Construction and new-build mastic in Petts Wood, Greater London
Mastic packages for new-build and refurbishment projects in Petts Wood and across Greater London. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Caulk cracking where joints are moving more than expected
- Missed perimeter joints on a new elevation
- New external sealant already peeling away
Construction mastic for businesses in Petts Wood
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Construction mastic for commercial buildings in Petts Wood
Mastic tends to be one of the final packages before handover, which puts it right on the critical path. We work as a mastic subcontractor to main contractors and developers. If you have early adhesion failures on new external joints and a mastic package split between trades with no clear owner, we can put it right, whatever the surface. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Petts Wood is the same: the right product in a properly prepared joint.
Around Petts Wood, as across London, much of the work is refurbishing existing buildings as well as building new ones. Replacement windows, recladding and fit-outs leave perimeter and facade joints to seal, often next to people still using the building, so tidy, well-planned work matters.
Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.
- Where
- Petts Wood (BR5, BR6, BR2)
- Region
- Greater London
- Guarantee
- 12 months on our workmanship
- Quotes
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
After the work
Keep the joints in good shape with a few simple steps:
- Keep scrapers and abrasive pads off new beads
- Protect sealed areas from following trades
- Record the products used in the O&M file
- Don’t force external sealing on a damp or frosty day
Tell the builders’ clean team which areas have new sealant. Blades and abrasive pads are the commonest cause of damage at the final clean.
Snag items left to the last week put handover at risk. Clearing snags area by area spreads the work out.
Why it’s worth doing now in Petts Wood
When a package runs over budget, downgrading the product is a common first thought. A failed joint in the defects period costs far more than the product difference. Where an alternative is genuinely suitable, we will say so. Failed sealant in a building in Petts Wood can quickly affect neighbours, tenants or the floor below. Putting it right early is less disruptive than dealing with the consequences.
The product called for affects the cost, as does the preparation each joint needs, such as cutting out, priming or new backing rod. Access, phasing and site rules also count.
Why clients in Petts Wood choose us
- Fixed quotes based on photos, drawings or a visit
- Specification-led, product-correct work
- Our applicators hold CSCS cards
- Colours confirmed for the specified product
Read our cost guide and how we’re accredited.
Common problems we fix in Petts Wood
On construction sites, joints normally fail early because of when they were sealed, not what was used. If sealant goes in before the last trades are through, it gets knocked, painted over or contaminated.
Site and facilities staff are often the first to spot these:
- Cracks opening in caulked internal joints
- Missed perimeter joints on a new elevation
- External joints sealed in damp or cold conditions that are now failing
- Old sealant on a refurbishment that needs stripping before new work
Hotel extensions and refits, at places such as Bickley Manor Hotel and Restaurant, 0.9 miles to the north-west of Petts Wood, typically run between busy periods, so the sealing is squeezed into short windows.
Comparing quotes
- Their public liability cover
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- Whether primer will be used where the manufacturer specifies it
- What the guarantee covers, and for how long
When something else is needed
We check first that sealant really is the fix. It isn’t the answer for:
- Approving fire stopping as compliant
- Frame gaps too wide for sealant, which the installer needs to correct
- Damage to finishes by other trades after we have sealed
Not sure which it is? You can call the office on 01277 525 020 or email us and we’ll tell you honestly.
What we seal
- Brick and block movement joints
- Floor and skirting junctions
- Sanitary and kitchen joints
- Cladding and panel joints
- Internal decorators’ caulk
- Window and door perimeters
Places near Petts Wood
Also in Petts Wood
Different surfaces, different methods
Kitchens and utility areas
On commercial kitchen fit-outs, hygienic sealants are often specified. Joints are sealed smooth so they’re easy to clean.
Internal decorators’ caulk
Where the specification calls for it, acrylic decorators’ caulk goes on non-moving internal gaps before painting. It’s paintable and suits gaps that don’t move while moving joints need a flexible sealant.
Questions about Petts Wood
Do you take on jobs in Petts Wood where loading and access are tightly controlled?
Yes. Inductions, permits and timed loading are routine for us in London. Say when the building is occupied and when it’s quiet, and we’ll plan accordingly.
Do you take on work at healthcare sites like Princess Royal University Hospital?
Yes. We work in healthcare settings as well as offices and schools. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
Do you guarantee new-build sealant work?
The work is guaranteed for 12 months. Keeping other trades off finished joints prevents most problems.
What’s the quickest route to a quote?
The quote form is the simplest route, though you can also speak to us on 01277 525 020 or use the quote form. Photos, drawings or a joint schedule help us quote quickly.
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.
Can you work while the building is occupied?
Yes, as long as we plan it. Tell us your site hours and access windows and we will plan around them.
Can fire-rated sealing at service penetrations be included?
Fire-rated sealing at service penetrations and linear gaps can be included where specified. Record requirements are confirmed at quote stage.
Mastic packages on Petts Wood sites
As part of Greater London, Petts Wood 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 a number of hotels within about 2 miles of Petts Wood. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up.
Further education sites such as Bromley College (to the west of Petts Wood) are extended and refurbished from time to time, with mastic often programmed into the summer break. New units and refits on sites such as Halo Business Park, 1.5 miles east of Petts Wood, need their panel and perimeter joints sealed to the specification.
Petts Wood is about 1 mile west of Orpington, in Greater London. We cover Petts Wood and the rest of Greater London, with the same fixed quotes and 12-month guarantee as everywhere else. Our Greater London coverage takes in 764 places, from busy centres to rural villages. Our London page has more on work in that area (11 miles or so).
If you need construction mastic in BR5, BR6 and BR2, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Streets here include Tent Peg Lane, Ryecroft Road and Beaumont Road. Nearby places we also cover include Crofton (1 mile south), Broom Hill (1 mile south-east), Southborough (1 mile west), Locksbottom (1 mile south-west) and Bromley Common (2 miles west). A short drive away, we cover London (11 miles north-west), City of Westminster (13 miles north-west), Marylebone (13 miles north-west), Kensington (14 miles north-west), St Pancras (13 miles north-west) and Shoreditch (12 miles north-west).
Local landmarks in Petts Wood
In Petts Wood, that means premises near Jubilee Country Park, Bromley High School and Daylight Inn and the streets around them. There’s a railway station in Petts Wood itself: Petts Wood station. Well-known places in the area include Bridgeways Day Hospital (1.5 miles west) and Crofton Roman Villa (1.2 miles south-east). The countryside around Petts Wood includes The Warren and Summer Hill.
How a job runs
The first thing on site is a walk round with your contact, to confirm the scope, the order of work and any areas we must keep clear. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. For a job in Petts Wood, access comes first: booked loading, goods lifts, the building’s permit system and a spot to keep materials. Send the building rules and access times with your enquiry.
- First we look at the scope on site or from drawings.
- You receive a fixed quote covering scope, products and sequence.
- Site paperwork is confirmed and our CSCS-carded applicators are inducted.
- Sealing follows the programme as areas are released.
- 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.
Before we start on site
- Tell staff and tenants when we will be in
- Tell us which areas need to stay in use
- Send asbestos survey details if the building is pre-2000
Get a fixed quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. For smaller jobs, photos and a description will do.