Architec 400® is the original tried and true, extra heavy duty knitted shade cloth for large commercial projects with market leading UV protection.

Available in: 3.80 x 50m straight rolls
Average weight: 400gsm

Architec 400® is the ideal shade option for schools and playgrounds, commercial areas and car parks. It is a 400gsm High Density Polyethylene (HDPE) fabric making it extremely strong and resistant to tearing. The fabric is heat set, making it easy to use as it lays flat and there is no curling or rolling up when marked out, cut or sewn.


Suitability for end use is determined by end user.






Midnight Green

Navy blue






Architec 400® is made to comply with and exceed AU standard AS4174.1994.

Please note: The actual onscreen colour may not match actual material colour exactly.

Our Gallery

Scroll through our gallery of Architec 400® images and videos to see more applications.

No Flat Tape, Maximum UVR Protection

Architec 400® contains no flat tape. It is made from a combination of monofilament yarn and our proprietary OvalonTM monofilament yarn. OvalonTM provides high strength and minimal stretch in both the weft and warp direction of the stitch pattern, maintaining tension. It also offers over 90% UVR protection. With OvalonTM you get the strength of monofilament yarns combined with the UVR protection of tape.

Built for High Tension

As with all types of shade cloth installation, shade sails using Architec 400® should be well designed and engineered to hold the fabric under the appropriate tension. The fabric should be supported by using suitable strength poles and footings, as determined by a professional engineer and made and installed by a qualified contractor in accordance with local building codes.

Easy to Work With

Architec 400® is pre-stentered to reduce shrinkage and improve the stability of the fabric. This process improves the workability of the fabric during the fabrication and installation of the shade sails or shade structure.

Architec 400® Technical Specifications


BRAND Construction ARCHITEC 400 Monofilament only
Weight (gsm) 400
Width (m) 3.8
Roll Length (m)
– Centre Folded
– Unfolded 50
Roll Diameter (cm) n/a
– Centre Folded
– Unfolded 34
Roll Weight (kg) n/a
– Centre Folded
– Unfolded 76
Freight Cubic (m3) n/a
– Centre Folded
– Unfolded 0.44
Breaking Force Warp / Weft (N) 1050 / 1600
Tear Resistance Warp / Weft (N/50mm) 300 / 280
Bursting Pressure (kPa) 4200
Bursting Force (N) 2300
Flammability Index AS 1530.2 (Range 0 low, 100 high) 18
Spread of Flame Index AS 1530.3 8
Smoke Developed Index AS 1530.3 (Range 0 low, 10 high) 5
UVR Block (%) 87.8 to 96.0
Limited Warranty 15 years

FR Results

AS/NZS 1530.2 and 1530.3 available on request.

Architec 400® 15 Year UV Warranty


This Warranty is provided specifically for the project nominated below and approved by Polyfab Australia Pty Ltd.

ARCHITEC 400® is a unique and innovative extra heavy duty knitted shade cloth designed for large commercial architectural sails and commercial shade structures.

Polyfab Australia Pty Ltd (Polyfab) warrants to the initial purchaser that the fabric will not suffer from abnormal deterioration (abnormal deterioration means deterioration exceeding 5% of the fabrics original tensile strength each concurrent year) from ultraviolet exposure for a period of 15 years from the date of installation.

If proven the fabric has deteriorated more than the specified values during the 15 year Warranty term, Polyfab will, completely at their discretion, supply replacement material (same or of equivalent specification), or contribute to the cost of an alternative fabric on the following pro-rata basis:

1-5 years 100% of original fabric purchase price
5-10 years 50% of original fabric purchase price
10-15 years 25% of original fabric purchase price
Exclusions and Product Disclaimers
This warranty does not cover, and Polyfab is not liable for, deterioration of fabric occurring due to any of the following circumstances:
• Exposure to pollution, chemicals, solvents, cleaning agents or other substances that are harmful to the performance of the fabric.
• Faulty installation of the fabric or faulty design or manufacture of any structure to which the fabric is attached.
• During installation, Polyfab shadecloth should not be subject to “pre-stressed” loading in excess of 20%.
• Wind flap is the major cause of pre-mature breakdown in any quality outdoor fabric. It is therefore critical that Architec 400® be installed firm and tight and maintained in a firm condition. Fabric that is allowed to flap and causes rubbing on structural poles and support wires is deemed to be mechanical breakdown and is not covered by the UV warranty.
• Architec 400® should be supported by using appropriate strength poles and footings as determined by a professional structural engineer, and fabricated and installed by a qualified contractor in accordance with local building codes.
• Improper use of the fabric or use contrary to the specifications for the fabric.
• Technical testing information supplied by Polyfab Australia is sourced from third party testing authorities and tolerances may vary by as much as 10%.
• Outdoor fabrics are subject to harsh conditions and degradation over time is to be expected. Architec 400® is supported with a 15 year UV warranty. During this period the fabric will remain serviceable and fit for purpose. Colour fading is normal over time. Colours containing red and yellow pigments have a tendency to fade more than others. This is not a loss of strength caused by UV breakdown and is not covered by the product warranty.
• Minor colour variation from fabric samples.
• Minor visual imperfection due to the manufacturing processes.
• The negligent act or omission of any person.
• Misuse, neglect or abuse of the fabric.

Statutory Implied Terms and Limitation
This warranty is in addition to any non-excludable terms, conditions or warranties implied under the Trade Practices Act 1974 (Cth) or similar Commonwealth or State legislation (‘Statutory Terms’).

Polyfab’s liability for breach of the Statutory Terms is limited to the maximum extent permitted by the Statutory Term or otherwise by law.
Save as expressly provided in this warranty and the statutory terms:
• All implied conditions and warranties with respect to the goods and services supplied by Polyfab including without limitation warranties as to quality, fitness for purpose and sale by sample are excluded.
• Polyfab shall not be liable for any direct, indirect or consequential loss or damage which arises out of the negligence or carelessness of Polyfab or any of its employees, servants, contractors, suppliers or agents, or which arises directly or indirectly from the use of any information, advice or recommendation of any Polyfab employee or from any alleged breach of duty in respect of any goods or services supplied by Polyfab.
• Polyfab shall not be liable for any advice given by its agents or employees in relation to the suitability for the purpose of goods supplied by Polyfab.
Claims Procedure
All claims must be in writing addressed to Polyfab Australia Pty Ltd, 7 Conifer Crescent, Dingley Village VIC 3172, and must be made within 14 days from the date upon which the defect became known.

Claims must be supported by a sample of the defective fabric together with proof of place and date of purchase of the fabric.

Care and Maintenance Instructions

Heavy duty shade cloth is an industrial textile made from High Density Polyethylene (HDPE) yarn, which has ultraviolet stabilisers and colour pigments incorporated into the structure.

HDPE is resistant to most acids and alkalis, and fungal attack. It does not absorb water, which is a significant factor in resisting staining and inhibiting mildew growth. These characteristics make HDPE ideal as a base yarn for a lightweight, strong shadecloth. However, it has only a weak resistance to halogens, such as chlorine; and halogenated hydro-carbons. It is also affected by strong oxidising agents, such as hydrogen peroxide, chlorox (bleach) and some alcohols.

Using such chemicals for cleaning should be avoided. Dirt or mildew is usually the result of contaminants caught in the interstices of the cloth, and should be easily removed using a high pressure hose, which should be used judiciously, to avoid physical damage to the yarns and thread. For stubborn stains, scrub with a brush and a weak solution of household detergent.

Careful consideration should be given to the environment in which Polyfab shade cloth is used. For example, when suspended over a swimming pool, it will be exposed to chlorine emissions and its effective life may be reduced.

The shade sail should only be installed by a company or individual that has appropriate experience and accreditation from the Specialty Textiles Association, Lightweight Structures Association of Australia, or similar body; to the design and specification of a licensed civil engineer.

It is important that the shade sail remains under adequate tension to minimise the possibility of fatigue cracking due to wind-flap. Re-tensioning will be necessary if the shade sail becomes loose and sloppy.

Download the Care & Maintenance Flyer