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Industry leading
Our sales and technical team have over 20 years’ experience working with the industry leading rainwater systems available in the UK. -
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Our aluminium, steel, cast iron, plastic & GRP rainwater systems are all sourced from the leading manufacturers in the UK to ensure they are of the highest quality.
Balcony & Terrace Drainage

Sita’s solutions for balcony and terrace drainage protect your balcony and terrace spaces from flooding and backflow – for dry areas and standard compliant drainage. Its low installation depth and high discharge volume helps even in heavy rainfall incidents. Furthermore, the installation work requires minimal intervention in the existing architectural structure.
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Available
Sita Compact Balcony Angled Roof Outlet
Compact Balcony Angled Roof Outlet, complete with Dome gate, to connect to pipe sizes 50mm & 75mm
0
From
Price
£61.17
Ex VAT£73.40 Inc VAT
Available
Sita Compact Extension Unit
Compact Extension Unit, for insulation thicknesses of 50-220mm
0
From
Price
£68.80
Ex VAT£82.56 Inc VAT
Available
Sita Compact Screw-On Flange Vertical Roof Outlet
Compact Screw-on Flange Vertical Roof Outlet, complete with Dome gate, to connect to pipe sizes 50mm & 75mm
0
From
Price
£69.98
Ex VAT£83.98 Inc VAT
Available
Sita Compact Screw-On Flange Angled Roof Outlet
Compact Screw-on Flange Angled Roof Outlet, complete with Dome gate, to connect to pipe sizes 50mm & 75mm
0
From
Price
£164.43
Ex VAT£197.32 Inc VAT
Available
Sita Compact Screw-On Flange Extension Unit
Compact Screw-on Flange Extension Unit, for insulation thicknesses of 50-220mm
0
Price
£76.12
Ex VAT£91.34 Inc VAT
Available
Sita Carport Vertical Roof Outlet
Carport Vertical Roof Outlet, complete with Dome gate, closure cap finish available in copper & zinc
0
From
Price
£103.85
Ex VAT£124.62 Inc VAT
Available
Sita Compact Balcony Outlet Grating 100x100mm (60-105mm Height)
Compact Balcony Outlet Grating, with inlet filter grille & stainless steel grate (100x100mm) to drain on two levels
0
Price
£24.30
Ex VAT£29.16 Inc VAT
Available
Sita Compact Balcony Outlet Grating 156x156mm (75-105mm Height)
Compact Balcony Outlet Grating, with inlet filter grille & aluminium grate (156x156mm) for line drainage with take in of pipes DN 50/70
0
Price
£32.78
Ex VAT£39.34 Inc VAT
Available
Sita More Height Adjustment Unit
More Height Adjustment Unit, for balcony outlet grating, height 95mm (stackable)
0
Price
£7.20
Ex VAT£8.64 Inc VAT
Available
Sita Compact Insulating Body for Rainwater Outlets
Compact Insulating Body for Rainwater Outlets, to act as thermal insulation & installation aid for the SitaCompact & Compact Screw-on Flange roof outlets
0
Price
£75.32
Ex VAT£90.38 Inc VAT
Available
Sita More Flexible Vapour Barrier Plate for Round Pipe
More Flexible Vapour Barrier Plate for Round Pipe, made of EPDM; with an adhesive flange for the flexible steamtight connection of the vapour barrier
0
From
Price
£60.63
Ex VAT£72.76 Inc VAT
Available
Sita Attika Cladding Cover Plate
Attika Cladding Cover Plate, made of stainless steel; to cover the parapet or wall opening for the SitaAttika drainage DN 50/70
0
From
Price
£29.53
Ex VAT£35.44 Inc VAT
Available
Sita Compact Flat Grate
Compact Flat Grate, made of stainless steel; with spring-loaded claws
0
Price
£38.43
Ex VAT£46.12 Inc VAT
Available
Sita Green Retaining Unit
Green Retaining Unit, made of polyurethane, for retaining the rain on the roof; height 50-220mm
0
Price
£59.98
Ex VAT£71.98 Inc VAT
Available
Sita Mini Balcony Vertical Roof Outlet
Mini Balcony Vertical Roof Outlet, made of polyurethane, thermally insulated with integrated selected connection sleeve
1
Price
£62.45
Ex VAT£74.94 Inc VAT