Field video

01 — Caulking & sealing

Caulking & sealing.

The line where two surfaces meet. Done right, you never notice it. Done wrong, it is the first thing to fail.

Joint width
6–25 mm
Sealants
4 types
Adhesion
2 sides
Typical home
1–2 days

What it is

The smallest trade. The biggest tell.

Every building moves. Timber swells, render shrinks, slabs creep and glass grows in the sun. A sealant joint lets two surfaces move without cracking or letting water in. It is the smallest trade on site, and one of the most important.

We cut out failed sealant, clean and prime the joint, set the depth with backer rod, and tool every bead to a clean concave line. For homeowners, builders and commercial sites across Greater Sydney.

Anatomy of the finish

Section Creative Caulkers · Studio film Typical system Sydney

    Where it works

    Made for real rooms.

    Wet areas

    Showers, baths, vanities and kitchens in mould-resistant silicone.

    Interiors

    Skirting, cornices and architraves in paintable acrylic.

    Windows & facades

    Window and door perimeters, cladding and expansion joints.

    Fire-rated

    Fire-rated sealant to penetrations and joints in commercial builds.

    Every joint we seal

    Small jobs. Whole buildings.

    From one bathroom to a basement car park. Every job gets a free, fixed quote.

    Finishes

    Four sealants. One clean line.

    Drawn by the studio to show what each one is.

    SECTION · ACRYLIC

    Acrylic

    Paintable. Skirting, cornices, architraves and interior gaps.

    SECTION · SILICONE

    Silicone

    Waterproof and flexible. Wet areas, glazing and kitchens.

    SECTION · HYBRID

    Hybrid polymer

    Tough, paintable and UV-stable. Facades, windows and expansion joints.

    SECTION · FIRE-RATED

    Fire-rated

    Tested systems for penetrations and joints in fire-rated walls.

    On the tools

    From the field.

    Field photoSealing the perimeter of a tall arched window from a ladder
    SydneyCaulking

    Arched window perimeter, from the ladder.

    Field photoA clean sealant line where timber stairs meet a painted wall
    SydneyCaulking

    Stair to wall: one continuous line.

    Field photoOverhead soffit joint sealed from an elevated work platform
    SydneyCaulking

    Soffit joint, sealed overhead from the EWP.

    Field photoFoam backer rod pressed into a concrete slab joint
    SydneyCaulking

    Backer rod set in a slab joint, ready for sealant.

    Our process

    Five steps. No shortcuts.

    1. 01

      Read

      We read the surface before we quote: moisture, level, movement and light.

      Moisture · level · movement
    2. 02

      Prepare

      Grind, patch, prime and mask. Most of a great finish is preparation nobody sees.

      Prep ≈ half the job
    3. 03

      Apply

      By hand. Every bead, every coat, every pass of the trowel.

      Hand-applied
    4. 04

      Cure

      We work to the product’s cure times and the day’s weather, not to a rushed deadline.

      Temp · humidity · time
    5. 05

      Reveal

      A walk-through, a care guide, and we come back if anything is not right.

      Care guide included

    FAQ

    Caulking, asked.

    What is the difference between acrylic and silicone?

    Acrylic is paintable and suits interior joints like skirting boards, cornices and architraves. Silicone is waterproof and flexible, so it is the right choice for bathrooms, kitchens and wet areas.

    How long does caulking last?

    Good sealant usually lasts 5 to 15 years. Wet-area silicone may need refreshing every 5 to 7 years. Interior acrylic often lasts well over a decade.

    Can you replace old, mouldy silicone?

    Yes. We cut it out fully, clean and treat the joint, let it dry, then reseal. We never seal over old sealant.

    Can caulking be painted?

    Acrylic can be painted once it has cured, usually within a few hours. Silicone cannot be painted, which is why it is used where the seal itself is the finish.

    How much does caulking cost?

    It depends on the metres of joint, the joint size, access and the sealant. We give a free, fixed quote after we see the job.

    Start a project

    Let’s finish it.

    What are we finishing?

    Free quote. Usually a same-day reply on weekdays.