Page 548 - The City and Guilds Textbook: Plumbing Book 1 for the Level 3 Apprenticeship (9189), Level 2 Technical Certificate (8202) and Level 2 Diploma (6035)
P. 548
The City & Guilds Textbook: Plumbing Book 1
Installation of PVCu gutters, step by step
1 Establish the position of the outlets.
2 Establish the high point of the gutter and fix a fascia bracket at this high point
onto the fascia board using 25 mm × no. 10 zinc-plated roundhead screws.
3 Using a plumb line, centre the outlet over the gully or drain.
4 The distance between the high point and the outlet should be measured and
a fall of 1:600 determined. Using this fall, fix the outlet at the low point on
the fascia board.
5 A line can now be strung between the high fascia bracket and the outlet. For
gutters that are to be fixed level, a spirit level should be used against the string.
Running outlet
Fascia bracket
String line
Plumb line
Gully
p Figure 8.13 Setting the gutter fall
6 Screw further fascia brackets onto the fascia board, working away from the
running outlet. The brackets should just touch the line but not distort it. Most
manufacturers recommend a distance between the fascia brackets of 1 m
(750 mm in areas that suffer heavy snowfall), but the manufacturer’s instructions
should be checked beforehand. There is no need to fix a bracket close to the
running outlet as it is secured using screws and therefore acts as a bracket.
Gutter bracket 1 m maximum
The amount of fall = 1:600 String line Fascia board
p Figure 8.14 Installing fascia brackets
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