Membrane roofing

Membrane Roofing Auckland

Membrane roof waterproofing for flat and low-slope roofs.

We install membrane roofing systems for flat and low-slope roofs on homes and commercial buildings across Auckland. A well-detailed membrane gives durable protection against water ingress, UV exposure and Auckland's changing weather.

  • Flat and low-slope roofs, residential and commercial
  • Viking Roofspec Licensed Installer
  • Product and workmanship warranties
Call 0800 433 987

Built around the details

Membrane roofs fail at the edges, not the middle

On a flat roof, the open field of membrane is rarely the problem. Water finds its way in at parapet cappings, internal gutters, outlets, vents and wall junctions, and that is where careful detailing matters most. Correct installation is critical to long-term performance, so our team focuses on thorough substrate preparation, accurate membrane application and careful detailing around penetrations, junctions and roof edges.

Ground Up is a Viking Roofspec Licensed Installer. Viking only allows installers who have completed, or are working through, its three-stage licensing programme to install its materials. We also install steel roofing and flashings, which helps where a membrane roof meets a pitched steel one.

Dark grey membrane on a flat roof with a vent pipe, next to a wrapped upper storey
Flat membrane roof finished around a vent, with the upper storey still wrapped.

What we do

Our membrane roofing services

Custom membrane installation

Membrane roofing installed to suit the roof design, substrate and detailing requirements, with careful attention to junctions, penetrations, edges and drainage areas.

High-performance materials

Proven membrane roofing materials selected to suit the roof type, exposure and project requirements, for durable protection against water ingress.

Replacement roofs

Where an old membrane roof has reached the end of its life, we assess the substrate and recommend the right system for the replacement.

Warranty

Systems are installed in accordance with manufacturer requirements, with product and workmanship warranties based on the system specified for each project.

MembraneCap sheet or single-ply membrane, dressed into gutters, outlets and upstands
Base layerBase sheet or underlay, where the system uses one
SubstratePlywood or concrete, laid to falls
Roof structureFraming and any insulation the design calls for
Typical membrane roof, top to bottom. Not to scale. The system specified for your roof sets the exact layers.

Sheet or liquid?

Choosing the right roof membrane

Most flat roofs suit a sheet membrane: it goes down quickly over a large open area and gives a consistent thickness. Where a roof has a lot of penetrations, plant or awkward shapes, every cut in a sheet is another lap to seal, and a liquid membrane system can be the better choice. We recommend the system that suits your roof, not the one that is easiest to install.

An existing membrane roof that is leaking does not always need replacing. Our membrane roof repairs start by finding the cause, and we will tell you if a repair will hold.

Our work

Membrane roofs we have installed

Pricing

What affects the price

  • Roof area and shape
  • Access and scaffolding
  • Removing an existing roof
  • Condition of the substrate
  • Parapets, gutters, outlets and penetrations
  • The system and warranty specified

Warranty and documentation

  • 10-year workmanship warranty on our installation
  • Product and system warranties based on the system specified
  • PS3 documentation where your project requires it

FAQs

Membrane roofing questions

What is membrane roofing?

A membrane roof is a continuous waterproof layer, laid as sheets or applied as a liquid, used on flat and low-slope roofs where the pitch is too low for most other roofing.

Can you replace an old membrane roof?

Yes. We assess the existing roof and the substrate under it, then recommend the right system for the replacement and quote for the work.

Do you do steel roofing as well?

Yes. We also install steel roofing and flashings, so where a membrane section meets a pitched steel roof, one team can do both.

Do you work on commercial roofs?

Yes. We install membrane roofing on residential and commercial buildings across Auckland.

More services

Related waterproofing services

Contact us

Contact us

Talk to Ground Up Waterproofing about the right membrane roofing system for your home or commercial building, new or replacement. We will give you a free quote.

Call 0800 433 987