Cooper B-Line Dura-Blok™ Rooftop Support Solutions

Economical Support System for Raised Rooftop Applications

QZC-DBM
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What's special about these rooftop support blocks?

  • Affordable, rooftop support system available in a wide range of configurations for securely mounting pipes, cable trays, grated walkways, HVAC equipment, and other applications
  • Dependable rubber construction will not float or blow away, and delivers a longer, more reliable lifespan than wood blocks or cheap plastic imitations
  • Made from 100% recycled rubber and qualifies for LEED credits, which is ideal for companies looking to make facilities eco-friendly and reduce their footprint on the environment
  • Click for More Features

The Dura-Blok™ Rooftop Support System from Cooper B-Line is designed to provide years of reliable service in harsh outdoor environments. These specialized Dura Block roof supports are molded from 100% recycled rubber to provide a safe yet dependable base onto which a wide range of rooftop piping, conduit, and even HVAC equipment can be mounted without causing long-term damage to the roofing.

Support Bases | DB Series | DB6 Series | DB10 Series | DBE Series
DB_DS Series | DBM Series | DBR Series | Accessories

Support Bases
Part #DescriptionLoad CapacityHeightWidthLengthWeightPrice
QZC-DBMDuraBlok Rooftop Support Base500 lbs4" (101mm)6" (152mm)4.8" (122mm)4.48 lbs (2.03kg)
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QZC-DBPDuraBlok Rooftop Support Base500 lbs4" (101mm)6" (152mm)9.6" (244mm)2.35 lbs (1.07kg)
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DB Series
Part #DescriptionLoad CapacityHeightWidthLengthWeightPrice
QZC-DB5DuraBlok Base w/ 1" High Channel500 lbs5" (127mm)6" (152mm)4.8" (122mm)2.75 lbs (1.25kg)
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QZC-DB10DuraBlok Base w/ 1" High Channel500 lbs5" (127mm)6" (152mm)9.6" (244mm)5.28 lbs (2.39kg)
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QZC-DB20DuraBlok Base w/ 1" High Channel1,000 lbs5" (127mm)6" (152mm)20.2" (513mm)10.63 lbs (4.82kg)
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QZC-DB30DuraBlok Base w/ 1" High Channel1,500 lbs5" (127mm)6" (152mm)30.8" (782mm)15.99 lbs (7.25kg)
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QZC-DB40DuraBlok Base w/ 1" High Channel2,000 lbs5" (127mm)6" (152mm)41.4" (1052mm)21.34 lbs (9.68kg)
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QZC-DB48DuraBlok Base w/ 1" High Channel2,500 lbs5" (127mm)6" (152mm)52.0" (1321mm)26.70 lbs (12.4kg)
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DB6 Series
Part #DescriptionLoad CapacityHeightWidthLengthWeightPrice
QZC-DB610DuraBlok Base w/ 2.625" High Channel500 lbs.6.625" (167mm)6" (152mm)9.6" (244mm)6.36 lbs (2.88kg)
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QZC-DB620DuraBlok Bases w/ 2.625" High Channel1,000 lbs.6.625" (167mm)6" (152mm)20.2" (513mm)12.90 lbs (5.85kg)
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QZC-DB630DuraBlok Bases w/ 2.625" High Channel1,500 lbs.6.625" (167mm)6" (152mm)30.8" (782mm)19.45 lbs (8.82kg)
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QZC-DB640DuraBlok Bases w/ 2.625" High Channel2,000 lbs.6.625" (167mm)6" (152mm)41.4" (1052mm)26.00 lbs (11.79kg)
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QZC-DB648DuraBlok Bases w/ 2.625" High Channel2,500 lbs.6.625" (167mm)6" (152mm)52.0" (1321mm)32.55 lbs (14.76kg)
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DB10 Series
Part #DescriptionLoad CapacityHeightWidthLengthWeightPrice
QZC-DB10-28DuraBlok Bridge w/ 1.625" High Channel1,000 lbs.5.625" (143mm)9.6" (244mm)28" (711mm)13.16 lbs (5.97kg)
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QZC-DB10-36DuraBlok Bridge w/ 1.625" High Channel1,000 lbs.5.625" (143mm)9.6" (244mm)36" (914mm)14.36 lbs (6.51kg)
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QZC-DB10-42DuraBlok Bridge w/ 1.625" High Channel1,000 lbs.5.625" (143mm)9.6" (244mm)42" (1067mm)15.52 lbs (7.04kg)
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QZC-DB10-50DuraBlok Bridge w/ 1.625" High Channel1,000 lbs.5.625" (143mm)9.6" (244mm)50" (1270mm)16.45 lbs (7.46kg)
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QZC-DB10-60DuraBlok Bridge w/ 1.625" High Channel1,000 lbs.5.625" (143mm)9.6" (244mm)60" (1524mm)17.94 lbs (8.14kg)
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DBE Series
Part #DescriptionLoad CapacityHeightWidthLengthWeightPrice
QZC-DBE10-8DuraBlok w/ Rod Risers and 1" Channel200 lbs.5.5" - 8" (140 - 203mm)6" (152mm)9.35" (161mm)5.68 lbs (2.58kg)
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QZC-DBE10-12DuraBlok w/ Rod Risers and 1" Channel200 lbs.5.5" - 12" (140 - 305mm)6" (152mm)9.35" (161mm)5.72 lbs (2.59kg)
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QZC-DBE10-16DuraBlok w/ Rod Risers and 1" Channel200 lbs.5.5" - 16" (140 - 406mm)6" (152mm)9.35" (161mm)5.76 lbs (2.61kg)
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DB_DS Series
Part #DescriptionLoad CapacityHeight (Overall)Width (Overall)LengthWeightPrice
QZC-DB2318DSDuraBlok w/ 1.625" Vertical and Horizontal Channels1,000 lbs.23" (584mm)25.625" (651mm)20.2" (513mm)33.31 lbs (15.11kg)
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QZC-DB2918DSDuraBlok w/ 1.625" Vertical and Horizontal Channels1,000 lbs.29" (736mm)25.625" (651mm)20.2" (513mm)35.00 lbs (15.88kg)
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QZC-DB4118DSDuraBlok w/ 1.625" Vertical and Horizontal Channels1,000 lbs.41" (1041mm)25.625" (651mm)20.2" (513mm)38.40 lbs (17.42kg)
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QZC-DB5318DSDuraBlok w/ 1.625" Vertical and Horizontal Channels1,000 lbs.53" (1346mm)25.625" (651mm)20.2" (513mm)41.80 lbs (18.96kg)
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QZC-DB2324DSDuraBlok w/ 1.625" Vertical and Horizontal Channels1,000 lbs.23" (584mm)31.625" (803mm)20.2" (513mm)34.15 lbs (15.49kg)
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QZC-DB2924DSDuraBlok w/ 1.625" Vertical and Horizontal Channels1,000 lbs.29" (736mm)31.625" (803mm)20.2" (513mm)35.84 lbs (16.26kg)
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QZC-DB4124DSDuraBlok w/ 1.625" Vertical and Horizontal Channels1,000 lbs.41" (1041mm)31.625" (803mm)20.2" (513mm)39.25 lbs (17.80kg)
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QZC-DB5324DSDuraBlok w/ 1.625" Vertical and Horizontal Channels1,000 lbs.53" (1346mm)31.625" (803mm)20.2" (513mm)42.65 lbs (19.34kg)
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QZC-DB2336DSDuraBlok w/ 1.625" Vertical and Horizontal Channels1,000 lbs.23" (584mm)43.625" (1108mm)20.2" (513mm)35.84 lbs (16.26kg)
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QZC-DB2936DSDuraBlok w/ 1.625" Vertical and Horizontal Channels1,000 lbs.29" (736mm)43.625" (1108mm)20.2" (513mm)37.55 lbs (17.03kg)
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QZC-DB4136DSDuraBlok w/ 1.625" Vertical and Horizontal Channels1,000 lbs.41" (1041mm)43.625" (1108mm)20.2" (513mm)40.95 lbs (18.57kg)
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QZC-DB5336DSDuraBlok w/ 1.625" Vertical and Horizontal Channels1,000 lbs.53" (1346mm)43.625" (1108mm)20.2" (513mm)44.34 lbs (20.11kg)
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QZC-DB2348DSDuraBlok w/ 1.625" Vertical and Horizontal Channels1,000 lbs.23" (584mm)55.625" (1415mm)20.2" (513mm)37.55 lbs (17.03kg)
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QZC-DB2948DSDuraBlok w/ 1.625" Vertical and Horizontal Channels1,000 lbs.29" (736mm)55.625" (1415mm)20.2" (513mm)39.25 lbs (17.80kg)
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QZC-DB4148DSDuraBlok w/ 1.625" Vertical and Horizontal Channels1,000 lbs.41" (1041mm)55.625" (1415mm)20.2" (513mm)42.65 lbs (19.34kg)
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QZC-DB5348DSDuraBlok w/ 1.625" Vertical and Horizontal Channels1,000 lbs.53" (1346mm)55.625" (1415mm)20.2" (513mm)46.03 lbs (20.88kg)
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DBM Series
Part #DescriptionLoad CapacityMax. HeightWidthLengthWeightPrice
QZC-DBM-05CTDuraBlok w/Rod Risers and 0.5" Dura Copper Clamp50 lbs.11.19" (284mm)6" (152mm)4.80" (122mm)2.75 lbs (1.25kg)
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QZC-DBM-75CTDuraBlok w/ Rod Risers and 0.75" Dura Copper Clamp50 lbs.11.34" (288mm)6" (152mm)4.80" (122mm)2.76 lbs (1.25kg)
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QZC-DBM-10CTDuraBlok w/ Rod Risers and 1.0" Dura Copper Clamp50 lbs.11.45" (291mm)6" (152mm)4.80" (122mm)2.84 lbs (1.29kg)
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QZC-DBM-125CTDuraBlok w/ Rod Risers and 1.25" Dura Copper Clamp50 lbs.11.63" (295mm)6" (152mm)4.80" (122mm)2.95 lbs (1.34kg)
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QZC-DBM-150CTDuraBlok w/ Rod Risers and 1.5" Dura Copper Clamp50 lbs.11.78" (299mm)6" (152mm)4.80" (122mm)2.96 lbs (1.34kg)
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QZC-DBM-20CTDuraBlok w/ Rod Risers and 2.0" Dura Copper Clamp50 lbs.12.03" (305mm)6" (152mm)4.80" (122mm)3.03 lbs (1.37kg)
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QZC-DBM-05DuraBlok w/ Rod Risers and 0.5" Malleable Iron Clamp50 lbs.11.36" (288mm)6" (152mm)4.80" (122mm)2.78 lbs (1.26kg)
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QZC-DBM-75DuraBlok w/ Rod Risers and 0.75" Malleable Iron Clamp50 lbs.11.56" (293mm)6" (152mm)4.80" (122mm)2.84 lbs (1.29kg)
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QZC-DBM-10DuraBlok w/ Rod Risers and 1.0" Malleable Iron Clamp50 lbs.11.64" (296mm)6" (152mm)4.80" (122mm)2.86 lbs (1.30kg)
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QZC-DBM-125DuraBlok w/ Rod Risers and 1.25" Malleable Iron Clamp50 lbs.11.75" (298mm)6" (152mm)4.80" (122mm)2.93 lbs (1.33kg)
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QZC-DBM-150DuraBlok w/ Rod Risers and 1.5" Malleable Iron Clamp50 lbs.11.92" (303mm)6" (152mm)4.80" (122mm)2.99 lbs (1.36kg)
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QZC-DBM-20DuraBlok w/ Rod Risers and 2.0" Malleable Iron Clamp50 lbs.12.16" (309mm)6" (152mm)4.80" (122mm)3.10 lbs (1.41kg)
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DBR Series
Part #DescriptionLoad CapacityHeightWidthLengthWeightPrice
QZC-DBR10-12DuraBlok w/ Rod Risers and 3.5" Pipe Roller200 lbs.up to 12" (305mm)6" (152mm)9.6" (244mm)6.46 lbs (2.93kg)
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QZC-DBR2-305DuraBlok w/ 1" High Channel and 3.5" Pipe Roller500 lbs.7.09" (180mm)6" (152mm)9.6" (244mm)5.28 lbs (2.39kg)
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QZC-DBR4-6DuraBlok w/ 1" High Channel and 6" Pipe Roller500 lbs.7.09" (180mm)6" (152mm)9.6" (244mm)10.63 lbs (4.82kg)
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QZC-DBR8-10DuraBlok w/ 1" High Channel and 10" Pipe Roller1000 lbs.8.34" (212mm)6" (152mm)20.2" (513mm)15.99 lbs (7.25kg)
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QZC-DBR12-14DuraBlok w/ 1" High Channel and 14" Pipe Roller1000 lbs.9.38" (238mm)6" (152mm)20.2" (513mm)21.34 lbs (9.68kg)
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QZC-DBR16-20DuraBlok w/ 1" High Channel and 20" Pipe Roller1000 lbs.9.78" (248mm)6" (152mm)20.2" (513mm)26.70 lbs (12.11kg)
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Accessories
Part #DescriptionLoad CapacityHeightWidthLengthWeightPrice
QZC-CLDP10Dura-Blok Load Distribution Plate with SlotsDBE & DBR Series 500 lbs.11 Ga. (3.05mm)1.625" (41mm)9.5" (241mm)0.53 lbs (0.24kg)
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  • Designed with open ends and a channel to allow for proper drainage
  • Smooth rubber composition absorbs heavy loads without becoming sharp or abrasive, which helps to extend the life of your roof and eliminate additional maintenance typically required with wooden support blocks
  • Durable yet gentle design requires no roof penetration or adhesion for installation
  • Dampens vibration from AC equipment, so there is no need for additional rubber padding or noise reduction insulation
  • 14 gauge, galvanized steel channel is through-bolted on all sizes to maintain a high level of strength and weight capacity
  • On longer assemblies, each block is spaced 1" apart to allow water to flow freely, preventing additional stress or the collection of stagnant water
  • Reflective strip on each side provides clear visibility while helping to reduce roof-related accidents

 

Dura-Blok Applications:

  • Pipe Supports
  • HVAC Supports
  • Roof Walkway Supports
  • Duct Supports
  • Conduit Supports
  • Cable Tray Supports

 

Density 0.52 oz/cu in ASTM C642
Durometer Hardness 67.2A ± 1 ASTM D2240
Tensile Strength 231 psi minimum ASTM D412
Compression Deformation 5% at 70 psi and 72° F ASTM D395
Brittleness at Low Temp -50° F ASTM D746
Freeze and thaw when exposed to deicing chemicals No loss after 50 cycles ASTM C672
Coefficient of Thermal Expansion 8 x 10 -6 in/in/ °F (min) ASTM C531
Weathering 70 hours at 120º F - ASTM D573
A - Hardness retained 100% (±5%)
B - Compressive strength 100% (±5%)
C - Tensile strength 100% (±5%)
D - Elongation retained 100% (±5%)

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Questions & Answers

Question:

Inspector is asking me if it is ok to cut Dura-blok. I cant find anything to show him proof of being able to cut Dura-blok to the size neccessary

Asked by Anonymous user on 06/8/2017 10:47 AM

Answer:
  • - Hello, the manufacturer does NOT recommend cutting down one to the necessary size. They suggest looking for the appropriate size that you might need for your job.

    Anonymous user on 06/23/2017 1:06 PM
Question:

Can the Durablock be glued down to a roof surface?

Asked by Anonymous user on 09/13/2017 2:26 PM

Answer:
  • - Unfortunately, these Durablock Support Solutions cannot be glued to a roof surface.

    andrew b. on 09/13/2017 4:53 PM

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