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Solid and economical, zinc gutters are the most classic. They can be assembled by a gasket or by welding, the most professional method.

Connect a zinc gutter chute

Difficulty: 3/4
Cost: 180 €
Time: 1 day
Equipment: metal saw,
nibbling shears, soldering iron
propane gas with failure in
copper, cord, level, meter,
hammer, screwdriver, screwdriver,
emery cloth, lime, rags,
galvanized screws, concrete anchors

The dimensioning of a gutter depends on the slope of the roof, its surface and the number of descents (according to DTU 60.11). In general, the inclination of a gutter is 5 mm / m and its developed 16, 25 or 33 cm. As for the diameter of the down pipe, it varies from 60 mm (roof <30 m2), 80 mm (30 2), or 100 to 125 mm (roof> 80 m2). The assembly of a gutter can be done either by interlocking with a seal, or by welding. Restrained here, this method is the most professional. But it involves controlling the use of a gas soldering iron: it must be avoided that the failure of the iron, easily reaching 600° C, accidentally pierces the zinc. The welding is at a good temperature when, rubbed with the ammoniacal stone, it releases a white and dense cloud.

Three-stage welding

Brazing is preceded by stripping of the areas to be welded to the emery cloth or steel wool, followed by the brushing of a stripping flux. The iron is placed at the junction of the two parts to be welded and the tin bolt applied to the tip at an angle of approximately 45°. The assembly consists in pouring the weld in big points every 1 or 2 cm (by pressing the bolt) then to smooth them during a first pass. The operation is repeated (flush flux, pointing), crushing each point to obtain a uniform and regular bead. The tip should be cleaned frequently with ammonia stone or lime. The finished weld is then rubbed with a damp cloth to remove any traces of stripper.

1 SHAPING AND BRASING THE DESCENT CONNECTION

1 SHAPING AND BRASING THE DESCENT CONNECTION

Position a heel at the end of a gutter section. Pick up the parts to be soldered (emery cloth + stripper) and weld in several passes.

Connect a zinc gutter chute: zinc

Cut out the gutter with an overlap of 1 cm for the future connection. Cut with a hacksaw or shear, avoiding distorting the hem.

Connect a zinc gutter chute: connect

Weld both sections making sure that the connection does not interfere with the direction of water flow. Strap then solder.

Connect a zinc gutter chute: zinc

Introduce the birth (or stump) of the descent to about ten cm from the end of the gutter.

Connect a zinc gutter chute: connect

With a pair of pliers, shape the collar so that it fits perfectly with the gutter.

Connect a zinc gutter chute: gutter

Position the birth and apply 2 solder points. Hold the pressure with the bolt until cool. Strip and solder.

Connect a zinc gutter chute: connect

The opening is made here, using a screwdriver and a hammer, releasing a circle of the diameter of the birth. This hole could also be done with a hole saw before welding.

Connect a zinc gutter chute: gutter

From inside the gutter, hammer the zinc to create a natural fall. Use a suitable hammer or a thick tool handle.

2 SETTING UP

2 SETTING UP

The gutter is ready to be hung on the roof: fix the end hooks so as to obtain a slope of about 5 mm / m. Connect them by a string to have the alignment of the other hooks, spaced from 40 to 50 cm.

Connect a zinc gutter chute: chute

Insert the entire gutter into the lines. Position the rear edge correctly in relation to the hooks and then tilt the gutter forward. Fold the tabs of the hooks to keep it in the final position.

Connect a zinc gutter chute: gutter

Use a pair of pliers to deflect the hook tabs. The splashguard of the gutter must be higher than the hem by at least 1 cm to guarantee the rejection of the water to the outside in case of overflow.

Connect a zinc gutter chute: zinc

The hooks must be placed in such a way that the first tile overhangs at least the first third of the gutter. Do not forget to put a thrust on the downspout to avoid plugs of plant debris.

3 INSTALLATION OF THE DESCENT

3 INSTALLATION OF THE DESCENT

The junction of descent and birth is done with two elbows and possibly a sleeve. It must remain free to uncork the pipes if necessary. Draw a vertical. Attach the half-collars and then the descent.

Connect a zinc gutter chute: gutter

Connect the lower part of the descent to the rainwater network. Check that the hoses always fit in the direction of the water drain.

Supplies
• Zinc gutters
• Hooks
• Prefabricated heels
• Birth, downpipes
• Elbows, collars
• Flux remover or acid
hydrochloric
• Welding pin 33%
tin
• Ammonia stone
(or ammoniacal)


Video Instruction: How to cut and install a gutter outlet