Dincel Construction remains at the forefront of innovative building construction techniques by focusing on rigorous testing of Dincel Structural Walling products to meet and exceed industry standards and Building Codes.

Since the Dincel product was developed, our engineers and consultants have continued to work closely with organisations such as the CSIRO, The University of New South Wales, UTS Engineering Workshop and other industry recognised certification authorities for the testing and certification of Dincel products in relation to fire ratings, combustibility, waterproofing, earthquakes, acoustics, toxicity and VOC testing. Dincel products are certified BEP Approved (Best Environmental Practice) on the use of PVC recycled material during manufacturing and end of life management for sustainable buildings in construction.

Dincel Compliance

Fire Compliant

Dincel has undergone extensive fire testing to demonstrate compliance with the 2019 NCC/BCA. The tests and assessments were performed by reputable NATA accredited authorities such as CSIRO and Warringtonfire.

The Dincel formwork material is comprised of certain additives which enhances fire performance. In the event of a fire, the material safely chars and intumesces (it does not form molten droplets or spread fire). The solid concrete within provides the necessary fire rating.

Internal Applications

Internal walls with linings need to comply with AS5637.1, to meet the fire hazard property requirements of the NCC (Specification C1.10 – Clause 4). In accordance with AS5637.1, Dincel carried out an AS ISO 9705 full-scale room fire test. The results are as follows:

Group Number 1
SMOGRA (Smoke Growth Rate Index) 14.0

These results demonstrate that Dincel can be used anywhere internally in a building, including underground basement walls, party walls, shafts and fire isolated stairs. Further to this, Warringtonfire have prepared an evidence of compliance report to confirm that Dincel is deemed-to-satisfy compliant (DTS) for all internal load bearing wall applications. As specified in the NCC, it is important to note that the requirement of C1.9 (Non- Combustible building elements) does not apply to load bearing internal walls.

Watch AS ISO 9705 video of Dincel test results

External Applications

Dincel performed a large-scale façade test to AS 5113/BS 8414, which determines performance under actual building fire simulation. Following this test, an independent fire engineering consultancy assessed the results and provided an Evidence of Suitability Report. The report states that the Dincel Structural Walling system complies with the NCC where a non-combustible external wall is required. Through this, Dincel demonstrates compliance as a performance solution and the use of Dincel should not require a project specific assessment for most applications.

Watch AS 5113/BS 8414 video of Dincel test results

FRL (Fire Resistance Level)

Dincel have performed a total of three AS 1530.4 tests:

AS 1530.4 – Dincel was tested by CSIRO and it was determined that an FRL of up to 240/240/240 can be achieved.

AS 1530.4 Joint Specific – Dincel was tested abutting a range of fire-rated materials such as raw concrete, AAC and plasterboard. This test demonstrates that there is no requirement to cut/remove the Dincel skin underneath the fire-rated caulking.

AS 1530.4 Penetration Specific – Dincel was tested with a range of service penetration types going through the wall. This test demonstrates that there is no requirement to cut/remove the Dincel skin underneath the fire collar for penetrations.

Through these tests, Warringtonfire and CSIRO have confirmed that the polymer webs do not melt away or negatively affect the concrete wall’s performance for FRL.

It is important to note that the FRL of a Dincel wall (or any other structural wall) for a specific project requires to be calculated and provided by the project’s structural engineer to AS 3600 or other relevant concrete codes, just like for a conventional concrete wall (keeping in mind that Dincel is simply formwork for a concrete wall). The engineer must take into account project specific variables such as wall height and wall loading.

Watch AS 1530.4 Joint Specific test results Watch AS 1530.4 Penetration Specific test results

In accordance with AS 3600, Dincel can achieve up to the following FRLs:

Dincel Profile Maximum FRL Achievable
110mm 90/90/90
155mm 180/180/180
200mm 240/240/240
275mm 240/240/240

Bushfire Attack Level (BAL)

Dincel was assessed by CSIRO with a rating of BAL-FZ and confirmed as suitable for use in bushfire conditions of up to Flame Zone (FZ), which is the most severe rating.

Non-Toxic Fumes

In Australia, the NCC currently only considers smoke quantity from a fire, not toxicity. Regardless, the Dincel polymer is manufactured without the use of heavy metal stabilisers or plasticisers. Dincel has been tested in accordance with BS 6853:1999 where it was found that the fumes generated by the burning test was well under international toxicity thresholds/limits.

Earthquake Tested

Dincel Structural Walling has been put through an extensive testing and assessment regime with the University of Technology Sydney (UTS) to determine the adequacy of the system in seismic regions. The tests include:

  • Shake table simulations
  • In-plane horizontal shear push over tests

The test results and accompanying analysis confirms the suitability of Dincel system to resist large lateral forces and resulting displacement caused by major ground motions measuring up to 9.0 on the Richter scale. The permanent polymer shell achieves this by working in conjunction with concrete and steel reinforcement to provide ductile composite action to the wall.

View supporting documentation


Dincel structural walling is a permanent formwork system which when filled with concrete will result in a structurally sound concrete wall. The concrete and steel reinforcement inside can be designed by an engineer to AS 3600, Eurocode or other relevant design codes. For design purposes, the presence of the polymer formwork is removed and the engineer designs with the remaining effective concrete thickness. This is confirmed by certification from the University of New South Wales (UNSW) and the University of Technology Sydney (UTS). Therefore, a structural engineer can design Dincel walls to meet project specific requirements in the same manner as a conventional concrete wall. Structural Engineers are encouraged to download our structural engineering manual for further information.

View supporting documentation

Acoustic Tested

Dincel has been tested at CSIRO within their reverberation chambers. Based on these test results, Day Design acoustical engineers created assessment reports which details various Dincel walling arrangements and their associated acoustic performance. Therefore, a range of Dincel wall systems are available to suit the various requirements set in the NCC.

View supporting documentation

CodeMark Certified

CodeMark is a third-party building product certification scheme that authorises the use of new and innovative products in order to facilitate compliance with the NCC (BCA). A CodeMark Certificate of Conformity is one of several options available for meeting the ‘evidence of suitability’ requirements of the BCA.

Dincel Structural Walling has been assessed and issued with a CodeMark Certificate of Conformity for Type A, B & C construction covering fire compliance for internal and external wall applications.

View supporting documentation

VOC Tested

Dincel permanent formwork is classed as a low volatile organic compound (VOC) emitting product in accordance with ASTM D1156-97. Test results demonstrated that VOC emissions were less than the recognised threshold as a newly manufactured product and below detection limit 30 days after manufacture.

Dincel Polymer Formwork VOC (mg/m²/hr)
Newly Manufactured (24 hours) 0.02 (well below Green Star limit of 0.5)
Aged (ca. 30 days) 0.01 (below detection limit, and well below Green Star limit of 0.5)
View supporting documentation


Tested and certified by CSIRO as meeting waterproofing requirements for FP1.4 and FP1.7 (NCC Volume 1) and P2.4.1 (NCC Volume 2). Dincel panels along with snap-joints when filled with concrete are certified as waterproof for up to 6m head of pressure without the need for waterproofing membranes. The following tests were undertaken by CSIRO to confirm this:

ASTM E514 - 03 Pass
AS/NZS 2904:1995 Pass
ASTM E 96/M Water vapour transmission was found to be 180 times better than the requirement for a waterproof membrane
View supporting documentation

Best Environmental Practice PVC

Dincel has been awarded the Best Environmental Practice (BEP) Approval Mark after meeting the strict Green Building Council Best Practice Guidelines for PVC. Dincel was reviewed against the following requirements:

  • Manufacture of PVC Resin
  • Manufacture and end of life management of PVC products
  • Use of PVC recyclate in PVC products

The Dincel polymer PVC is heavy metal stabiliser and plasticiser free. Due to this it is a certified non-toxic product and contains a VOCs significantly below the green star threshold. Additionally, due to Dincel’s innovative design the wall can be designed with less cement content and steel reinforcement than a conventional concrete wall, which reduces the total embodied energy and allows for more efficient end of life recycling.

View supporting documentation

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  • Fire
  • Waterproof
  • Acoustic
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Dincel - One solution for all your internal and external wall needs