How to install furring channel wall?

[Renovator_001]

Hi there,

First of all, thank you for this amazing resource. I have a couple of questions about furring channel installation to an existing concrete block wall.

1. What is the difference between a furring channel, which requires a fixing clip, and a top hat channel, which can be direct fixed?

2. Some references I've looked at have the furring channels installed vertically, while others have a additional channels running horizontally above and below (ie Villaboard Installation Guide page 10). I can't find any clear instructions on the layout for installation other than spacing requirements. Does this differ based on the type of sheeting used i.e. Gyprock Aquachek 10mm?

Thank you

[MitchellMc]

Welcome to the Bunnings Workshop community @Renovator_001. It's a pleasure to have you join us, and many thanks for your question about furring channels.

I’m glad you’re finding the resource useful. A furring channel is usually installed using fixing clips that attach to the wall or ceiling, creating a small cavity between the wall and the channel. This cavity allows for services like wiring or plumbing, as well as helping to reduce moisture transfer or accommodate minor wall irregularities. They can also be mounted with adjustable clips on less-than-straight walls. A top hat channel, on the other hand, can often be direct-fixed to the substrate without clips. Top hat channels are generally stiffer and are used when you want a more rigid frame or when the wall is reasonably straight and doesn’t need the small cavity provided by clips. You'll most often see them used for exterior cladding.

The orientation and arrangement of furring channels can vary depending on the type of sheeting and the finished wall requirement. For most plasterboard, such as Gyprock Aquachek 10 mm, furring channels are typically installed vertically, and the sheeting is fixed horizontally. Some guides, such as the Villaboard installation instructions, show horizontal channels at the top, bottom and mid-section in addition to vertical furring channels. These are often used to provide a continuous fixing edge for the sheets and to stiffen the wall edges.

The key is always to follow the manufacturer’s spacing requirements for screw fixings and channel centres and support the edges of the sheeting. Horizontal channels are not always mandatory, but can be used for additional support depending on sheet size or wall conditions. 

If you can let us know the type of sheeting you'll be using, then we can provide details on how the furring channels should be oriented.

Please let me know if you have any questions.

Mitchell