flatroofoutlet
Flat Roof Drainage

A comprehensive range of roof and balcony outlets for commercial, domestic and industrial applications. Compatible with most roofing materials including hot asphalt, bituminous felt and PVC roof membrane, Hunter roof outlets are designed with fast and simple installation in mind. The range comprises 82mm, 110mm and 160mm roof outlets, the Balcony Outlets with full flat grating and a box gutter outlet completes the range

  1. Unique clamping flange for a secure fix.
  2. Tough impact resistant pvc.
  3. Grilles designed for filtering.
  4. Can drain upto 512 metres square at 10.72 litres per second.
  5. Grilles easy to remove for cleaning.
  6. All sizes quoted are internal day light sizes.

Allow 14 days for delivery on these products

Roof Outlet

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Description:

Roof Outlet In grey to fit 82mm 110mm or 160mm pipe. Roof Outlet Spigot Tail for commercial or domestic applications. Suitable for use with hot asphalt, bituminous felt and PVC membranes. Simple to install.

Manufacturer:

Hunter

Dimensions:
82mm Spigot tail
110mm Spigot tail
160mm Spigot tail
110mm Solvent tail.

Box Gutter Outlet
RV491
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rv491_060411
 

Description:

Box Gutter Outlet Spigot Tail for use in Lead, Zinc or Felt box gutters. Simple to install

Manufacturer:

Hunter

Dimensions:
82mm Only

Balcony Outlet Grey

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Description:

Balcony Outlet Solv. Socket Tail for use with hot asphalt. Semi circular with rear upstand to prevent overspill to wall. Heavy duty grating

Manufacturer:

Hunter

Dimensions:

82mm or 110mm

82mm to 68mm spigot grey
R4
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Description:

82mm to 68mm spigot grey

Manufacturer:

Hunter

 

Flat Roof Installation Guide
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The roof construction should have an appropriate size hole. To give support to the sloping sides of the roof outlet, the roof screed should be dished. All roof outlets must be securely fixed to the roof structure. The roof outlet should be vertical with a sound push-fit connection into the rainwater pipe.

Installation Procedures

Hot Asphalt
• Remove grating and clamping ring. Hot asphalt is then applied to the roof in layers.
• The first layer should not be allowed to flow into the roof outlet.
• The clamping ring is now secured by the brass wing nuts down onto the hot asphalt.
• Although the outlet flange will soften from the effect of the hot asphalt, there will be no distortion providing the correct support is given fix the grating with the bolts.

Bituminous Felt Roofing
• Set the flange on the roof outlet into a recess in the roof boarding to give a level finish
• When applying the liquid bitumen to the roof, allow it to cover the outlet flange and the sloping part of the outlet
• Then, when bonding the felt onto the roof with the liquid bitumen, the felt should be taken over the outlet top flange
• Cut the section of felt over the hole of the outlet
• Using a blow lamp, form the felt down onto the sloping edge and retain with the clamping ring and wing nuts, fit the grating

PVC Roofing
• Apply recommended adhesive to flange and sloping part of the outlet
• Lay plastic material into flange and dress into outlet
• Retain with clamping ring and wing nuts
• Fix grating into position with bolts.

Tips & Hints
It may be necessary to provide a working overflow pipe on flat roof drain installations to indicate blockages in internal rainwater systems.

 

 Outlet and pipe Size 8smm  110mm 160mm  
 Max Depth of flow at edge of outlet  m2  m2 m2 
 35mm 310  3850  515 
 32mm  210  330  440
 25mm  145  230  310
 19mm  115  150  200
 13mm  80  85  95

Maximum roof area that can be drained by one outlet (with or without box gutter)
Note: These values are based upon; Rainfall intensity of 75mm per hour and absence of abutting vertical walls rising above roof level NB. Reduce the above figures by 20% when using balcony outlets.

Flat Roof Stainless Steel Railings
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Flat Roof railings 
 

A range of roof stainless steel railings which enable the specifier to incorporate a design feature which is truly beneficial to the character and environment of the building. Available in four colours with optional lights a simple strong and versatile steel railings system built with stainless steel posts and aluminium rails for a maintenance free finish.

 

 
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Telephone Orders

We are happy to take your order or enquiry by phone

Please call us on 0117 971 9922

We are open 8am - 6pm Monday to Friday & Saturdays 8am - 12pm

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