Professional Waterproofers

Call : +974 44772326 +974 70009311
AL FALAH CENTER - Gate B 1st Floor - Office #25 in front of Mercedes Agency Salwa Road - Doha , Qatar
Tel : +974 4477 2326 Fax: +974 4477 2326 P.O.Box: 7643 Doha , Qatar
Email: info@powerproofqatar.com web : www.powerproofqatar.com
Construction of high-pressure Injection Waterproofing System
Construction Prepares
a. Find crack: For wet surface, first clean water; for dry
surface, clean dust. Carefully looking for cracks, using
colored pens or chalk mark along the cracks.
b. Drilling: According to the thickness of concrete
structures, from the crack of about 150 ~ 350mm,
cross-drilled on both sides along the crack direction.
14mm diameter drill bit used. Holes and cracks in
cross-section should be 45 degrees to 70 degrees
cross, and the central cross in the bo1om 1 / 2 range.
c. Bury injection packers: buried with tools and fastening to ensure that the rubber part of the
needle and the hole wall are dry before use, otherwise easily lead to slip when tightening.
Construction Notes
a. First, analysis cracks’ width and length, take cores to determine the development of crack
depth.
b. If the surface is not easy dry, you can use torch drying, cracks due to moisture, can be found
immediately to improve efficiency.
Crack Repair
a. Injection should be started in elevation from bottom to top, when
the foam material emerge from the cracks should immediately
stop, and start again after a while. In the infusion process, if the
material adjacent to the needle position has been filled, you can
jump without injection. If found cracks extension in both ends or
cracks with cross, should drill holes again, re-grouting
b. To fill cracks with polyurethane, should grout again before the material become solid.

Call : +974 44772326 +974 70009311
AL FALAH CENTER - Gate B 1st Floor - Office #25 in front of Mercedes Agency Salwa Road - Doha , Qatar
Tel : +974 4477 2326 Fax: +974 4477 2326 P.O.Box: 7643 Doha , Qatar
Email: info@powerproofqatar.com web : www.powerproofqatar.com
Construction of high-pressure Injection Waterproofing System
Construction Prepares
a. Find crack: For wet surface, first clean water; for dry
surface, clean dust. Carefully looking for cracks, using
colored pens or chalk mark along the cracks.
b. Drilling: According to the thickness of concrete
structures, from the crack of about 150 ~ 350mm,
cross-drilled on both sides along the crack direction.
14mm diameter drill bit used. Holes and cracks in
cross-section should be 45 degrees to 70 degrees
cross, and the central cross in the bo1om 1 / 2 range.
c. Bury injection packers: buried with tools and fastening to ensure that the rubber part of the
needle and the hole wall are dry before use, otherwise easily lead to slip when tightening.
Construction Notes
a. First, analysis cracks’ width and length, take cores to determine the development of crack
depth.
b. If the surface is not easy dry, you can use torch drying, cracks due to moisture, can be found
immediately to improve efficiency.
Crack Repair
a. Injection should be started in elevation from bottom to top, when
the foam material emerge from the cracks should immediately
stop, and start again after a while. In the infusion process, if the
material adjacent to the needle position has been filled, you can
jump without injection. If found cracks extension in both ends or
cracks with cross, should drill holes again, re-grouting
b. To fill cracks with polyurethane, should grout again before the material become solid.

Call : +974 44772326 +974 70009311
AL FALAH CENTER - Gate B 1st Floor - Office #25 in front of Mercedes Agency Salwa Road - Doha , Qatar
Tel : +974 4477 2326 Fax: +974 4477 2326 P.O.Box: 7643 Doha , Qatar
Email: info@powerproofqatar.com web : www.powerproofqatar.com
Construction of high-pressure Injection Waterproofing System
Construction Prepares
a. Find crack: For wet surface, first clean water; for dry
surface, clean dust. Carefully looking for cracks, using
colored pens or chalk mark along the cracks.
b. Drilling: According to the thickness of concrete
structures, from the crack of about 150 ~ 350mm,
cross-drilled on both sides along the crack direction.
14mm diameter drill bit used. Holes and cracks in
cross-section should be 45 degrees to 70 degrees
cross, and the central cross in the bo1om 1 / 2 range.
c. Bury injection packers: buried with tools and fastening to ensure that the rubber part of the
needle and the hole wall are dry before use, otherwise easily lead to slip when tightening.
Construction Notes
a. First, analysis cracks’ width and length, take cores to determine the development of crack
depth.
b. If the surface is not easy dry, you can use torch drying, cracks due to moisture, can be found
immediately to improve efficiency.
Crack Repair
a. Injection should be started in elevation from bottom to top, when
the foam material emerge from the cracks should immediately
stop, and start again after a while. In the infusion process, if the
material adjacent to the needle position has been filled, you can
jump without injection. If found cracks extension in both ends or
cracks with cross, should drill holes again, re-grouting
b. To fill cracks with polyurethane, should grout again before the material become solid.