Discount Roof Drains and Deck Drains
We carry
all types of roof drains, re-roof drains, overflow drains, retrofit drains,
balcony drain, deck drains,
floor drains, roof drain accessories and scupper drains as well as replacement roof drain parts. Our drain solutions include both commercial and residential
drains from leading suppliers like
JDR / J-Drain,
LSP,
Marathon,
Olyflow / Olympic,
Portals Plus,
Smith,
Sun,
Wade,
Watts and
Zurn. Whether you need roof or deck drains for new construction or repair work, we
have what you need.
How
to size drain pipes.
Call us for our competitive price on your
large projects or to discuss your special applications.
We are happy to special order any product and can quickly drop-ship to you
anywhere.
Questions? Email Sales@bestmaterials.com
Or call 1-800-474-7570 / 602-272-8128
You'll get a prompt response !
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ROOF DRAIN PRODUCTS & PRICING:
All Drain
Items
Balcony
Drains (smaller, raised-dome drains)
Balcony / Walk Deck Drains (smaller flat-top / flush style drains)
Clamping Rings and Parts
Composite Drainage (wall, foundation, field, civil, greenroof)
Couplers (drain couplings, connectors, elbows, etc)
Deck Plates, Under deck Plates
Downspout Nozzles and Downspout Covers
Drain Bolts
Drain
Collars and Ring Clamps / Gravel Guards
Drain Covers: FLAT Grates for Storm and Floor Drains
Drain
Covers: METAL Drain Domes, Strainers and Covers
Drain Covers: PLASTIC Drain Domes, Strainers and Covers
Drains,
Clamping Ring Type (for single-ply roofs)
Drain Kits (complete roof and parking garage kits)
Drain Lugs / Clamping Parts
Drain Pipe Connectors: Pipe adaptors, reducers, elbows,
expansion joint (see PIPE SIZING)>
Floor Cleanouts
Floor Drains (flush mount drains)
Grates,
Flat Storm and Floor Grates
Hose Clamps
Misc Drain Parts
(plates, spun bearing pans)
Overflow Drains,
Combination Roof / Overflow Drains
Parapet Drains
Promenade Drains and Accessories (large flat-top drains)
Receivers
Retrofit Drains (retro drains,
all kinds)
Retrofit Drains, Aluminum
Retrofit Drains, Copper
Retrofit Drains, Plastic
Retrofit Drains, Scupper Type
Roof Drains
Re-roof
Drains & Retro Drains (same as Retrofit Drains)
Rubber Pipe Connectors
Scupper
and Side-Outlet Drains
and Accessories
Scupper
Drains, Sheet Metal
Side Outlet / Scupper Drains, Cast
TPO/PVC Drains and Scuppers
DRAIN PRODUCTS, BY MANUFACTURER:
JDR / J-Drains
Josam
Drain
LSP Products / Tech Specialties
Marathon Roof Drains
Olyflow/
Olympic Drains
and Parts
Portals Plus Drains and Parts
RAC Drains and Parts
Smith Drains and Parts
Sun Drains and Parts
Wade Drains and Parts
Watts Drains and Parts
Zurn Drains and Parts
DRAIN CATALOGS AND TECHNICAL INFORMATION:
Connection Types for Drains
Downspout Nozzles
Drain Connection Types
& Methods
Drain Cross Reference Guide
Drain Strainer and Dome Options
Floor/Deck Drain Selector Guide (Watts)
General Roof Drain
Information
Green Roof / Rooftop Garden Comosite Drainage, J-Drain
Green Roof / Rooftop Garden Drains from Zurn
Installation, Retrofit Drains
JDR J-Drain Catalog & and Technical Info for Composite Drainage
Josam
Drain Catalog & List Pricing
Josam
Stainless Steel Drain Products
LSP
Products /
TechSpecialties
Olympic Drain, OlyFlow
Pipe Size Information
Roof Drain Selector Guide (Watts)
Roof
Drain Sizing Charts
Scupper / Parapet Drains and Options
Side Outlet Drain Options
Single Ply Roof Drain Installation Details
Sizing Roof Drains
Smith Replacement Roof Drain Parts Guide
Smith
Roof Drain Catalog & List Pricing
TPO/PVC Drains and Scuppers
Typical Roof Drain Installation
Examples
Wade
Roof Drain Pictures
Watts
Light Commercial Drains
Watts Roof
& Deck Drain
Catalog and List Price
Watts Roof Drain Pictures and Installations
Watts
Specification Drains, Full Catalog (large file)
Zurn Light Commercial Drain
Catalog & List Price
Zurn Replacement Drain Grates (drawings & #'s)
Zurn
Replacement Parts Catalog
Zurn Roof Drain Selection Guide
Zurn
Roof & Floor Drain Catalog & List Price (large file)
MANUFACTURERS: For additional roof drain & floor drain product options, drawings & specifications:
TechSpecialties roof drains
-New
and Retrofit
Drains
Vents
J.R.
Smith Mfg. Co.Drains & Special Plumbing Products.
WADE
WATTS

Information About Manufacturers & Their Products:
LSP Products / Tech Specialties® represents LSP’s reputation for innovation in the roof
drain product line. Products include the Uniflex roof drain with membrane clamps, copper roof drains, plastic adjustable roof drains,
plastic side-outlet roof drains.
Marathon Drains: For more than 40 years, Marathon Drains has specialized in quality roofing drains, scuppers and
breather vents of all types. Popular Marathon products include Proliner retrofit drains, Copper-Tite retrofit drains, Diamond Series copper retrofit roof drains, Duran
Series thermoplastic rubber retrofit roof drains, Parapet / Scupper Drains and Retrofit Scupper Drains, Fast Flow Aluminum retrofit
roofing drains, Century Series copper retrofit roof drains, Economy Century Series copper flange with plastic dome re-roof drains, Side
Outlet horizontal outlets and horizontal discharge copper drains, Promenade Drains and Accessories, Enpoco-Pak and Cast-Pak Complete
Drains kits, Cast Iron Roof Drains, Cast Iron Overflow Roof drain kits, Replacement Drain Strainers, Drain Domes and replacement drain
parts.
OlyFlow family of retrofit roof drains and accessories is a complete line of labor saving and
performance enhancing roof drain products. From the top selling UFlow Hercules RetroDrains, to the RAC Deluxe RetroDrains, they have your
roof drain needs covered. The NewCon new connection drains, drain-guard products and custom fabricated drains available, OlyFlow
products are ready to help you drive profits.
Portals Plus manufactures solutions for roof leak problems. Roof leaks are the biggest
problem of architects and building owners. 85% of all roof leaks occur at penetrations and corners due to poor details which fail to accommodate
movement. Extreme roof temperature swings require durable and flexible flashings. The National Roofing Contractors Association (NRCA) states
that "Pitch pockets or pans by their design, are not intended to be continuously watertight. Their use should not be encouraged since better
methods are available to accomplish the same end. Pitch pans or pockets require frequent inspection and maintenance, and usually a great deal of
damage can occur before the leak around a pitch pocket or pan is evident."
 Roof Drains provide efficient
internal drainage of water from the roof surface. Roof Drains are an effective year-round solution to removing water from the roof surface
in all weather and all seasons. Interior Roof Drains have the advantage over gutters and downspouts because interior Roof Drains are
maintained at the interior building temperature and are far less likely to freeze and back up in harsh northern climates. With the
advent of sloped roof decks and tapered insulations, it has also become necessary to include Overflow Roof Drains to relieve dangerous
overloading of the structural system caused by heavy ponding water
Zurn: Since its founding in 1900 as the Hydromechanics Division, the Zurn Specification Drainage
Operation has been a leading producer of roof drains, deck drains and floor drains for the commercial, industrial and institutional building
construction industry. All the Zurn products are engineered and manufactured to meet all ANSI standards. Architects, engineers, plumbing contractors and wholesalers involved in non-residential construction all specify Zurn drains. Zurn has an excellent 305 page
Customer Guide which lists specifications and technical data needed to properly size roof drains, floor drains, interceptors, carrier systems, hydrants, cleanouts, floor sinks, water hammer
arrestors, traps, primers and backwater valves for new or retrofit installation.
Drain Design & Selection
(courtesy J.R. Smith):
The engineer should lay out the roof drain system consistent with the structural design strength of the roof. Normally for a flat roof with a 30 lb.
sq. ft. design load, the water depth or build-up would be limited to 3". This will keep the load down to approximately 15 lbs. per square
foot. For sloped roofs, the allowed water depth can be greater, but only to the point where the stresses will be within the design
limitations. This will be up to the discretion of the engineer. The roof drainage design can be based on a number of factors. The prime
consideration could be economy, using minimum leaders and storm sewers. The allowable roof load or build-up could limit the design. Or
possibly, drain down time could be the limiting design criteria. In any case, knowing the maximum flow rates, which are controlled, the
engineer can properly size leaders and storm sewers economically consistent with his selected design criteria.
DRAIN DESIGN CONSIDERATIONS:
When designing the roof drain system, the engineer must remember that the roof is being utilized as a temporary reservoir to retain some
water. Flashing and water proofing should be high enough to prevent any leakage. The engineer must also provide adequate strength for
structural safety. In addition, the following considerations should be observed:
These are not absolute requirements, but are suggestions to be considered. The final design is at the discretion of the design
engineer and should be consistent with the roof requirements.
a. On all roofs, use minimum of two drains, if possible.
b. On larger roofs, use a greater number of drains as dictated by design layout.
c. Limit roof area to 25,000 sq. ft. per weir opening.
d. Recommended maximum distance from roof edge to drain is 50 ft. (flat roofs).
e. Recommended maximum distance from end of valley to drain is 50 ft. (sloped roofs).
f. Recommended maximum distance between drains is 200 ft.
g. Provide adequate flashing at parapets, openings, walls, joints, etc.
h. Limit parapet walls or provide overflow scuppers. These should be located at the
anticipated maximum water depth (build-up). If located in a higher position which could
result in a greater flow rate, piping must be sized accordingly.
i. Consider wind effect in locating the drains, and the number of
drains.
j. Possible roof deflection due to load. This could create low spots
and adversely affect drainage and/or structural safety.
Standard Pipe Sizing:
Most pipe sizes are based upon National Pipe Standard sizes (NPS).
Here is data to assist in sizing drain pipes. The PVC link below
includes flow rate capacities.
Copper and Brass pipe dimensions are different
from
PVC Pipe Sizes
<- click links for added details.
Pipe
Size: |
Inside Diameter
Inches
Schedule 40 PVC |
Inside Diameter
Inches
Schedule 80 PVC |
Outside Diameter: Inches(PVC) |
1/2 |
0.602 |
0.526 |
0.840 |
3/4 |
0.804 |
0.722 |
1.050 |
1 |
1.049 |
0.957 |
1.315 |
1 1/4 |
1.380 |
1.278 |
1.660 |
1 1/2 |
1.610 |
1.500 |
1.900 |
2 |
2.067 |
1.939 |
2.375 |
2 1/2 |
2.469 |
2.323 |
2.875 |
3 |
3.068 |
2.900 |
3.500 |
4 |
4.026 |
3.826 |
4.500 |
5 |
5.047 |
4.813 |
5.563 |
6 |
6.065 |
5.761 |
6.625 |
8 |
7.981 |
7.625 |
8.625 |
10 |
9.976 |
9.493 |
10.750 |
12 |
11.889 |
11.294 |
12.750 |
More Pipe Size Info
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