New Malden construction mastic
Planning work on a mastic package in New Malden? We assess it, carry out the work and guarantee our workmanship for 12 months.
- New external sealant already peeling away
- Inconsistent sealant finishes from plot to plot
- Failed sealant in an existing building being refurbished
Construction mastic for New Malden sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Quoting for work in New Malden
Sealant work doesn’t have a standard rate, because every site is different. What we take into account:
- Backing rod, priming and other preparation
- Any access equipment needed
- The total length or number of joints
- Working within restricted access windows
The product called for affects the cost, and so does the preparation. Access, phasing and site rules also count.
Before you send an enquiry
A good diagnosis starts with the right details. Let us know:
- How the joints are reached, and at what height
- Asbestos survey details if the building is older
- Your programme or deadline
- The site address and postcode
Every quote starts with the facts: the joints involved, quantities, access and the product called for. Share whatever details you have and we will fill any gaps with a visit.
Construction mastic in New Malden, done properly
Most of the packages we price run well beyond frames: frame perimeters inside and out, caulking to trims and boards where the specification calls for it, sanitary silicone, kitchens, and the final snag list. One contractor for all of it keeps the responsibility in one place. If you are dealing with early adhesion failures on new external joints and sealant knocked or painted over by other trades, we can help, on cladding and panel joints, window and door perimeters and internal decorators’ caulk alike. For commercial sealant work in New Malden, you deal with one contact from quote to sign-off, whether it’s one building or several.
Building sites in London tend to be tight: limited storage, booked deliveries and access shared with other trades. Mastic is usually one of the last trades on each elevation or floor, so we keep to the programme and the order of trades the site sets.
The 12-month guarantee covers our workmanship: the preparation, the sealing and the tooling. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.
- Location
- New Malden (KT3, KT1, SW20)
- Wider area
- Greater London
- Guarantee
- 12 months on every job
- Quotes
- Quoted before any work starts
- Call
- 01277 525 020
- Updated
- 3 November 2026
Nearby places to New Malden
Also in New Malden
Site staff or a sealant specialist?
Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
Certain joints really need a specialist: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. A poor seal in places like these tends to cost more to put right later.
Why it’s worth doing now in New Malden
A quick bead over a damaged joint can get an area past inspection. New sealant laid on old or dirty sealant has nothing to bond to and the defect reappears in the defects period. We cut out and redo the joint properly. Getting scaffold, permits or access booked in New Malden takes effort, so it makes sense to deal with every failing joint while access is in place.
Every site prices differently: joint size, product, access and site hours all play a part. Send the details and a fixed figure follows.
Why clients in New Malden choose us
- Clear, fixed quotes
- 12 months’ guarantee on every job
- Constructionline member
- One contact handling all your sites
See how commercial sealant jobs are priced and our accreditations.
Aftercare for building managers
After handover, a little attention goes a long way:
- Check frame gaps are within the sealant’s range before sealing
- Get the mastic subcontractor involved early in the programme
- Record the products used in the O&M file
- Bring the mastic contractor in after the last trades are through
Expect some settlement in the first months. Flexible sealants in the right joints handle normal movement. We can advise if a joint needs a different product.
External joints sealed in poor weather are a common cause of early failure. Holding off until conditions suit avoids callbacks.
Honest limits
Our job is the joint, not everything around it. Sealant alone won’t deal with:
- Specifying the product where the designer hasn’t
- Glazing units that are cracked or misted
- Frame gaps too wide for sealant, which the installer needs to correct
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.
What we seal
- Floor and skirting junctions
- Sanitary and kitchen joints
- Brick and block movement joints
- Internal decorators’ caulk
- Window and door perimeters
- Cladding and panel joints
Questions we’re asked in New Malden
Can you work at a site such as Shannon Commercial Centre, by New Malden?
Yes. Our area takes in New Malden and its surroundings, with estates and business parks such as Shannon Commercial Centre included. Photos and a short description are enough for a first look.
Do you take on jobs in New Malden where loading and access are tightly controlled?
Yes, most London buildings have access rules of some kind, and we plan around them. Send the building rules and access times with your enquiry.
What guarantee comes with a mastic package?
Our workmanship carries a 12-month guarantee from sign-off. The guarantee covers our work, not later damage by other trades.
Who decides which product is used?
A specification, where there is one, decides it. If there isn’t one, it comes down to the joint: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
Can staff carry on working while you’re here?
In the majority of cases, yes. Phased work can be planned so areas stay in use.
Can you handle several sites?
Yes. Several buildings can share a single quote, with one point of contact.
How do you work with the site programme?
Our work is sequenced around the programme. Areas are sealed as they’re released by the site team, and we will raise anything that holds the work up.
Construction mastic in New Malden: the local picture
New Malden has a good number of hotels close by, all within 2 miles. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up. Site traffic in New Malden falls within London’s ULEZ, like everywhere else in Greater London. Add booked deliveries and tight storage, and the mastic package needs planning with the site team.
Further education sites such as Interprime College London, 0.5 miles south-east of New Malden, are extended and refurbished from time to time, with mastic often programmed into the summer break. Extensions at sites like New Victoria Hospital (to the north-east of New Malden) usually sit beside working departments, and the mastic follows strict access rules. On a campus such as Kingston University, which lies north-west of New Malden, new teaching buildings and residences are normally built and refurbished around the academic year.
New Malden is about 3 miles south-west of Wimbledon, in Greater London. New Malden sits inside our coverage and the rest of Greater London, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. We work across 764 places in Greater London. We also cover London, some 10 miles away.
Postcode districts covered here: KT3, KT1 and SW20 for mastic packages. We cover commercial and managed buildings on High Street, Ashcombe Square and Melrose Gardens and the roads nearby. With the B283 nearby, New Malden is straightforward for us to reach. Nearby places we also cover include Motspur Park (1 mile north-east), West Barnes (1 mile east), Norbiton (1 mile north-west), Coombe (1 mile north) and Raynes Park (1 mile east). A short drive away, we cover London (10 miles north-east), City of Westminster (9 miles north-east), Marylebone (9 miles north-east), Kensington (7 miles north), St Pancras (11 miles north-east) and Shoreditch (12 miles north-east).
Local landmarks in New Malden
In New Malden, that means premises near Beverley Park, The Glasshouse pub and Holy Cross School, among other places. New Malden has its own railway station: New Malden station. A little further out are Chessington Castle Hill (3.3 miles south) and Bentall Centre (1.9 miles west). Green spaces nearby include Rose Walk and Kingston Hill Road area.
How a job runs
On arrival, we sign in, go through any site induction and check how permits are handled. Floors, finishes and fittings next to the joints are covered before any cutting starts, and the work usually takes as long as the agreed sequence needs, which comes down to joint lengths, access and handover dates. Most London premises stay occupied while we are on site, so zones and timings are agreed with whoever manages the building. Areas are handed back as each section is finished.
- We price from the drawings, specification and programme you send.
- You receive a fixed quote listing scope, products and phasing.
- You tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we confirm it with the quote.
- Work follows the programme, area by area, as rooms and elevations become ready.
- Each joint is prepared, backed to depth and sealed in the product the specification names.
- Snags are cleared before handover and completed areas carry our 12-month guarantee.
Getting the site ready
- Tell us which areas need to stay in use
- Let us know about inductions and permits
- Let building users know which areas are affected
Quotes
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.