nofisol fire and sound barriers: field of application with...

Nofisol fire and sound barriers: Field ofapplication with respect to fire resistance

Investigations based on “expert judgement”

Report number YA 1525-1E-RA-001 d.d. May 9, 2014

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Nofisol fire and sound barriers: Field ofapplication with respect to fire resistance

Investigations based on “expert judgement”

peutz bv, postbus 66, 6585 zh mook, +31 24 357 07 07, [email protected], www.peutz.nl

All orders are accepted and executed according to 'De Nieuwe Regeling 2011' (The New Rules)

BTW NL004933837B01 KvK: 12028033

mook – zoetermeer – groningen – düsseldorf – dortmund – berlijn – leuven – parijs – lyon – sevilla

YA 1525-1E-RA-001 2

Ta b l e o f c o n t e n t s

1 I n t r o d u c t i o n 4

2 S t a r t i n g p o i n t s 5

2 . 1 G e n e r a l 5

2 . 2 D e s c r i p t i o n o f t h e a s s e s s e d c o n s t r u c t i o n s 5

3 T e s t r e p o r t s a n d r e s e a r c h r e s u l t s 6

3 . 1 R e p o r t s u t i l i s e d 6

3 . 2 Te s t r e s u l t s 7

4 F i r e r e s i s t a n c e c l a s s i f i c a t i o n 8

4 . 1 U s e o f t a l l e r b a r r i e r s 8

4 . 2 U s e o f l o n g e r ( w i d e r ) b a r r i e r s 9

4 . 3 U s e o f t h i c k e r b a r r i e r s 9

4 . 4 U s e o f h e a v i e r r o c k w o o l 9

4 . 5 C h a n g i n g t h e i n t e r m e d i a t e l a y e r s u s e d 1 0

4 . 6 U s e o f m u l t i p l e l a y e r s o f r o c k w o o l 1 0

4 . 7 A d d i n g a c a v i t y 1 0

4 . 8 E x c l u d i n g g y p s u m f r o m t h e b a n d r a s t e r 1 0

4 . 9 O t h e r a t t a c h m e n t a n d f i n i s h f o r t h e b a r r i e r s a n d t h e b a n d r a s t e r 1 1

4 . 1 0 U s e a s s m o k e r e s i s t a n t b a r r i e r s 1 2

4 . 1 1 S u m m a r y o f t h e i m p a c t o f t h e d i f f e r e n t p a r a m e t e r s 1 3

4 . 1 2 S u m m a r y o f t h e m a x i m u m d i m e n s i o n s t o b e u s e d 1 4

5 S u m m a r y 1 5

YA 1525-1E-RA-001 3

1 I n t r o d u c t i o n

On behalf of Nofisol B.V., an investigation was performed to determine the possible field of application with respect to the fire resistance of a number of tested fire and sound barriers from Nofisol (hereinafter called the “barriers”). This report describes the field of application based on the results of a total of 5 fire resistance tests in combination with an expert judgement. The broadest possible field of application for the different tested constructions was specifically requested. The assessed parameters in this context are:− the height of the separate barriers;− the length (width) of the separate barriers;− the thickness and weight of the separate barriers;− the use of intermediate layers (e.g. spacers and aluminium foil);− the number of layers for the separate barriers;− the presence or absence of a cavity when there are multiple layers;− the manner of fastening the barriers to the wall (bandraster);− the manner of attachment and finish of the barriers.

Three of the fire resistance tests were “full-scale tests”. In the other two tests, multiple variants were assessed (“small-scale tests”) where one barrier is included that was also assessed in one of the “full-scale tests”. Comparing the results of both tests for this barrier makes it possible to express opinions also about the field of application of the other tested barriers in the “small-scale tests”.

Barriers above the inner walls are assessed in the Netherlands in accordance with NEN 6069 and EN 1364-1 using the following criteria:− integrity (E);− thermal insulation (I).

This means that the “radiation” criterion (W) does not need to be assessed. Assessments in this report are only valid for the situation where barriers are above the partitions, consisting of a flexible wall where it can be demonstrated that this wall satisfies the relevant required fire resistance that the barrier will be used for.

The findings in this report (including the specified field of application) are valid for a maximum period of 5 years after the creation date of this report.

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2 S t a r t i n g p o i n t s

2.1 G e n e r a l

This report has been drawn up as much as possible in accordance with:− EN 15725:2010: “Extended application reports on the fire performance of construction

products and building elements”− Draft EN 15254-1:2005: “Extended application of results from fire resistance tests - Non-

loadbearing partitions - Part 1: General”

In drawing up this report, use was made of some issued test reports that were provided by the client. The client indicated that the issued reports could be used for substantiation as needed.

2.2 D e s c r i p t i o n o f t h e a s s e s s e d c o n s t r u c t i o n s

The assessed constructions were barriers consisting of one or two layers of rock wool where the exterior had an applied layer of aluminium foil with or without a layer of a self-adhesive EPDM foil on one side or on both sides for its acoustic properties. The barriers were installed above a bandraster filled with plasterboard panels suspended using Nonius hangers on the overlying stony ceiling structure. The barriers were placed tightly together and connected by means of a special fire-resistant glue.

See the drawings in Appendix I for the dimensions and description of materials for the tested constructions.

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3 Te s t r e p o r t s a n d r e s e a r c h r e s u l t s

3.1 R e p o r t s u t i l i s e d

Table 3.1 provides an overview of the test reports utilised to substantiate the conclusions in this report. The reports were issued by the client who provided permission to use the reports for the purpose of substantiation. The reports numbered Y 1519-1E-RA-001, Y 1524-1E-RA-001 and 2005-CVB-R0185 (Rev. 1) describe the “full-scale tests”. The other reports describe the “small-scale tests”.

t3.1 Overview of the reports utilised

Name of the laboratory or

notified body

Name of client Number and date of the test report Method used

Peutz bv Nofisol bv Y 1519-1E-RA-001 dated 14 March 2014 EN 1364-1:1999






TNO Centre for Fire Safety Nofisol Europe bv 2005-CVB-R0185(Rev.1) dated September 2006 NEN 6069:2001 / EN 1364-1:1999

TNO Centre for Fire Safety Nofisol Europe bv 2005-CVB-R0185(Rev.1) dated September 2006 NEN 6069:2001 / EN 1364-1:1999

The more significant test results are summarised in the following section. Table 3.2 provides an overview of these results including a short description of the most significant failure mechanism, if applicable.

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3.2 T e s t r e s u l t s

t3.2 Overview of the most significant test results for the reports utilised

Report number Attained fire resistance for criterion Most significant failure mechanism

product name integrity (E) thermal insulation (I)

Y 1524-1E-RA-001

Nofisol 21 / Nofisol 22

59 minutes1 13 minutes integrity attained due to an opening arising between the bandraster and wall

structure where sustained flaming for longer than 10 seconds was visible

(wall connection is not a component of the tested product)

Y 1524-1E-RA-001

Nofisol 33

≥ 75 minutes2 36 minutes integrity not attained during the test;

thermal insulation criterion attained by too high average temperature rise 3

Y 1524-1E-RA-002

Nofisol 33

≥ 135 minutes4 45 minutes4 integrity not attained during the test;

thermal insulation criterion attained by too high average temperature rise

Y 1525-1E-RA-003

Nofisol 33-LP



Y 1525-1E-RA-004

Nofisol 38 High Value dB



Y 1525-1E-RA-005

Nofisol 40 High Value dB



2005-CVB-R0185(Rev.1)

Nofisol 335

53 minutes6 50 minutes4 integrity attained through open seam in the wall beneath it;


2005-CVB-R0286(Rev.1)

Nofisol 277

Nofisol 335

Nofisol 22-i

Nofisol 225

4

≥ 87 minutes

≥ 87 minutes

≥ 87 minutes

≥ 87 minutes

4

40 minutes

58 minutes

30 minutes

24 minutes

integrity not attained during the test;


Comment: during the tests, no test measured a temperature higher than 300 °C on the barriers. Based on EN 1363-2:1999, it can be stated that the barriers during the period where the criterion for integrity (E) was satisfied also satisfied the criterion for radiation (W).

1 Tested using standard flexible wall EI 302 Tested using standard flexible wall EI 603 Possible negative impact through distortion of bandraster on the free edge4 Tested in a llow density rigid construction5 The composition of the rock wool used for this test is not the same as for the latest test6 Tested using associated supporting construction maximally classified as EI 457 The product name specified in the report is Nofisol 25. However, this was changed to Nofisol 27. See the report by

Efectis numbered 2009-Efectis-R1068 dated December 2009

YA 1525-1E-RA-001 7

4 F i r e r e s i s t a n c e c l a s s i f i c a t i o n

This chapter successively covers the different extrapolation options with respect to the fire resistance of the assessed constructions.The construction of the assessed constructions is based on the constructions tested on 28 January and 5 February 2014 by Peutz bv in the Peutz Laboratory for Fire Safety. See test reports Y 1519-1E-RA-001 en Y 1524-1E-RA-001 dated 14 March 2014. The assessments concentrate on possible extensions of the field of application with respect to the direct application areas that arose as an outcome of the test results.

It is emphatically stated that the assessments in this report are only valid for the situation where barriers are above a flexible partition where it can be demonstrated that these satisfy the relevant required fire resistance that the barrier will be used for.

4.1 U s e o f t a l l e r b a r r i e r s

The direct application in accordance with EN 1364-1:1999 indicates that walls with a test height of minimally 3 m may be used to 4 m with the proviso that this is tested with a free edge and the measured displacement during the test never exceeds 100 mm. For the 3 full-scale tests, the measured displacement in all cases was less than 100 mm. Peutz’s opinion is that the height of the barrier may be adjusted in proportion, i.e. 33% higher. In accordance with prEN 15254-1:2005, walls taller than indicated according to the direct field of application are only permitted with the proviso that sufficient testing shows what impact the higher walls (barriers) have on the fire resistance of the construction. Given the behaviour of the wall structures and barriers, it can be concluded from the outcome of the different tests that taller barriers do not directly lead to a reduction of fire resistance of the construction as long as the wall itself (including the barriers) is never taller than 4 m. Peutz’s opinion is that all barriers assessed in this report may be adjusted to a maximum height, which follows for the height used of a tested barrier (with the necessary fire resistance) multiplied by 133%. The height is determined using the height of the tested barrier including the height of the bandraster used.

The above is elaborated in Table 4.3 on page 14.

YA 1525-1E-RA-001 8

4.2 U s e o f l o n g e r ( w i d e r ) b a r r i e r s

The direct field of application in accordance with EN 1364-1:1999 indicates that tested walls with a height and a width of minimally 3 m can be unrestrictedly made wider when these are tested with a free edge. The width of the barrier according to the direct field of application may not be more than the width. In accordance with prEN 15254-1:2005, partitions wider than indicated according to the direct field of application are only permitted when sufficient testing shows that the wider barriers have no negative effect on the fire resistance of the construction. Given the behaviour of the barriers, it can be concluded from the outcome of the different tests that wider barriers do not directly lead to a lowering of fire resistance of the construction as long as the wall itself (including the barriers) is never taller than 4 m. However, wider barriers also means that there will be an increase in the underlying attachment distance of the bandraster using the Nonius hangers. According to the direct field of application, this is not permitted and is also not in accordance with prEN 15254-1:2005 without supplementary test evidence. As such, Peutz’s opinion is that all barriers assessed in this report may be adjusted to a maximum width of 1200 mm. The complete partition (consisting of several barriers) may be wider.

The above is elaborated in Table 4.3 on page 14.

4.3 U s e o f t h i c k e r b a r r i e r s

The direct field of application permits components (layers) of the construction to be thicker than that tested. This applies to both the rock wool used and to any EPDM foil used as for any cavity width used. For the latter, however, Peutz’s opinion is that the cavity may only be unrestrictedly made wider with the proviso that both layers of rock wool on both sides of the construction are thoroughly glued to the enclosing constructions and that the total width of the partition fits within the bandraster used.

Making the tested barriers thinner is not permitted. This applies to both the rock wool used and to any EPDM foil used as for any cavity width used. The exclusion of any utilised EPDM foil or cavity is not permitted, therefore.

4.4 U s e o f h e a v i e r r o c k w o o l

The direct field of application does not allow for any other rock wool than that tested. In accordance with prEN 15254-1:2005, this is allowed when it can be demonstrated that the rock wool to be used has at least the same fire-resistant properties as the tested rock wool. The test results from the different tests show that heavier rock wool is paired with a higher fire resistance in minutes both for the “integrity” (E) criterion as for the “thermal insulation” (I) criterion and thus also the “radiation” (W) criterion. As such, Peutz’s opinion is that a rock wool having a higher density may be used provided that the same thickness is used as that tested, but that a rock wool lighter than tested is not permitted.Replacing the rock wool with glass wool is not permitted.

YA 1525-1E-RA-001 9

4.5 C h a n g i n g t h e i n t e r m e d i a t e l a y e r s u s e d

The tested barriers were fitted with multiple laminations, e.g. aluminium foil, EPDM foil and/or a fibreglass layer. For some tested barriers, there was also a cavity between the two layers with rock wool where plastic spacers were used.

The direct field of application does not allow changes to be made to the intermediate layers. In accordance with prEN 15254-1:2005, this is allowed provided that it can be demonstrated that changing the intermediate layers does not have a negative effect on the fire resistance of the construction. Peutz does not have any test results available that show that changing the intermediate layers used will not have a negative effect on the integrity of the barriers. As such, Peutz’s opinion is that changing the intermediate layers, the replacement by other materials or its exclusion, is not permitted.

4.6 U s e o f m u l t i p l e l a y e r s o f r o c k w o o l

The direct field of application does not allow for any more layers of rock wool than that tested. In accordance with prEN 15254-1:2005, this is allowed provided that it can be demonstrated that adding extra layers of rock wool does not have a negative effect on the fire resistance of the construction. This is substantiated by the different test results. As such, Peutz’s opinion is that extra layers of rock wool may be used with the proviso that the layer thickness and the number of layers of the tested construction used and that the outermost layers are attached using the same method as the tested barriers.Reducing the number of layers of rock wool is not permitted.

4.7 A d d i n g a c a v i t y

The direct field of application does not permit the addition of a cavity. In accordance with prEN 15254-1:2005, this is allowed when it can be demonstrated that adding a cavity does not have a negative effect on the fire resistance of the construction. This is substantiated by the different test results. As such, Peutz’s opinion is that adding a cavity is allowed as long as minimally the layer thickness of the tested construction is maintained (for multiple layers of the tested barriers all layer thickness's must be maintained) and that the outermost layers must be attached in the same manner as the tested barriers.The exclusion of a cavity in the tested construction is not permitted. See also section 10.

4.8 E x c l u d i n g g y p s u m f r o m t h e b a n d r a s t e r

Based on the direct field of application and based on prEN 15254-1:2005, it is not permitted to exclude the gypsum from the bandraster. Peutz does not have any test results available that show that the exclusion of the gypsum will not have a negative effect on the fire resistance of the tested constructions. As such, the exclusion of gypsum from the bandraster is not permitted.

YA 1525-1E-RA-001 10

4.9 O t h e r a t t a c h m e n t a n d f i n i s h f o r t h e b a r r i e r s a n d t h e b a n d r a s t e r

Based on the direct field of application and based on prEN 15254-1:2005, it is not permitted to change the attachment of the barriers and/or the bandraster as compared to the tested situations. Peutz does not have any test results available that show that changing the attachment for the barriers (other glue or attachment mechanisms) or for the bandraster (including type of Nonius hangers) does not have any effect on the fire resistance of the tested constructions. The changing of the attachment of the barriers or the bandraster is not permitted.

This also applies for any EPDM foil used. This may only be attached using the self-adhesive layer of the EPDM foil.

All tested barriers are fitted on the outside with an aluminium foil. Taping the seams with aluminium tape improves the acoustic properties of the barriers. Taped barriers are more air tight than non-taped barriers. If taped partitions are exposed to the standard heating curve, at the start the air from the fire side (furnace) will not permeate as easily to the non-fire side of the construction. This has a favourable effect on the smoke movement and the temperature development on the non-fire side of the construction. This means that the taping of the seams has no negative impact on the fire resistance of the construction. As such, taping the seams for the barriers with aluminium tape is permitted. Other finishes that were not tested as part of the testing of the barriers are not permitted.

YA 1525-1E-RA-001 11

4.10 U s e a s s m o k e r e s i s t a n t b a r r i e r s

The smoke resistance of the barriers was determined in accordance with NEN 6075:2011. The following assumptions were made:− The resistance to smoke movement was calculated by multiplying the attained fire

resistance for the ‘integrity’ criterion for the relevant barrier by a factor of 1.5.− If the fire resistance in the previous point mentioned was greater than 20 minutes (E 20),

then the relevant barrier may be assigned a smoke permeability Sa in accordance with NEN 6075:2011.

− If the fire resistance in the first point mentioned was greater than 30 minutes (E 30), then the relevant barrier may be assigned a smoke permeability Sm in accordance with NEN 6075:2011.

− If a smoke permeability Sm is assigned to a barrier, then the relevant barrier may also be assigned a smoke permeability Sa.

Table 4.1 indicates what the foregoing means for the barriers assessed in this report. For clarity’s sake, note that the indications Sa and Sm specified in the table do not indicate a classification for the relevant products. In accordance with NEN 6075:2011, it may be supposed that the products satisfy the relevant requirements for the indicators.

t4.1 Smoke resistance of the barriers based on NEN 6075:2011

Product name Resistance to smoke movement Smoke permeability

Nofisol 21 88 minutes Sm



Nofisol 33-LP 202 minutes Sm

Nofisol 38 High Value dB 202 minutes Sm

Nofisol 40 High Value dB 202 minutes Sm

YA 1525-1E-RA-001 12

4.11 S u m m a r y o f t h e i m p a c t o f t h e d i f f e r e n t p a r a m e t e r s

Table 4.2 lists the impact of changes to different parameters on the fire resistance of the barriers divided up by assessment criterion. This table is only meant to provide an impression of the impact of the parameters on the fire resistance. The table is not intended for purposes of making additional extensions to the field of application. For example, it is not permitted to make the barriers lighter (leads to a lower fire resistance) and at the same time compensate him by making these thicker (leads to a higher fire resistance).

The capital letters in the table have the following meaning:− X: negative impact, the criterion is attained earlier due to the change− N: neutral, the criterion is probably attained as quickly due to the change− +: positive impact, the criterion is attained later due to the change− -: impact is not clear and/or dependent on multiple factors

t4.2 Parameters’ impact on the fire resistance of the barriers

Parameter and corresponding change Criterion:

integrity (E)

Criterion:

thermal insulation (I)

Criterion:

radiation (W)

greater height - barriers X N X

greater height – wall X N X

greater width - barriers X N X

greater width - wall N N X

greater thickness - barriers + + +

greater mass - barriers + + +

adding extra layers of rock wool + + +

adding a cavity in the barriers – + +

decreasing amount of gypsum in the bandraster X X N

different attachment for the barriers – – N

different attachment for EPDM foil – X N

different attachment for the bandraster – – N

YA 1525-1E-RA-001 13

4.12 S u m m a r y o f t h e m a x i m u m d i m e n s i o n s t o b e u s e d

t4.3 Overview of the maximally permitted dimensions for the tested barriers

Fire resistance

(maximum required classification)

Product name Maximum width

barrier

[mm]

Maximum height

barrier

[mm]

Maximum width

wall

[mm]

Maximum height

wall

[mm]

E 30 / EW 30 Nofisol 21 1200 900 unrestricted 4000

EI 30

EW 60

E 60

Nofisol 27 1200 900 unrestricted 4000


Nofisol 33-LP 1200 900 unrestricted 4000

EI 45 / EW 60 / E 60Nofisol 38 High Value dB 1200 900 unrestricted 4000

Nofisol 40 High Value dB 1200 900 unrestricted 4000

EW 90 / E 90 Nofisol 27 1200 675 unrestricted 3000

EW 120

E 120


Nofisol 33-LP 1200 675 unrestricted 3000

Nofisol 38 High Value dB 1200 675 unrestricted 3000

EI 60 / EW 120 / E 120 Nofisol 40 High Value dB 1200 675 unrestricted 3000

The maximally permitted height of the barriers is inclusive of the bandraster to be utilised. To attain the actual height of the barriers the height of the bandraster must be subtracted.

YA 1525-1E-RA-001 14

5 S u m m a r y

An investigation was performed to determine how much the direct field of application in accordance with the testing standard (EN 1364-1) can be extended for the tested fire and sound barriers of Nofisol (“barriers”). The investigation occurred based on specific assessments on the most significant parameters for the tested constructions. In broad outline, it follows from this investigation that one or more of the following changes may be applied:− the height and width of the wall and of the separate barriers may be reduced;− the height and width of the wall with the barriers may be reduced;− the height of the barriers may be increased to a maximum of 900 mm (bandraster

included) up to a specified required fire resistance;− the height of the wall with the barriers may be increased to a maximum of 4000 mm up to

a specific required fire resistance;− unrestricted widening of the wall with the barriers;− the thickness of the barriers (rock wool and/or EPDM foil and/or cavity) may be increased;− the use of heavier rock wool with the proviso that the thickness of the tested construction

is at least the same;− the addition of extra layers of rock wool with the proviso that the thickness of the original

layers remains the same;− the addition of a cavity with the proviso that the thickness of the original layers remains

the same;− the taping of the seams for the barriers with aluminium tape.

The extended field of application is only valid for the assessed constructions and under the specified conditions described in this report. Deviations, other than described in this report or in the application area of the tested constructions as specified in Chapter 3, are not permitted.

The fire resistance of the considered changes with respect to the tested construction can only be established with certainty based on a fire resistance test in accordance with EN 1364-1.

Mook,This report contains 15 pages

6 appendices: drawings and product descriptions of the tested constructions

YA 1525-1E-RA-001 15

Nofisol barrierlength height thickness material lamination

tradename

Glass flees

Alu foil

30 mm rock wool

Air cavity 6 mm + spacers

EP 4,5 alu foil

Bandraster

2x 12,5 mm plasterboard

cellular concrete lintel

Nofisol glue, gradually to 10 cm after installation using a caulking gun glued

free edge connection Nonius upper part

Bandraster with 2x 12,5 mm plasterboard

test frame

Bandraster

2x 12,5 mm plasterboard

cellular concrete lintel

Bandraster with 2x 12,5 mm plasterboard

Nonius upper partfree edge connection

Nofisol glue, gradually to 10 cm after installation using a caulking gun glued

nofisol fire and sound barriers: field of application with...

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