What is the BILKA clamp with a stud used for in a downpipe?
The clamp encircles the downpipe and secures it to the wall using a stud and appropriate anchoring. It is a pipe element, not a gutter element, so the options are 90 and 100 mm. The official BILKA guide describes the wall clamps and their anchoring with dowels, including a longer anchor for facade thermal insulation. The stud should not be fixed only in plaster or insulation; the load must be transferred to a sufficiently strong base behind the facade layer.
Which diameter clamp with stud is chosen for a BILKA pipe of 90 or 100 mm?
For a 90 mm pipe, a 90 mm clamp is used in a 125/90 system, and for a 100 mm pipe, a 100 mm clamp is used in a 150/100 system. The clamp must fit the exact diameter without deforming or allowing free movement of the pipe. Size 90 is not used for 100 mm pipes and vice versa. Before ordering, check the diameter of the existing pipe, the thickness of the facade insulation, and the required length of the stud and anchor.
What variants and SKUs are available for the downpipe clamp with stud?
There are 36 variants in Shopify: 18 each for diameters 90 and 100 mm, with matte, glossy, and "Zinc" coatings. 90 mm / Matte / RAL 8017 is SKU LT-1479, and 100 mm / Zinc is LT-1513. The same SKUs also appear in the older product "Downpipe Clamp," so the two entries look like duplicated catalog items. Before quoting, confirm that the selected code actually includes the stud and the corresponding mounting kit.
Where are the clamps with studs installed along the BILKA downpipe?
The first wall clamp is placed 150 mm below the upper bend, the last one just before the final outlet, and the distance between consecutive clamps should not exceed 2 m. Additional points may be needed at joints, direction changes, or on tall facades. The clamps are aligned vertically and should not press the pipe to deformation. After tightening, check the stability and free water flow.
How is a BILKA clamp with stud fixed on a facade with thermal insulation?
BILKA requires an anchor of appropriate length when the wall has polystyrene thermal insulation. The fastening must pass through the non-load-bearing insulation layer and reach the stable base without crushing the facade. The exact stud, dowel, and spacer depend on the insulation thickness and wall material. The Shopify variant specifies diameter, coating, and color but does not provide a universal anchor. Therefore, the fastening kit is chosen after measuring the facade layer.
Should the color of the clamp with stud match the downpipe?
For a finished look, the clamp is usually chosen with the same coating and RAL color as the pipe, but diameter and construction must match first. Shopify offers five matte and twelve glossy colors for 90 and 100 mm, as well as a "Zinc" option. Screen color is not sufficient for final matching, especially with an old system or different batch. A physical sample and the exact SKU reduce the risk of visible differences on the facade.
