Skip to main content
  1. Posts/
  2. Quiet Shed/

Cladding and Roofing

·411 words
Felix Andrews
Table of Contents
Quiet Shed - This article is part of a series.
Part 3: This Article
Sheet metal with ventilated cavity. Low cost, highly durable.

Wall cladding

I chose a metal sheet cladding with the same profile as the existing shed: Stramit K Panel. This is definitely one of the cheaper cladding options at just over $30 / m2.

This should (should!) go without saying: I wrapped the structure in a vapour-permeable membrane, taped at edges and joints, and battened it out with a ventilated cavity.

Walls wrapped and taped; cavity battens mounted

I ordered the panels and flashings in Woodland Grey to blend in with the bushland surrounds.

North wall cladding and flashing screwed on to battens with colour-matched roofzips
Sheet head flashing - specification

South wall against fence

The south wall was awkward to build because it is right up against the fence. I wrapped, battened, and clad it leaning over in place. The wrap had to be folded in and sealed under the wall; I could not reach in to tape it at the bottom.

South wall being wrapped, awkwardly
South wall - hopefully not needing any maintenance, ever


The roof cladding was similar to the walls. But in a corrugated profile and light colour: Shale Grey. I completed it with a simple flashing all around, gutter, and downpipe.

Above Sheathing Ventilation

Above Sheathing Ventilation (ASV) is explained in a series of articles by Jesse Clarke. It is the use of a ventilated cavity directly above the membrane wrap (ie below the metal roofing sheets). As the articles explain, this elegantly solves a set of condensation and thermal issues. And it is in contrast to the typical Australian approach of using “anticon” blanket.

(Vertical) counter battens for ventilation and drainage; (horizontal) battens for fastening sheets

I made the counter battens by cutting up some excess hardwood decking.

Making counter battens on the table saw

This gives a continuous ventilation pathway of 19mm up the roof.

Close up view of ventilated cavity

The cavity won’t be ventilated effectively without a clear exit path. However the exit at the top can be smaller in area than the entry at the bottom. The corrugations in the roof sheet are enough. But critically, there must be a path through the ridge flashing. So I offset it from the top edge of the sheets by 10-20mm.

Looking inside the ridge flashing at the ventilation exit path


I clad the soffits with 4mm fibre cement sheets painted Shale Grey to match the roof.

Quiet Shed - This article is part of a series.
Part 3: This Article