10-year workmanship warranty
Confidence in the work, with your warranty terms confirmed in writing.
Specialist waterproofing · Auckland
Waterproofing Auckland homes & commercial sites
Stop recurring leaks. Protect your property. From damp basements to commercial tanking, get the preparation, repairs and waterproofing handled by one team.
A clear quote. No obligation to proceed.
10-year workmanship warrantyWork backed. Terms confirmed in your quote.
$5m public liability insuranceInsured for peace of mind.
100% money-back guarantee*If we cannot resolve the waterproofing issue. Only where included in your written quote; conditions apply.
01Site assessed before quoting
The method is selected around the moisture path, substrate and access.
02Site Safe approved
Experienced across occupied properties and live commercial environments.
03Relevant project proof
Residential internal waterproofing and Auckland commercial tanking work.
Confidence before you commit
Work backed. Peace of mind.
Workmanship backed. Insurance in place. Clear terms before work begins.
$5m public liability insurance
Added reassurance for your project. Policy documents available on request.
100% money-back guarantee*
If we cannot resolve the waterproofing issue. Available only where included in your written quote.
*Money-back guarantee applies only where expressly included in BlastOff’s written quote. If we cannot resolve the waterproofing issue, the agreed scope and guarantee conditions apply. BlastOff will set out the applicable terms in your quote before work proceeds.
Warranty, guarantee & insurance details
Money-back guarantee
The 100% money-back guarantee is available only where expressly included in your written quote. It applies if we cannot resolve the waterproofing issue, subject to the agreed scope and guarantee conditions. BlastOff will set out the project-specific terms in the quote before work proceeds.
Warranty & project records
These are standard terms, assessed job by job unless otherwise stated in the quote. Work is photographed at key inspection stages and registered for warranty records. The warranty certificate is issued after final payment; the supplied terms state that the warranty is void while arrears remain.
The 50-year B2 durability requirement for exterior below-ground tanking is subject to manufacturer specifications. It is a durability requirement, not a 50-year workmanship warranty.
Insurance cover
- Public liability: $5,000,000; an increase up to $20,000,000 can be arranged if needed.
- Product liability: $5,000,000.
- Statutory liability: $1,000,000.
- Motor vehicle legal liability: $10,000,000.
- Employers liability: $1,000,000.
Full policy documents are available on request. Confirm project-specific cover and any increased limits before work starts.
Find your project
What needs waterproofing?
Choose the route closest to your property. If you are unsure, send photos and the team can help identify the next step.
01
Home & property
Damp walls, leaking lower levels or below-ground moisture
Practical options for homeowners, landlords and property managers dealing with repeated dampness or failed finishes.
- Internal block walls, garages, rumpus rooms and cellars
- Basements, foundations and exterior below-ground walls
- Retaining walls and subfloor moisture
- Balconies, decks and wet areas where the scope applies
02
Commercial & construction
Tanking, membranes and remedial waterproofing for demanding sites
Systems selected around specifications, substrate condition, access, programme and water exposure.
- Below-ground structures and foundation walls
- Retaining walls, lift pits, water tanks and plant rooms
- Decks, podiums, balconies and planter boxes
- Commercial substrate preparation and defect repairs
Commercial capability
The right protection.
Where you need it.
Below-ground waterproofing
Basements, foundations, retaining walls, lift pits and below-ground structures.
Membranes & tankingDecks, roofs & podiums
Commercial decks, balconies, roof areas and exposed surfaces.
Exposed-surface protectionTanks, plant rooms & wet areas
Water tanks, service spaces and internal areas exposed to moisture.
Wall-to-floor junctionsLeak repairs & remediation
Failed membranes, cracks, leaking structures and ageing systems.
Crack & joint repairsMasonry & concrete
Concrete, block and masonry affected by damp or water penetration.
Protective coatingsHave plans or a scope?
Talk through the site, access and programme with our team.
Discuss your project →Membrane installation · Crack and joint sealing · Leak investigation · Protective waterproof coatings
Residential flagship project · Glenfield
A lasting fix for persistently damp internal walls
A managed rental needed more than another coat of paint. BlastOff exposed the substrate, repaired the defects and built a continuous internal waterproofing system through vulnerable corners and junctions.
The challenge
Persistently damp internal walls, ongoing tenant complaints and wall and floor finishes that kept failing.
The approach
Walls and floor were ground to bare substrate. Cracks were cut out and repaired with cement epoxy before waterproofing.
The outcome
Four membrane coats formed one continuous system. The rooms are now dry and the maintenance ticket was closed.
“Reliable, hardworking, and committed to quality. It’s refreshing to work with a contractor who genuinely cares about customer satisfaction.”Discuss a similar project
Waterproofing feedback
“We engaged with BlastOff for internal and external waterproofing after no-one could find our leak. Damian and his team found the leak and solved a long ongoing issue in our home. Great experience from start to finish.”Ariel Cotton
The BlastOff difference
The waterproofing system is only as reliable as the surface underneath it.
BlastOff can manage more of the journey from assessment and preparation through repairs and protection. The exact method depends on the site—every job does not require excavation, blasting, injection or the same membrane.
- 01Assess
Review symptoms, construction, access and likely moisture paths.
- 02Prepare
Remove failed material and create a sound surface where required.
- 03Repair
Address cracks, junctions and defects before waterproofing.
- 04Waterproof
Apply the selected membrane or cementitious system.
- 05Protect
Add drainage, protection or finishes required by the scope.
Two common waterproofing paths
The method should match the moisture problem
These are typical sequences. The quoted scope is confirmed after the site is assessed.
Positive-face protection
Exterior below-ground waterproofing
- 01Expose the wall to the required depth
- 02Prepare and prime the substrate
- 03Apply the specified membrane system
- 04Install protection and subsoil drainage
- 05Backfill and reinstate the affected area
Internal remediation
Internal wall waterproofing
- 01Remove failed coatings with dust extraction
- 02Expose and repair cracks and weak points
- 03Inject structural cracks where required
- 04Patch and fair the wall surface
- 05Apply the selected system through junctions
Commercial waterproofing work
See the work.
Understand the difference.
Three Auckland projects. Preparation, waterproofing and protection brought together in one scope. Use the arrows or swipe through each gallery.
Auckland Council · Kingsland
Nixon Park
Water entering below ground needed a connected membrane and drainage solution.
How we solved it
Prepare: Remove failed coatings from the blockwork and floor.
Protect: Install torch-applied tanking with NOVAFLO drainage to carry groundwater away.
Result: A continuous barrier supported by drainage, delivered as one scope.
Green by Nature · Point Chevalier
Eric Armishaw Park
Daily washdown and moisture had worn down protection at this public toilet block.
How we solved it
Prepare: Strip compromised coatings from walls and floor.
Protect: Apply waterproofing across both surfaces, including their junctions.
Result: Continuous moisture protection for a working public amenity.
Green by Nature · Te Atatū South
Lloyd Morgan Park
Layers of paint had hidden a recurring moisture problem instead of fixing it.
How we solved it
Prepare: Remove the built-up paint and expose sound surfaces.
Protect: Waterproof the walls, floor and connecting junctions.
Result: Better protection for the building and its internal finishes during regular cleaning.
Technical confidence
Clear scope. Suitable system. Documented work.
Know what is being installed, why it suits your property, and what records you will receive at handover.
Systems
4mm SBS torch-on, cementitious and crystalline systems, liquid-applied and sheet membranes, wet-area membranes where specified.
Site conditions
Occupied homes, managed rentals, live commercial sites, constrained access and below-ground structures.
Quality & documentation
Substrate preparation, moisture assessment, film-thickness checks where relevant, manufacturer information and PS3 where required.
Relevant standards
NZBC B2 and E2 requirements and AS/NZS 4858 are considered where they apply to the project and selected system.
A practical team with hands-on experience
One team from substrate condition to protection
BlastOff Solutions works across waterproofing, concrete remediation, crack repairs, surface preparation and protective coatings. That combined capability helps the team scope what sits beneath the membrane—not just what goes on top.
Talk through your site →From the people we work with
Confidence starts
with real feedback.
Read feedback from BlastOff customers across our services, alongside the waterproofing projects shown above.
They are dependable, knowledgeable, and consistently deliver high-quality workmanship on time and within budget.
Green by Nature — Grounds and asset maintenanceMore reviews from our customers
Live feedback across BlastOff’s services, direct from our review profile.
Ready to talk about your property?
Get my no-obligation quoteQuestions before you quote?
Useful answers for planning the next step
Every property is different. These answers explain the typical decision points without promising one system for every site.
Call 09 583 2429Do I need internal waterproofing or exterior tanking?
It depends on where water is entering, the wall construction, access and the pressure acting on the structure. Exterior tanking stops water at the positive face when access is practical. Internal systems may suit some existing basements and block walls. BlastOff assesses the site before recommending a method.
Does the existing coating need to be removed?
Failed paint or membrane normally needs to be removed so the substrate and hidden defects can be assessed. For internal work, BlastOff can grind coatings back with dust extraction, then repair cracks and prepare the wall for the selected system.
How do you work out where the water is getting in?
The team reviews the visible symptoms, wall and floor junctions, cracks, coatings, surrounding ground and drainage, then selects further preparation or testing where required. The recommended scope is based on the likely moisture path and site conditions.
Can the home or building stay in use?
Often, work can be staged around occupied homes or operating sites. Access, dust control, noise, excavation and service impacts are discussed before work starts so the programme can be planned around the property.
How long does waterproofing take?
Time depends on the affected area, access, substrate condition, repair work, curing times and the specified system. BlastOff provides a project-specific programme after assessing the site.
What affects the price?
The main factors are the size and depth of the affected area, access, preparation and repairs, drainage requirements, the selected waterproofing system and any reinstatement. A site-specific scope avoids pricing the wrong solution.
What warranty and documentation will I receive?
Standard terms include a 10-year workmanship warranty, 10 years for internal waterproofing and external below-ground tanking. Terms are job-specific unless otherwise stated in the quote. Key inspection stages are photographed. The certificate is issued after final payment, and the supplied terms state that the warranty is void while arrears remain. Manufacturer specifications and any PS3 requirements are confirmed for your project.
What should I send for an initial assessment?
Send the Auckland suburb or project location, where moisture appears, how long it has been happening, access constraints and a few clear photos. Commercial enquiries can also include plans, specifications or the relevant scope.
Ready to find the right next step?
A drier property starts
with one conversation.
Tell us what needs attention. Get a clear scope, the right system and the warranty terms for your job.