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All Sealants Ltd provides commercial mastic pointing and sealant contracting across South Wales. We support construction programmes, new-build residential developments, commercial fit-outs and refurbishment packages with consistent joint finishes, clear communication and reliable attendance around other trades — including Cardiff, Newport, Cwmbran and surrounding sites.
Commercial mastic and sealant services
We deliver measured sealing packages rather than one-off domestic call-outs. Scope is agreed against drawings, specifications or a site walkthrough so site managers and quantity surveyors know what is included before work starts.
Typical commercial work includes commercial mastic pointing, commercial silicone pointing, new-build plot and apartment packages, office and retail fit-outs, industrial and commercial buildings, and internal or external joint sealing on refurbishment programmes. For external envelope packages we also act as commercial external sealant contractors across South Wales.
- Commercial mastic pointing and silicone pointing
- New-build kitchens, bathrooms and sanitary packages
- Window and door perimeter sealing
- External render, cladding and panel joints
- Expansion and movement joints
- Internal finishing for offices, retail and washrooms
- Remedial reseals and snagging support
New-build and housing development packages
House builders and developers use us for handover sealing across phases — kitchens, bathrooms, floors, frames and external joints kept consistent from plot to plot. For a focused overview of handover scope, see our new-build mastic sealant services.
We work to site programmes, attend when preceding trades are ready, and return for snagging where sealant work forms part of the handover checklist.
Who we work with
Enquiries typically come from principal contractors, house builders, developers, subcontractors coordinating finishing trades, facilities and property managers, and commercial property owners planning a refurbishment or fit-out.
If you are appointing a sealant subcontractor for South Wales, we can review your tender pack and confirm coverage, programme fit and product approach before prices are locked.
Commercial tenders and project information
Send the detail you already have. The clearer the brief, the faster we can respond with a usable quote or a list of clarification questions.
- Project location and postcode
- Drawings, specification or tender documents (PDF)
- Programme dates or required start window
- Approximate metres, joint schedule or plot count if known
- Required sealant specification or performance grade
- Site induction, access and welfare requirements
South Wales coverage
We are based in Ystradfellte near Aberdare and regularly travel for commercial sealing across South Wales. Cardiff, Swansea and Newport are core markets for new-build and fit-out work, with regular attendance in Bridgend, Neath, Port Talbot, the Vale of Glamorgan and Caerphilly.
West of the region we cover Llanelli, Carmarthen and wider Carmarthenshire where programme and package size make commercial attendance practical. Local domestic and external pages such as mastic sealant Cardiff and silicone renewal Swansea sit alongside this commercial service for mixed-use or nearby scopes.
Why contractors choose All Sealants
Sealing is our trade, not a side task. Site teams use us when they need neat, consistent joints, reliable scheduling around other trades, and a contractor who can handle larger packages without losing finish quality.
We quote from drawings or a clear written scope, keep communication with site managers straightforward, and aim for finishes that pass snagging rather than generating callbacks. Examples of completed work appear in our project gallery, and builders can also read our notes on commercial mastic pointing in Cardiff and Newport.
Trusted by contractors & developers
A selection of organisations we work with across domestic and commercial sealing projects.
Commercial sealant FAQ
Do you undertake commercial mastic work across South Wales?
Yes. All Sealants Ltd carries out commercial mastic and silicone sealing across South Wales, including Cardiff, Swansea, Newport, Bridgend, Neath, Port Talbot, Llanelli, Carmarthen and surrounding areas.
Do you quote for construction tenders?
Yes. Send project location, drawings or specification, programme dates, approximate metres or joint schedule if known, and any site requirements. We review tender packs and respond with a commercial quote or callback.
What areas of South Wales do you cover?
We regularly work across Cardiff, Swansea, Newport, Bridgend, Neath, Port Talbot, the Vale of Glamorgan, Caerphilly, Llanelli, Carmarthen and Carmarthenshire, from our base in Ystradfellte near Aberdare.
Can you work on new-build developments?
Yes. We provide new-build mastic packages for house builders and developers — kitchens, bathrooms, window and door perimeters, floors and external joints ahead of handover, including multi-plot programmes.
Can contractors send drawings or specifications for quotation?
Yes. Upload PDFs via the commercial tender form or include links in your enquiry. Clear drawings and a joint schedule help us price accurately and confirm exclusions early.
What information do you need to price commercial sealant work?
Project location, type of work (new-build, fit-out, refurbishment or external), approximate scope or metres, required start date or programme, sealant specification if known, and any site induction or access constraints.