Custom-fabricated scupper box installed on flat-roof commercial building in Chandler, AZ.

Custom Scupper Boxes for Flat Roofs

Roof-edge drainage boxes that protect flat-roof homes and businesses across Chandler and the Greater Phoenix East Valley from pooling water and structural damage.

What is a scupper box? A scupper box is a metal drainage outlet built into the parapet wall or roof edge of a flat or low-slope roof, directing rainwater away from the building and into a downspout instead of letting it pool on the roof.

Scupper boxes are essential for protecting both residential and commercial properties from water intrusion and structural damage in the Phoenix East Valley. Flat roofs have no slope to shed water quickly, so when a monsoon storm hits, the scupper is the exit. If it is undersized, clogged, or rusted through, water backs up on the roof and finds its way into walls, ceilings, and parapet seams.

You likely need this service if you are building a new flat-roof structure, if your existing scupper boxes are failing or rusted, or if you see chronic pooling water on your roof after rain. Catching the problem early costs far less than repairing interior water damage.

A1 Gutters is a family-owned gutter contractor based in Chandler. We bring 29 years of industry experience, a valid ROC license (122570), full insurance, and a commitment to quality that sets us apart from generalist contractors who treat drainage as an afterthought.

A1 Gutters At a Glance

ROC License: #356601
Years in Business: 29 years
Insured: Fully Insured
Family-Owned Since: 1997

Licensed, Insured, and Locally Trusted Since 1997

ROC License #356601

Licensed Arizona contractor

29 Years in Business

Industry experience since 1997

Fully Insured

Protection on every project

Family-Owned & Operated

Local to Chandler, AZ

1. Schedule a free on-site estimate — A1 Gutters visits your property to evaluate drainage needs at no cost.

2. Assess existing scupper openings — The team reviews roof slope, opening dimensions, and drainage requirements.

3. Fabricate custom scupper box — Built to fit your exact opening size and preferred material.

4. Remove old scupper box if needed — Damaged or rusted units are removed and disposed of.

5. Install and seal new scupper box — Connected securely to your downspout system.

6. Inspect and clean up — Final check of water flow and a tidy job site before we leave.

Most scupper box installations and replacements are completed in a single day once materials are on hand, with larger commercial jobs taking 1-2 days depending on the number of openings.

A1 Gutters serves Chandler, Gilbert, Mesa, Scottsdale, and surrounding communities throughout the Greater Phoenix East Valley.

A1 Gutters technician installing a scupper box drainage outlet on a flat roof in Chandler, AZ.

What Affects Scupper Box Pricing?

A1 Gutters has not published a flat rate for scupper box work because every flat roof and opening is different. Instead, your quote depends on a few concrete factors: the metal you choose (aluminum, galvanized steel, or copper), the size and number of scupper openings, the condition of the existing parapet wall or roof edge, and whether old scupper boxes need to be removed and disposed of before the new one is installed. Every project still starts with a free, no-obligation on-site quote so you know the exact cost before any work begins.

Recent Scupper Box Work

Ready to Stop Roof Pooling for Good?

Get a free, no-obligation scupper box quote from A1 Gutters — locally owned, licensed, and insured since 1997.

Scupper Box Questions, Answered

  • What is a scupper box and do I need one?

    A scupper box is a metal drainage outlet built into the parapet wall or roof edge of a flat or low-slope roof, directing rainwater away from the building and into a downspout. If your flat roof pools water or you notice rust, cracks, or leaks around an existing scupper, it likely needs repair or replacement. A1 Gutters can assess your situation during a free quote visit.

  • What materials are scupper boxes made from?

    Scupper boxes are commonly fabricated from aluminum, galvanized steel, or copper — the same materials A1 Gutters works with across their full line of gutter products. The right choice depends on your budget, aesthetic preference, and the existing roofing system. Your installer can recommend the best fit during the site assessment.

  • Do you install scupper boxes on both residential and commercial properties?

    Yes — A1 Gutters serves both residential and commercial customers throughout the Greater Phoenix East Valley, including Chandler, Gilbert, Mesa, Scottsdale, and surrounding communities. Flat roofs are common on commercial buildings as well as modern and mid-century homes, and the team is experienced with both applications.

  • How do I get a estimate for scupper box installation or replacement?

    A1 Gutters offers free estimates by appointment, Monday through Friday from 8 AM to 4 PM. You can reach them by phone at (480) 570-1011 or by email at a1gutteraz@yahoo.com. Military and senior discounts are also available, so be sure to mention your status when you call.

Get Your Free Scupper Box Estimate Today

A1 Gutters has protected flat-roof homes and businesses across Chandler and the Greater Phoenix East Valley since 1997 — reach out for a free, no-obligation estimate.