Our Product
LEVELCORE® PrimeLock WPM
Waterproofing and Moisture Barrier + Bonding Primer
Single-component acrylic copolymer system that seals porous mineral substrates and primes them for superior adhesion. Helps control rising damp, reduces efflorescence, and resists negative hydrostatic pressure on sound, prepared surfaces.
Why it’s different: LEVELCORE PrimeLock WPM bonds tenaciously to masonry, concrete block, concrete, and stone, and is easy to apply by brush, roller, or airless spray—no mixing, no fuss.
Ideal for: Interior commercial and residential floors and walls prior to self-leveling underlayments, tile, resilient/LVT, and coatings.
Product Description
PrimeLock WPM is a ready-to-use under-tile waterproofing membrane for wet areas, forming a flexible moisture barrier beneath tiles and finishes. It’s ideal for bathrooms, kitchens, and other interior wet zones, and can also function as a bonding primer within approved build-ups where specified.
Once applied correctly, it forms a flexible, non-trafficable barrier that helps prevent surface water penetration and supports dependable protection under tiles and finishes.
Key Benefits
Sealer + Primer in one
Consolidates the surface and supports strong adhesive bond
Moisture management
Helps manage moisture, rising damp, and efflorescence on prepared substrates.
Negative-Side Resistance
Designed to resist negative-side moisture pressure
Strong adhesion
Strong adhesion to mineral substrates (masonry, concrete block, concrete, stone).
Single-component
Single-component (ready to use).
Fast application
Fast application by brush, roller, or airless spray.
High Flexibility
Extremely flexible to accommodate limited movement/vibration (refer to TDS).
Where To Use
Under-tile wet areas
Bathrooms / showers
Kitchens / worktops
Suitable over common building substrates including concrete, renders/screeds, fibre-cement sheeting, timber, wet area plasterboard, and plywood (as permitted by the system).
Important: PrimeLock WPM is non-trafficable and must be covered by tiles and finishes as specified.
Simple How-To(Undertile wet areas)
1.
Prepare the surface
Ensure the substrate is structurally sound and free of dirt, dust, laitance, grease, paint, wax, oil, and loose contaminants.
2.
New concrete
Allow to cure at least 6 weeks.
3.
Old Concrete
Clean with commercial detergent/degreaser, rinse, then allow to dry at least 24 hours.
4.
Steel trowel / power float finishes
Mechanically abrade to expose aggregate.
5.
Apply coats per system
Allow approximately 4 hours at 20° C between coats; apply a second coat to fully cover; apply a third coat if needed and ensure no pinholes.
Do not cover with tiles/finishes for at least 24 hours after the final coat (longer in poor drying conditions).
Quick Specs
Type / Base
Acrylic-based, water-based waterproofing/dampproofing/moisture barrier; ready to use (do not thin)
Colour
Grey / white.
Trafficable
Non-trafficable
Pack sizes
20kg
Typical Dry Times (at 20° C)
About 4 hours between coats; final cross-coat dry 24 hours
Temperature Limits
Do not apply above 40° C or below 5° C
Technical Downloads
PrimeLock™ WPM – Waterproofing & Moisture Barrier
PrimeLock™ WPM is a ready-to-use, water-based acrylic waterproofing membrane designed for high‑performance under‑tile waterproofing in wet areas. Once applied correctly, it forms a flexible, non‑trafficable barrier that helps prevent surface water penetration and provides dependable protection under tiles and finishes.
PrimeLock™ WPM is suitable for use over a wide range of common building substrates including concrete, renders and screeds, fibre‑cement sheeting, timber, wet area plasterboard and plywood. It is ideal for internal wet areas and can also be used in external applications such as balconies and terraces (when installed to specification).
PrimeLock™ WPM – Safety Data Sheet (SDS)
The PrimeLock™ Safety Data Sheet outlines product safety information including composition, hazards, first aid, safe handling, storage and transport.
Key points (summary):
- Recommended use: waterproofing & moisture barrier coating.
- Hazards (normal use): not expected to produce unusual hazards during normal use; high dust levels may irritate skin, eyes, nose/throat and upper respiratory tract.
- First aid: rinse eyes with water; wash skin with water; if swallowed do not induce vomiting and seek medical attention; if inhaled, move to fresh air.
- Fire: not combustible under normal storage and use.
- Handling & PPE: avoid inhaling dust; wear suitable protective clothing; use a dust mask/respirator where required; wash hands after use.
Transport: not listed as a hazardous material under common transport codes (as per SDS).
PrimeLock™ WPM – Technical Data Sheet (TDS)
PrimeLock™ WPM is a grey/white acrylic-based, non‑trafficable waterproofing, damp proofing and moisture barrier developed for under‑tile waterproofing in wet areas. It is supplied ready to use and is suitable for substrates such as concrete, renders/screeds, fibre‑cement sheets, timber, wet area plasterboard and plywood.
Features & Benefits:
- Ready-to-use membrane for direct application from the container
- Extremely flexible to accommodate limited movement and absorb vibration
- Water-based (non-hazardous and non-flammable)
- Helps prevent surface water penetration when applied correctly
VOC Emissions Test Report
Third-party laboratory results for VOC emissions/IAQ compliance evidence. Use this document for specification and project submission requirements.
Warranty Details
PrimeLock WPM can be covered under the LevelCore 10-Year System Warranty when warranty requirements are met, including:
- Installed by a LevelCore Accredited Installer
- Follow the relevant TDS strictly (prep, ambient conditions, mixing, application)
- Installation recorded with required QA documentation
- Use the full LevelCore system (mixing brands / using non-LevelCore products voids warranty)
10-Year System Warranty
QA submissions:
Submit QA forms and media within 5 working days via the Levelcore Portal or email.
Warranty contacts:
warranty@levelcore.com.au | 1800 717 398
Frequently Asked Questions
Can I apply it by spray?
Yes – it can be applied by airless spray as well as brush or roller
Does it work under self-leveling underlayments or tile?
Yes – designed to seal/prime substrates beneath SLPs and tile. Confirm compatibility in the TDS
Does this replace a separate primer step?
In many systems, yes – it can function as sealer and primer. Verify the requirements of your adhesive/underlayment system.
Is it trafficable / can it be left exposed?
No – it is non-trafficable and must be covered by the subsequent system.