Professional Flat Roof Drain Installation

By The Experts at All Tech Plumbing

Serving Southern California USA

Any flat roof drain installation project, whether it is a new roof drain or an upgrade (such as a drain replacement or changeout) must be done right the first time. It has been said that the roof drainage system is the weakest link on a flat roof. Therefore, it is vital to have a contractor with expert knowledge. 

When it comes to quality of workmanship, knowledge, and experience, ALL TECH Plumbing are the “go to guys” in the Southern Calif, USA area. 

We have been serving Southern California property managers, contractors and homeowners with professional roof drainage plumbing service for the past 25 years with excellent service and quality, state-of-the-art products.

We service the private and public works markets. This includes residential, commercial, industrial and institutional projects.

We use top roof drain brands such as Zurn roof drain,  Jay R. Smith roof drain, Josam roof drain, Wade roof drain, Watts roof drain or a Frank Pattern  roof drain.

Residential Roof Drainage Systems:

Residential roof drainage systems present their own unique set of challenges when addressing a retrofit residential roof drain, as opposed to new construction. What is meant by retrofit? This means installing roof drains on an existing structure. Not a problem, we’ve installed thousands of units. 

Call to schedule onsite inspection today

1 888 900-9145 - (949) 297-8689 -(949) 317-0251

  • Regular service hours are 8 am to 5 pm
  • Excluding holidays and weekends
  • Pacific Time, Mission Viejo, CA. 92691
  • Emergency service is available
  • Email contact  CLICK HERE

This Flat Roof Drain Installation Service Includes These Comprehensive Services

For your convenience, we have the resources to get your project done on time and on budget.

Any Roof Drain Installation - Any Time

Zurn roof drain, JR Smith roof drain, Flat Roof Drain Installation. Plumber, Mission Viejo

You can only make that claim if you have 100% certainty that you possess the knowledge and skill to get the job done.

The professionals at ALL TECH Plumbing will make standing rainwater disappear like magic. We install new primary and overflow roof drains in exactly the right locations.

Changeouts and Upgrades

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Installation is FAST and EASY! Sometimes existing roof drains need to be replaced or upgraded. We use state of the art materials and methods resulting in a quality, professional roof drain installation.

Expert video camera pipe inspection

JR Smith roof drain, Zurn roof drain,

This is modern technology applied to the plumbing field. It is the plumbing industry’s version of a colonoscopy. 

We can see what the drainage issue is without tearing up the property to find out! SAVES TIME AND MONEY!

Roof drain cleaning

drain cleaning a roof drain pipe

Having dirty or clogged roof drain pipes can nullify the benefit of having roof drains. Unlike other types of drains, roof drains are exposed to the elements all of the time. In extreme cases, clogged roof drains can cause a roof to cave in. 

Concrete Scanning

ground penetrating radar


Concrete scanning should be done prior to attempting to core cut the surface. This checks for embedded items electronically and avoids cutting important structural items or electrical conduit.

Concrete Coring

JR Smith roof drain, Zurn roof drain, commercial roof drain

A Definite Must!

This is vital service when the new roof drainage pipes need to pass through the concrete wall and get connected to the roof drains.

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Here is what a professional roof drain installation looks like in action

The experts at All Tech Plumbing Can Eliminate standing rainwater on your flat roof FOREVER!

With literally thousands of projects under our belt, we’ve seen and done just about everything having to do with roof drainage issues. We put our years of plumbing experience and knowledge to work FOR YOU to get the best result possible. We work with related trades to make make sure the end product accomplishes the intended goal.

Our product knowledge is excellent which is a big factor in producing the desired result. We are so good at what we do that we have designed and patented the sump pans on this site.  We’re so confident that we put our own proojects on this website for you to see. 

Roof Drain Testing, Inspection & Certifications

Flat Roof Drain Installation using model LSP roof drain sump pan standard version

Often times an inspection of the storm or roof drainage system is needed prior to to a roofing project. This applies to a post construction also. A certification is required showing the before and after conditions. This will generally include several methods such as video inspections, water flow testing and pressure testing. 

Customer Testimonial

Quality Workmanship and Customer Care Never Go Out Of Style

This project was done in Southern California, USA. 

The roof drains were higher than the surrounding flat roof which was causing excessive ponding. Extensive property damage had been occuring. 

Adding new “sumped” roof drains resolved the problems. The savings in terms of cost of future repairs would range in tens to hundreds of thousands of dollars. 

ALL TECH Plumbing has the knowledge and experience to get the job done right.  

Play Video

Flat Roof Drain Installation projects

Roof Drains Too High

The combination roof drains would not drain the rainwater

Project 01 Florida,USA

Model SCP was used to sump the roof drains

Flat Roof Drain Too High

This roof drain was sitting just higher than the flat roof and caused ponding

project 02 Newport Beach,CA

Using model SSP sump pan resulted in avery successful project.

Roof drain too high!

This roof drain was sitting so high it wouldn't drain the rainwater

project 03 Moreno Valley,CA

Installing model LSP sump pan and a 15" roof drain handled the problem

Coming Soon

Next project

coming soon

Questions? Call us at 1 888 900-9145 or (949) 317-0251

  • 8 am to 5 pm excludes holidays and weekends
  • PST USA or e-mail us
  • Mission Viejo, CA. 92691
  • Calif contractor license 645844
  • Liability and workers comp insurance