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Seamless acoustic plaster ceiling meeting a wall with no visible joint
Acoustic plaster — technical data

Straight Up 15 mm

Seamless acoustic ceiling and wall system

Manufacturer Styjl
Country of origin Sweden
System family Acoustic plaster
Supplied and applied by Conmarble Natural Finishes

The product

The shallower Straight Up build-up, for ceilings where the void will not give up 20 mm. Same seamless, non-directional surface and the same installation method as a drywall ceiling, at up to 92% recycled content by weight.

Where it is used

  • Lobbies, atria and concourses
  • Museums and performing arts centres
  • Corporate interiors, board rooms and executive offices
  • Schools, classrooms and higher education
  • Hospitality and restaurants
  • Retail and shopping malls
  • Residential

Substrates

  • Drywall suspension grid at 300 mm centres (metric) or 16" centres (imperial)
  • Solid backing, type A mounting

Application data

Coverage, thickness, mix and cure, as declared by the manufacturer. Site conditions in the Gulf sit at the top of most of these ranges — allow for it in the programme.

Board size 600 × 1,200 mm (32 × 48"), 0.72 m² coverage
Straight Up 1 plaster 3.8 kg (8 lb), covers 10 m² (108 sqft)
Straight Up 2 plaster 3.8 kg (8 lb), covers 30 m² (320 sqft)
Scrim 1.1 × 100 m roll, 100 m² (1,076 sqft) per roll
Colorant One box per 50 m² (538 sqft) of system
Grid Drywall suspension grid at 300 mm o.c. (metric) or 16" o.c. (imperial)
Colours Standard equal to RAL 9001. Standard+ gives seven predefined RAL colours plus concrete, marble, stone and metallic options. Special covers any RAL or NCS colour.
Textures Standard, Standard+ and Special
Shelf life 3 years for boards, plasters and scrim; 1 year for colorant

Performance data

Every figure below is reproduced from the manufacturer's own technical data sheet, with the test standard it was measured against. The sheet itself is in the download section.

Property Result Standard
Sound absorption, type E200 mounting NRC 0.65 ASTM C423
Sound absorption, type E400 mounting NRC 0.55 ASTM C423
Sound absorption with high-NRC backer, type A NRC 0.85 ASTM C423
Sound absorption with high-NRC backer, type E200 NRC 0.85 ASTM C423
Sound absorption with high-NRC backer, type E400 NRC 0.80 ASTM C423
Ceiling attenuation class CAC 51 ASTM E1414
Reaction to fire Class A ASTM E84
Light reflectance Up to 93 ASTM 1477
Volatile organic compounds CDPH v1.2 compliant CDPH/EHLB Standard Method v1.2-2017
Recycled content Up to 92% by weight Straight Up 15 mm data sheet

Where not to use it

The limits are as much a part of the specification as the performance. Everything here is stated on the manufacturer's data sheet.

  • An interior ceiling and wall system.
  • Without the high-NRC backer board there is no published type A absorption figure — specify the backer where type A mounting is required.
  • Absorption is materially lower than the 20 mm system unless the high-NRC backer is used.
  • Colorant has a one year shelf life; the boards, plasters and scrim have three.
Specification clause

Seamless acoustic ceiling: Styjl Straight Up 15 mm (5/8") seamless acoustical ceiling and wall system on a drywall suspension grid at 300 mm centres, comprising the acoustical board, Straight Up 1 and Straight Up 2 plasters, scrim and acoustical coating in colour [ref], with high-NRC backer board where type A mounting is required, finished [Standard / Standard+ / Special] to the approved sample panel. Ceiling attenuation class CAC 51 to ASTM E1414. Reaction to fire Class A to ASTM E84. Supply and application by Conmarble Natural Finishes as exclusive Middle East dealer for Styjl.

Square brackets mark the choices that belong to the project. Send us the finishes schedule and we will return the clause completed, with the sample and mock-up programme against it.

Documents

Every document is the manufacturer's own, reproduced in full and unaltered under our cover. Free to download, no form.

The rest of the acoustic plaster range

Fellert Even Better Silk Seamless acoustic plaster Fellert Even Better Sahara Seamless acoustic plaster Fellert Even Better Secern Seamless acoustic plaster Fellert Even Better Concrete Seamless acoustic plaster Fellert Even Better New England Seamless acoustic plaster Fellert Even Better Silk Metallic Seamless acoustic plaster Fellert Even Better Marble Seamless acoustic plaster Fellert Even Better Stone Seamless acoustic plaster Fellert Even Better 1 Acoustic plaster Fellert Even Better 2 Acoustic plaster Fellert Even Better Acoustical Coating Acoustic coating Straight Up 20 mm Seamless acoustic ceiling and wall system

Technical support for the design team

We supply the material and we apply it, so the specification and the workmanship sit with one party. Send a finishes schedule, an elevation or a mood board and we will come back with the system, the build-up, the sample programme and a completed clause.

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