The best waterproofing in Nelson keeps water out of the places that cost the most to put right: flat roofs, walk out decks, basement walls and bathroom wet areas. Contractors handling waterproofing in Nelson install butynol, TPO and torch on membranes, tank below ground walls against groundwater, and seal showers to council standards with producer statements. Specialised Waterproofing and Pyers Services are among the Nelson and Tasman operators set out below.
1Specialised Waterproofing Ltd
Specialised Waterproofing Ltd is a membrane application business established in Nelson in 2011 and run by Martin Bennett, who has worked in membrane roofing full time since 1994. The team applies butyl rubber, TPO, torch on and liquid membranes on residential and commercial jobs, and covers Nelson, Marlborough and the West Coast. It suits owners and builders who want the membrane itself chosen and laid by a dedicated applicator rather than a general roofer.
Services
- Butyl rubber membrane for roofs, walk out decks and commercial gutters
- TPO membrane with heat welded joints for large roof areas and gutters
- Torch on reinforced modified bitumen membrane systems
- Below ground tanking using peel and stick or torch on membranes
- Liquid silicone coatings to extend the life of ageing butynol roofs
Highlights
- Established in 2011, servicing Nelson, Marlborough and the West Coast
- Martin Bennett trained and qualified in the United Kingdom through the City and Guilds apprenticeship scheme
- Assessments of existing membrane roofs before deciding between recoating and replacement
- Material selection matched to the site, including advice on hydrostatic pressure in tanking situations
Location & Contact
Name: Specialised Waterproofing Ltd
Address: Nelson
Phone: 021 185 4798
Website: specialisedwaterproofing.co.nz
2Pyers Services (2018) Limited
Pyers Services (2018) Limited runs a waterproofing department alongside its sheet metal and moulding operations from Natalie Street in Toi Toi. The team supplies and installs membrane roofing and waterproofing systems, and are approved applicators of Ardex Butynol, Weldtec and Viking Enviroclad TPO. Work ranges from domestic roofs, gutters and decks through to potable water tank liners and below ground walls.
Services
- Butynol membrane roofing for commercial and domestic roofs, gutters and decks
- Vulcanised butynol liners for water storage tanks and turf roofs
- Shelterseal 3000HD and 5000HD peel and stick membranes for below ground walls and foundations
- Viking Enviroclad TPO for low slope roofs, gutters and pond liners
- Viking Dec-K-ing PVC membrane for internal and outdoor decks
Highlights
- Approved applicators for Ardex, Viking Roofspec and Sealco systems
- Work backed by both supplier and workmanship warranties
- Ardex butynol carries a 20 year warranty when installed by certified installers to the New Zealand Building Code
- Liners manufactured as vulcanised welded sheets to almost any size and shape
- Waterproofing department reachable directly at the Toi Toi site
Location & Contact
Name: Pyers Services (2018) Limited
Address: 16 Natalie Street, Toi Toi, Nelson
Phone: 03 545 7999
Website: pyers.co.nz
3Galbraith Group
Galbraith Group began as Galbraith Plasterers in 1965 and now runs plastering, painting, brick and blocklaying, sandblasting, building and waterproofing divisions from Beatty Street in Annesbrook. The waterproofing side seals flat and near flat roofs, walk out decks, patios, car parks and below ground walls, and services the Nelson and Tasman regions. It suits projects where the waterproofing sits inside a larger cladding or construction package.
Services
- Equus Chevaline Dexx membrane waterproofing for new and existing flat or near flat roofs
- Sealing of walk out decks and patios
- Allco Volclay Voltex and Swelltite tanking
- Car park waterproofing
- Wall waterproofing and sealing systems
Highlights
- Certified applicators of the Equus Chevaline Dexx membrane system
- Certified applicators of Allco Volclay waterproofing systems, including variants for salt water and chemical exposure
- Operating in the Nelson region for more than 50 years
- Group of 40 plus staff across its trade divisions, with more than 30 apprentices trained
- Free consultation and quote across Nelson and Tasman
Location & Contact
Name: Galbraith Group
Address: 80 Beatty Street, Annesbrook, Nelson
Phone: 03 547 7500
Website: galbraithgroup.co.nz
4Tasman Tiling NZ
Tasman Tiling NZ is a tiling contractor started by Mark Shuttleworth, who began his tiling career in 2010, and it treats waterproofing as a certified part of every wet area job. The team holds waterproofing certificates for Mapei and Ardex systems and issues PS3 producer statements for council compliance. It works across Nelson, Richmond, Motueka and Golden Bay on renovations and new builds.
Services
- Council compliant wet area waterproofing using Mapei and Ardex systems
- PS3 producer statements issued for council sign off
- Bathroom, kitchen splashback and floor tiling
- Natural stone, ceramic and porcelain tiling, including swimming pools
- Full tile uplift and disposal before a new finish is laid
Highlights
- Fully accredited installers for Mapei and Ardex waterproofing systems
- Warmfloor approved installers, with a 25 year warranty on under tile heating installations
- Founded by Mark Shuttleworth, in the tiling trade since 2010
- Covers Nelson, Richmond, Motueka and Golden Bay
Location & Contact
Name: Tasman Tiling NZ
Address: Nelson
Phone: 027 433 6060
Website: tasmantiling.nz
5FNL Tiling Nelson
FNL Tiling Nelson is a tiling and bathroom renovation team led by Frazer Lochhead, working through inner and outer Nelson and the wider Tasman region. Waterproofing is handled by a qualified team that meets council requirements, and it sits alongside screeding, tiling and under tile heating on the same bathroom job. It suits homeowners who want one team to take a wet area from planning through to the finished tile.
Services
- Waterproofing carried out to council requirements
- Bathroom renovations, planning and consulting
- Wall and floor tiling, including large format and mosaic tiles
- Cement floor screeding to level a surface before tiling
- Under tile heating and cement or epoxy grouting
Highlights
- Qualified waterproofing team that meets council requirements
- More than 20 years of experience in the trade
- Tile selection help offered alongside installation
- Covers inner and outer Nelson and the Tasman region
Location & Contact
Name: FNL Tiling Nelson
Address: Nelson
Phone: 021 585 463
Website: fnltiling.co.nz
Waterproofing in Nelson at a Glance
| Business | Highlight |
|---|---|
| Specialised Waterproofing Ltd | Established in 2011, servicing Nelson, Marlborough and the West Coast |
| Pyers Services (2018) Limited | Approved applicators for Ardex, Viking Roofspec and Sealco systems |
| Galbraith Group | Certified applicators of the Equus Chevaline Dexx membrane system |
| Tasman Tiling NZ | Fully accredited installers for Mapei and Ardex waterproofing systems |
| FNL Tiling Nelson | Qualified waterproofing team that meets council requirements |
How to Choose the Right Waterproofing Contractor in Nelson
- Check the applicator is certified for the specific system being used, whether that is Ardex, Mapei, Equus, Viking or Allco, because the material warranty usually depends on it.
- Match the membrane to the job. A walk out deck needs a trafficable system, while a large low slope roof suits wide heat welded sheets.
- For a bathroom or laundry, confirm the contractor will supply a PS3 producer statement so the work can be signed off by the council.
- For below ground work, ask how the site drains and whether hydrostatic pressure is expected, since that decides between a peel and stick and a torch on membrane.
- Ask what is covered by the supplier warranty and what is covered by the contractor’s own workmanship warranty, and get both in writing with the quote.
Frequently Asked Questions About Nelson Waterproofing
How much does waterproofing in Nelson cost?
Nelson waterproofing contractors quote per project rather than publishing fixed rates, because the price turns on area, access, the substrate underneath and the membrane chosen. A small shower base is a different job from a full roof replacement with fall corrections. Ask for a written quote that separates materials, labour, surface preparation and access equipment, and get more than one so you can compare like with like.
Do I need a producer statement for bathroom waterproofing?
Wet area waterproofing forms part of the internal moisture requirements of the New Zealand Building Code, and councils commonly ask for a PS3 construction producer statement from the installer as evidence the membrane was applied to specification. If your bathroom work is part of a consented renovation, confirm at quoting stage that the contractor is certified for the system and will issue the PS3. You can read the Building Code requirements at building.govt.nz.
What is the difference between butynol, TPO and torch on membranes?
Butynol is a synthetic rubber sheet laid with contact adhesive. It can be walked on, which makes it a common choice for walk out decks and gutters, but sheet widths limit how fast it goes down on big areas. TPO comes in rolls up to around 3.6 metres wide with heat welded joints, so it covers large roofs quickly, though it is not trafficable and needs a floating timber deck or tiles on pedestals if used on a walk out area. Torch on is reinforced modified bitumen applied in layers with an open flame, valued for its finished thickness and durability.
How do I check a waterproofing contractor is properly qualified?
There is no single waterproofing register, so look at two things. First, ask which manufacturer approvals the contractor holds, since systems such as Ardex, Mapei, Equus and Viking Roofspec are only warranted when laid by an approved applicator. Second, where the work is restricted building work on a roof or exterior envelope, check the practitioner’s Licensed Building Practitioner status on the public register at lbp.govt.nz.
How long should a waterproofing membrane last?
Life expectancy depends on the system, the exposure and how well it is maintained. Manufacturer warranties on quality membrane systems commonly run to 20 years or more when the product is installed by a certified applicator to the manufacturer’s specification and the Building Code. Ultraviolet exposure, ponding water, foot traffic and overhanging trees all shorten that, which is why periodic inspection and gutter clearing matter more than most owners expect.
Which parts of Nelson and Tasman do these contractors cover?
The businesses on this page work out of central Nelson and its suburbs, including Toi Toi and Annesbrook, and travel out from there. Coverage commonly extends through Richmond, Motueka and Golden Bay, and some membrane applicators also work across Marlborough and the West Coast. If you are in Stoke, Wakefield, Mapua or further out, say so when you make contact, because travel can affect both the price and how soon a crew is available.
Can an old flat roof be repaired rather than replaced?
Often yes. An ageing butynol roof that is otherwise sound can be cleaned and overcoated with a liquid membrane such as a silicone system, which buys years of extra life without stripping the roof back. Whether that is sensible depends on how much of the existing membrane is still adhered and how bad the detailing is at upstands and penetrations, so the first step is an assessment of the roof rather than a quote over the phone.
What is tanking and when does a Nelson property need it?
Tanking is waterproofing applied to below ground surfaces, such as basement and retaining walls, garage floors and foundations, to stop groundwater pushing through concrete or blockwork. It is normally installed as the structure goes up rather than retrofitted, because the membrane belongs on the wet side of the wall. Material choice matters: peel and stick bituminous sheets suit sites with good drainage, while torch on systems are used where hydrostatic pressure is likely.
How We Chose the Best Waterproofing in Nelson
Every business in this guide was found by searching for waterproofing in Nelson, then checked against what the business publishes itself: its own website, or where it has none, its official social or booking page. Names, addresses and phone numbers come from those pages rather than a directory feed, so what you see here is what the business says about itself. We also check that each one is still trading and is actually based in or genuinely serving Nelson, rather than a national operator running a local landing page. A business we can’t confirm from its own pages is not listed.