Exterior Repaint of Weatherboard House with Rotted Board Replacement – Highett

Project Overview

This project in Highett involved a full exterior repaint of a double-storey weatherboard house, including replacement of several rotted weatherboards. The property sat in a well-established garden setting and featured two separate structures — the main house and a rear outbuilding and garage. The weatherboards had faded to a khaki and beige tone with visible grime, mould spotting and general weathering across all elevations. One section showed clear rust and tannin bleed staining running down the boards. The homeowner wanted to restore the exterior and make sure both structures were properly protected for years to come.

Highett is a popular bayside suburb in Melbourne’s south-east, offering suburban charm with proximity to the beach. Weatherboard homes are common here and while they have tremendous character, they require regular maintenance. Melbourne’s variable weather — hot summers, cold winters, rain and UV — is tough on timber. Left unchecked, minor issues like cracking paint and exposed timber escalate into rot, which is what had happened on this property.

Initial Assessment

We inspected every weatherboard on both the main house and the rear outbuilding, checking for rot, splitting, warping and paint failure. We also checked window frames, door frames, fascia boards, eaves and all other timber elements.

Several boards on the south-facing side had significant rot damage — soft to the touch and beyond the point of being filled. The south side of any property tends to get the worst of Melbourne’s weather because it receives less direct sun, meaning moisture lingers longer on the surface. On the remaining boards, paint was peeling and flaking in multiple areas with sections of bare timber exposed. The rust and tannin bleed staining we identified during the inspection would need specific treatment to prevent it showing through the new paint.

We provided the homeowner with a detailed report and comprehensive quote covering board replacement, full surface preparation, tannin treatment and complete repaint of both structures. We also discussed colour options — the existing white window frames and trims would be refreshed alongside the body colour.

Pressure Washing

The first stage was a thorough pressure wash of the entire exterior — both front and rear elevations of the main house plus the rear outbuilding. Our team used long-lance pressure washers to reach the upper levels, with steam visible on impact as years of grime, mould and weathering were stripped back. The pressure was adjusted carefully for timber — too much lifts the grain and causes damage, too little does not get the surface clean.

The pressure washing served two purposes: cleaning the surface for painting and revealing the true condition of the timber underneath. Once the grime was removed we could clearly see all the areas of damage, tannin bleed and paint failure that needed addressing. Ladders were set up in the garden ready for the follow-on preparation and painting work.

Weatherboard Replacement

We removed the rotted boards carefully to avoid damaging surrounding timber or building paper, then checked the framework behind. The framing was sound so we moved into fitting new boards. Replacements were sourced to match the existing profile and dimensions — the boards appeared to be lapped timber, possibly with some fibre cement sections. Every new board was primed on all sides before installation, including the back face. Priming all faces provides a moisture barrier that significantly extends the life of new boards — moisture entering from behind is one of the main reasons timber boards fail early. Once installed, gaps were filled and sanded for a seamless transition.

Surface Preparation

With the board replacement done we prepped the entire exterior across both structures. We scraped all loose and flaking paint from every board — labour-intensive on two buildings but absolutely essential. Paint applied over loose old paint will eventually fail regardless of the product used. We scraped thoroughly, then sanded the entire exterior to create a smooth base and feather back edges of remaining sound paint.

All nail holes, cracks, splits and imperfections were filled with quality exterior wood filler. We checked every board for early-stage rot and treated those areas with timber hardener — it penetrates soft fibres and hardens them chemically, stopping rot from spreading. The tannin bleed staining was treated with a stain-blocking primer to prevent the marks showing through the topcoats. Gaps around windows, doors and junctions were sealed with flexible exterior sealant.

The amount of preparation on a weatherboard property of this size is significant. Two separate structures, multiple elevations, years of accumulated wear. Every hour spent on preparation translates directly into a better, longer-lasting finish. We have seen properties where previous painters cut the prep short and the results show — peeling paint, visible repairs, failure within a couple of years. Our approach is to invest the time upfront.

Priming

Premium exterior timber primer on all bare timber, replacement boards and sections scraped back to bare wood. The product we use is specifically developed for exterior timber with deep penetration into the wood fibres, creating a stronger bond than general-purpose primers. We also gave exposed end grain an extra coat — end grain absorbs moisture much faster than the flat face of the board, so sealing it properly prevents rot and swelling.

Painting

For the topcoats we used a Dulux exterior acrylic formulated for timber weatherboards. Two full coats across all weatherboard surfaces on both the main house and the rear outbuilding, using brush and spray. Brush for cutting in and detail work, spray for efficient, even coverage across the flat surfaces.

All trim — window frames, door frames, fascia boards, eaves — was painted in white to match the existing scheme, using a hard-wearing exterior enamel for durability. These areas see more concentrated wear from UV and water runoff, so a tougher product helps protect them.

The homeowner chose a fresh colour scheme that updated the property from its previous faded khaki appearance. The result was a clean, modern look that suited both structures and complemented the established garden setting.

The Final Result

Complete transformation across both buildings. The main house and the rear outbuilding went from looking faded, grime-streaked and weathered to fresh, clean and well-maintained. The rotted boards were replaced seamlessly, the tannin bleed staining was invisible under the new paint, and the pressure washing followed by thorough preparation delivered a smooth, even surface throughout. The white window frames and trims looked crisp against the fresh body colour.

The homeowner was delighted and mentioned that several neighbours commented on the result. With the right preparation and products, a quality repaint will protect the timber for years. For homeowners in Highett and across the bayside suburbs, regular maintenance is the best investment you can make.

The rear outbuilding and garage required the same level of preparation and painting as the main house. Both structures received the full treatment — pressure washing, scraping, sanding, filling, priming and two coats of topcoat. Maintaining consistent quality and finish across two separate buildings on the same property is important for a cohesive result. The colour scheme was applied consistently so both structures looked like they belonged together.

The pressure washing stage on this property was particularly revealing. As the high-pressure water stripped away years of grime, the true condition of the timber was exposed. Areas that had looked merely dirty were actually in worse condition underneath, while other areas that looked concerning turned out to be surface-level issues that cleaned up well. This is why pressure washing is always our first step on a weatherboard property — it gives us the accurate picture we need to plan the preparation work properly.

Why Choose Ace Team Painting

We have worked on weatherboard homes across Melbourne for over 15 years. We understand the unique requirements of timber exteriors — the right preparation, the right products and the care needed to deliver results that last. Fully licensed, insured and completed in compliance with Australian Standards. Get in touch for a free quote.

Weatherboard homes are a big part of Melbourne’s character and keeping them well maintained is something we care about. The right preparation, the right products and the right technique make the difference between a paint job that lasts a couple of years and one that protects your home for a decade. Every weatherboard project we take on gets our full commitment to quality.