Magnesite Specialties, Inc. recently completed a 4,000-square-foot hydro-static below-grade waterproofing project at a residential property in Coronado, California.
Below-grade areas present unique waterproofing challenges, particularly when groundwater and hydrostatic pressure are involved. For this Coronado residence, our team installed a waterproofing system designed to help protect the structure from moisture intrusion and the effects of water pressure below grade.
Protecting Below-Grade Areas from Water Intrusion
Hydrostatic pressure occurs when groundwater builds up around or beneath a structure, creating pressure against below-grade concrete surfaces. Without an effective waterproofing system, moisture can potentially migrate through cracks, joints, and porous concrete.
For this project, Magnesite Specialties prepared and waterproofed approximately 4,000 square feet of below-grade surface, creating a continuous protective barrier designed for demanding below-grade conditions.
Proper surface preparation and attention to transitions, penetrations, joints, and other vulnerable areas are critical components of a successful waterproofing installation.
Why Below-Grade Waterproofing Matters
Waterproofing below-grade areas is an important step in protecting residential structures, particularly in coastal communities such as Coronado.
A professionally installed waterproofing system can help:
- Prevent water and moisture intrusion
- Protect below-grade concrete surfaces
- Address areas exposed to hydrostatic pressure
- Reduce the potential for moisture-related damage
- Protect interior living and storage areas
- Improve the long-term performance of the structure
- Provide a continuous barrier at vulnerable below-grade surfaces
Unlike coatings intended primarily for above-grade applications, below-grade waterproofing systems must be selected and installed specifically for conditions where water pressure can act against the structure.
Waterproofing a Coronado Residence
With approximately 4,000 square feet of below-grade area, this Coronado project required careful preparation and a comprehensive waterproofing approach.
The completed system provides another layer of protection between the residence and surrounding below-grade moisture conditions while helping safeguard the structure for years to come.
Residential Waterproofing Specialists in Coronado & San Diego County
Magnesite Specialties, Inc. provides professional waterproofing, concrete restoration, deck coatings, specialty flooring, and resurfacing services throughout Coronado and the greater San Diego County area.
From below-grade foundations and residential structures to balconies, decks, walkways, and other moisture-sensitive surfaces, our team has the experience to recommend waterproofing solutions based on the specific conditions of each property.
Need Below-Grade Waterproofing?
Water intrusion can become significantly more difficult and expensive to address after a structure is completed. Choosing the proper waterproofing system and experienced installation team is an important part of protecting your property.
Contact Magnesite Specialties, Inc. to learn more about hydro-static and below-grade waterproofing solutions for residential and commercial properties throughout San Diego County.
Below-Grade Waterproofing | Hydrostatic Waterproofing | Residential Waterproofing | Coronado, CA | San Diego County


