System Description
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RHEINZINK Gutter System to provide protection against the penetration of moisture through exterior or basement walls.
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RHEINZINK Gutter System consisting of rain gutter, accessories and connecting rainwater downpipe
To prevent water from leaking into exterior or basement walls, the rainwater running off the roof should be drained via a RHEINZINK Gutter System. As a rule, the RHEINZINK Gutter System consists of gutters and downspouts which lead the rainwater into a municipal drainage system.
The drainage system should take into account the overall design - from the rainwater intake area to gutters, downpipes and run-offs.
Fastening
- Fastening the gutters with specially prepared brackets
- Alternative: RHEINZINK-snap-lock bracket system
- Connecting the individual gutter lengths by soldering or gluing
- Fastening the rainwater downpipe with downspout straps
- Alternatives: RHEINZINK-Hidden Downspout Hanger
Gutters are fastened by brackets which are attached either to the fascia board, the rafters (sidways, if necessary) or the wall.
The RHEINZINK-snap-lock bracket system is an innovation for a traditional fastening technique. The system is characterized by quick installation, which can be done without cutting off the gutter bracket.
As a rule, rainwater downpipes are attached to the façade with traditional downspout straps, without impeding thermal expansion of the downpipe due to changes in temperature. Thus, the distance of the downspout straps, for downspouts of nominal size = 4" (100 mm) can be up to 10' (3.0 m).
Compared to conventional downspout straps, the RHEINZINK-Hidden Downspout Hanger is almost invisible.
Expansion elements
- Expansion spacings should be installed according to nominal size.
In order to ensure the thermal expansion of RHEINZINK-gutters due to changes in temperature, the following maximum dilatation-free lengths apply:
| Type of gutter |
Nominal size of expansion elements |
max. distance - Ft. (m) |
| Half-round and box-type Roof gutters |
19.7 |
49' (15 m) |
| Half-round and box-type Built-in Seam gutters |
15.7 |
29' (9 m) |
| Custom-made shapes |
19.7 |
19' (6 m) |
Table: Expansion spacings for exterior gutters
Half of the expansion-free value must be kept for corners and ends, i.e. of fixed points in the gutter.
RHEINZINK-eavestrough expansion elements are specifically suited to accommodate expansion. These can be installed in the water level as prefabricated components.
Lengthwise Pitch
- Horizontal gutter installation is possible.
RHEINZINK- Factory Recommendations recommend level installation for aesthetic reasons. However, a self-cleaning effect only occurs at a pitch of 1/16" per foot. Stagnant water in the gutters does not lead to any recognizable disadvantage and represents no defect.
Crosswise Pitch
- A pitch across the eavestrough is not required.
- The rise of the rear edge of the gutter should be between 1/4" - 3/4" (8 mm - 20 mm).
A pitch across the gutter is not required. However, the rear wall should be higher to ensure that water will not penetrate the roof structure, in the event of a water back-up.
Roof gutter
- Lengthwise Pitch 1/16" per 1'
- Roof pitch ≥15°
Since it drains to the outside, the roof gutter is considered part of the exterior drainage system. It is installed on the roof membrane with a recommended minimum slope of 1/16" per foot. The banking to the roof side of the roof gutter over the front gutter beading must be guaranteed to be at least 3/8" (10 mm). Therefore, pitch should not fall below 15° in order to avoid cutting the gutter more than 1000 mm.
Gutter on top of the Fascia
- Technical requirements for exterior drainage must be followed
The only difference between the gutter on top of the fascia and the bracket-mounted gutter is the additional installation of a fascia coping. However, from a technical point of view, it should be regarded as completely separate from the gutter. If RHEINZINK-roof drainage accessories cannot be installed, these must be made by hand.
The fascia coping can be positioned with continuous cleats or glued onto a full-surface substructure. The minimum lateral slope of the coping should not fall below 3° in order to avoid standing water.
Gutter behind the Built-in Fascia
- Exterior and interior construction possible
The moment the gutter behind the fascia cannot drain towards the outside, it is considered to be an interior eavestrough.
If the width of the fascia is less than 2" (50 mm), the gutter which lies behind the fascia, can be made in one piece, therefore as an exterior eavestrough. The crafted box gutter can either be inserted into gutter brackets fabricated specifically for this purpose or else into a full-surface wooden construction.
If the width of the fascia is greater than 2" (50 mm), the gutter must be made in two parts.
Requirements for thermal linear expansion must also be considered here. As a rule, the RHEINZINK-roof drainage program has the appropriate products available.
