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New Townsville home with security screens on the windows

Security screens, blinds and shutters for Townsville builders

One local team for every opening on the job

Security doors and screens, blinds and shutters, roller shutters, outdoor blinds and privacy screens for new homes in Townsville. Measured, built to order and installed by a family business that's been here for more than 30 years.

  • Made in Australia
  • Licensed Invisi-Gard dealer
  • Built to order in Townsville
  • 30+ years local
Why builders use GNB

One quote, one contact, every opening

  • One supplier for the lot

    Security screens, window furnishings and outdoor shade from one local team. One quote, one contact and one booking to manage.

  • Built to order here

    As a licensed Invisi-Gard dealer, we build security screens to order in our Townsville workshop, to the exact openings on site.

  • Fitted by the people who measured

    Our own team measures every opening and installs what we make, so there's no finger-pointing if something needs adjusting.

  • Paperwork ready

    Test standards, warranties and care guides ready for your certifier and your clients' handover pack.

For your certifier

Security screens at a glance

What the manufacturer lists for each of the security screens we supply.

Swipe the table to see all three.

FeatureInvisi-GardAlu-GardDiamond grille
Made ofWoven 316 stainless steel meshPerforated aluminium sheetAluminium grille with insect screen
Knife, pry bar and impact testsYesYesYes
Child safety on upstairs windowsYesNot listedYes
Bushfire ratingBAL-40BAL-40Not listed
WarrantyLifetime on mesh (homes), 15 years on frame7 years12 months on the screen, 5 years on the locks

From Alspec's published product information (February 2024). Diamond grille figures are for Alspec's Alu-Grille. For your certifier: the security tests are from the security screen standard (AS 5039), and child safety on upstairs windows means the building code's fall prevention rule for bedroom windows (tested to AS 5203). Ratings depend on the product being installed correctly, and requirements vary by window and storey, so always confirm with your certifier. For openings that need cyclone debris protection, see Invisi-Maxx.

How it works

From plans to handover

  1. Send the plans

    Plans or a window schedule are all we need to work through every opening and quote.

  2. Check measure

    Once the frames are in, we measure every opening on site so everything fits properly.

  3. Built to order

    Security screens are built in our Townsville workshop. Blinds and shutters are made to the measured sizes.

  4. Installed on schedule

    Tell us when the site is ready and our team fits everything.

Builders and developers

Tell us about the job

Send through the details and plans if you have them. We'll come back to you to talk through the openings and the timing.

07 4728 9554

Managing rentals instead? See screens and blinds for property managers.

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What do you need?
Questions

Good to know

Can you quote from plans?

Yes. Send your plans or window schedule and we'll work through every opening and quote from them. We check measure on site before anything is made.

Can screen frames match the window frames?

Usually, yes. Invisi-Gard frames are powder coated and come in a wide range of colours, so we can generally match them to the window frames on the job.

Can your screens stop children falling from upstairs windows?

For new homes, the building code says openable bedroom windows with a drop of 2 metres or more need protection that stops a child falling out. Alspec lists Invisi-Gard and its Alu-Grille diamond grille as tested to meet it (AS 5203). Alu-Gard isn't listed for it. Requirements depend on the window, so always confirm with your certifier.

Do you work with renovators and owner-builders?

Yes. Renovators and owner-builders are welcome. Send through what you're working on and we'll take it from there.