Few exterior finishes age as gracefully as cypress cladding. Grown in Australia and naturally resistant to termites, it brings warm, honey-toned character without the heavy upkeep of many alternatives. Installed well, it can look great for decades. Installed badly, it can cup, split or trap moisture. This guide walks you through every step.
What Is Cypress Cladding?
Cypress cladding is milled from Australian white cypress (Callitris), a softwood whose natural oils and resins help it resist termites and decay. It is lightweight, stable and easy to cut, which suits coastal homes and inland builds alike. Common profiles include shiplap and weatherboard styles.
What You Need Before You Start
Cypress boards, plus matching trims and corners
Breathable (vapour-permeable) wall wrap
Vertical battens, typically around 20 mm
Stainless steel or hot-dip galvanised fixings (316 stainless near the coast)
Insect mesh, starter trim and flashings
Exterior sealant and your chosen finish
Spirit level, saw, drill or nail gun, tape measure
Before ordering, check your council requirements and your bushfire attack level (BAL), as timber cladding can be restricted in some zones.
How to Install Cypress Cladding
Step 1: Acclimatise the Boards
Stack the boards flat and under cover on site for at least a week, with spacers between layers. This lets their moisture content settle before fixing.
Step 2: Prepare the Wall Surface
Make sure the framing is straight, sound and dry. Repair damage, fix any leaks and check the wall with a level, because uneven framing shows through the finished boards.
Step 3: Install a Breathable Membrane
Wrap the frame from the bottom up, overlapping horizontal joins so water sheds outwards. Tape the joins and seal carefully around openings.
Step 4: Fit Vertical Battens (Ventilation Cavity)
Fix battens over the studs to create a ventilated cavity behind the boards. Letting the timber dry from behind is one of the biggest contributors to longevity.
Step 5: Add Insect Mesh and Starter Trim
Install mesh at the base and top of the cavity to block pests while keeping airflow. Then fit the starter trim so the first board sits at the correct angle.
Step 6: Fix the First Board
Start at the bottom and check it is perfectly level. Any error here multiplies up the wall. Pre-drill near the ends to prevent splitting.
Step 7: Continue Board Installation
Work upwards, interlocking the profiles and keeping consistent gaps as the manufacturer specifies. Stagger butt joins and land each one on a batten.
Step 8: Handle Corners, Windows and Doors
Use corner trims or neat mitres, and fit flashings above every opening. Leave a small gap around frames for sealant, and seal all cut ends.
Step 9: Finish and Protect
Apply a quality exterior oil, stain or clear coat soon after installation, following the product label. Prompt finishing limits UV damage and weathering.
Horizontal vs. Vertical Cypress Cladding Installation
Horizontal boards are the most common choice and shed water naturally. Vertical installation gives a modern look but needs horizontal battens with a drained, ventilated cavity, and extra care at the base. Both work well when detailed properly.
Common Cypress Cladding Installation Mistakes
Skipping the ventilation cavity
Using uncoated or low-grade fixings that corrode or stain the timber
Leaving cut ends unsealed
Fixing boards too tightly, with no allowance for movement
Keeping boards too close to soil, paving or decks
Delaying the finish, which allows UV greying and surface checking
How to Maintain Cypress Cladding After Installation
Wash the boards once a year with a soft brush and mild detergent. Inspect for loose fixings, damaged sealant and moisture problems. Recoat according to your finish manufacturer's schedule, which varies with sun and weather exposure. Alternatively, you can let the timber weather to a natural silver-grey.
Cypress Cladding Cost and Installation Time
Cost depends on the profile, wall area, finish and labour. Order roughly 10 to 15 per cent extra for cuts and waste. A small feature wall may be a weekend job for a confident DIYer, while a whole house takes considerably longer. A written quote gives the clearest picture.
Do You Need a Professional?
Simple walls, sheds and feature panels suit capable DIYers. Call a licensed builder for multi-storey work, bushfire zones, complex flashing details or anything needing council approval.
Frequently Asked Questions
How long does cypress cladding last? With good ventilation, flashing and finishing, it can last for decades.
Does cypress cladding need to be treated? It resists termites naturally, but a protective finish keeps its colour and slows weathering.
What is the best fixing for cypress cladding? Stainless steel is ideal, and 316 grade is best near the coast. Hot-dip galvanised is a common alternative.
Can I install cypress cladding myself? Yes, for simple projects, provided you follow the manufacturer's instructions and local regulations.
How much gap should be left between cypress cladding boards? Follow your profile's specification. Interlocking profiles usually build in movement allowance.
Is cypress cladding better than cedar cladding? Cypress is locally grown and naturally termite resistant, while cedar is imported and generally pricier. The best choice depends on budget and look.
What finish is best for cypress cladding? A quality exterior oil or stain with UV protection works well. Choose clear for natural tones or pigmented for longer protection.
Final Thoughts and Next Steps
Great results come from preparation: acclimatised boards, a ventilated cavity, corrosion-resistant fixings and a prompt finish. Get those right, and your cypress cladding will reward you for years.
Ready to start? Contact the team at Ballarat Timber Supplies or info@ballarattimbersupplies.com.au for expert advice and a free quote
