ROCKWOOL FLATROOF PLUS INSULATION SYSTEM
TECHNICAL SPECIFICATION
1.
Material Specification
Insulation
1.1
The roof insulation board shall be ROCKWOOL Hardrock 80 roofing
board to provide superior resistance to compression and point load.
It consists of long fine stone wool fibres spun from molten natural
rock bonded with thermosetting resin.
1.2
The roof insulation shall be non-combustible with superior thermal
resistance and sound absorption properties.
1.3
The roof insulation boards shall not exert any undesirable stress to
the roofing membrane. Therefore, it shall be dimensionally stable
and do not shrink more than 1% upon exposure of heat up to 250 oC
in accordance to ASTM C356-03.
1.4
The roof insulation boards shall have melting point of at least
1000oC in accordance to DIN 4102-17.
1.5
The insulation shall bear the approval mark by FM Approvals,
Factory Mutual, under Class 1 insulated steel deck roof
constructions, Class Number 4450.
1.6
The insulation system shall have no CFCs, HCFs or HCFCs used in
the manufacture of the product.
1.7
The characteristic of the insulation shall be as follows.
Technical Specification
Properties
Thermal conductivity
Fire performance
Performance
0.038W/mK
Non-combustible, A1
Test Method
ASTM C518
EN 13501-1
Compression at 10%
Deformation
Point load
Delamination strength
Flexural strength
≥80 kPa
EN826
≥700N
≥7.5 kPa
≥500N
EN 12430
EN1607
ASTM C203
Moisture absorption
Water resistance
≤1% Vol
≤0.5kg/m2
(Short-term immersion)
ASTM C1104/ C1104M
EN1609:97
2.
Installation/ Workmanship
2.1.
2.2.
2.3.
2.4.
2.5.
2.6.
2.7.
The roofing boards are to be stored and laid strictly in accordance
with the ROCKWOOL storage and installation guidelines.
Roofing boards must be protected from the exposure of rain, water
immersion and chemical contamination at all times during storage
and installation.
Installations of the roofing boards are to be staggered, butt jointed,
and mechanically fastened onto the roof deck. Using of insulation
off-cuts as gaps infill between roof boards must be avoided.
Install only as much insulation as can be covered with roofing
membrane and completed before the end of the day’s work or
before the onset of inclement weather. Large areas of boards
without any membrane covering should be avoided.
Adequate temporary protection must be provided above the
installed roofing boards where any of the following occur: unloading
or access points, temporary walkways, stockpiles of roofing
materials, waste skips or any other activity that might cause
damage to the insulation.
Under no circumstances may the finished roof be used as a working
platform without adequate protection being provided. It is
recommended that either the main contractor or the roofing
contractor operate a 'permit to work' system for any follow-on trades
in areas where the roof installation is complete.
Unless the existing roof finish is known to be sound and watertight,
and the type and condition of the surface suitable for mechanical
fixing of Hardrock Roofing Board, all previously applied finishes
and, if necessary, insulation layers should first of all be removed. It
is recommended that the specifier/contractor checks existing levels
to ensure that the falls are correct.