Preparation of the Surface
Fresh foam adheres to all commonly applied mineral
building materials, including insulation materials
such as: EPS, XPS, mineral wool, etc.
Every surface must be compact, smooth, loadbearing,
dry, clean and without any film (grease,
dust, etc.) which would reduce adhesiveness.
Foam does not adhere to non-mineral surfaces
such as: silicone, polyethylene, some other plastics,
etc. Before application the surface must
be well moistened with water. Foam may be
applied in a temperature of between -10°C and
+40°C. Hardened foam is semi-rigid and forms a structure of enclosed cells. It is resistant to temperatures
of between -55°C and +100°C and to
ageing processes, except UV radiation. After
hardening, it can be cut, ground, sanded, painted
or plastered.
Implementation
Before application, the temperature of the can and
its content must be between -10°C and +40°C
(optimum application temperature: approx.:
+20°C). Shake the can vigorously 15-20 times.
Additionally, shake from time to time during application.
Screw the attached applicator gun onto the can.
Be careful not to activate the valve when screwing
the gun on, because of the risk of uncontrolled
flow of foam. Do not unscrew the gun before the
can is completely empty.
Before use, cold containers must be carefully
warmed in tepid water. Do not heat containers to
a temperature above +50°C, because of the risk
of explosion. Heated containers (e.g. left in vehicles
in summertime), must be cooled down in
water. Whilst cooling, containers may be shaken
from time to time in order to reach the required
temperature of the product more quickly.
Clean the application pipe and surfaces smudged
with foam using Dow cleaner (Great Stuff Pro –
polyurethane foam cleaner). Equal and quick
hardening of the foam requires moisture. Inappropriate
moistening or overflowing of the joint and
the openings may lead to uncontrolled expansion
of foam volume.
After opening, use the product within four weeks.
Fresh foam expands between 1.5 and 2 times, so
be careful not to fill the joint too much. Remove
any excess or fresh foam using Dow Great Stuff
Pro cleaner. Hardened foam can be removed
mechanically.
Caution
The product contains isocyanates. Avoid contact
with skin and do not inhale the gases which may cause an allergy. Do not inhale atomized liquid. It
irritates eyes, respiratory system and skin. During
work wear protective clothing and eye protectors.
The product is extremely flammable. Do not use
near fire and sources of ignition. Do not atomise
towards the direction of a flame or heated materials.
Flammable/explosive mixes of vapour with air
can be formed during application. Protect against
temperatures of more than +50°C. Pressurised
container. Do not puncture the can during or after
use.
User safety
In addition to the above recommendations, follow
good building practice and work-safety rules. The
manufacturer warrants the quality of the product
but has no influence on the manner, place and
conditions of its storage and application. Building
work should be done by professionally qualified
contractors.