---
title: Polyurethane Solutions for Sealing Leaks
description: Water is RELENTLESS. Leaks appear in all kinds of structures, from underground parking garages to municipal treatment tanks to elevator shafts.
---

[Alchatek Infrastructure Repair Blog: Polyurethane Leak Seal Injection, Soil Stabilization, Concrete Leveling ](https://info.alchatek.com/blog)

# [Polyurethane Solutions for Sealing Leaks](https://info.alchatek.com/blog/polyurethane-solutions-for-sealing-leaks)

 Written by [Charlie "The Grout Geek" Lerman](https://info.alchatek.com/blog/author/charlie-lerman) | Jul 27, 2021 2:00:00 PM

## Sealing Leaks in Concrete with Polyurethane

Water is RELENTLESS. Leaks appear in all kinds of structures, from underground parking garages to municipal treatment tanks to elevator shafts. Everything from fine hairline crack leaks to gushers can threaten the long-term integrity of the structure and surrounding property. Fortunately, pressure injection of polyurethane grout into the crack or behind the leaking wall (depending on the application) creates a durable and rugged positive side repair. A relentless solution to a relentless problem.

A wide variety of leak seal solutions are available to address almost any type of concrete leak. (Call the Alchemy-Spetec technical support team at 404-618-0436 for assistance in choosing a product for your specific project.)

## Polyurethane Leak Seal Solutions - Crack and Joint Injection

[Crack and joint injection](https://info.alchatek.com/blog/crack-injection-explained) products are generally used for smaller non-gushing leaks:

[Spetc PUR GT380](https://alchemy-spetec.com/leak-seal/polyurethane-leak-seal-injection/gt380-polyurethane-gel-injection-resin/)  
Activates as Foam or Gel Depending on Amount of Water Added  
*Ideal for Manhole Rehabilitation*

[Spetec PUR GT500](https://alchemy-spetec.com/leak-seal/polyurethane-leak-seal-injection/polyurethane-injection-resin-spetec-pur-gt500/)  
Most Dry-Cycle Resistant Hydrophilic Grout  
*Ideal for Cracks with Intermittent Leaking*

[Spetec PUR GT350](https://alchemy-spetec.com/leak-seal/polyurethane-leak-seal-injection/gt350-polyurethane-injection-resin/)  
MDI Based Grout   
*For Wet Dynamic Cracks & Joints*

[Spetec PUR F400](https://alchemy-spetec.com/leak-seal/polyurethane-leak-seal-injection/f400-polyurethane-injection-resin/)  
Flexible Hydrophobic Grout  
*Ideal for Dynamic Cracks & Joints*

[Spetec AG200](https://alchemy-spetec.com/leak-seal/polyurethane-leak-seal-injection/ag-200-acrylate-injection-resin/)  
Acrylic Injection Resin  
*Used in Special Situations (Contact Alchemy-Spetec Support for More Info)*

## Polyurethane Leak Seal Solutions - Curtain Grouting

[Curtain grouting](https://info.alchatek.com/blog/curtain-wall-grouting-explained) products are generally used for gushing leaks or multiple smaller leaks in proximity:

[Spetec PUR H100](https://alchemy-spetec.com/leak-seal/polyurethane-leak-seal-injection/h100-shut-down-gushing-leaks/)   
Semi-Flexible  
*Ideal for Structures with Some Movement*

[Spetec PUR H200](https://alchemy-spetec.com/leak-seal/polyurethane-leak-seal-injection/spetec-pur-h200-shut-down-gushing-leaks/)   
2,050 psi Compressive Strength, Fastest Cure Time­­   
*Ideal for Soil Stabilization*

[Spetec PUR Highfoamer](https://alchemy-spetec.com/leak-seal/polyurethane-leak-seal-injection/spetec-pur-highfoamer-shut-down-gushing-leaks/)   
50x Expansion  
*Cost Effective for Large Voids*

[Spetec Boom! Seal](https://alchemy-spetec.com/leak-seal/polyurethane-leak-seal-injection/spetec-boom-seal-two-component-highly-expansive-polyurethane-for-leak-seal/)  
Two-Component, High Expansion (35x), Hydro Insensitive  
*Used in Special Situations (Contact Alchemy-Spetec Support for More Info)*

### Want more information on polyurethane leak seal solutions?

  

[View full post](https://info.alchatek.com/blog/polyurethane-solutions-for-sealing-leaks)

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