Commercial roofs have to accommodate much more than rooftop HVAC equipment. Refrigerant lines, plumbing pipes, electrical conduit and other building systems often need to pass directly through the roof to reach equipment or systems inside the building. Every one of those penetrations creates a potential path for water if it isn’t properly sealed.
Unfortunately, the solution in the field is sometimes little more than filling the space around a pipe with caulk, sealant or another improvised material. It might look watertight when the work is completed, but a commercial roof is constantly exposed to temperature changes, weather and movement. A makeshift seal that works today probably won’t continue to perform over the life of the roof.
Pipe penetration products provide a more reliable solution. These products are specifically designed to create a durable, watertight method for bringing piping and conduit through the roof, while protecting the building below.
Why Roof Penetrations Need More Than Caulk
Sealing around a pipe might seem straightforward, but the problem is that roofs don’t remain completely stationary. Building materials expand and contract as temperatures change. Pipes themselves can also experience movement, and rooftop components are exposed to sunlight, rain, snow, ice and other environmental conditions. Over time, that movement and exposure can compromise a field-applied seal that wasn’t designed to accommodate it.
Once the seal separates, cracks or deteriorates, water has an opportunity to enter the roofing system. This is one reason Pate designs products specifically for roof penetrations rather than relying on sealant alone. A purpose-built system accounts for the fact that the penetration must remain protected throughout changing conditions over many years.
A Small Opening Can Create an Expensive Problem
Water entering around a poorly sealed pipe can work its way into insulation, roofing materials and the building interior before the source of the problem is obvious. By the time occupants notice a stain or dripping water, moisture may already have affected materials that aren’t visible from inside the building. The repair can then involve considerably more than resealing the original penetration.
Depending on where the water travels, building owners could be dealing with damaged insulation, ceilings, walls, equipment or interior finishes – not to mention the serious and long-term risk of mold growth. Water intrusion can also interrupt normal building operations while the source is located and repairs are completed.
For contractors, there is another concern: responsibility for the penetration. When a contractor runs piping or conduit through a roof, properly sealing that opening becomes an important part of completing the installation correctly. A leak that develops around the penetration can mean callbacks, additional labor and difficult conversations about who is responsible for the resulting damage.
What Is a Pipe Penetration Product?
A pipe penetration product is a manufactured assembly designed to provide a permanent seal where piping or conduit passes through a roof. Different projects require different solutions, which is why we offer several types of penetration products rather than a single universal design. We can also custom design and build a solution to meet a unique need in the field.
The appropriate product depends on factors such as the number of pipes, their sizes, the direction they need to travel and the configuration of the roof. Our products can accommodate piping associated with mechanical and HVAC systems, plumbing installations and electrical work. Our plumbing rooftop products, for example, include solutions for creating watertight penetrations, as well as supporting piping once it is above the roof.
Pipe Cap Packages
One of the most versatile options is Pate’s Pipe Cap Package (PCC). These all-in-one units include a thermoplastic cover, watertight boots and adjustable stainless-steel clamps. The boots are graduated for standard pipe sizes, allowing the installer to cut them to the required diameter and create a secure fit around each pipe.
Different configurations can accommodate individual pipes, as well as groups of pipes with varying diameters. Multiple units can also be used when a project requires a larger number of penetrations. Because the components are designed to work together as a system, contractors aren’t left trying to assemble an improvised combination of flashing materials and sealants at the jobsite.
Pipe Hoods and Pipe Portals
Some applications require piping to exit horizontally rather than vertically. Pate’s Pipe Hoods provide an option for those installations. These aluminum assemblies feature an insulated adapter, removable top cover and faceplate. The faceplate can be field cut as needed or provided with a collar to accommodate boots, giving contractors flexibility based on the piping arrangement.
Pate also manufactures pipe portals and seals for straightforward roof penetration applications. Pipe portals use a spun aluminum base and are available in multiple sizes to accommodate different boot packages.
Choosing between these options depends on the layout of the piping and how it needs to transition through the roof. The important distinction is that the penetration is being handled with a product engineered for that specific purpose.
Solutions for Multiple or Custom Pipe Penetrations
Projects involving numerous pipes can benefit from a Multiple Pipe Curb Assembly (MPCA), which allows multiple penetrations to be incorporated into one roof cut and installation. Standard modules can accommodate cap packages and pipe hoods, while custom materials and sizes are available when required.
We also offer Custom Pipe Boxes for applications that need greater flexibility. These insulated assemblies mount to an existing or new curb and feature a removable cover, with pipe openings field cut and sealed according to the project’s needs. This range of products allows contractors and engineers to select a penetration method based on the actual application, rather than trying to make one type of product work everywhere.
Pipe Penetration Products for HVAC, Plumbing and Electrical Work
Roof penetrations aren’t limited to one trade, and neither are the problems caused by improperly sealing them. Mechanical and HVAC systems frequently require refrigerant lines and other piping to connect rooftop equipment with systems inside the building. Plumbing systems may require venting or other piping to extend through the roof, while electrical contractors regularly need weatherproof solutions for conduit.
Pate works with professionals across each of these industries. Our electrical roof penetration products include cap packages and pipe hoods designed to help electrical contractors create reliable, weatherproof penetrations. Once piping reaches the rooftop, proper support is another important consideration. Pate’s pipe and duct support products include adjustable pipe roller supports that allow pipes to expand and contract without affecting the roof membrane.
A Better Alternative to Field-Fabricated Fixes
There will always be pressure on contractors to keep projects moving. When a pipe needs to get through the roof and a purpose-built product isn’t immediately at hand, improvising a seal can seem like the fastest solution. The problem is that the consequences may not appear until months or years later.
A penetration that starts leaking after repeated seasonal changes can turn a small installation shortcut into a roof repair, interior damage and a potential liability issue. Compared with those costs, installing a product designed to maintain a watertight penetration from the beginning is a small investment.
Availability doesn’t have to slow down the project, either. Pate maintains a selection of stock pipe penetration products, with orders of 10 pieces or fewer guaranteed to ship within 1-3 days.
Protect Every Roof Penetration with the Right Product
Any time a pipe or conduit passes through a commercial roof, contractors need to consider what will keep that opening watertight for years to come. Caulk and improvised field solutions may provide a temporary seal, but they aren’t a substitute for a system designed specifically to accommodate rooftop penetrations. Pate’s pipe cap packages, pipe hoods, pipe portals, custom pipe boxes and multiple pipe curb assemblies provide cost-effective options for creating durable, reliable penetrations across HVAC, plumbing and electrical applications.
Explore Pate’s complete selection of pipe penetration products to find the right solution for your application. If you need help determining which product is appropriate for your project or require a custom configuration, contact The Pate Company to speak with our team.
