4 - Covering >> Using Arma-Chek D Covering
APPLICATION MANUAL
D
© ARMACELL UK LTD.
Covering Of Insulated Objects >> Using Arma-Chek D Covering
2. When the covering has been smoothed in position,
mark the overlaps position on the under face area
with a pen and continue to apply adhesive on the
overlap and the under-laying covering, allow to touch
dry, ”use fi ngernail test“ and fi x down making sure the
overlap is completely fi xed.
3. Seal the longitudinal seam of the covering with the
correct Armafl ex adhesive. Continue to install the
covering along the pipework allowing for a minimum
50 mm overlap on all ”butt“ joints.
Note:
a. For outdoor application check the adhesive seams
and joints on the covering for any defects and rectify
as required. Apply a bead of Arma-Chek mastic along
all seams and joints. Always smooth in the mastic on
all the seams and joints to allow maximum bonding to
occur.
b. Allow for ”watershed“ where applicable on all external
locations.
c. Allow 36 hours curing time before turning on the
equipment.
Procedures for pipework with outer diameter (in-
cluding insulation thickness) ≥ 500 mm
Same application as for outer diameter < 500 mm, but:
All over adhesive coverage is required. Consider also
„General procedures“, topic 3 (see this page).
Note: Check adhesive specifi cation table when installing
Arma-Chek D covering (see page 21 of this manual).
GENERAL PROCEDURES
1. Ensure the Armafl ex insulation surface is clean, dry,
and free from all oils, greases and other contami-
nants, with all the seams and joints secured with
Armafl ex adhesive. Ensure that Armafl ex installa-
tion procedures are followed; ensure there are no
gaps present in all the seams and joints.
Note:
Refer to the Armafl ex Installation Manual at all
times.
2. For Arma-Chek D covering adhesive is only required
on the Armafl ex and on the overlapping area. A short
pile sheepskin paint roller may be preferred on large
circular and fl at surface areas.
3. It is recommended to fully adhere Arma-Chek D
covering for cylindrical bodies with pipe outer dia-
meter > 500 mm.
Note:
When Arma-Chek D covering is applied onto a
HT/Armafl ex substrate, all-over adhesive coverage
is not required on the HT/Armafl ex or the covering
surfaces. Only the covering seam and join overlaps
require adhesive (even if pipe/duct has an outer
diameter greater than 500 mm).
4. If all-over adhesive is applied for the overlapping
regions of the Arma-Chek D covering material it is
not necessary to use self-adhesive tape(for internal
application) or the 100 mm width Arma- Chek D strips
(for external application) if the covering is fully glued
on the surface.
CYLINDRICAL BODIES
(pipes, vessels, ductwork etc.)
Determine the circumference measurement of the insu-
lated pipeline with an additional allowance of 50 mm for
the overlap.
Proceed to cut the amount of pieces required, on a clean
fl at surface.
Procedures for pipework with outer diameter (in-
cluding insulation thickness) < 500 mm
1. Positioning of the covering material: Apply a minimum
50 mm glue line with the correct type of Armafl ex
adhesive to the surface of the Armafl ex and the Arma-
Chek D covering.
Position the Arma-Chek D covering along this line
and fi x to the Armafl ex. Ensure the covering is ”in-line“
and in the desired position. Apply pressure and
smooth the covering around the insultions circumfer-
ence avoiding any ”air pockets“. Use a clean paint
roller for this job. (Overlapping of Arma-Chek D
covering material: minimum 50 mm).
D (15)
