

45 min.

25 min.

Element

Class 2 and 3Floors separating SOUs

Walls separating SOUs

Walls separating SOUs from public corridor, lobby, etc.

Door assembly in a wall separating SOUs from public corridor, lobby, etc.

DnT,w + Ctr

45 min.

45 min.

LnT,w + C1

62 max.

Test not specified

Airbourne Sound Impact Sound

Internal office insulationThere is a wide range of different noises generated in commercial buildings which are broadly classified as airborne noise (via the structure). Airborne noises include speech, computers, fax machines, photocopiers and other office equipment. These noises can be a major source of distraction and annoyance to occupants of a building, having an impact on productivity.

A major source of intrusive noise is through the partition walls, and flanking noise which enters the adjoining office through the ceiling void.

CSR Bradford Insulation have investigated solutions to minimise the discomfort of these noises and help maintain a healthy work environment.

Description

Dry wall

64mm metal studs, lined with one layer of 13mm Gyprock plasterboard CD each side, with an infill of 50mm Bradford Glasswool partition batts.

Bradford Acoustistar insulation

64mm metal studs, lined with one layer of 13mm Gyprock Soundchek™ each side, with an infill of 75mm Bradford Glasswool partition batts.

Performance

Rw 41

Rw 46

Internal office walls

10

Bradford Acoustistar™ systems

Bradford Acoustistar systems

Rw + Ctr = 55Two rows of 64mm steel studs at 600mm centres with:

a) an air gap not less than 20mm between rows of studs; and

b) 165mm Bradford Glasswool Partition Batts 11kg/m3 mtr positioned between studs; and

c) one layer of 16mm Fyrechek™ and one layer of 10mm Gyprock board CD on one side only

d) one layer of 16mm Fyrechek™ and two layers of 10mm Gyprock board on the other face.


Rw + Ctr = 55 Single wall of 110mm clay brick with:

a) 64mm steel studs on both sides, with a 20mm gap; and

b) one layer of 13mm Gyprock board CD on each face; and

c) 50mm Bradford Glasswool Partition Batts between studs on both sides.


Rw + Ctr = 60 125mm thick concrete panel with:


b) 75mm Bradford Glasswool Partition Batts positioned between studs; and

c) one layer of 13mm Gyprock plasterboard CD fixed to the outer face of the stud.


Rw + Ctr = 59 Two rows of 75mm thick Hebel Powerpanel™ with:

a) a 30mm cavity; and

b) 10mm Gyprock plasterboard CD attached to each outside face; and

c) 50mm Bradford Glasswool Partition Batts fitted to cavity.

Acoustic Opinion: (2001502/1109A/R4/VF)

Bradford economical BCA alternatives

Rw + Ctr not less than 50Two rows of 64mm steel studs at 600mm centres with:

a) an air gap of not less than 20mm between rows of studs; and

b) 165mm Bradford Glasswool Partition Batts* 11kg/m3 mtr positioned between studs; and

c) one layer of 13mm CSR Fyrcheck on each outside face.


Rw + Ctr not less than 50Two leaves of 110mm clay brick masonry with:

a) a cavity of not less than 50mm; and

b) 50mm thick Bradford Glasswool Partition Batts in the cavity.


Rw + Ctr not less than 50125mm thick concrete panel with:


b) 50mm Bradford Glasswool Partition Batts positioned between studs; and

d) one layer of 10mm Gyprock plasterboard CD fixed to the outer face of the stud.


BCA Deemed to Satisfy

DRY WALLRw + Ctr not less than 50

Two rows of 64mm steel studs at 600mm centres with:

a) an air gap of not less than 80mm between the rows of studs; and

b) 200mm thick polyester insulation with a density of 14kg/m3 mtr, positioned between studs; and

c) one layer of 13mm fire protective grade plasterboard and one layer of 13mm plasterboard on one outside face and one layer of 13mm fire protective grade plasterboard on the other outside face.

MASONRY WALLRw + Ctr not less than 50

Two leaves of 110mm clay brick masonry with:

a) a cavity not less than 50mm; and

b) 50mm thick Glasswool (11kg/m3 mtr) or 50mm polyester 20kg/m3 mtr) in the cavity.

CONCRETE WALLRw + Ctr not less than 50



b) 70mm polyester insulation with a density of 9kg/m3 mtr positioned between studs; and

c) one layer of 13mm plasterboard fixed to the outside face of the stud.

AUTOCLAVED AERATED CONCRETE WALLSRw + Ctr not less than 50

75mm thick autoclaved aerated concrete wall panels with:

a) a row of 64mm steel studs at 600mm centres, spaced 20mm from the wall panels; and

b) 75 mm thick Glasswool insulation with a density of 11kg/m3 mtr positioned between studs; and

c) one layer of 10mm moisture resistant plasterboard or 13mm fire protective grade plasterboard fixed to outside face of the autoclaved aerated concrete wall panel.

For alternative flooring systems refer to the CSR Gyprock Red Book.

* Bradford Glasswool Partition Batts 165mm provide an excellent and low cost alternative wall system to meet the BCA. This new product from Bradford Insulation is available in a standard size of 8.1m x 600mm x 165mm.

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Suspended ceilings

Bradford Soundlag used in the ceiling space as above can stop up to 25dB of noise travelling through the ceiling void. Acoustic Assessment: PKA 033.

Bradford SoundScreen™ used in the ceiling space as above can stop up to 20dB of noise travelling through the ceiling void. Acoustic Assessment: PKA 033.

ServicesNoise from waste pipes can be treated by the use of Bradford Acoustilag 45 (refer diagram on page 8).

Noise problems in homesNoise in the home can be a major source of annoyance, especially in today’s environment where people are living closer together, more open plan house design, and the growth of home theatres and higher capacity Hi-Fi equipment.

Some of the problem areas are: bathrooms, bedrooms, kitchens, laundries, external walls and floors between levels. Some of the problem sounds are: music, television, toilets, appliances, footsteps and voices.

CSR Bradford Insulation have solutions to help minimise these noises to make your home peaceful and comfortable.

Internal wall system Floor/ceiling system Exterior wall system

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Home theatreTo enable a full system approach to noise management in homes, CSR Bradford Insulation and CSR Gyprock have developed many combinations to offer various levels of protection. With home theatres becoming more popular CSR have developed systems which will minimise the transmission of noise to other areas of the house and neighbourhood.

Internal walls Exterior walls

Floor/ceiling Roof

For other systems and details to control flanking noise, refer to the CSR Gyprock Red Book.

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Glasswool densityWhilst standard density of Bradford Glasswool Partition Batts is 11kg/m3 some specifications call for 14kg/m3. Testing conducted by PKA & Associates indicates that whilst Rw is improved by the incremental density the overall Rw + Ctr remains the same for 11kg/m3 and 14kg/m3. Both densities are available from CSR Bradford Insulation.

Bradford Glasswool Partition Batts

11kg/m3 50mm, 75mm and 165mm

14kg/m3 50mm, 75mm

All products included in Bradford Acoustic Systems in this brochure are standard 11kg/m3.

The environment With increasing pressures on our environment, focus is sharpening on ways in which more ‘environmentally friendly’ products can be used. Insulation products are one of the few building materials which make a positive contribution to improving the environment. With Glasswool and Rockwool the ‘embodied energy’ is recovered more than 100 times, and in some cases 400 times over the lifetime of the product.

Glasswool manufactured by CSR Bradford Insulation contains up to 70% recycled material in the form of waste glass. Rockwool contains up to 25% recycled waste products.

Using these products translates to reductions in the amount of fossil fuel burned to generate that energy, and a reduction in harmful greenhouse gas emissions.

Glasswool and Rockwool insulation products are the leading choice for sustainable energy conservation worldwide.

Bradford ComfortSleeve™

A recent survey conducted by CSR Bradford Insulation of over 200 commercial contractors and specifiers suggests that whilst 74% were aware that Glasswool and Rockwool fibres were no longer considered hazardous, many were still concerned about possible irritation during installation.

CSR Bradford Insulation considers its current Glasswool and Rockwool production formulations to be low irritant and low allergen. Any irritation that may exist during installation is mild and easily managed with basic personal protective equipment and measures as detailed in our MSDS and union handbook.

To further enhance the ease of installation of Bradford Glasswool and Rockwool we are pleased to introduce a major international innovation – Bradford ComfortSleeve™.

For the first time the insulation industry has a purpose built glove for installing insulation. CSR has applied for a design patent on this invention – unique to CSR Bradford Insulation.

For more information or to contact your nearest

CSR Bradford distributor call 1300 850 305 or

visit www.bradfordinsulation.com.au

CSR Bradford Insulation

55 Stennett Rd, Ingleburn NSW 2565 Australia

Telephone (02) 9765 7000 Facsimile (02) 9765 7002

CSR Bradford Insulation is a business division of

CSR Building Products Limited ABN 55 008 631 356

TGH

BR03

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F O R M O R E I N F O R M AT I O N

Documents

Bradford Acoustistar - B&B Insulationsbbinsulations.com.au/techinfo/PDFs/Brochures/Acoustistar_LR.pdf · solutions to meet bca sound insulation provisions bradford glasswool insulation