Hydro Static Grout Injection Teniques and Job Site Photos

Hydro Static Grout Injection Techniques and Job Site Photos

Make sure you call

McPherson Quality Water Proofing
Hydro Static Grout Injection Specialist
Contractors License 459028
Santa Rosa, Marin and San Francisco areas Phone/fax 707-542-8254
email mike@mcphersonpainting.com

Preparation starts with removal of failing flashing and below grade deteriorated rubber membranes.

Below grade wall showing failed membrane removed.

Other areas that present a water intrusion problem are pipes and conduit that enter the building
and are not sealed at the point of entry. These pipes were below grade.

Another common problem are large voids between tilt up wall joints that allow water to enter
freely below grade.As you can see, the wall was sealed with backrod and urethane compound
above grade but the spacebetween the tilt up wall joints was never sealed below grade. Since all
of this was covered up with dirt no one was the wiser. The building owners suffered large puddles
of water on their floors everytime it rained.

Deteriorated foam backer rod between concrete tilt up walls must also be removed and replaced.
The common practice of most waterproofing contractors is to patch and paint right over the
deteriorated joints because the do not have the experience, equipment and materials available
to remove and replace the backer rod. If there is any question as to the function ability of the
backer rod we replace it. It is a small inconvenience necessary to guarantee a watertight job.

The complete exterior, including exposed below grade walls, must be power washed.

All cracks great than 1/16 inch in walls are drilled with masonary bits at an angle that intercepts
the crack midway within the wall.The crack shown is wider than 1/16 inch due to removing and
cleaning out of waterproofing patch that was previously appllied by others in a failed attempt to
seal leaking walls.

Injection holes are drilled approximately every 16 inches and follow the contour of the crack(s).

Drilled holes are cleaned out with water and compressed air and stainless steel injection ports are
installed in every hole and torqued down to proper specifications.

All cracks must be sealed with grout in preparation for Hydro Static Grout Injection and to
prevent blow out of materials that are injected under high pressure exceeding 3000 p.s.i.

The ports are now ready for step one. High pressure injection of water.

The second step is the injection of the chemically re-active Hydrostatic Grout by a highly trained
technician. The Hydrostatic Grout is a three part catylist and is shipped in dry hydrogen. Each
component must be stored seperately. Just prior to application the components are mixed and
allowed to cook. The Hydrostatic Grout is extremely caustic and requires training, experience
and saftey equipment: Tyvec suit, saftey googles, respirator, lexon face sheild, sealed boots and
gloves. There is always the possibilty that a port may blow out so extreme caution is exercised.

The Hydrostatic Grout compound is injected immeadiately after the water is injected into the cracks.
The Hydrostatic Grout compound first chases the water completely thoughout the cracks within the
walls and then immeadiately has a chemical reaction with the water. This reaction causes the
compound to expand under enoumous pressure and to permenantly seal the wall and all cracks.
Under the enourmous pressure the Hydrostatic Grout seeps past the ports and through the
temporary patch previously applied to the cracks. All this will be cleaned once it has cured.

Close up of Hydrostatic Grout injection.

Once the injection ports and excess Hydrostatic Grout has been removed the cracks are sealed
with additional terpolymer waterproofing patches. The wall is ready for primer. You may also
notice the new gray colored urethane sealer applied to the new backer rod at the verticle joint
between the concrete tilt up walls (left side of photo)

It literally takes a truck load of waterproofing material to seal a large building.

A view of the unfinished front.

Here is the view of the south side wall after two coats of VIP terpolymer. Another job well done!

McPherson Quality Water Proofing web site pages

McPherson Quality Water Proofing Main Page
Water Proofing Techniques, Preparations and Photos

McPherson Quality Painting Main Page Painting Web Site

If you have a project in the Bay Area and would like to receive a FREE estimate, Call Mike at 707-542-8254
Fax 707-542-8254

Email: mike@mcphersonpainting.com

Website Designed by Michael McPherson

THANK YOU FOR VISITING.
McPherson Quality Painting and Water Proofing Copyright 1983-2003
All Rights Reserved.

Preparation starts with removal of failing flashing and below grade deteriorated rubber membranes. Below grade wall showing failed membrane removed. Other areas that present a water intrusion problem are pipes and conduit that enter the building and are not sealed at the point of entry. These pipes were below grade. Another common problem are large voids between tilt up wall joints that allow water to enter freely below grade.As you can see, the wall was sealed with backrod and urethane compound above grade but the spacebetween the tilt up wall joints was never sealed below grade. Since all of this was covered up with dirt no one was the wiser. The building owners suffered large puddles of water on their floors everytime it rained. Deteriorated foam backer rod between concrete tilt up walls must also be removed and replaced. The common practice of most waterproofing contractors is to patch and paint right over the deteriorated joints because the do not have the experience, equipment and materials available to remove and replace the backer rod. If there is any question as to the function ability of the backer rod we replace it. It is a small inconvenience necessary to guarantee a watertight job. The complete exterior, including exposed below grade walls, must be power washed. All cracks great than 1/16 inch in walls are drilled with masonary bits at an angle that intercepts the crack midway within the wall.The crack shown is wider than 1/16 inch due to removing and cleaning out of waterproofing patch that was previously appllied by others in a failed attempt to seal leaking walls. Injection holes are drilled approximately every 16 inches and follow the contour of the crack(s). Drilled holes are cleaned out with water and compressed air and stainless steel injection ports are installed in every hole and torqued down to proper specifications. All cracks must be sealed with grout in preparation for Hydro Static Grout Injection and to prevent blow out of materials that are injected under high pressure exceeding 3000 p.s.i. The ports are now ready for step one. High pressure injection of water. The second step is the injection of the chemically re-active Hydrostatic Grout by a highly trained technician. The Hydrostatic Grout is a three part catylist and is shipped in dry hydrogen. Each component must be stored seperately. Just prior to application the components are mixed and allowed to cook. The Hydrostatic Grout is extremely caustic and requires training, experience and saftey equipment: Tyvec suit, saftey googles, respirator, lexon face sheild, sealed boots and gloves. There is always the possibilty that a port may blow out so extreme caution is exercised. The Hydrostatic Grout compound is injected immeadiately after the water is injected into the cracks. The Hydrostatic Grout compound first chases the water completely thoughout the cracks within the walls and then immeadiately has a chemical reaction with the water. This reaction causes the compound to expand under enoumous pressure and to permenantly seal the wall and all cracks. Under the enourmous pressure the Hydrostatic Grout seeps past the ports and through the temporary patch previously applied to the cracks. All this will be cleaned once it has cured. Close up of Hydrostatic Grout injection. Once the injection ports and excess Hydrostatic Grout has been removed the cracks are sealed with additional terpolymer waterproofing patches. The wall is ready for primer. You may also notice the new gray colored urethane sealer applied to the new backer rod at the verticle joint between the concrete tilt up walls (left side of photo) It literally takes a truck load of waterproofing material to seal a large building. A view of the unfinished front. Here is the view of the south side wall after two coats of VIP terpolymer. Another job well done! McPherson Quality Water Proofing web site pages McPherson Quality Water Proofing Main Page Water Proofing Techniques, Preparations and Photos McPherson Quality Painting Main Page Painting Web Site
If you have a project in the Bay Area and would like to receive a FREE estimate, Call Mike at 707-542-8254 Fax 707-542-8254 Email: mike@mcphersonpainting.com
Website Designed by Michael McPherson
*THANK YOU FOR VISITING.* McPherson Quality Painting and Water Proofing Copyright 1983-2003 All Rights Reserved.