expansion joints done propertyly, not painted over.
We seal brick and blockwork expansion joints with the right flexible sealants to accommodate movement, prevent cracking, and protect your building from water penetration.
Verified Quality Standards
Delivering consistent, five-star results on every project.
Why brick joint caulking matters
Brick joints are one of the most overlooked expansion points on a home — and one of the most consequential. They take constant movement, UV exposure and weather stress. When the sealant fails, that movement has to go somewhere else, usually as cracking in the mortar joints nearby, and the damage compounds quietly until it can’t be ignored.
Don’t be fooled by quick fixes and cheap quotes. We do it properly so you never have to do it twice.
Silicone comes in a much wider range of colours than polyurethane, giving a considerably higher chance of a clean match to brick or mortar tones — one of the main reasons we operate this way.
Silicone is genuinely UV-stable; a lot of polyurethanes aren't, despite what the packaging says. Brick joints are almost always exposed to the sun, so we use products that can handle it.
We get a cleaner and smoother finish using silicone, tooled to a consistent line along the full joint. Long lasting finish because of the appropriateness of ways and products used.
FEATURED REVIEWS
“Correct Caulking have performed multiple jobs on my complicated architectural project. I was most impressed by their professionalism to make secondhand bricks with broken corners look slick. I recommend them to potential clients who care about the way caulking should look.”
“Anthony and Joe sealed all of our black aluminium doors and windows to the half-brick and half-rendered walls of our 16 year old house in the Adelaide Hills. They used masking tape to achieve a very clean edge and smoothed the sealant perfectly. Between quoting and doing the job was only 4 days, and it took about 5 hours. They were punctual, polite and good humoured. I strongly recommend them.”
“I am extremely happy with the workmanship and quality of the caulking services provided. The team was professional, explained the products clearly, and helped me choose the best options to complement our brickwork and textured concrete theme. The finish looks excellent, and their pricing was very competitive.”
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What Sets Our Brick Joint & Blockwork Caulking Apart
At Correct Caulking, you’ll get brick joint and blockwork caulking that goes beyond the ordinary. Trust us as we colour-match and make your brick joint leak-free.
Every brick or blockwork joint gets the same careful process — no shortcuts, no rushed steps.
We check joint spacing, substrate (brick, render, Hebel) and sun exposure to plan the right product for the job.
For existing joints with old or failed sealant — typically private client jobs — we remove it fully before starting. New-build joints go straight to preparation.
The joint is cleaned and a backing rod set to the correct depth for the joint's width.
Silicone or polyurethane — whichever suits the joint — is applied and colour-matched to the brick or mortar.
A final check confirms a clean, continuous line and full coverage along the joint.
We’ll complete your job on time and to the standard we’ve agreed — or we’ll come back and make it right at no cost to you. No excuses, no delays, no chasing us up. That’s our promise to every customer.
Beyond the caulking itself — here’s what working with Correct Caulking actually looks like.
Same-Day Sealing
Most brick and blockwork jobs are completed in a single visit.
Long-Lasting Results
The right product for the joint and its sun exposure, built to last.
Upfront, Fixed Pricing
You’ll know exactly what you’re paying before we start. No surprises on the day.
Approachable
Team
Have questions on the day? Our team will take the time to explain what we’re doing and why.
Before any sealant goes in, we set the joint up correctly with a backing rod pushed to roughly 8–10mm depth. Getting this right matters: too shallow and the bead won’t have enough sealant to bond and move with the joint; too deep and you risk the foam showing through or the bead not curing evenly through its full depth. We also check that the joint’s width-to-depth ratio suits the sealant’s movement capability — a joint that’s too deep relative to its width restricts the bead’s ability to stretch and compress with the brickwork, which is one of the more common reasons brick joint sealant fails early.
Where a brick or block wall forms part of a wet area’s waterproofing envelope — for example, an external masonry wall sitting directly behind a shower — the wall/floor junction and any penetrations through it fall under AS 3740’s wet-area waterproofing requirements, even though the general expansion joints running along the rest of the wall don’t. We factor this in on any brick or blockwork job that touches a wet area.
Beyond the caulking itself — here’s what working with Correct Caulking actually looks like.
We carry $20 million in public and products liability cover, insured for the risk category of mastic sealant and caulking work specifically — not a generic trades policy.
We hold current WorkCover registration in every state we operate in, covering our employees for work-related injury.
We provide superannuation for all employees, in line with the Australian Government’s Super Guarantee requirements.
Every team member on site holds a current White Card, the nationally recognized card required to legally work on a construction site in Australia.
High-risk work is backed by a project-specific SWMS, setting out the hazards, controls and PPE for that job before we start.
Every sealant, primer, and cleaning product we use has a corresponding Safety Data Sheet on hand, covering safe handling, storage and disposal.
Expansion joints allow buildings to move naturally with temperature changes while helping prevent cracking and structural damage.
We select premium polyurethane or other high-performance sealants depending on the joint type, movement requirements and environmental exposure.
Yes. We remove deteriorated sealant, prepare the joint correctly and install new flexible sealant designed for long-term performance.
Yes. We provide brick joint and blockwork caulking for homes, warehouses, factories, apartment buildings and commercial developments.
The lifespan depends on environmental conditions and joint movement, but premium professionally installed sealants are designed to provide many years of reliable performance.