LRB Mattresses

Rock wool lightly resin bonded mattresses (LRB) consists of fine fibers spun from selected rocks melted at high temperature and bonded with a thermosetting resin. They are Machine laid fiber lay pattern and are baked to form mattresses of predetermined density and thickness.
Mattresses are then slit and stitched to specified dimensions . It has controlled thickness and density resulting in predictable heat losses. Dhanbad Rockwool mattresses manufactured from selected rocks to State of the Art Specification fully conform to national and international standards such as IS : 8183 - 1993 BS : 3958 Part - 3 ASTM:C592 - 80



LRB mattresses are used for Hot & Cold insulation to conserve energy. It is used in the thermal insulation of large vessels, boilers, equipment, ducts, flanges, valves and plants operating at high temperatures.



upto 750° Centigrade


Standard Dimensions : 1.640 X 1.220 M & 1.520 X 1.220 M
Thickness (mm) : 25, 40, 50, 60, 65, 75,100
Density (Kg/M3) : 85 to 150




Mattress has extremely low K values for wide range of temperature. Typical thermal conductivity values for various densities and mean temperature are shown in the graph.



DRW LRB Mattresses are available with wired mesh on one or both sides in SS or GI.



Non-hygroscopic, non-capillary and does not absorb any moisture from the air. Moisture has no effect on the stability of the mattresses.




DRW LRB MATTS mattresses are packed in HDPE bags.



Mattresses do not cause, initiate or promote any kind of corrosion.


Mattresses are very flexible. They will essentially retain thickness while conforming to any irregular shape. Retention of fibers by wire mesh prevents cracking or breaking of mattresses.



Incombustible   Good acoustic properties
Moisture resistant
  Fire retardant
Neither cause nor acelerate corrosion   Chemically inert
Durable and do not sag and settle   Easy to handle and apply
Better Insulation properties  


Feel free to connect us :-

Dhanbad Rockwool Insulation Pvt. Ltd.
Sunrise Complex,
Katras Road, Matkuria, Dhanbad-826001
Jharkhand - IN
Contact Nos.: 9934319250, 7033074870
Email :