Below-Grade
Ultimate Protection for Underground Structures
Expert Below-Grade Waterproofing Solutions to Safeguard Your Foundation, Basement, and Retaining Walls from Water Damage and Moisture Intrusion.

Why Choose Our Services
Proven expertise, top-tier materials, and customized solutions ensure your below-grade structures remain dry, durable, and protected for years to come.
Expertise in Below-Grade Protection
With years of experience, we specialize in advanced waterproofing solutions that effectively protect underground structures from water infiltration and long-term damage.
High-Quality Waterproofing Materials
We use premium-grade membranes, sealants, and drainage systems designed to withstand hydrostatic pressure and harsh environmental conditions.
Customized Solutions for Every Project
Our waterproofing strategies are tailored to meet the unique needs of each project, ensuring maximum efficiency and long-lasting protection.
Preventing Costly Structural Damage
By proactively waterproofing below-grade structures, we help prevent foundation cracks, mold growth, and costly future repairs, saving you money in the long run.
Industry-Leading Installation Techniques
Our skilled team employs cutting-edge installation methods to ensure seamless application and superior performance of waterproofing systems.
Reliable and Long-Lasting Performance
Our waterproofing solutions are built to last, providing peace of mind with durable protection against groundwater, moisture, and environmental factors.
Our Proven Process
A streamlined approach to delivering reliable, long-lasting waterproofing solutions for your underground structures.
Key Aspects in Our Process:
Comprehensive Site Assessment
We evaluate soil conditions, water table levels, and structural vulnerabilities to determine the best waterproofing strategy.
Customized Waterproofing Plan
Our team develops a tailored waterproofing solution using industry-leading materials and techniques to meet your project's specific needs.
Surface Preparation & Installation
We ensure proper foundation preparation before applying waterproofing systems, guaranteeing seamless adhesion and long-lasting protection.
Quality Control & Testing
Rigorous water intrusion tests and inspections are performed to verify the effectiveness of the waterproofing system before project completion.
Final Inspection & Long-Term Assurance
We conduct a thorough final inspection and provide maintenance recommendations to ensure continued protection for years to come.
Reach out to us
Have questions? Feel free to contact us using the form below. We're here to help!
Email us
contact@spldecks.com
Call us
+1 (714) 791-5327
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