PL1 ONE COAT ULTRA SMOOTH

PL1 Ultra Smooth® one coat is a seamless sound-absorbing ceiling and wall finish acoustical plaster that will enhance any interior application.

Simplicity is at the root of all good solutions, and indeed the simple and easy installation of Sonacoustic acoustical plaster is one of the greatest virtues of the product. There are 2 options;

Direct installation on a substrate such as concrete or gypsum board
Installation on a typical suspended gypsum board or similar has been mounted.

In both cases, the Sonaboard is glued to the substrate and lightly sanded smooth. Board joints are treated with a thin gauge fiberglass mesh tape. Then a one-coat layer of PL1 Sonacoustic® acoustical plaster and troweled if necessary. After drying, the plaster can be lightly sanded for an exceptional finish.

Click here to download PL1 Ultra Smooth Brochure

PL1 One Coat NRC Values 


  
    Substrate
    125
    250
    500
    1000
    2000
    4000
    NRC
    αw
  

    Sonaboard 1/2" thickness
05
23
56
85
93
97
65
50
  

    Sonaboard 3/4" thickness
15
57
87
90
88
82
80
85
  

    Sonaboard 1" thickness
16
68
90
85
86
86
80
85
  

    Sonaboard 1 1/4" thickness
25
78
81
85
82
80
80
85
  

    Sonaboard 1 1/2" thickness
25
79
99
05
06
05
95
00
  

    Sonaboard 2" thickness
30
83
14
12
11
03
05
    1
  

TECHNICAL DATA

ACOUSTICAL TEST DATA

We carried our testing at 2 recognized laboratories in the world; in Europe the Fraunhofer Institut in Stuttgart and in the famous Riverbank Acoustical Laboratories in Illinois.

FIRE TEST DATA

Sonacoustic® was tested on fire resistance, in Europe as well as in the U.S.A. Both certified laboratories rated Sonacoustic® as incombustible.

FUNGI RESISTANCE

Sonacoustic® was tested on “ Fungi resistance “ according to ASTM C 1338 by R & D in Cookeville – Tennessee – the U.S.A., result: no fungal growth appeared.

THERMAL PROPERTIES

Thermal conductivity and water vapor transmission were tested by MPVA laboratories in Neuwied – Germany.

HEALTH

No carcinogens and reproductive/developmental toxins could be detected. Classified M 1 by Eurofins laboratories in Denmark – test reports G09415A & G09415C.

LIGHT REFLECTANCE

Tested by Chemir laboratories according to ASTM E1331.
Result: a very high average light reflectance value of 94,69 for the standard white color.

All test reports are available upon request.

Substrate	125	250	500	1000	2000	4000	NRC	αw
Sonaboard 1/2" thickness	0.05	0.23	0.56	0.85	0.93	0.97	0.65	0.50
Sonaboard 3/4" thickness	0.15	0.57	0.87	0.90	0.88	0.82	0.80	0.85
Sonaboard 1" thickness	0.16	0.68	0.90	0.85	0.86	0.86	0.80	0.85
Sonaboard 1 1/4" thickness	0.25	0.78	0.81	0.85	0.82	0.80	0.80	0.85
Sonaboard 1 1/2" thickness	0.25	0.79	0.99	1.05	1.06	1.05	0.95	1.00
Sonaboard 2" thickness	0.30	0.83	1.14	1.12	1.11	1.03	1.05	1