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Sump RetroDrain

The Sump RetroDrain is a pre-fabricated drain sump and integrated OMG retrofit drain in one easy-to-install product for enhanced rooftop productivity. The OMG Sump RetroDrain is designed to eliminate the labor-intensive, multi-step process of field fabricating a drain sump, and re-working or installing a drain on TPO membrane roofs.

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Features & Benefits

Features & Benefits

  • Installs in about one-third the amount of time vs. making a sump and installing or re-working a drain for maximum productivity.
  • Heavy duty cast aluminum strainer dome features OMG’s exclusive Vortex Breaker Technology which helps improve flow performance and gets water and excess weight off the roof faster.
  • TPO sumps are made with durable closed cell polyurethane that provides an average R-Value of 6.5, compatible with most TPO membranes, and UV stable for long-term roof performance.
  • Sump RetroDrains feature a standard 9.75-inch drain stem and the proven U-Flow Mechanical Seal, which exceeds the ANSI/SPRI RD1 Standard for a secure, watertight connection.
  • Sump RetroDrains are flashed at the highest point of the sump and not around the drain for improved rooftop quality.
Product Use

Product Use

OMG Sump RetroDrains are pre-fabricated TPO drain sumps with integrated OMG retrofit roof drain in one easy-to-install product for enhanced rooftop productivity.

OMG Sump RetroDrains are designed to eliminate the labor-intensive, multi-step process of field fabricating a drain sump, and installing or re-working the drains.

A standard 9.75-inch drain stem accommodates most field conditions and can be shortened if necessary. The proven U-Flow Mechanical Seal, which exceeds the ANSI/SPRI RD1 Standard, can provide a secure, watertight connection to the existing drain leader.

Technical Data

Technical Data

The following is accurate for all Sump RetroDrains:

Drain Body: .187 TPO formed thermoplastic
Dimension: 4- x 4-ft. Perimeter with 1-in. tall perimeter edge
Body Cavity: Closed cell polyurethane. Average R-Value is 6.5
Drain Seal: Proven U-Flow mechanical seal.
Strainer Dome: Cast aluminum, yellow powder-coated with integrated Vortex Breaker and Twist-Lock seal
Drain System: Standard 9.75-inch length.
Drain Sizes: 3-, 4-, 5-, and 6-inches for most applications.
Slope: 1:12-inches (nominal)

APPROVALS

ANSI/SPRI RD-1 – is a national performance standard for retrofit roof drains which requires the seal to hold a 10-ft. column of water for 24 hours without leaking.

Packaging Info

Packaging Info

Cat. No. Size (In) For Use With Package Quantity Quantity Per Skid
SUMPTPO3V 3 TPO 1 6
SUMPTPO4V 4 TPO 1 6
SUMPTPO5V 5 TPO 1 6
SUMPTPO6V 6 TPO 1 6
Performance Data

Performance Data

TEST STANDARD TEST DESCRIPTION MEASUREMENT/TARGET VALUE LOCATION
ASTM E108 Spread of Flame Test A fire-test-response standard that is used to evaluate roof coverings in both residential and commercial roofing applications for materials used on combustible or noncombustible desks. Measures how quickly flame will spread once the roof assembly catches fire. The OMG Sump RetroDrain meets or exceeds the requirements of a Class A fire rated roof assembly. Third Party
ASTM D6978 Weathering & Visual Inspection Advanced weathering simulates years of UV and heat exposure as well as wet dry cycling. This specification covers flexible sheet made from thermoplastic polyoledfin (TOP) as the principal polymer, intended for use in single-ply roofing membranes exposed to the weather. The OMG Sump RetroDrain meets or exceeds the requirements of the ASTM D6878 Visual Inspection. Third Party
ASTM D412 Tensile Strength and Elongation at Break A common standard for determining tensile properties of vulcanized (thermoset) rubber and thermoplastic elastomers. Sump drain material was tested post weathering. The OMG Sump RetroDrain material tensile strength =2480 (psi); Elongation at Break = (46%) Third Party
UL2218 Impact Testing Impact resistance testing for the evaluation of low slope roofing systems. The test evaluates the effect of impact from a steel ball at locations on the assembly selected to be most vulnerable, such as (but not limited to) edges, corners, unsupported sections and joints The OMG Sump RetroDrain meets or exceeds the requirements of the UL2218 impact in 40 drop locations. Drain impacted with and without membrane attached as well as in both flat and material creased areas. Third Party
ASPE/IAPMO?ANSI Z1034-2015 Flow testing Test Method for Evaluating Roof Drain Performance and conducted in accordance with Section 4.1 "Vertical-Pipe Roof-Drain Test." See Flow Rates Table Third Party
ANSI/SPRI RD1 A national performance standard for retrofit roof drains that covers many design considerations inclusive a leak test. Drain bodies with backflow seals shall withstand a continuous test pressure under the equivalent of a 10-foot head of water or 4.33 lbf/in.2 (30 kPa) above the elevation of the backflow seals without any visible leakage after 24 hours. Laboratory test method RF-1 shall be used to test the backflow seals. The OMG Sump RetroDrain meets or exceeds the standard. In House
Membrane Weld Study OMG Performed extensive testing that included welding new membrane to new sump material, tested immediately; welding new membrane to new sump material aged together and tested; welded new membrane to aged sump material and tested. The OMG Sump RetroDrain material is compatible and welds to all major brands of commercially available TPO roofing membranes. In House
Flow Rates for 4" sump drain: (test data of other sizes available as testing is completed)
Water Head Level (In.) Actual Head Level (In.) Volumetric Flow Rate (gpm)
1 1.1 40
2 1.9 95
3 3 184
4 4.1 274
5 4.9 291
6 5.9 410