Downspout Fastening

A strap generally wraps around the pipe and connects to the wall on either side. A bracket provides a shaped support or clamp, while a hook cradles the pipe and uses a separate securing connection. Their fit and mounting methods vary, so check the details of the selected product.

Measure the downspout’s outside diameter or both rectangular dimensions, identify whether it is plain or corrugated, and record its orientation and distance from the wall. Compare those measurements with the product drawing. When matching another manufacturer’s pipe, send measurements and photos rather than relying only on a nominal size.

Do not assume that it will. Some round strap listings cover more than one profile, while other supports are profile-specific. Confirm the listed applications and dimensions for the exact strap, bracket or hook you intend to order.

Two supports per 10-foot section is a planning reference used on several standard K&M listings. It is not a universal spacing or load requirement. The installer should confirm support quantity and placement for the product, pipe size, mounting surface, exposure and project requirements.

A hidden mount attaches behind the downspout so the front face remains clear of a wraparound band. K&M’s listed hidden mounts are installed on the wall before the pipe, with the legs fastened to its sides. Check the specified plain square or round pipe fit, width and depth.

The required clearance depends on the pipe route, wall surface, trim and chosen fastening system. Check the strap leg length or bracket dimensions against that clearance. If a standard support will not reach or align correctly, contact K&M about a custom option.

Yes. K&M can review custom dimensions, shapes, materials and finishes. Provide a sketch showing the pipe profile, outside dimensions, wall offset, attachment points and quantity, along with photos when matching existing work. Availability and fabrication details are confirmed for each request.

Options vary by style and include copper, painted aluminum, Kynar-finished aluminum and steel, and Galvalume Plus. Specialty metals may also be available. Check the selected listing or contact K&M; a material offered for a strap is not necessarily available for every bracket or hook.

Specify the same material, coating and color where possible, and compare physical samples when available. The same color name does not guarantee an exact match between different coatings, suppliers or production batches. Existing downspouts may also have weathered.

No. A copper-coated hook and a solid copper bracket have different material construction. Read the complete product description rather than choosing by color alone, especially when coordinating materials for an existing system.

No. K&M’s wood hooks do not include securing wire. Check the selected hook’s installation method and arrange compatible wire or other specified securing hardware before installation.

Included hardware varies by product. Some bracket listings specify a mounting screw, but that does not mean all necessary wall anchors or pipe fasteners are supplied. Review the listing and select any additional hardware for the mounting surface and assembly.

The wall connection must be appropriate for the specific construction and supporting material. Do not assume the same screw, anchor or drive-in hook is suitable for every surface. Have the installer identify suitable backing and the required anchorage and weatherproofing details.

Depending on the design, straps may use screws or rivets to connect to the pipe, while hooks may use securing wire and brackets may close around the pipe. Follow the selected product’s details and choose compatible hardware. The pipe connection and the wall attachment are separate parts of the installation.

Use the Submittals and Downloads page to find available strap drawings, and check the product listing for dimensions and included hardware. K&M also offers downspouts, elbows, cleanouts, tools and supplies to help coordinate the installation.

Availability depends on the style, size, material, finish and quantity. Custom parts require fabrication, and some standard options may also be made to order. Contact K&M before ordering if your project has a deadline, and allow separately for shipping or pickup preparation.