Why is the BILKA movable clip used in a standing seam roof?
The BILKA movable clip secures the standing seam sheet to the base while simultaneously allowing controlled longitudinal movement due to thermal expansion and contraction. The manufacturer designs it to work together with the fixed clip for proper installation of the roofing. The element remains hidden within the seam and does not pierce the visible surface like a standard screw. The direction of movement and its zone are determined according to the installation scheme of the specific roof.
Can the BILKA movable clip be used instead of all fixed clips?
The BILKA movable clip cannot replace all fixed clips. The movable type provides thermal movement, but the roofing system also requires a certain fixed zone, which is implemented with fixed clips. If all points are movable, the sheet may lack the necessary stable reference zone; if all are fixed, movement may be blocked. The number and placement of both types are determined by the panel length, slope, and design loads, not by arbitrary alternating at will.
What has been confirmed about the 25 mm size of the BILKA movable clip?
One variant with the designation 25 mm is available on Shopify. The official help page confirms the function of the movable clip but does not show a dimensional drawing or specify which part is 25 mm. Therefore, the size should not be automatically associated with any standing seam profile. Before ordering, the clip’s geometry, working stroke, and compatibility with the specific sheet are checked through factory documentation or a physical sample.
What is the SKU code of the BILKA movable clip?
The only Shopify variant is SKU LT-5585 with barcode LATLTOC53 and a recorded size of 25 mm. The product has no options for material, thickness, working stroke, or packaging quantity. These parameters should not be assumed from the image. When ordering, the code is clearly separated from the fixed clip LT-5586, and LATIVA confirms the number of units and compatible fasteners according to the standing seam roof project.
How is the spacing of the BILKA movable clips determined?
The spacing depends on the width and length of the standing seam sheets, the roof area, building height, wind load, base, and system instructions. The official overview does not publish a universal value for LT-5585, so the FAQ does not provide an arbitrary number per meter. End, corner, and peripheral zones may require different density than the middle part. A scheme from the designer or the current manual for the specific BILKA profile is necessary.
What must remain free during the installation of the BILKA movable clip?
The movable part must retain its intended stroke and not be blocked by an incorrect screw, excessive tightening, deformed seam, or contamination. The clip is placed in a straight line and closed in the fold without damaging the roofing. The exact working stroke is not published on Shopify, so the factory drawing is followed. After installation, the sheet must be stable but capable of the designed thermal longitudinal movement.
