Underlay

FR7

Suitable for heavy contract areas (Airports, Hotels, Banks, Theatres, Lobbies and other high traffic areas)
. Made from the finest recycled foam compounds; Passes flammability tests
. Minimises furniture indentation marks; Ideal for border and design installations
. Excellent impact sound insulation and absorption; Increased underfoot comfort
. Suitable for the stretch-fit and double-stick installation of carpets

 

TECHNICAL SPECIFICATIONS:
(Test Results To BS. 5808: 1991 - British Standard For Carpet Underlays)

SPECIFICATION

BS REQUIREMENTS

RESULT

METHOD

WEIGHT

 

1015 g/m² (30 oz/yd²)

  

THICKNESS

 

7 mm

BS 4051

ROLL SIZE

 

1.37m x 11m

  

ROLL WEIGHT

 

15.30 kg (33.7 lbs)

 

BREAKING STRENGTH
Warp
Weft

Minimum 40N

 
90 N
50 N

BS 2576

EXTENSION UNDER FORCE
Warp
Weft

Maximum 10% @ 40N

 
10%
10%

BS 2576

WORK OF COMPRESSION

Min. 50 J/m² after dynamic loading for 1000 impacts

140 J/m²

BS 4098
& BS 4052

COMPRESSION AFTER DYNAMIC LOADING

Minimum 2mm, maximum 7mm after 1000 impacts

2.0mm

BS 4098
& BS 4052

RETENTION OF WORK OF COMPRESSION

Min. 40% of original after dynamic loading for 1000 impacts

90%

BS 4098
& BS 4052

LOSS IN THICKNESS AFTER DYNAMIC LOADING

Max. 15% after 1000 impacts

5%

BS 4052

LOSS IN THICKNESS AFTER STATIC LOADING

Max. 15% after 24 hrs recovery

5%

BS 4939

RESISTANCE TO CRACKING

Not greater than 50mm

Pass

BS 5808

ODOUR

No objectionable odour

Pass

BS 5808

ORIGIN

United Kingdom

END OF CLASSIFICATION

HC/U, Heavy Contract Use

BS 5808:1991

Thermal Resistance

 

1.93 togs ‡

BS 4745

Impact sound reduction (Delta Lw)

 

35 dB ‡

BSEN ISO 140-8: 1998
& BSEN ISO 717-2: 1997

Emissions

Meets low VOC emission criteria

US Carpet & Rug Institute

Thermal resistance

 

1.93 togs ‡

BS 4745

FLAMMABILITY

 

 

Flammability
Hot Metal Nut Test


Pass - Low radius of effects of ignition
*Tested in UK Laboratory

BS 4790 & BS 5287

Critical Radiant Flux

Category 1 (0.53W/cm²)

ASTM E648 / NFPA253

Reaction to Fire Classification

Bfl-s1

ENISO9239-1 & 11925-2, rated to EN13501-1

China National FR Test (at China National Test Centre)

Bf1 – s1,t1

GB/T8628-2007, GB/T11785-2005, GB/T20285-2006

Russian GOST FR Test

Classification KM3

GOST 30244-94, GOST 30402-96,
GOST 51032-97, GOST 12.1.044-89 (item 4.18),
GOST 12.1.044-89 (item 4.20)

 FR7 Catalogue

 
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