Commercial — Mixed-UseDevelopment render
Arc Apartments
Window sealing to the residential levels above the ground-floor retail, done with polyurethane for the external perimeter.
- Window perimeters
- Polyurethane sealant
For Adelaide builders
Joint sealing specialists for commercial, multi-residential & new-build projects
Delivering reliable sealing systems, without leaks, rework or delays.
- 8+ years experience
- Insured & SWMS supplied
- 50+ properties sealed
What we do
Silicone, polyurethane & fire caulking
Professional joint sealing for new-build residential, commercial and multi-residential projects across metropolitan Adelaide.
Internal wet areas & finishing joints
Silicone Sealing
Internal wet areas, kitchens, bathrooms, tiles, stone, benchtops and windows. Clean lines, colour-matched finishes and careful prep.
View Silicone Sealing
External façade & movement joints
Polyurethane Sealing
External joints, expansion joints, concrete panels, facades, blockwork, precast and high-movement areas.
View Polyurethane Sealing
Fire-rated penetrations & joints
Fire Caulking
Fire-rated sealing for service penetrations, control joints, wall junctions and compliant construction details.
View Fire CaulkingOur work
Recently completed projects
A selection of commercial and multi-residential joint sealing work completed by ASPEX.
Commercial — High-RiseDevelopment render
Market Square
Flooring joint sealing across the development, alongside expansion joints through the podium and tower levels.
- Flooring joints
- Expansion joints
Commercial — Multi-ResDevelopment render
Uniting on Second
Window perimeter sealing across the facade, keeping the building envelope weathertight unit by unit.
- Window perimeters
- Wet area silicone
Get pricing
Quick Online Quote
Get your caulking price without the back-and-forth.
Tell us about your job in about a minute. Upload photos, answer a few quick questions, and we'll review the details and get back to you with pricing.
- No obligation
- Usually answered the same day
- 12-month workmanship warranty
What you get
Four promises, every job
Not slogans — commitments you can hold us to on site.
Flawless finish, every joint
Sharp lines and colour-matched beads — the joint reads as part of the finish, not a seal over it.
Prepped so it doesn’t come back
Every joint cut back, backed and dried before a bead goes near it. Skip that and it fails — we don’t skip it.
Handover-ready when we leave
Beads checked, surrounding surfaces protected, and no trimmings left for another trade to sweep up.
On site when we said
Sealing is the last trade before handover, so we hold the dates we give you and flag early if something shifts.
On the tools
The finished detail
Real joints on real sites — swipe through the finish a builder signs off on.
How we work
Our process
Transparent, honest, and built around the way a builder actually needs a sub to run.
Scope checked before pricing
We review plans, site details and joint types before pricing, so you know what’s included before work starts.
Clear pricing & inclusions
Pricing is broken down across labour, materials and scope, so there’s less confusion about what has and hasn’t been allowed for.
Same crew on site
Work is completed by ASPEX sealers, not subbed further — the same people who understand our finish standard and how the job needs to be handed over.
Proper prep before sealant
Joints are cleaned, backed and prepared properly before sealant goes in. This is where a lasting seal actually starts.
Finish checks & documentation
We check the finish, tidy up defects, and supply fire caulking or QA documentation where it forms part of the scope.
Clean handover
We leave the area clean and finished, ready for the next trade or handover — no messy edges or joints left half done.
What builders say
Trusted on site
We had Sebastian seal the perimeter of our kitchen flooring after a renovation, particularly where the timber meets the skirting. The result is excellent, a clean and consistent line throughout with barely a visible join. Communication was clear and reliable from start to finish, and the work was done to a high standard. Would happily use Aspex Caulking again for future projects.
Daniel Bryan
Kitchen flooring perimeter — home renovation
Great job, very clean and a great finish to the house. Thank you Seb.
DDS Diamonds
Commercial client
House finish
Great experience with Sebastian from Aspex Caulking during our home renovation in Magill. Excellent caulking and sealing around our timber flooring, skirting boards, kitchen islands and wet areas. The Beach Oak colour match with the Travertine silicone was perfect. Great attention to detail and a very clean finish. Highly recommend!
Santiago Botero
Timber flooring, skirting & kitchen island — home renovation, Magill
We noticed some mould building up around the shower silicone in our Norwood home and wanted it sorted properly rather than just patched over. Sebastian from Aspex Caulking came out promptly, gave us a quote on the spot, and had it done within the week. All the old silicone was removed and replaced cleanly, looks brand new. He was punctual and professional throughout, which we really appreciated. Happy to recommend him to anyone in the area.
Will Upton
Shower re-seal — Norwood
Common questions
What builders ask us
How do you price your work?
We price against the scope, joint type, access requirements and system specification — no lump-sum guesswork. Send drawings or the site address and we’ll come back with clear, itemised pricing before work starts.
When can you start?
Depends on the size of the job and our current program. Smaller or staged work can often be scheduled within 1–2 weeks; larger commercial jobs typically need more notice. Once confirmed, we hold the date.
Do you work around other trades?
Yes — this is standard. Internally we prefer to be the last trade through a wet area, following the builder’s clean. Externally we coordinate with site supervisors around the sequence, including on occupied or partially completed sites.
How do you handle fire-rated sealing compliance?
We install to tested and certified systems only, matched to the penetration type and required FRL. Every penetration is tagged and recorded, and we supply a documentation pack — installation records and product data sheets — for the project compliance file.
Can you provide QA documentation?
Yes — batch numbers, product data sheets and coverage records where the project QA file needs them, supplied without chasing.
What happens if a joint isn’t ready for us?
We flag it rather than seal over a problem — damp substrate, missing backing rod, or a detail that doesn’t match the spec. Better to raise it before the bead goes in than have it come back on the defect list.
Still not sure? Send us the job details and we'll come back with pricing.
Need a caulking sub who turns up?
Call for pricing, or send the job details and we'll come back to you the same day.