Underlay

Durafit 650

  • Suitable for heavy contract areas (airports, gyms, hotel ballrooms, etc)
  • Ideal for wheeled traffic areas
  • Minimises carpet rucking
  • Minimises furniture indentation marks
  • Over 2 million sq m laid on the Durafit system

durafit THE DURAFIT SYSTEM

The Durafit underlay system is one of the most important elements in contract carpeting installation. Since 1985, Duralay, the leading manufacturer of contract underlay, has evolved an outstanding contract carpet installation system, which has been used successfully in every type of installation from domestic to major contract areas, in excess of 2 million square metres

The Durafit System of carpet and underlay installation totally overcomes the potential problems associated with traditional installation methods. The many major benefits of the Durafit System include:

. Complete recovery from heavy furniture indentation . Prevents bursting and lifting of seams
. Provides total dimensional stability . Withstands heavy wheeled traffic, like trolleys
. Eliminates carpet rucking . Avoids the need for restretching
. Provides excellent underfoot comfort . Provides excellent heat and sound insulation
. Provides excellent carpet wear protection . Is already proven in large installations
. Gives clean and easy release of carpet from floor . Permits perfect and high quality border work
. Carpet is usable again after uplifting . Perm its perfect mitres / inlays
Easy and quick to install . Provides total design flexibility
. Prolongs carpet appearance retention . Delivers totally trouble-free installations

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

SPECIFICATION

BS REQUIREMENTS

RESULT

METHOD

WEIGHT

 

2700 g/m² (80 oz/yd²)

  

THICKNESS

 

6.50 mm

BS 4051

ROLL SIZE

 

1.37m x 11m

B

ROLL WEIGHT

 

40.77 kg (90 lbs)

 

MEAN ORIGINAL THICKNESS FROM NOMINAL THICKNESS

Maximum 12%

4%

BS 4051

DIFFERENCE BETWEEN MAX./ MIN. ORIGINAL THICKNESSES

Maximum 3mm

0.5 mm

BS 4051

BREAKING STRENGTH
Warp
Weft

Minimum 40N

 
744 N
325 N

BS 2576

EXTENSION UNDER FORCE
Warp
Weft

Maximum 10% @ 40N

 
2.1%
0.9%

BS 2576

WORK OF COMPRESSION

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

107 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

100%

BS 4098
& BS 4052

LOSS IN THICKNESS AFTER DYNAMIC LOADING

Max. 15% after 1000 impacts

4.07%

BS 4052

LOSS IN THICKNESS AFTER STATIC LOADING

Max. 15% after 24 hrs recovery

2.1%

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

BS 5808

Thermal resistance

 

1.10togs

BS 4745

Impact sound reduction (Delta Lw)

 

29 dB

SEN ISO 140-8: 1998 and BSEN ISO 717-2: 1997

Emissions (US Carpet & Rug Institute)

Meets low VOC emission criteria

FLAMMABILITY

 

 

 

Hot metal nut test (tested in Interfloor laboratory)

Low radius of effects of ignition

BS 4790 & BS 5287

German radiant panel (tested as a carpet/underlay composite)

Material complied with B1 classification

DIN 4102 pt 14

Kleinbrenner (tested as a carpet/underlay composite)

Material complied with B2 classification

DIN 4102 pt 14

Critical radiant flux

Cat. 1: Institutional buildings

ASTM E648 / NFPA253

Russian GOST FR Test

Classification KM5

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)

ELECTRICAL RIESTIVITY

 

 

Vertical resistance, 25% RH 0.42 x 10^10 ohms 

 

BS 6654

Vertical resistance, 65% RH 0.41 x 10^8 ohms 

 

 

Horizontal resistance, 25% RH 1.05 x 10^11 ohms 

 

 

Horizontal resistance, 65% RH 1.90 x 10^8 ohms 

 

 

Vertical resistivity, 25% RH 2.11 x 10^12 ohms/cm²

 

BS 6654

Vertical resistivity, 65% RH 2.03 x 10^9 ohms/cm²

 

 

Horizontal resistivity, 25% RH 0.97 x 10^12 ohms/cm²

 

 

Horizontal resistivity, 65% RH 1.73 x 10^9 ohms/cm²

 

 

 Durafit-650 Catalogue

 

 
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