Product Information
CavaStop 300
is a chemically balanced capillary barrier compound made
up of impregnating agents, synthetic resins and synthetic
oils. It forms a long-lasting, permanently elastic
capillary water barrier which is practically inert to all
forms of environmental attack. Unlike silicification
compounds,
CavaStop
300 does not become brittle on solidification and crack
as a result of earth tremors or other vibration of the
structure.
CavaStop 300 capillary
barrier compound has excellent resistance to UV radiation
and below-freezing temperatures and is unaffected by
acids and alkalines.
CavaStop 300 provides
excellent elasticity and long-term durability. Like all
water repellent compounds,
CavaStop 300 is suitable
for waterproofing pores and capillary passages, but
cannot be used to seal against pressing water.
Application fields
Basement and
foundation walls.
Can be used with all mineral construction materials
including sand lime brick, brick, sandstone, concrete,
aerated concrete, quarrystone, etc.
Application method
Remove old,
loose plaster containing saline deposits, etc. to 50 cm
above the visible moisture level. This can be done either
before or after application of the capillary barrier.
Make the boreholes as specified in the processing
instructions for the type of structure treated. Remove
any dust and foreign material in the boreholes and insert
a CavaStop 300 cartridge into each borehole. After the
cartridges are completely empty, remove them and seal the
boreholes using cement mortar or other appropriate
material.
Processing
The boreholes for the
CavaStop 300 cartridges are normally made at a height
approx. 10–15 cm above floor level when bored from
the inside. If bored from the outside, they are located
approx. 10–15 cm above ground level or immediately
below the ground floor. The spacing between the boreholes
depends on the thickness and construction of the wall and
the material quantity used.
The
borehole locations are determined using the borehole
table and the borehole location diagramme. The boreholes
should be angled downward at 40°. They should have
adiameter of 16 mm and should extend to within approx. 5
cm of the other wall surface. CavaStop 300 is introduced
into the boreholes by simply inserting the opened
cartridges. Ensure sufficient ventilation during the
application process and for some time afterwards.
Reaction of the CavaStop 300 components within the
structure takes place within a period of 4–10 weeks
after application. Moisture in the wall above the new
horizontal barrier dries out after treatment; for
instance in a 36 cm thick wall, drying out is normally
complete after 18–24 months.
Buildings with
basement
Renovation
treatment: Apply CavaStop 300 from the outside of the
structure at a level below the ground floor and above
ground level. No excavation is required. Then apply
surface waterproofing coat and dehydration plaster.