Vertical Stack Pipe Rejuvenation - Aquazen Services Ltd

Aquastack™ Non-Invasive Pipe Renewal for High-Rise Drain Stacks

A modern, cost-effective solution to aging sanitary piping systems

THE PROBLEM

Aging Drain Stacks Are Failing Inside High-Rise Buildings

Most buildings built before the 1990s are now experiencing significant internal deterioration of their cast-iron sanitary stacks.

Corrosion & Metal Loss

Restricted flow due to heavy scale, internal buildup, and corrosion.

Leaks & Flooding

Pitting and pinhole leaks that lead to water damage and flooding.

Backups & High Costs

Backups and recurring service calls that increase maintenance costs.

Sewage Odors & Contamination

Sewage odors, contamination risks, and tenant complaints.

Insurance & Liability Risk

High insurance claims from water damage between floors.

Unpredictable Failures

Unpredictable failures that create emergency situations.

LOWER YOUR PIPE RESTORATION COSTS BY 40–50%

Using Non-Invasive Pipe Renewal avoids the high labour, demolition, and reconstruction expenses of full replacement—saving 40–50%.

THE SOLUTION

Structural Internal Coating The Perfect Fit for Vertical Drain Stacks

Vertical sanitary stacks run inside the building envelope, which means:

They are protected from soil loads

They are not exposed to freeze-thaw cycles

Their outer walls remain structurally intact for decades

The real deterioration occurs inside the pipe, where:

Corrosion, buildup, and scaling reduce flow

Pits and cracks form

Backups and leaks begin

Because the problem is internal—not external—the ideal solution is an internal structural coating that:

They are protected from soil loads

Restores smooth flow

Seals corrosion pits

Creates a bonded, seamless, ultra-durable lining

Extends the lifespan without touching the surrounding finishes

A full replacement is unnecessary. A pipe-within-a-pipe is unnecessary.

WHAT YOU NEED IS A RENEWED INTERNAL PIPE SURFACE.

Case Studies & Proven Savings

Southgate Condominiums

21 vertical drain stacks
Replacement: $882,000
Non-invasive renewal: $672,000
Savings: $210,000
Completed with zero tenant displacement

The Maddox – Cabbagetown

32 vertical drain stacks
Replacement: $1,856,000
Non-invasive renewal: $1,200,000
Savings: $656,000
Avoided major demolition and finish restoration

BanQ (Montreal National Library)

Problem: Water infiltration due to an old cast iron cracked pipe
Solution: Used polyurea coating to renew all infiltrated cast iron drain pipes without the need to excavation.

Commercial Center Alexis-Nihon

Problem: Water infiltration and cracking cast iron horizontal drains.
Solution: Descaled and rejuvenated pipe interior to eliminate all scaling, cracking and improve flow.

Loto-Quebec

Problem: Water leaking due to old cast iron pipes.
Solution: Descaled and rejuvenated pipe interior to eliminate all scaling, cracking and improve flow through the vertical stacks of this high rise building.

Bank of New York

Problem: Water infiltration causing leaking and flooding in multiple floors.
Solution:Isolated piping system and rejuvenated the interior of the vertical stack systems to a better than new finish. All done with a non-invasive process!