ACTFLEX 989 CWP 18 kg two-part kit: Part A liquid pail and Part B powder

ACTFLEX 989 CWP High-Performance Cementitious Membrane

Class III membrane for bathrooms, balconies and pools. Two coats, 1.2 mm dry, recoat in 4–6 hours, then tile straight onto it with ACTFLEX BIOSET from 6–8 hours. Tested together as one system.

Where to use
Bathrooms & showersBalconies & podiumsPlanter boxesPools, under tileRetaining walls, positive sideUnder screed or paversPVC panels
IIIClassBoth standards
6–8hTo tile
≈8m²Per 18 kg kit
4g/LVOC, certified
$220.00
In stock, ready to dispatch
Per 18 kg kit (Part A + Part B), inc. GST. Not sure how many? Use the calculator.
18 kg · about 8 m² at 1.2 mm
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Frequently bought together

Total
10-year FORSPEC warrantyExpert advice: (02) 8021 3517Fast delivery Australia wideTDS, SDS and test reports one tap away
Explainer video · with voice-over

The full 989 shower job, step by step

Every step from bare slab to tiles, then the pull-off test that proves BIOSET holds to the membrane. Press play with sound.

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989 on the roller

Rolls on smooth. Two coats, done.

Mixed by drill and paddle, brushed into the corners, then rolled across the field. The second coat goes on the opposite way for an even 1.2 mm.

  • 0.92 mm wet per coat, recoat in 4–6 hours
  • Applies to cured, surface-dry damp substrates
  • Tile straight onto it with ACTFLEX BIOSET from 6–8 hours

From our Instagram. Sound on.

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Kit calculator

How many kits do you need?

System
m²
m²
Allow for detailing

One 18 kg kit covers about 8 m² at 1.2 mm over 2 coats, or about 6.4 m² at 1.5 mm over 3 coats (TDS R2). Add 10% for tape, collars and laps.

Your build-up · wet areas & balconies· pools & below grade
23Coats
1.2 mm1.5 mmDry film
4–6 h24 hRecoat
6–8 h10 daysTile fromBefore filling
Big job? Send us the plans and we'll do the take-off →
8 m²WALLS 4 m² FLOOR 1.2 mm dry 2 COATS OF 989 SLAB · EP250
0 m²to waterproof (0 kits of 989)
Area + detailing0 m²
Weight0 kg
Membrane cost$0
Per kit here8 m²
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Build your kit

Everything for a wet area, in one go

Your kits from the calculator are already in. Tick the primer, detailing, tools and tile adhesive and add it all at once. Everything here is part of the tested FORSPEC system.

The membrane

Your system
Prime
Corners, joints & penetrations
Mix & apply
Finish
Skills
Which membrane

989, 988 or 906?

All three are FORSPEC membranes. 989 is the workhorse for wet areas you're tiling fast. 988 is for water pressure. 906 is the single-pack option.

ACTFLEX 989 CWPOur pick for tiled wet areasACTFLEX 988 CWPBelow ground and water pressureACTFLEX 906 WPUSingle-pack polyurethane
Classifi­cationClass III, both standardsClass II, both standardsClass III, both standards
TypeTwo-part cementi­tious acrylicTwo-part cementi­tious acrylicSingle-pack water-based PU
Tile over from6–8 hAfter full cure24 h
BIOSET tested together (13007.5)Yes · 568-2—Yes · 569-2
Negative side / hydro­staticNoYes · 350 kPaNo
Damp sub­stratesCured, surface-​dry dampYesSee TDS
PVC panels0.53 MPa, no primer1.44 MPaSee TDS
Kit18 kg · ≈8 m²20 kg · ≈8–10 m²20 kg
Price$220$220$170
View 988View 906
The compatibility chain

One system.
One warranty.

  • ✓
    Everything tested togetherBIOSET bonded to 989 and tested as one system to AS ISO 13007.5, by NATA-accredited XTecGen.
  • ✓
    Everything worksEvery test passed: adhesion, heat aged, lime water, waterproof and crack bridging.
  • ✓
    Everything laid as onePrimer, membrane, adhesive and tile from one maker, under one 10-year FORSPEC warranty.

Why it matters: a membrane that passes on its own and an adhesive that passes on its own have never been proven together. Change one link and the chain is untested. Here's every layer, and the test behind it.

TileBedded into BIOSET
The finish
Tested together · AS ISO 13007.5 · 0.82 N/mm² · Report 568-2
ACTFLEX BIOSETAS ISO 13007.2 · 2.194 N/mm² initial adhesion, 3.27 mm deformation
C2 + S1 · Report 571-2
ACTFLEX 989 CWPAS/NZS 4858: 345%, 1.52 MPa · AS 4654.1: 394%, 1.23 MPa · VOC 4 g/L
Class III · 374-7 + 374-5
ACTFLEX EP250 primerOne coat on concrete, two if it's damp
Part of the system
SlabSound, cured, falls 1:80–1:50 to the waste
AS 3740
One FORSPEC warranty · 10 years · the whole build-up
Download the test reportsPDF568-2 · 989 + BIOSET systemPDF374-7 · AS/NZS 4858PDF374-5 · AS 4654.1PDF571-2 · BIOSET C2 S1PDFVOC 4 g/L
989 + BIOSET tensile adhesion (N/mm²)00.250.751.00.5MIN0.820.860.63InitialHeat agedLime waterAS ISO 13007.5 · XTecGen Report 568-2 · NATA accredited
1.87 gWater through the system. Limit 20 g
0.89 mmCrack bridging. Needs 0.75 mm
AdhesiveWhere it broke. The 989 bond held

How a pull-off test works

  1. The lab applies 989 to a concrete test slab at the certified build and lets it cure.
  2. Tiles are fixed onto the membrane with BIOSET, the same way you'd fix them on site.
  3. After curing, sets are conditioned: standard, heat aged, and soaked in lime water.
  4. A steel pull-head is bonded to each tile and pulled straight up until something breaks.
  5. Force ÷ tile area = N/mm². The standard needs at least 0.5. 989 + BIOSET got 0.82.
Cure times & next trade

Two coats today, tiles on tomorrow

4–6 hRecoatSecond coat, the opposite direction
6–8 hTile & foot trafficBIOSET straight onto the membrane
48 hFlood testA 24-hour flood test, from 48 hours
5 daysCovered byTile, screed or pavers within 5 days

At 25 °C, 50% RH. Full cure 72 h at 1.2 mm. Confined underground areas: 24 h between coats. Pools: at least 10 days before filling.

AS 3740 · AS ISO 13007 · the rules

What the standards ask for, in plain English

  • AS 3740:2021 calls up AS/NZS 4858 for internal wet-area membranes, and expects every material in the system to be compatible with the next.
  • When tiles go straight onto the membrane, the adhesive has to be compatible with that membrane. The proof is an AS ISO 13007.5 system test.
  • AS ISO 13007.5 needs at least 0.5 N/mm² tensile adhesion, before and after ageing, plus water impermeability and crack bridging.
  • AS 4654.1 covers external above-ground membranes: balconies, podiums, planters and non-exposed roofs.
  • Falls: 1:80 to 1:50 to floor wastes inside (AS 3740:2021, NCC Housing Provisions 10.2.12). At least 1:100 outside (AS 4654.2).
Use a different tile adhesive and that link in the chain is untested. The TDS asks for AS ISO 13007 compliance and written FORSPEC compatibility confirmation for any other adhesive.

On the video: from the TWS Podcast, how big a fillet needs to be and why it is part of the system. Need help with the build-up? Call (02) 8021 3517.

Video tutorial · YouTube

Mix it, roll it, tile it. The full 989 install.

Watch the full ACTFLEX 989 CWP tutorial: mixing Part A and Part B, detailing the corners, two coats in opposite directions, then tiling straight onto the membrane with ACTFLEX BIOSET.

  • Two coats, 1.2 mm dry. Recoat in 4 to 6 hours.
  • Tile from 6 to 8 hours after the last coat.
  • No primer, slip layer or bonding agent over the membrane.
Build the kit
On site

On the job, and from Rob

A 42-bathroom job, the junction detail, the stretch test, and Rob from our training floor on the mistakes that cost you. Tap to play, sound on.

On site · JN Waterproofing

42 wet areas. 989 on the floors and 906 on the walls, both Class III. Across 42 bathrooms, recoat time sets the whole program.

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Rob · Too thick

Why piling membrane on thicker than the spec doesn't make it better.

Train with Rob
Rob · Not a bond breaker

Joint band versus bond breaker, and why they're not the same thing.

Train with Rob
Detailing · wall-to-floor

Non-sag, high-build 989 at the junction, with the reinforcing tape bedded into the wet coat and sealed in with the second.

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Stretch test

A cured strip of 989 pulled by hand. Certified 345% elongation (AS/NZS 4858).

See the tests
Split kit demo · filmed at the TWS warehouse

This is how you mix it

  1. Part A liquid in first. Factory-weighed at 1 : 1.2, so use the full kit.
  2. Add the Part B powder in two lots.
  3. Drill and paddle until it's lump-free. Scrape down the sides.
  4. Stand 3–4 minutes, then re-mix for 1.

Never mix by hand. Never add water.

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Reviews

What applicators say

★★★★★

“All the products are fantastic that we have used so far.”

Jake Bradford · Verified buyer · 30 Oct 2026 · ACTFLEX 989 CWP

“Forty two wet areas is where recoat time starts to matter.”

JN Waterproofing · 989 floors, 906 walls · Forspec on Instagram, 15 Sep 2026 · Watch the reel
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FORSPEC Training Centre

One day on the rigs.
Every bathroom after, right.

Selling fast
1 full day · hands-on, real rigs · max 11

Practical Waterproofing Course

A full bathroom, start to finish, on a real rig. Moisture check, primer, bond breakers, membrane at the right thickness, flanges sealed. We show you, then you do it.

$214See course
Best seller
1 day · theory + demonstration · max 20

All Things Waterproofing

What the rules actually say, in plain English: AS 3740, AS 4654, where jobs fail inspection, and what NCC 2025 changes for balconies.

$107See course
Substrates & moistureMoisture readings, substrate types, when it is too wet to start.
Bond breakers & filletsBandage, liquid and hybrid bond breakers. Fillet sizing and placement.
PrimingMatching the primer to the substrate and the membrane.
Membrane applicationMixing two-part products, coverage rates and wet film thickness.
Penetrations & wastesPuddle flanges, floor wastes, tap collars and waterstop angles.
Inspection & testingWhat certifiers look for, and flood testing.
What goes on top

Tile it, screed it or pave it

989 isn't a stand-alone exposed membrane. Cover it within 5 days with one of these.

Need a specification, or help with a project?Send us the job details and the FORSPEC team will come back to you.Get project help →
Questions

Before you buy

Can I tile straight onto 989?

Yes. From 6 to 8 hours after the final coat, fix tiles directly to the membrane with ACTFLEX BIOSET. No primer, slip layer or bonding agent. That combination is tested together to AS ISO 13007.5 (Report 568-2).

Can I use a different tile adhesive?

Only an adhesive that complies with AS ISO 13007, and with written FORSPEC compatibility confirmation. BIOSET is the adhesive with the system test behind it.

How many kits do I need?

One 18 kg kit covers about 8 m² at 1.2 mm over 2 coats, or about 6.4 m² at 1.5 mm over 3 coats. Allow extra for wastage and detailing. Use the calculator in Build your kit.

Do I need a primer?

On concrete and masonry, one coat of ACTFLEX EP250 (two coats if the slab is over 80% RH). Inside on porous surfaces you can use ACTFLEX 200. Abraded PVC panels need no primer.

Can it go on a damp slab?

It applies to cured, surface-dry damp substrates. No standing water and no active leaks.

Can it be left exposed?

No. 989 isn't a stand-alone UV-exposed or trafficable membrane. Cover it with tile, screed or pavers. Under open pedestal pavers, topcoat with ACTFLEX 101 UV at 0.6 mm DFT.

Not sure it's right for your job?

Call our team on (02) 8021 3517. We'll tell you the membrane, primer and detailing to use.

Two coats today. Tiles on tomorrow.

ACTFLEX 989 CWP · $220 · In stock

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