Roof Top Pipe Support that's engineered to be 10 Times Better... Roof Top Blox!

Our revolutionary roof top support block system works with height extension rods, pipe support brackets, pipe roller brackets, strut support brackets, and more. Versatile enough for every roof plumbing support, roof piping support, and roof platform support need, even our packaging makes transporting roof support blocks to the job — and roof top — a faster and more efficient process.

Easier installation and lasting dependability make Roof Top Blox the best roof block choice to specify or install for supporting pipes and mechanical equipment on flat commercial roofs.

  • Faster and easier to install, expand and adjust from the top side of the roof block

  • No roof penetration. Features a protective, padded base

  • Black UV stabilized/resistant

  • Support for gas, condensate or refrigeration lines, electrical conduits, ductwork, roof top walkways

  • Rated for temperatures up to 200°F (93°C)

  • Great packaging for transport

  • Products 1-8 of 8
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    ChemLink, F1270 M-1 Structural Adhesive Sealant - Case/24
    M-1, a strong, green adhesive sealant, bonds aggressively to EPDM, PVC, BUR and more!
    Price: $209.75
    review-star review-star review-star review-star review-star
    (1)
    Availability: In Stock
    ChemLink Item #: CHE-F1270 -

    ChemLink M-1 Structural Adhesive Sealant is a moisture-cure, multi-purpose adhesive and sealant used for bonding and sealing a variety of construction materials. It forms a durable, elastomeric, waterproof bond suitable for conditions where structural adhesion and weather resistance are required. This 10.1 oz cartridge is designed for use with a standard caulking gun and is formulated to apply effectively in damp, dry, and cold climates. The solvent-free, polyether formula is capable of...

    Roof Top Blox – RTB-01 Adjustable Rooftop Pipe Support...
    Install From The Top Engineering
    Price: $17.95
    Availability: In Stock
    Roof Top Blox Item #: RTB-RTB-01 -

    The RTB-01 Roof Top Blox is a durable, non-penetrating rooftop pipe support block that protects flat roofing membranes while supporting HVAC piping, conduit, cable tray, and light mechanical runs. Key Features: • Non-penetrating design preserves roof membranes • UV-resistant polypropylene construction for long service life • Closed-cell foam pad cushions and spreads load • Molded saddles accept pipe strap or strut hardware • Lightweight block for fast placement and layout ...

    Roof Top Blox SCB-07 Securing Brackets (Pair)
    Use for Wind, Water and Snow Load Conditions
    Price: $18.95
    Availability: In Stock
    Roof Top Blox Item #: RTB-SCB-07 -

    The SCB-07 Roof Top Blox securing brackets, made from durable UV-resistant polycarbonate, anchor RTB-01 support blocks securely to the roof surface. Ideal for high-exposure installations, these brackets lock onto the blox tabs and bond to the roof membrane using structural adhesive, preventing displacement from wind, water, or snow.Key Features: • Pair of UV-resistant polycarbonate brackets • Locks onto blox tabs and bonds to roof for secure anchoring • Uses M-1 (ADH-12) structural adhesive...

    Roof Top Blox – XTB-02 Height Extension Kit, 1.5...
    Fastens Directly on Top of Blox
    Price: $11.76
    Availability: In Stock
    Roof Top Blox Item #: RTB-XTB-02 -

    The XTB-02 Roof Top Blox is a polypropylene height extension accessory designed to raise the RTB-01 block by 1.5″, bringing total support height to approximately 6″. It installs flush on top of existing blocks using included screws or elevates using threaded rods, offering flexible installation for varied rooftop piping needs.Key Features: • Adds 1.5″ height extension, achieving approx. 6″ total stack height • Molded saddle-top design mirrors RTB-01 for pipe organization • Fastens directly...

    Roof Top Blox – ROD-03 12 Threaded Extension Rods (Pair)
    Bagged Kit (Rods, Nuts, Washers)
    Price: $17.05
    Availability: In Stock
    Roof Top Blox Item #: RTB-ROD-03 -

    The Roof Top Blox ROD-03 are zinc-plated, ½″ threaded extension rods—sold as a pair—that elevate blox assemblies up to 14″ total height. The kit includes rods, nuts, and washers for secure top-side access and height adjustment without penetrating the roofing membrane.Key Features: • Two 12″ zinc-plated ½″ threaded rods • Includes eight nuts and four washers for mounting • Elevates blox assemblies safely up to 14″ overall • Allows top-side assembly and tension control—no roof penetrations •...

    Roof Top Blox – ROL-05 Small Pipe Roller, 1"–3" Aluminum
    Price: $45.00
    Availability: In Stock
    Roof Top Blox Item #: RTB-ROL-05 -

    The ROL-05 Roof Top Blox small pipe roller is a lightweight aluminum accessory that supports 1″ to 3″ diameter piping on flat roofs. It reduces wear from thermal expansion and simplifies movement. The roller can be mounted centrally or side-by-side on RTB-01 or XTB-02 blocks and can also be elevated using ROD-03 rods for adjustable application. Key Features: • Supports 1″–3″ pipe with smooth aluminum roller • Lightweight aluminum construction for long-term durability • Mounts centrally or...

    ChemLink F1277-W - M-1 Structural Adhesive Sealant, 5 oz...
    M-1, a strong, white adhesive sealant, bonds aggressively to EPDM, PVC, BUR and more!
    Price: $220.00
    Availability: In Stock
    ChemLink Item #: CHE-F1277-W -

    The ChemLink M-1 F1277-W is a reliable, moisture-curing structural adhesive sealant in a convenient 5 oz squeeze tube. Ideal for tight spaces and quick repairs, this solvent-free, elastomeric formula works in cold, damp, or vertical applications without shrinking, outgassing, or discoloration. Bonds to a wide variety of surfaces and is paintable within 24 hours for a clean, professional finish. M-1 Data Sheet M-1 Guide Specs M-1 MSDS M-1 Brochure ...

    Roof Top Blox – ROL-06 Large Pipe Roller, 4–6 Aluminum
    Price: $77.25
    Availability: In Stock
    Roof Top Blox Item #: RTB-ROL-06 -

    The ROL-06 Roof Top Blox large pipe roller is a rugged aluminum accessory that supports 4″ to 6″ diameter piping on flat roofs. Designed with an integrated strut and mounting hardware, this roller minimizes wear from thermal expansion and contraction. It can be mounted directly on RTB-01 or elevated using ROD-03 threaded rods for adaptable piping support assemblies.Key Features: • Durable aluminum roller for 4″–6″ pipe diameter • Integrated strut with included mounting hardware (screws and...

    Best Sellers

    ChemLink, F1270 M-1 Structural Adhesive Sealant - Case/24
    M-1, a strong, green adhesive sealant, bonds aggressively to EPDM, PVC, BUR and more!
    Price: $209.75
    review-star review-star review-star review-star review-star
    (1)

    ChemLink M-1 Structural Adhesive Sealant is a moisture-cure, multi-purpose adhesive and sealant used for bonding and sealing a variety of construction materials. It forms a durable, elastomeric, waterproof bond suitable for conditions where structural adhesion and weather resistance are required. This 10.1 oz cartridge is designed for use with a standard caulking gun and is formulated to apply effectively in damp, dry, and cold climates. The solvent-free, polyether formula is capable of...

    Roof Top Blox – RTB-01 Adjustable Rooftop Pipe Support...
    Install From The Top Engineering
    Price: $17.95

    The RTB-01 Roof Top Blox is a durable, non-penetrating rooftop pipe support block that protects flat roofing membranes while supporting HVAC piping, conduit, cable tray, and light mechanical runs. Key Features: • Non-penetrating design preserves roof membranes • UV-resistant polypropylene construction for long service life • Closed-cell foam pad cushions and spreads load • Molded saddles accept pipe strap or strut hardware • Lightweight block for fast placement and layout ...

    Roof Top Blox SCB-07 Securing Brackets (Pair)
    Use for Wind, Water and Snow Load Conditions
    Price: $18.95

    The SCB-07 Roof Top Blox securing brackets, made from durable UV-resistant polycarbonate, anchor RTB-01 support blocks securely to the roof surface. Ideal for high-exposure installations, these brackets lock onto the blox tabs and bond to the roof membrane using structural adhesive, preventing displacement from wind, water, or snow.Key Features: • Pair of UV-resistant polycarbonate brackets • Locks onto blox tabs and bonds to roof for secure anchoring • Uses M-1 (ADH-12) structural adhesive...

    Roof Top Blox – XTB-02 Height Extension Kit, 1.5...
    Fastens Directly on Top of Blox
    Price: $11.76

    The XTB-02 Roof Top Blox is a polypropylene height extension accessory designed to raise the RTB-01 block by 1.5″, bringing total support height to approximately 6″. It installs flush on top of existing blocks using included screws or elevates using threaded rods, offering flexible installation for varied rooftop piping needs.Key Features: • Adds 1.5″ height extension, achieving approx. 6″ total stack height • Molded saddle-top design mirrors RTB-01 for pipe organization • Fastens directly...

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