Knauf Hullboard
Description
Knauf Hullboard is a light-weight insulation board of 3.7 ounces
per square foot per inch thickness with one surface designed to
have either glass cloth facing applied in a fabricator’s facility
or brattice cloth applied by marine insulation applicators in the
field.
Product Data Sheet Coming Soon
Knauf Hullboard has a low thermal conductivity of 0.23
BTU•in./hr•sq.ft.•°F at a mean temperature of +75°F (+24°C). It is
designed for use as a thermal insulation for bulkheads, beams,
decks, shell plating and ducts aboard Naval, Coast Guard and
domestic ships.
Features and Benefits
Knauf Hullboard is easy to fabricate and install and can be
kerfed per the requirements of Military Specification MIL-I-742F to
fit irregular surfaces. The product resists the effects of
vibration and slumping, providing an in-place performance that
meets all required standards. The product is moisture resistant and
is not damaged by temporary exposure to fresh or salt water. The
product also will not provide sustenance to vermin, will not rot
and has no objectionable odor.
Specification Compliance
In U.S.:
- MIL-I-742F, Type II ASTM C 612Type IA (1.6, 2.25, 3.0, 4.25,
6.0 PCFType IB (3.0, 4.25, 6.0 PCF)
- MIL-I-24244C (SH)
- MIL-A-23054 (SH) – Baseboard Component
- MIL-I-22023D, Type III – Baseboard Component
- ASTM C 795
- NRC Reg. Guide 1.36
- HH-I-558B (Amendment 3)
- Form A, Class 1 & 2)
- Form B, Class 7
- MIL-I-15475 (SH)
- ASTM C 612; Type II
- ASTM C 1139; Type I, Type II Grade 6
- USCG 164.109/16/0
In Canada:
- T.C. 270.F1.324 (Canadian Coast Guard)
Technical Data
Surface Burning Characteristics (ASTM E 84)
- Does not exceed 25 Flame Spread, 50 Smoke Developed.
Combustibility (USCG 164.109)
- The product is rated as noncombustible.
Alkalinity (MIL-I-742F)
- Less than 0.6 percent equivalent Na2O, the pH does not exceed
11.7.
Water Vapor Sorption (ASTM C 1104)
Application and Specification Guidelines
Knauf Hullboard is manufactured to be used by fabricators for
facing with glass cloth for use on ships. The material can also be
applied plain or field-finished with brattice cloth in lieu of
pre-faced material for retrofit applications. The product can be
kerfed either by rotary sawblade, groove cutters or hand grooving
tools to accommodate I-beams, duct work or other special
requirements. The board can be impaled over fasteners which are
pre-welded in position between stiffeners, generally 12" (305 mm)
on center and 3" (76 mm) from the longitudinal and horizontal
joints of the insulation board. The fabricated boards can be
finished with approved tapes and caps as per specification
requirements.
Caution
Fiber glass may cause temporary skin irritation. Wear
long-sleeved, loose-fitting clothing, head covering, gloves and eye
protection when handling and applying material. Wash with soap and
warm water after handling. Wash work clothes separately and rinse
washer. A disposable mask designed for nuisance type dusts should
be used where sensitivity to dust and airborne particles may cause
irritation to the nose or throat. During initial heat-up to
operating temperatures above +350°F (+177°C), an acrid odor and
some smoke may be given off as a portion of the bonding material
used in the insulation begins to undergo a controlled
decomposition. If natural convection is not adequate in confined
areas, forced ventilation should be provided in order to protect
against any harmful fumes and vapors that might be generated.
Fiber Glass and Mold
Fiber glass insulation will not sustain mold growth. However,
mold can grow on almost any material when it becomes wet and
contaminated with organic materials. Carefully inspect any
insulation that has been exposed to water. If it shows any sign of
mold it must be discarded. If the material is wet but shows no
evidence of mold, it should be dried rapidly and thoroughly. If it
shows signs of facing degradation from wetting, it should be
replaced.
Notes
The chemical and physical properties of Knauf Hullboard
represent typical average values determined in accordance with
accepted test methods. The data is subject to normal manufacturing
variations. The data is supplied as a technical service and is
subject to change without notice. References to numerical flame
spread ratings are not intended to reflect hazards presented by
these or any other materials under actual fire conditions. Check
with your Knauf regional office to assure information is
current.
Hullboard Product information
|
Thickness |
Width |
Length |
| 1"
(25mm) |
24" (610 mm) |
38" (914 mm) |
| 1 1/2" (38mm) |
and |
and |
| 2"
(51 mm) |
48" (1219 mm) |
48" (1219 mm) |
| 3"
(89mm) |
|
|
| 4"
(102 mm) |
|
|
|
Tolerances |
| ± 1/8" (3.2 mm) |
± 1/8" (3.2 mm) |
± 3/32" (2.4 mm) |