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Volko Supply... Online
Servicing Home Owners & Contractors since 1948
A competitively priced full service building supply...Online!
Full service still exists, and here the premium is on service not on price.
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1 800 685 8263

Weathervanes | Solar Attic Fan | Copper Finials | Cupolas | Metal Ceilings | Oak Grilles Vents & Registers | Copper Roof Vents & Flashings | Gutter Accessories | Underground Garbage Cans | Fireplace & Chimney Dampers | Chimney Cap & Covers | Enervex Exhausto Chimney Fans | Chimney Chase Surrounds | Draft Inducers | HVAC Duct Fans

Through-Wall Copper Leader Box

with 4" outlet tube

Installed from "outside" the parapet wall

Stock sizes for our Copper Leader boxes are 4"x4" and 6"x6".  Custom Scuppers available as well.

Hand Made in USA! (Actually in New York)

100% Copper - 16 oz

copper leader box

Volko Supply has been selling these hand made copper through wall scuppers from our Garden City Park location for over 60 years!  Made from 16 oz copper, our scuppers have soldered and crimped seams. They have stood the test of time and the elements. 

These products are made with pride in the United States....they are actually fabricated right here in New York!

Unlike our scupper boxes which install through the inside of the parapet wall, these leaderboxes are installed from the outside.  The copper is then cut, soldered, and flashed into the roof.  On asphalt or built up roofs this can be as simple as some tar and fabric, or using a self adhesive roofing or roofing tape along with some asphalt primer.

While a more difficult install, these leaderboxes do not require an additional leaderhead or collector box to transfer the water from your roof into a drain pipe.  Sometimes these scuppers are used for overflow from the roof to supplement existing vertical roof drains.

 

Volko Supply stocks copper leaderboxes in 4x4 and 6x6 with a 4 inch outlet flange

We can custom make these to any size or dimension you need!  If you need a longer tube, different size outlet, or wider box area let us know.

copper through wall leader box copper side roof drain

 

A X B

C (back of box to back of outlet)

D

4"x4" Copper Leaderbox

4" x 4"

13 5/8"

3 3/8"

6"x6" Copper Leaderbox

6" x 6"

13 5/8"

3 3/8"

 

copper leaderbox outlet box side roof drain

leaderbox outlet soldered seam

copper scupper copper outlet

4x4 copper leaderbox with a 4" copper elbow directly connected to the outlet.  This is an easy way to get water away from the building, though you would normally want to attach a leader or drain pipe. The inside detail of the leaderbox outlet attachment point.  It is fully soldered for a long life. On the left is a through wall scupper with flange, while the unit on the right is a scupper with an outlet tube attached.  The first is an easier install, but will either spill out or must drop into a leader head.  The second is a harder install, but can drain directly into a leader or through an elbow.

 

volko ebay webstore

Need to buy something right now?  Our scuppers, leaderboxes, fancy copper leaderheads, and commercial copper leaderheads are available for sale at our Ebay Store.  Please call us (1-800-685-8263) or email us (info@volko.com) for multiple item discounts and custom work.

NEED CUSTOM COPPER SCUPPERS??

long custom copper scupper roof drain

A 5' long through the wall copper scupper.  This is being used to drain a flat roof through a mansard roof.  Note that the seam is fully soldered.  It is also double locked to ensure the drain lasts, and survives freeze thaw cycles common in the North East.  Check out some of our other custom work here!

 

flooded flat roof

Getting water off of a flat roof should be a priority for every building owner.  More problems come from standing water freezing and getting into seams, getting under flashings, and eating away at the material.  If you have any questions about flat roofing or roof drains feel free to call us at our New Hyde Park  or Port Jefferson location.

The problem here is the flat roof has sunk down below the level of the scupper drain.  Either the scupper has to be lowered, the roof needs to be re-pitched, or a vertical flat roof drain has to be installed.

 

HOW MANY ROOF DRAINS DO I NEED?!?!?!?!

The answer to this question really is: it depends. 

That being said there are charts to help you, as well as common sense.

How is your roof pitched?  If the water doesn't flow to a drain, it will never leave the roof.  Any direction water goes, it needs an exit.

The table below shows how many square foot of roof different size drains can handle at differing amounts of rainfall.  Remember to consult your local building code and inspectors.

Example: In New York the max rainfall per hour is 5".  At that rate, a 4" roof drain can handle 3,680 SF of roof.

 

REMEMBER THAT YOUR ROOF DRAIN IS CONSTRAINED BY THE LEADER SIZE AS WELL!!

roof drain sizing chart

Click here for full sizing guide

Solar Attic Fan | Copper Finials | Cupolas | Metal Ceilings | Oak Grilles Vents & Registers | Copper Roof Vents & Flashings | Gutter Accessories | Underground Garbage Cans
Fireplace & Chimney Dampers | Chimney Cap & Covers | Enervex Exhausto Chimney Fans | Chimney Chase Surrounds | Draft Inducers | HVAC Duct Fans

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Garden City Park, N.Y. 11040

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