The best pipe supports for a roof depend on the pipe load, the support material, and whether you need a pre-cut block or a strut-equipped base. The ROOFTOP SLEEPER SUPPORT 4-pack is a practical pick for common rooftop lines, while Newhouse Electric’s strut support is suited to securing conduit with compatible clamps. HIGHCRAFT offers a stated 750-pound capacity, and BULLKE’s mini supports come in a four-pack. Compare the listed dimensions and capacity with your project, and confirm that the roof surface and installation method are appropriate before placing supports.
| Product | Best For | Key Listed Detail |
|---|---|---|
| ROOFTOP SLEEPER SUPPORT 4-Pack | Pre-cut PVC support blocks | Six-inch length |
| Newhouse Electric RTS14-5 | Conduit secured with strut | 500-pound stated capacity |
| HIGHCRAFT STC-10T | Higher stated load capacity | 750-pound stated capacity |
| BULLKE Mini Rooftop Supports | Compact supports sold as a four-pack | 300-pound stated capacity |
| MIRO-CG 9-Pack | Projects needing cut-to-length PVC | Thirty-six-inch pieces |
ROOFTOP SLEEPER SUPPORT 4-Pack
These PVC rooftop support blocks arrive pre-cut to six inches, making them a straightforward option when that length suits the layout. The listed uses include water lines, gas pipes, electrical conduit, metal plumbing pipes, condensate lines, refrigeration pipes, and walkway planks.
Best for: Buyers who want several ready-to-use supports for small rooftop lines. The product is described as a non-penetrating support option: pipes can be attached with pipe guides, clamps, tab tape, or other hardware. Limitation: That attachment hardware is not included, so plan for it separately.
Newhouse Electric RTS14-5 Strut Support
This support block includes a 14-gauge, 1.625-inch galvanized steel strut for securing conduit. The listed load capacity is 500 pounds. Its roofing material is UV-resistant rubber made from 100% recycled material.
Best for: Installations where a strut is useful for securing conduit, rather than a simple standalone PVC block. Choose this if the listed capacity and strut configuration fit the planned system. Limitation: The stated 500-pound capacity is a product specification, not a substitute for checking the load across the complete installation, including pipe, spacing, and attachment hardware.
HIGHCRAFT STC-10T Support Block
The HIGHCRAFT STC-10T is a solid recycled-rubber block supplied with pregalvanized steel strut. Its listed capacity is 750 pounds. The manufacturer describes it for piping, cable tray, electrical conduit, and HVAC equipment used with strut clamps on roofs or other flat surfaces. A green reflector is included on the block.
Best for: Buyers seeking a strut-equipped support with the highest stated capacity among the products in this selection. Its rubber construction is listed as UV- and corrosion-resistant. Limitation: Strut clamps are referenced for securing equipment but are not listed as included, so confirm what additional hardware your installation requires.
BULLKE Mini Rooftop Pipe Supports
This four-pack measures 6 by 6 by 3 inches per the product name and has a stated 300-pound capacity. The supports are made from 100% recycled plastic and are described as UV-resistant. Listed applications include conduit, PVC, metal pipes, and rooftop support uses.
Best for: Buyers who need multiple compact supports and want a stated capacity for comparing options. The recycled plastic construction and UV-resistance claim may also matter for outdoor installations. Limitation: Check the support’s dimensions and load rating against the specific pipe and spacing plan; the listing does not specify a universal capacity for every arrangement.
MIRO-CG 9-Pack PVC Rooftop Support
This product supplies nine 36-inch PVC support pieces that can be cut to the desired length. The listed recommended minimum length is six inches for adequate stability. Uses include small water lines, gas pipes, electrical conduit, metal plumbing pipes, and condensate lines. Pipe guides, clamps, tab tape, or other attachment hardware can be used, but are not included.
Best for: Buyers who need flexibility to cut supports to different lengths across a rooftop project. It is also a non-penetrating support approach when installed without fastening through the roof. Limitation: Cutting and sizing are required; do not assume every cut length will provide adequate support. Follow the listed six-inch minimum guidance.
Buying Guide: How To Choose Rooftop Pipe Supports
What material and support style do you need?
PVC and recycled-plastic blocks offer simple support surfaces for a range of pipe types. Rubber blocks with galvanized steel strut add a channel for securing conduit or other equipment with compatible clamps. Select the style based on the pipe arrangement and how it must be restrained, not just the material name.
How much load must each support carry?
Compare the product’s stated capacity with the expected load at each support point. The listed figures in this guide apply to the products as described; they do not establish the safe capacity of an entire rooftop system. Support spacing, pipe contents, equipment weight, attachment method, and roof conditions can affect the installation. Consult project specifications or a qualified installer when load requirements are uncertain.
Do you need pre-cut blocks or cut-to-length pieces?
Pre-cut six-inch supports can reduce measuring and cutting for layouts that use that length. Longer pieces, such as the MIRO-CG PVC supports, allow custom cuts but require sizing before installation. Check the product’s minimum-length guidance and confirm that the finished pieces are stable for the intended use.
How can you avoid roof penetrations?
Some listed supports are designed to hold rooftop pipework without fastening through the roof. Non-penetrating does not mean no attachment is needed: pipe guides, clamps, tape, or other hardware may be required, and some products state that hardware is not included. Verify the roof manufacturer’s requirements and local installation rules before placing or securing supports.
Frequently Asked Questions
Can rooftop pipe supports be used for electrical conduit?
Yes. Several products listed here identify electrical conduit as an intended use. Choose a support style and capacity that match the conduit system and planned attachment hardware.
Do these supports require holes in the roof?
The listed PVC blocks are described as non-penetrating options. The installation still needs an appropriate method to keep pipes secured, and the required hardware may be sold separately.
Are pipe clamps included with these support blocks?
Not necessarily. The product details for the PVC supports state that guides, clamps, tab tape, or other hardware are not included. Check each listing for the exact package contents.
What is the difference between a strut support and a PVC block?
A PVC block provides a support base, while a strut-equipped block includes a galvanized steel channel for securing conduit or equipment with compatible clamps. Choose based on the required mounting arrangement.
Can I cut rooftop pipe supports to fit?
The MIRO-CG pieces are designed to be cut to desired lengths, with a listed suggested minimum of six inches. Other products in this guide are sold pre-cut or as fixed-size blocks, so check their details before modifying them.