Roof and Exterior Painting in Lemoenkloof, Paarl

Lemoenkloof Roof and Exterior Painting Project in Paarl

Painters Cape Town completed a substantial roof and exterior painting project at a private home in Lemoenkloof, Paarl, during August 2026.

This was more than an ordinary repaint. The project involved weathered corrugated roof sheets, exterior plastered walls, steel garage doors, varnished exterior timber, Nutec fascias and soffits, cracked masonry, horizontal waterproofing and moisture-related preparation.

The original site inspection recorded Protimeter readings from Min 1.4% to Max 17.9%, along with chalking, mould, plaster cracks, failed seals, ageing waterproofing and deteriorated existing coatings.

Each substrate required an appropriate preparation and finishing system. The work was carried out by our directly employed painting team, under working-foreman supervision.

This original case study supports our Painters Paarl flagship and, particularly, our Roof Painting Paarl service.

Lemoenkloof Project Summary

Original Lemoenkloof Project Photographs

These photographs document the property’s condition before painting and the painting team working on the corrugated roof. The second photograph shows work in progress, not a separate final after photograph.

What We Found Before Painting

The inspection identified several different maintenance problems rather than one isolated paint defect:

• Chalky and weathered corrugated roof coatings.
• Weathered and chalky exterior wall paint.
• Mould and biological staining on walls and parapets.
• Map or spiderweb cracking in plastered surfaces.
• Wider cracks on vertical and horizontal masonry.
• Selected failing window and door perimeter seals.
• Ageing waterproofing on exposed horizontal surfaces.
• Expansion joints with deteriorated sealant.
• Moisture-related discolouration and alkali-sensitive masonry.
• Peeling paint on Nutec fascia components.
• Different preparation requirements for metal, timber and plaster.

These observations were included in the written preparation specification before painting began.

The case is also relevant to our Why Paint Peels and Bubbles in Paarl guide, which explains why coating deterioration should be investigated before another coat is applied.

Protimeter Moisture Readings: Min 1.4%, Max 17.9%

Recorded moisture readings ranged from 1.4% to 17.9% across the assessed exterior masonry.

The variation was significant because a single reading cannot be used to diagnose an entire property as having one type of damp.

Moisture observations were considered together with the condition of the plaster, wall construction, parapets, windowsills, cracks, failed sealants, expansion joints, foundation walls and other possible moisture-entry routes.

Protimeter readings support an inspection; they do not independently identify the water source.

Why the Existing Paint Could Not Simply Be Overcoated

The existing roof and wall coatings had deteriorated through weathering and exposure.

Chalking leaves powdery residue as an ageing coating breaks down. Painting over this weak surface can prevent the new coating from bonding correctly to the underlying substrate.

Other defects—including cracks, failed sealants, moisture-sensitive plaster and worn waterproofing—needed attention before the final decorative finish.

Correct preparation therefore formed the foundation of the work.

Exterior Wall Cleaning and Surface Preparation

Suitable exterior surfaces were specified for high-pressure cleaning to remove loose paint, chalking, grime and surface contamination.

Where pressure washing was not suitable, the specification included manual cleaning using ProGold GP Cleaner followed by a clean-water rinse.

Loose coating material and contamination had to be removed before compatible sealers, primers, waterproofing and finishing coats could be applied.

Treatment of Mould and Biological Staining

Mould and staining were recorded on parapets, main-building walls, garden walls and roof-related surfaces.

The preparation specification included ProGold Fungal Wash for affected surfaces before subsequent coating preparation.

Biological contamination should not simply be concealed beneath new paint. The affected surface and any contributing moisture conditions must be considered before repainting.

Why the Parapets and Windowsills Needed Re-Waterproofing

The property’s horizontal waterproofing had been completed several years earlier and had deteriorated to the point where renewal was required.

The project therefore included suitable parapets, windowsills and exposed wall tops.

The original specification called for two coats of Dulux Rainshield, with the second coat applied perpendicular to the first.

These horizontal surfaces are exposed directly to rainfall. Deteriorated coatings, cracks and openings can allow water into adjacent masonry, sometimes causing paint failure lower down the wall.

Our Waterproofing Paarl page explains these details and includes further local project evidence.

Hairline, Map and Wider Plaster Crack Repairs

The Lemoenkloof inspection identified different types of plaster cracking. Each required a preparation method suited to the defect.

Hairline Cracks

Suitable cracks up to approximately 1 mm were specified for alkali-resistant sealing, followed by Dulux Rainshield worked into the prepared cracks.

This treatment was intended for appropriate fine defects, rather than cracks involving significant structural movement.

Map and Spiderweb Cracking

Areas affected by networks of fine cracks required broader preparation.

Following the relevant primer work, Dulux Rainshield was specified for suitable map-cracked areas rather than simply applying the decorative wall coating over the existing cracking.

Wider Plaster Cracks

Suitable cracks measuring approximately 1–5 mm required a different procedure.

These were specified to be opened into appropriate V-shaped joints, cleaned and repaired with compatible masonry patching material.

After curing and sanding, the appropriate Dulux Rainshield treatment was specified across the repaired surfaces before the finishing coats.

These dimensions and repair methods describe this project’s written specification. They are not a guarantee that every crack of a similar size is structurally harmless or suitable for the same repair.

For more detailed technical examples, including original Kaapse Draai and Pearl Valley photographs, see Wall Preparation & Crack Repairs Paarl.

Failed Window, Door and Expansion-Joint Sealants

Selected sealants around windows and doors were deteriorating.

The quotation specified removing failed sealant where required and resealing suitable joints with a flexible single-pack polyurethane sealant.

Other relevant fittings and wall penetrations were also considered because openings around frames and penetrations can allow rainwater to enter behind the coating.

Why Expansion Joints Needed Flexible Sealing

Expansion joints are designed to accommodate movement. Rigid plaster filler is not an appropriate substitute for a movement-tolerant joint system where movement is expected.

The original scope therefore included flexible polyurethane sealant for deteriorated expansion joints where required.

Flexible sealing can accommodate movement within its intended capability, but it cannot prevent ongoing structural movement.

Moisture-Related Discolouration and Alkali Attack

Some exterior wall coatings showed discolouration associated with moisture movement through cement-based surfaces.

Moisture can transport soluble salts within masonry. Under certain conditions, these can contribute to discolouration and deterioration of the paint film.

The preparation approach considered cracking, waterproofing, failed seals and moisture-sensitive surfaces rather than assuming that another decorative topcoat would solve the problem.

Damp-Related Wall Preparation

Chalky or friable wall areas were specified for Dulux Bonding Liquid where necessary to stabilise suitable remaining material.

Moisture-affected areas were also specified for Dulux Pre-Paint Dampshield or Dulux Dampshield treatment where appropriate, according to the recorded condition and preparation requirements.

These coating systems were part of the agreed remedial approach. They were not described as substitutes for repairing accessible moisture-entry defects.

For a more detailed explanation of moisture-related painting limitations, see Damp Proofing Paarl.

Why Boundary and Garden Walls Need Realistic Expectations

The project documentation recorded that certain boundary and garden walls did not have an effective damp-proof barrier separating the masonry from ground moisture.

Water can continue moving into these walls through soil, irrigation or backfill.

Preparing and repainting the accessible face does not create a missing structural damp-proof course.

Consequently, moisture-related discolouration, bubbling or peeling may recur even after careful preparation where the underlying moisture source remains active.

These limitations were explained in the original quotation rather than promising that decorative paint would permanently prevent moisture movement.

Backfilled Foundation-Wall Areas

Moisture-related discolouration was also noted below some weep-hole and expansion-joint levels.

Parts of these surfaces were exposed to moisture from the backfilled side of the wall.

The visible face could receive appropriate surface preparation and specified coatings, but paint on that face could not permanently eliminate water entering from behind.

Corrugated Roof Painting in Lemoenkloof, Paarl

The roof formed one of the most important parts of this project.

The existing corrugated-metal roof coating was chalky and weathered. Proper cleaning, corrosion preparation, compatible priming and appropriate roof finishing were required.

For homeowners specifically looking for a contractor to paint a similar roof, our dedicated Roof Painting Paarl page provides further evidence from this project and original Nantes Street before-and-after photographs.

Cleaning the Weathered Roof

The roof specification included high-pressure cleaning to remove old loose coatings, chalking, grime and other contamination.

Where appropriate, manual cleaning was specified instead.

Fungus-affected areas were treated before additional roof preparation.

Inspecting and Treating Rust

The corrugated sheets were inspected for corrosion.

Where rust was present, loose corrosion was removed and the relevant areas were treated with Duram NS1 rust converter and primer before the full primer coat.

Painting directly over active rust would not remove the underlying corrosion.

Roof Overlaps and Water-Entry Details

Potential water-entry areas were inspected separately from the decorative roof coating.

Where appropriate, the original specification allowed for compatible waterproofing material reinforced with a mesh membrane at identified corrugated-sheet details.

Local waterproofing and roof painting are related activities, but they are not identical services.

Full Dulux Rust Primer Coat

Following the relevant cleaning, fungal treatment, rust preparation and local waterproofing, the corrugated roof received the specified full Dulux Rust Primer coat.

The full primer system formed an important preparation stage beneath the final roof finish.

Two Coats of Dulux Roofguard Charcoal

The homeowner selected Dulux Roofguard in Charcoal as the final roof colour and coating.

The prepared and primed roof was finished with two coats of Dulux Roofguard Charcoal.

The roof-painting scope therefore included considerably more work than simply applying two coloured coats over the existing paint.

Roof Painting Does Not Replace Structural Roof Repairs

A roof coating protects and refreshes a suitable sound substrate. It does not replace damaged sheets, failed flashings, defective fasteners or repairs to serious corrosion and structural roof problems.

Active leaks and unrelated roofing defects should be identified and repaired appropriately rather than relying on a decorative coating alone.

Steel Garage Doors and Other Metalwork

The steel garage doors were included in the exterior metal-painting scope.

The existing coatings and metal surfaces needed appropriate cleaning, assessment and preparation before the compatible finish was applied.

Loose paint and corrosion must be considered on garage doors just as they must on exposed metal roof sheets, although the specific finishing systems may differ.

Varnished Exterior Windows and Doors

The property had varnished exterior woodwork that required maintenance.

The existing finish was specified for light sanding with suitable scouring pads or fine-grit sandpaper, reducing the sheen and creating a suitable key for the next coat.

The timber needed to be clean, dry and sound before receiving the Dulux Woodgard varnish system.

This differed from the preparation of masonry, painted metal and Nutec components.

Nutec Fascias and Soffits

Peeling paint was recorded on Nutec fascia components at the rear of the property.

The agreed preparation involved removing loose coating material, sanding, feathering hard paint edges and completing fungal treatment where necessary.

The project finishing schedule specified Dulux Roofguard for suitable prepared Nutec soffit areas.

Exterior Main-Building and Garden-Wall Finish

Following cleaning, crack preparation, waterproofing, suitable sealing and damp-related work, the main-building, entrance and garden walls received two coats of Dulux Wallguard.

These finishing coats were the final stage of a broader preparation system rather than the starting point of the project.

Our Exterior Painters Paarl page explains our wider exterior service, including additional original Kaapse Draai project evidence.

Documented Products and Preparation Systems

The original project documentation included the following materials according to the relevant surface and work requirements:

These product names reflect the documented project systems. Their inclusion does not imply a manufacturer endorsement or an automatic coating warranty. Any supplier-backed warranty is subject to the applicable written specification, preparation, substrate conditions and exclusions.

Why This Project Matters for Homeowners in Paarl

Lemoenkloof demonstrates why two properties of a similar size can require very different preparation and painting costs.

At this home, the exterior scope included metal-roof preparation, wall cracking, waterproofing, moisture-related surfaces, varnished timber, steelwork and Nutec components.

Those surfaces required separate inspection and preparation before finishing.

Our House Painting Costs Paarl guide explains why preparation, access, roofs and different coating systems influence a written quotation.

Part of Our Wider Paarl Painting Experience

This Lemoenkloof project is one part of our documented painting history in Paarl.

Our Courtrai interior project demonstrates a different set of preparation requirements involving double-volume timber ceilings and movement-sensitive cornices.

We also have dedicated estate-painting evidence from our completed Val de Vie project. Val de Vie additionally has its own Painters Val de Vie service page, separate from our general Paarl services.

For the full range of local work, see Painters Paarl. Our wider regional coverage is described on Cape Winelands Painters.

Experienced Employed Painters and Working-Foreman Supervision

Painters Cape Town has 27 years of painting-contractor experience.

The original Lemoenkloof quotation recorded painters who were Paint Academy trained and had at least ten years of experience with the company.

Working foreman Riaan supervised the project, supported by additional contractor site visits.

Our painting teams are full-time employees rather than subcontracted crews. Clients deal directly with the contractor responsible for the inspection, quotation, preparation, painting and handover.

Request a Lemoenkloof or Paarl Painting Quotation

If your home has a weathered corrugated roof, cracked exterior plaster, peeling paint, mould, failed seals, ageing waterproofing, rust or deteriorating exterior timber, the correct starting point is an inspection of the affected surfaces.

We’ll discuss the preparation required and provide a written quotation describing the agreed coating systems, work scope and relevant limitations.

Call 082 374 6862 or visit our contact page to request an inspection in Paarl.