Choosing the hooks and installing the gutters

One downpipe is sufficient for a roof that is up to 10 m long. Gutter hooks should be placed as in the adjacent drawing and marked 1, 2 etc. To start, install the first and last gutter hooks at a distance of 10 cm from the roof edge. In cases of lengths exceeding 10 m, two downpipes are necessary. Gutter hooks should be placed in agreement with the drawing below and marked 1–1, 2–2, etc. Gutter hook 1–1 should be installed approximately 30 cm from the center, while the last one should be approximately 10 cm from the edge of the roof. Short gutter hooks are attached directly to the fascia board. If the fascia board is not installed vertically then the gutter hook may be bent.

Gutter Hooks

In order to maintain the stability of the gutter it is necessary to install gutter hooks with a maximum spacing of 60 cm. Gutters are installed with a slope towards the downpipe. The slope should amount to 5mm/m. It is important for the gutter, at its highest point, to be approximately 25 mm below the slope line of the roof (Figure No. 1).

Compact gutter hooks should be installed using 4.2 x 30 flathead screws (with a minimum of 20 μm zinc) at spacing distances no greater than 600 mm. Long gutter hooks of flat steel should be bent appropriately to match the roof pitch (this does not apply to compact gutter hooks for mounting on the fascia board) and attached so the gutter has a slope of 5 mm for each 1 m. The gutter hooks should be numbered, after which the first and last should be attached at a distance of 100 mm from the edges of the roof (e.g. the wind beam) (Figure No. 2).

In order to install the remaining gutter hooks it is necessary to stretch a string between the first from the roof edge and the last before the collector box so as to mark the proper installation line guaranteeing an appropriate slope for gutter drainage (Figure No. 3).

Gutters

The downpipe should be installed at a properly planned point of the gutter. The outlet opening for the collection box should be cut out as in the drawing or in the shape of a circle with a diameter less than the upper inlet of the collection box funnel (Figure No. 4).

The collection box should be installed beneath the curled edge of the gutter (fold lock). The collection box should be pressed against the gutter and the locking lips bent into it (Figure No. 5).

The gutters should be laid on the inside arcs of the gutter hooks and moved to their proper position. In installing the gutters it is necessary to lightly press both edges of the upper section so that the fold lock pops into its proper position in the external end of the gutter hook (Figure No. 6).

The universal gutter plate is always applied to a factory–cut end of a gutter so that its right or left ear covers the opening of the gutter fold lock. The contact between the plate and gutter should be sealed using roofing silicone compound. The other plate ear on the side opposite the fold lock should be bent parallel to the gutter. The connection between the plate and gutter on the inner side should be sealed using roofing silicone compound (Figure No. 8).

The edge of the gutter should be visible on the outside of the gutter plate on both sides of the cutouts. It should be bent so as to secure the plate against sliding out (sealed using roofing silicone compound (Figure No. 9).

Gutter connectors are used to connect the gutters. After sliding the ends of the gutters together, the connector is applied on the rear edge of the gutter after which it is gently spread and slid in front onto the fold lock. A 2–4 mm expansion joint should be left between the gutters (Figure No. 10).