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can be used to improve either the water containment capacity and/or the drainage efficiency of the gutter and outlets by a variety of means.
Gutter Capacities Unifold®
In ideal conditions, for built-up roof systems, given ample water capacity and sufficient access, any gutter lining system will be installed to discharge the liner tray as well as the roof itself.
In practice, however, access beyond the eaves closure/drip flashing to the internal roof structure can be extremely difficult without major roof work so it is sometimes inevitable that the gutter lining is installed "gutter side" of these flashings.
More significantly, even if access is available to the roof construction at the eaves, if there is an overwhelming need for depth improvement to the existing system due to existing gutter capacity problems, then in order to achieve this, it may be necessary to ignore the condensation discharge from the liner tray as being "the lesser of two evils". Composite roof systems are not subject to interstitial condensation problems so the depth of insulation can be readily used to increase gutter depth.
Use of roof construction depth
Composite roof example
UNIFOLD®
Built up system roof example
1. Gutter capacities can be improved on many occasions by using the roof construction depth and allowing the wings of the Unifold®
UNIFOLD® Improvements to systems may use one or more of the following methods: - to
extend to the underside of the roof sheet, installing a new eaves closure with a sealed filler above, to close the construction.
2. Gutters, particularly ones with wide sole dimensions, are rarely freely discharging. This situation can be corrected or at least improved, by cutting out and removing the existing outlet and replacing it with a Unifold® metal and membrane coned orifice.
Conversion of square shouldered spigot outlet to a coned orifice
This action will dramatically improve the drainage performance of the outlet, which will discharge more quickly and in doing so, will relieve the water containment load in the gutter.
3. Extra outlets are easily added to a Unifold® installation to greatly improve the gutter efficiency. There is, of course some internal disruption whilst pipe work is installed to serve these.
Nb: Additional outlets are provided with a blanking plate to ensure the integrity of the Unifold®
system until the connection of pipe-
D1=Existing outlet dia D0=New effective dia=1.5 LT=D0
work underneath is completed. Once the serving pipe-work is complete it is a simple matter to open the outlet and render it fully operational.
The UNIFOLD® Solution
01384 252777 Phone us
unifold@ampteam.co.uk Click on email
www.gutterliners.com Click on website
UNIFOLD® gutter lining system Improvement of Gutter and outlet capacities
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