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Currently available to fit the POSI base fix channels and SPIG-LITEadvanced spigots.

BalconySeal® is a revolutionary product which provides water drainage and waterproofing on most exterior POSIone, POSIglaze and SPIG-LITEadvanced installation. To the left, you can see how the drain block looks under the SPIG-LITEadvanced and POSIone and POSIglaze Base Fix. The system, as with all products, has limitations and the product works best when a rubber waterproof membrane is applied to the surface. Please contact our technical team regarding other roofing membrane types.

Most balconies and flat roofs are built with a slight pitch to encourage rainwater to drain towards the edge of the roof. In these cases, the balustrade installer needs to allow for drainage points under the channel, to avoid water pooling around the edge of it.

The BalconySeal® system works by subtly raising the channel a few millimeters above the substrate on drain blocks. Notches on the top side of the drain blocks locate into the rebates of the POSI channel and SPIG-LITEadvanced, locking it into position before the system is bolt-fixed to the substrate through each block.

The gaps between the drain blocks are your water drainage channels. The drain blocks are subsequently filled with sealant to create a fully waterproofed balustrade installation. The system works best when a rubber waterproof membrane is applied to the surface.

Key benefits

Balcony Seal® Brochure

BalconySeal® Installation Guides


Balcony Seal® Test Reports

Key benefits

Fast and easy to install

Creates water drainage points under the channel

Strong and robust

Patented design and highly cost effective waterproofing system

Places watertight seal around your bolt holes

Suitable for multiple Pure Vista channels

Case Studies

Read through these real installations for inspiration and email us if you’d like to share your work!


Balustrade use

Glass balustrade has numerous applications within domestic and commercial projects.

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