Fire Rated Caulking
Fire rated sealants installed to manufacturer specifications in service penetrations, control joints and wall junctions. We work with fire rated systems from Pasco, APTC, Soudal, Bostik and Sika.
Fire rated caulking →Specialist caulking · Melbourne · 10+ years' experience
Caulking Contractors in Melbourne — Fire Rated, Acoustic & Precast Specialists
Gapless provides commercial and residential caulking services across Melbourne: fire rated, acoustic, precast panel and facade sealing for builders, fit-out companies, flooring contractors and precast installers — the technical caulking work that general caulkers don't do every day. Fully insured, SWMS and site-induction ready, typically booking with 1–2 weeks' notice.
Since 201610+ years' specialist caulking
Fully insuredSWMS & site-induction ready
Engineering-traineddirector on every project
1–2 weekstypical booking lead time
Pasco · APTC · Sikasystems installed to manufacturer spec
Specialist caulking is our core work
Most caulking companies do wet areas and windows. Gapless does those too — but our core work is the specialised sealing that projects fail inspections and defect lists over: fire rated joints, acoustic junctions and precast panel joints. Our installers have over 10 years' hands-on experience with these systems.
Acoustic / Soundproof Caulking
Acoustic sealant to wall perimeters, junctions and penetrations in apartments, offices and studios — the detail work that keeps sound where it belongs.
Acoustic caulking →Precast Panel Caulking
Weatherproof polyurethane and hybrid sealant joints between tilt-up and precast concrete panels — straight lines, correct joint depth, backer rod done properly.
Precast caulking →Facade, ACP & Cladding Sealing
Weather sealing to aluminium composite panels, cladding junctions and window perimeters on commercial facades.
Facade sealing →Expansion & Control Joints
Movement joints in concrete slabs, walls and warehouse floors, sealed with the right sealant class for the movement and traffic they take.
Expansion joints →Brick & Blockwork Joint Sealing
Articulation and control joints in brickwork and blockwork, colour-matched and tooled clean.
Brick & blockwork →Commercial Fit-out Caulking
End-of-fit-out caulking for shopfitters and fit-out companies: junctions, skirtings, joinery, glazing and wet areas — done at handover pace.
Fit-out caulking →Caulking Inspections & Failure Analysis
Independent inspections and forensic sealant failure analysis for builders, strata managers and owners — what's failing, why, and what a proper repair looks like. Written findings with photos.
Inspections & analysis →Caulking Maintenance Audits
Annual joint condition audits for strata, facility managers and landlords — catch failing sealant a season before it leaks, and budget repairs on your schedule. QA hold-point checks for builders too.
Maintenance audits →Residential Caulking
Bathrooms, kitchens, showers, windows and external joints for homes and renovations. We do all jobs — no job too small.
Get a quote →Flooring & Wet Area Sealing
Floor junction and wet area sealing for flooring contractors — clean lines that make the finished floor look right.
Get a quote →Why builders choose Gapless
- Over 10 years' caulking experience, including specialist fire rated and acoustic work most caulkers don't handle.
- Engineering-trained director. Gapless is run hands-on by a director with a civil/structural engineering background who trains every installer and manages projects personally.
- Professional sealant systems — mostly Pasco and APTC, plus Soudal, Bostik and Sika — installed to each manufacturer's published specification.
- Fully insured, with SWMS, SDS and site-induction compliance for commercial sites.
- Construction-ready crews that fit builder workflows: clear scopes, reliable quoting, clean finishes at handover.
- 1–2 weeks' notice is our typical booking lead time — tell us your program and we'll work to it.
Our work
Who we work with
Gapless works with builders, commercial fit-out companies, flooring contractors, precast and tilt-panel installers, bricklayers and property owners across Melbourne CBD, Greater Melbourne, Geelong, the Mornington Peninsula, Bayside and the Western suburbs. Commercial, residential and industrial — we do all jobs.
How quoting works: send us the job through the quote form with the location, the joint types and rough quantities (lineal metres if you know them), and any drawings or photos you have. We price from that — free, with no obligation. Job cost depends on lineal metres, joint size and depth, access, and the sealant system required; we don't publish rates because no two jobs are the same — but our Melbourne caulking cost guide shows the typical market ranges and has an instant estimator.
Also from Gapless
Free tools we built for our own jobs, and the software we run the business on.
Free calculators
Caulking cost: typical Melbourne prices per metre with an instant estimator. Sealant quantity: joint size and metres in — cartridges, sausages and backer rod out. Expansion joint width: how wide the joint must be for the movement. No sign-up.
Book online — existing clients
Clients already on our books pick a date and site online and get an answer from the real roster. New to Gapless? Bookings start with a quote — call us or send the job through and we'll set you up.
Gapless Crew software
Run a caulking or sealing crew? The system we built to log every day from the van and turn it into invoices, crew pay and QuickBooks — now available to other contractors.
Free quote · no obligation
Get a free caulking quote in one step
Tell us the suburb and roughly what needs sealing — we'll come back with a price or a call to clarify. Quotes are free; we typically book with 1–2 weeks' notice.
- 10+ years' specialist experience
- Fully insured · SWMS & induction ready
- Pasco · APTC · Soudal · Bostik · Sika systems
Got photos or drawings? Send them on WhatsApp or call 0414 824 987.