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
Commercial & Residential Silicone Caulking Contractors in Melbourne
Gapless installs fire rated, acoustic, precast panel and facade sealants for builders, fit-out companies, flooring contractors and precast installers across Melbourne — 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.
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 →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.
- Manufacturer-approved sealant systems — mostly Pasco and APTC, plus Soudal, Bostik and Sika — installed to the manufacturer's specifications.
- 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.