An image of bathroom waterproofing conducted by Flex A Seal in Melbourne for Blu Seven

Blu Seven residential projects

Blu Seven is a construction company that specialises in house extensions and new-build projects in Melbourne’s inner suburbs. Flex A Seal has been providing waterproofing solutions for the Blu Seven team for many years, with an ongoing association stemming from mutual respect and professionalism.

Blu Seven’s designs often require innovative waterproofing solutions which Flex A Seal delivers, providing reliable, durable and trouble-free foundations for Blu Seven’s building projects.

Flex A Seal is proud to have contributed to Blu Seven’s many successful projects. These images show some of the bathrooms, balconies and terraces we have waterproofed around Melbourne.

Terrace waterproofing work conducted at a Brighton residence in Melbourne, by Flex A Seal

Gardenvale terrace, 2009

Participating in this conversion of a three storey warehouse into the family home will remain one of our most inspiring and professionally satisfying projects of recent years.

This owner-built project represents all that is good about building and architecture. Excellent planning, accurate construction management, and competent builder’s execution allowed the Flex A Seal team to implement waterproofing in the rooftop garden where a seamless indoor/outdoor atmosphere was created.

Our effective installation of the PVC membrane system with accurate detailing and minimalist finishes has endured the test of time. The building was completed four years ago and with its west-facing exposure, this roof garden is equipped to withstand Melbourne’s frequent rainstorms and heat waves.

The construction method:

  • Timber joist with grading battens and plywood flooring over a 1 in 100 gradient.
  • Box gutters were fully timber constructed with gradient to drainage outlets.
  • The Flex A Seal PVC membrane system application was laid onto the timber substrate with continuous subsill underflashing and wall cladding rear flashing details.
  • The floating hardwood timber decking on battens rests on the Flex A Seal waterproofing membrane on protective rubber pads.
  • The swimming pool is a concrete constructed cantilevered design and was built by other contractors.

The integration of the pool structure with the roof deck and adjoining parapet wall was carried out by Flex A Seal personnel.

Pond waterproofing (tanking) conducted by Flex A Seal in a Melbourne suburb of Bulleen

Bulleen water feature, 2010

During the early stages of designing a contemporary house in Bulleen, eastern Melbourne, Ric Day Landscaping asked Flex A Seal for assistance. An organic water feature was to be the centrepiece of the entrance hall, and help was needed with functional aspects of its design.

We collaborated with Ric Day Landscaping and Level Architekture ( to determine the best solution, before our experienced tradespeople implemented the proven Flex A Seal tanking system. This low-maintenance, premium tanking surface was used to line the water feature as it provides a safe environment for fish and plant life, while its ceramic-like finish prevents unwanted moss growth.

The water feature is a great success: guests are welcomed into the home through an inviting, unusual entrance hall. A six metre high, glassed atrium roof provides light and ventilation for the pond’s inhabitants, with a ‘bamboo island’ serving as the dramatic feature. (Specialised tanking and root-containment treatment were necessary to ensure long-term integrity.)

A team of specialists was needed for this job, and Flex A Seal was fortunate to have been part of this collaboration. We continue to work with these colleagues when our expertise is required.

Balcony waterproofing project conducted by Flex A Seal in Melbourne

Armadale deck, 2012

For this minimalist design brief, our team of tradesmen used their extensive capabilities and experience. The effortless appearance of this deck required innovative design methods, including hidden drains and sensitive detailing to the glass balustrade, atrium stairwell, flush level skylight and threshold.

This deck was completed two years ago and with its southwest aspect, has since experienced plenty of extreme weather conditions without any glitches in its performance.