Paddington construction mastic
Work needed on a mastic package in Paddington? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Early adhesion failures on new external joints
- A mastic package split between trades with no clear owner
- Mastic snags holding up handover
Construction mastic across Paddington
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Doing it in-house
General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.
Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
Construction mastic for commercial buildings in Paddington
The programme rarely stands still, so the mastic package has to flex with it. The sequence is set with the site team and updated as plots or floors are handed over, so applicators arrive when areas are genuinely ready. That keeps the work right first time and saves rework. If you have new external sealant already peeling away and cracks opening in caulked internal joints, we can put it right, on sanitary and kitchen joints, floor and skirting junctions and window and door perimeters alike. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Paddington, preparation and product choice get the time they need.
Around Paddington, as across London, much of the work is refurbishing existing buildings as well as building new ones. New frames, overcladding and fit-outs all end in perimeter and facade joints, frequently with occupants close by.
Our workmanship is guaranteed for 12 months, wherever the site is. If our installation lets you down in that time, we return and fix it.
- Where
- Paddington (W2, W1H, W1U)
- Wider area
- Greater London
- Guarantee
- 12 months on our workmanship
- Quotes
- Quoted before any work starts
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
On site: what to expect
Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Any old material is cut back to clean, sound faces, primer goes on where the manufacturer specifies it, and the sealant is tooled off neatly. Planning a London job such as one in Paddington starts with access. Send the building rules and access times with your enquiry.
- We walk the site or review drawings to understand the package.
- You receive a fixed quote covering scope, products and sequence.
- Paperwork is agreed and applicators are inducted on site.
- We seal plot by plot or floor by floor in line with the programme.
- Any frame gaps or issues outside our scope are flagged to the site team.
- The package is closed out, snags cleared and backed by our 12-month guarantee.
What we need from you
- Warn occupants and staff about the work
- Tell us which areas need to stay in use
- Explain the parking and delivery arrangements
Request a quote
A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Share whatever details you have and we will fill any gaps with a visit.
Advice
What sealant work can’t fix
A proper diagnosis includes knowing what sealant can’t do. We will tell you if the real problem is any of the following:
- Designing joint widths or choosing the specification (that sits with the designer)
- Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
- Damage to finishes by other trades after we’ve sealed
If you are not sure, just ring 01277 525 020 or email the details over and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Sanitary and kitchen joints
- Floor and skirting junctions
- Window and door perimeters
- Internal decorators’ caulk
- Brick and block movement joints
- Cladding and panel joints
Questions we’re asked in Paddington
Can you work in a London building with booked loading and goods-lift slots?
Yes. Booked loading bays, goods lifts and permit-to-work systems are normal for London jobs. Send the building rules and access times with your enquiry. All of Greater London is inside the ULEZ, and our planning allows for it
Can you work around term dates at a campus such as Imperial College London?
Yes. We plan campus work around teaching, exams and residence turnarounds. We are CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.
Are you CHAS accredited?
We’re CHAS accredited and a Constructionline member, with CSCS-carded applicators. Public liability insurance of five million pounds is in place too.
Do you guarantee new-build sealant work?
The work is guaranteed for 12 months on the workmanship. Keeping other trades off finished joints prevents most problems.
Do you take on mastic snagging only?
Yes. We clear snags by redoing joints rather than patching them.
Do you seal on top of existing sealant?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.
Do you work to architects’ specifications?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and we raise anything unclear before work begins.
Towns and villages near Paddington
What else we do in Paddington
Facades, frames and programmes in Paddington
As part of Greater London, Paddington is inside the ULEZ, which applies to every van on site. Deliveries are booked and storage is tight, so mastic materials come in as needed. There are plenty of hotels within about 2 miles of Paddington. Hotel extensions and refits normally have to fit around bookings, so mastic dates are tight.
For a contractor at a hotel such as Belvedere Hotel, less than half a mile south of Paddington, the mastic often has to be finished before a reopening date. For a contractor working at a hospital such as St Mary's Hospital, which lies west of Paddington, perimeter and facade sealing is planned around patients and deliveries. When units on a site such as Brompton Cross District Shopping Centre., 1.6 miles south of Paddington, are refurbished or reclad, the panel joints and window perimeters are part of the mastic package.
Paddington is about 1 mile west of City of Westminster, in Greater London. Any commercial site in Paddington is covered, whether it’s a single job or part of a planned programme. 764 places across Greater London fall within our area, Paddington among them.
Business premises anywhere in W2, W1H and W1U are within our area for mastic packages. Among the streets we cover are Harrow Road, Craven Road and Harbet Road. Access to Paddington is via the A5 and A40 among other routes. Close to Paddington, our area also takes in Paddington Green (1 mile north-west), Hyde Park Estate (1 mile south-east), Connaught Village (1 mile south-east), Tyburn (1 mile south-east) and Little Venice (1 mile north-west). Nearby towns on our patch include London (4 miles east), Shoreditch (4 miles east), Walthamstow (8 miles north-east), Hoxton (4 miles east), Whitechapel (4 miles east) and Ruislip (11 miles west).
Landmarks near Paddington
Recent enquiries here include premises near Royal Society of Medicine Library, Fountains Abbey pub and Royal Parks of London, among other places. Nearby too are North Westminster Community School (less than half a mile north-east) and Hampden Gurney CofE Primary School (under half a mile east). There’s a railway station in Paddington itself: London Paddington station. A little further out are Harrods (1.3 miles south) and London Toy & Model Museum (0.5 miles south-west). Green spaces nearby include Greville Place nature reserve and The Long Water.
Why act early in Paddington
Patching snags as they appear can feel quicker than a proper close-out. A planned sweep of each plot or floor catches the lot in one go. We can run snagging as its own phase before handover. Access in London is hard enough to arrange once, so while access is arranged it pays to renew all failing joints, not just the worst.
Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you will have a fixed figure to work with.
Why clients in Paddington choose us
- Fixed quotes based on photos, drawings or a visit
- Colours confirmed for the specified product
- Products installed to the manufacturer’s instructions
- One phone line for London, the South East and Scotland
Take a look at our cost guide or our accreditations.
For managing agents and facilities managers
Hotels, schools, healthcare sites, offices and retail units book us directly too. The work is planned around how the building runs, so the building keeps working while we do.
CHAS accredited and a Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.
Maintenance after handover
After handover, these steps help:
- Share drawings and the specification as soon as possible
- Record the products used in the O&M file
- Ask cleaners to use soft cloths around fresh sealant
- Put any product change through the designer first
Our 12-month guarantee covers the workmanship from sign-off. The guarantee covers how we sealed, not later damage by other trades which is why protection after sealing matters.
Leaving the mastic snag list to the end squeezes everyone. A planned close-out through each area as it completes keeps the list short.