Illawarra Handyman provides professional silicone sealing and caulking services across Wollongong and the Illawarra region. From bathroom and shower silicone replacement to kitchen sealing, window and door caulking, wet area joint sealing, expansion joint sealing, pool area sealing, skirting board caulking, and commercial joint sealing — we deliver clean, watertight, long-lasting finishes using professional-grade silicone and sealant products. Whether you need a single bathroom re-sealed or an entire property caulked, our team provides neat, precise results every time.
We service all suburbs across Wollongong and the Illawarra including Wollongong CBD, Figtree, Fairy Meadow, Thirroul, Corrimal, Bellambi, Towradgi, Fernhill, Balgownie, Tarrawanna, Keiraville, Gwynneville, North Wollongong, Coniston, Port Kembla, Warrawong, Unanderra, Dapto, Horsley, Albion Park, Shellharbour, Oak Flats, Kiama, Gerringong, Berry, and all surrounding areas. Fully insured, we work on residential homes, investment properties, and commercial premises throughout the region.
Old, cracked, or mouldy silicone is one of the most common maintenance issues in homes and businesses — and one of the easiest to fix with the right tradesperson. Contact us today for a free silicone sealing quote.
🚿 Bathroom Silicone Sealing
Bathrooms are the most common area requiring silicone sealing and re-sealing. Mould, cracking, shrinkage, and water ingress through failed silicone joints are major causes of water damage in homes. We remove old silicone completely and apply fresh, professional-grade mould-resistant silicone for a clean, lasting result.
- Shower Silicone Replacement — Complete removal of old, discoloured, mouldy, or cracked shower silicone from all joints, corners, and edges, followed by thorough surface preparation and neat re-application of fresh mould-resistant silicone.
- Bath Surround Sealing — Silicone sealing of all joints between the bathtub and surrounding tiles, walls, and enclosure panels to prevent water ingress and create a clean waterproof seal.
- Shower Screen Sealing — Sealing of shower screen frame-to-tile and screen-to-tray joints with appropriate silicone to prevent leaks at the base and frame edges of frameless and semi-frameless screens.
- Vanity & Basin Sealing — Application of silicone sealant around vanity units, bathroom basins, and sink edges where they meet wall tiles and cabinetry surfaces to prevent water damage.
- Wet Area Floor-to-Wall Joint Sealing — Sealing of floor-to-wall and hob-to-wall junctions in shower recesses and wet areas where rigid grout is not suitable and flexible silicone joint is required.
- Shower Tray & Base Sealing — Silicone sealing around shower tray edges, acrylic shower bases, and tile-to-tray junctions to prevent leaks at this critical waterproofing point.
- Toilet & Cistern Base Sealing — Application of silicone around toilet pan bases and cistern brackets for hygiene sealing and to prevent water seeping under the pan.
- Mould Removal & Silicone Replacement — Full removal of mould-affected silicone, surface cleaning with antifungal preparation, and fresh silicone application to eliminate recurring black mould in bathroom joints.
🍳 Kitchen & Laundry Sealing
Kitchens and laundries require watertight silicone seals around benchtops, sinks, splashbacks, and appliance connections. Failed or missing silicone in these areas allows water and grease to penetrate behind cabinetry, causing costly water damage and mould growth.
- Kitchen Benchtop Sealing — Silicone sealing of the junction between kitchen benchtop surfaces and wall tiles or splashbacks to prevent water and food contamination getting behind the bench.
- Kitchen Sink Sealing — Sealing around undermount and overmount kitchen sinks where they meet the benchtop, preventing water from seeping under the sink and causing cabinet damage.
- Splashback Sealing — Application of food-safe, non-yellowing silicone around tile, glass, and stainless steel splashbacks at the junction with benchtops and surrounding walls in kitchens and laundries.
- Laundry Tub & Trough Sealing — Silicone sealing around laundry tubs, troughs, and tub surrounds where they meet wall tiles and cabinetry to prevent moisture and mould buildup behind fittings.
- Washing Machine & Dryer Bay Sealing — Sealing of gaps and junctions around built-in washing machine bays, dryer niches, and laundry fitouts to prevent moisture penetration and pest entry.
- Rangehood & Appliance Surround Sealing — Silicone sealing around rangehood surrounds, built-in appliance frames, and penetrations through tiles and cabinetry to create neat, grease-resistant seals.
🪟 Window & Door Sealing
Windows and external doors require properly maintained silicone and caulk seals to prevent water ingress, drafts, and energy loss. We seal all window and door types in both residential and commercial properties, including new installations and replacement sealing on existing frames.
- Window Frame Sealing — Application of exterior-grade silicone sealant around aluminium, timber, and uPVC window frames at the junction with wall render, brick, or cladding to prevent water ingress and drafts.
- Window Sill & Reveal Caulking — Caulking of window sill-to-frame joints, internal reveals, and plastered surrounds to seal gaps and provide a neat, paintable finish around window openings.
- External Door Frame Sealing — Silicone sealing of exterior door frames, thresholds, and sill plates where they meet external walls, paving, and cladding to prevent weather ingress.
- Sliding Door & Frame Sealing — Sealing of sliding door frame perimeters, head flashings, and sill junctions to prevent water entry and air infiltration around large sliding door openings.
- Glass-to-Frame Sealing — Replacement of silicone seals between glass panels and aluminium or timber frames on windows, doors, skylights, and shower screens where original seals have failed.
- Garage Door Surround Sealing — Silicone sealing around garage door frames and roller door box frames where they meet the wall surface to prevent wind-driven rain entry.
🏗️ Expansion Joint & Movement Joint Sealing
Expansion joints, control joints, and movement joints in floors, walls, and paving require flexible sealants — not rigid grout — to accommodate structural movement without cracking. We provide professional joint sealing for residential, commercial, and industrial applications.
- Floor Expansion Joint Sealing — Application of flexible polyurethane or silicone sealants in floor expansion and control joints in tiled floors, concrete slabs, and commercial flooring to accommodate movement without cracking.
- Wall Expansion Joint Sealing — Sealing of vertical and horizontal expansion joints in tiled walls, rendered surfaces, and masonry to prevent water ingress while allowing natural structural movement.
- Concrete Slab Control Joint Sealing — Filling and sealing of saw-cut control joints in concrete driveways, paths, and slabs with flexible polyurethane sealant to prevent water, weed growth, and crack propagation.
- Paving Joint Sealing — Application of joint sealant between pavers, coping stones, and surrounding structures in outdoor areas where movement or water infiltration is a concern.
- Structural Crack Sealing — Sealing of non-structural cracks and gaps in rendered walls, brickwork, and masonry using appropriate flexible sealants to prevent water entry and further deterioration.
- Commercial Expansion Joint Sealing — Professional sealing of large expansion joints in commercial buildings, warehouses, car parks, and industrial floors using heavy-duty polyurethane or hybrid sealant products.
🏊 Pool & Outdoor Wet Area Sealing
Swimming pools, pool surrounds, outdoor showers, and water features require UV-stable, water-resistant silicone and sealant products specifically suited to permanent wet and sun-exposed conditions. We provide pool and outdoor sealing across Wollongong and the Illawarra.
- Pool Coping Joint Sealing — Application of pool-grade flexible sealant in the joint between pool coping tiles and the pool shell bond beam to prevent water ingress and movement-related cracking.
- Pool Tile Re-Sealing — Sealing of pool tile joints, waterline tile edges, and pool surround tile junctions using UV-stable, mould-resistant silicone rated for permanent water contact.
- Pool Shell Penetration Sealing — Sealing of pipe penetrations, fittings, and light niches through pool shells and pool walls to prevent water loss and structural damage.
- Outdoor Shower Sealing — Silicone sealing of outdoor shower bases, walls, and fittings using UV-resistant, weather-grade silicone suited to constant outdoor moisture exposure.
- Water Feature Sealing — Sealing of water feature edges, pond liners, fountain bases, and water feature tile joints to prevent leaks and maintain water levels.
- Alfresco Wet Area Sealing — Sealing of outdoor wet area floor-to-wall junctions, drain surrounds, and wet outdoor area tile joints in alfresco, BBQ, and outdoor entertaining spaces.
🏠 Internal Caulking & Gap Sealing
Internal caulking and gap sealing covers the wide range of small but important sealing tasks throughout a home — from skirting boards and cornices to gaps around pipes, architraves, and built-in joinery. Neat caulking is essential for a professional finish before painting and for pest exclusion.
- Skirting Board Caulking — Application of paintable acrylic caulk along the top edge of skirting boards and at internal corners to fill gaps before painting for a clean, professional finish.
- Cornice & Ceiling Caulking — Caulking of cornice-to-wall and cornice-to-ceiling junctions to fill settlement cracks and gaps before painting or after new cornice installation.
- Architrave & Door Frame Caulking — Caulking of architrave-to-wall gaps around door frames, window reveals, and built-in joinery openings to fill gaps and provide a neat paintable edge.
- Internal Gap Sealing — Sealing of gaps around plumbing pipes, conduits, and service penetrations through walls and floors using appropriate fire-rated or standard silicone sealants.
- Joinery & Built-In Sealing — Silicone sealing of joints and gaps around built-in wardrobes, cabinetry, shelving, and joinery fittings where they meet walls, floors, and ceilings.
- Tile-to-Timber Junction Sealing — Application of flexible silicone at the junction between tiled floors and timber flooring, skirting boards, and door thresholds to accommodate differential movement.
- Pre-Paint Caulking — Full internal caulking of all gaps, joints, and junctions prior to painting to ensure a professional finish, including skirting boards, cornices, windows, doors, and built-ins.
🏢 Commercial Sealing & Caulking
Commercial properties have extensive sealing requirements across wet areas, glazing, facades, and flooring. We provide professional commercial silicone and sealant services for offices, retail premises, strata complexes, aged care facilities, medical facilities, and industrial buildings across the Illawarra.
- Commercial Bathroom & Amenities Sealing — Full silicone re-sealing of commercial bathroom suites, amenities blocks, and wet areas in offices, retail centres, schools, and strata buildings.
- Facade & Curtain Wall Sealing — Application and replacement of structural and weatherproofing silicone sealants in commercial building facades, glazing systems, and curtain wall joints.
- Commercial Kitchen Sealing — Food-grade silicone sealing of commercial kitchen benchtops, sinks, splashbacks, equipment surrounds, and floor junctions to meet hygiene and waterproofing standards.
- Fire-Rated Joint Sealing — Application of fire-rated sealants and intumescent products at service penetrations, construction joints, and fire compartment boundaries to maintain fire resistance ratings.
- Strata Property Sealing Programs — Scheduled silicone inspection and re-sealing programs for strata complexes covering bathrooms, balconies, windows, and common area wet areas to prevent water damage claims.
- Industrial Floor Joint Sealing — Heavy-duty polyurethane sealing of saw-cut joints, expansion joints, and floor penetrations in warehouses, factories, and industrial facilities to handle forklift traffic and chemical exposure.
❓ Frequently Asked Questions — Silicon Sealing Wollongong
How much does silicone sealing cost in Wollongong?
The cost of silicone sealing in Wollongong depends on the scope of work — a single bathroom re-seal costs considerably less than a full property caulking before painting. We provide free, no-obligation quotes for all silicone sealing jobs, large or small, across the Illawarra region.
How long does silicone sealing last?
Professionally applied silicone sealant in a bathroom or wet area typically lasts 5–10 years before requiring replacement, depending on cleaning products used, water quality, and the level of movement in the substrate. Mould-resistant silicone products significantly extend the life of bathroom seals in humid coastal areas like the Illawarra.
Can you remove black mould from silicone, or does it need to be replaced?
While surface mould can sometimes be treated, black mould that has penetrated into the silicone body cannot be removed — the old silicone must be fully stripped and replaced with fresh mould-resistant product. We remove all old silicone, clean and prepare the surface, then apply new silicone for a lasting, hygienic result.
What is the difference between silicone and caulk?
Silicone sealant is a waterproof, flexible product used in permanently wet areas like showers, baths, and kitchens. Acrylic caulk is a paintable, water-based product used for internal gaps around skirting boards, cornices, and architraves where painting is required. We select the right product for each specific location and application.
Do you do silicone replacement only, or can you also do the preparation work?
We handle the complete process — removal of old silicone, surface preparation including cleaning and mould treatment, and fresh silicone application. We do not just apply new silicone over old, as this results in premature failure and an unprofessional finish.
Do you provide silicone sealing for strata and investment properties in Wollongong?
Yes — we regularly work with property managers, strata managers, and investors across the Wollongong and Illawarra region to provide bathroom re-sealing, kitchen sealing, and full property caulking services. We can provide written quotes and invoices suitable for property management and body corporate records.
How soon can you complete a silicone sealing job in Wollongong?
For most residential silicone sealing jobs we can typically schedule within a few business days. After the new silicone is applied, a minimum curing period of 24–48 hours is required before the shower or wet area is used again. We will advise on cure times for each specific product and application at the time of the job.
Get a Free Silicone Sealing Quote in Wollongong
Professional silicone sealing and caulking services across Wollongong, Illawarra & the South Coast. Call 0493 589 355 or click below to request your free quote.
Fully insured silicone sealing and caulking service. We use professional-grade mould-resistant silicone and sealant products for long-lasting, watertight results across residential and commercial properties in the Illawarra.
📍 Silicon Sealing — Areas We Service
Illawarra Handyman provides silicon sealing services across the following Illawarra suburbs. Click your suburb to see local pricing, availability, and service details.