Ashburton construction mastic
We carry out mastic packages for new-build and refurbishment projects in Ashburton and the surrounding area. Send photographs or drawings for a fixed quote.
- Sealant knocked or painted over by other trades
- Oversized or tapered gaps around new frames
- Window and door perimeters that won’t pass inspection
Construction mastic in Ashburton
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
When it isn’t the sealant
Honesty saves time and money. Fresh joints won’t solve:
- Faulty frames rather than failed sealant
- Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
- Designing joint widths or choosing the specification (that sits with the designer)
Not sure which it is? You can call the office on 01277 525 020 or email the details over and we’ll tell you honestly before you book.
Where we work in Ashburton
- Internal decorators’ caulk
- Window and door perimeters
- Cladding and panel joints
- Brick and block movement joints
- Floor and skirting junctions
- Sanitary and kitchen joints
Construction mastic in Ashburton, done properly
On refurbishments, the mastic package normally includes cutting out old sealant as well as sealing new work. Existing joints have to be stripped back to sound faces, because fresh sealant can’t key into cured silicone. New and existing joints then get the same preparation. Site teams most often ask us about failed sealant in an existing building being refurbished and cracks opening in caulked internal joints, across sanitary and kitchen joints, window and door perimeters and internal decorators’ caulk. A specialist sealant contractor works differently from a general builder: in Ashburton, that means joint design, primers and backing rod as standard.
Around Ashburton, 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.
Every job we finish is backed by a 12-month workmanship guarantee. If our installation lets you down in that time, we return and fix it.
- Location
- Ashburton (CR0, SE25, CR9)
- Region
- Greater London
- Guarantee
- A 12-month guarantee
- Price
- Quoted before any work starts
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Places near Ashburton
Also in Ashburton
Why act early in Ashburton
A cheaper sealant can look like an easy saving on a large package. A failed joint in the defects period costs far more than the product difference. Where an alternative is genuinely suitable, we will say so. Getting scaffold, permits or access booked in Ashburton takes effort, so while access is arranged it pays to renew all failing joints, not just the worst.
Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.
What you get with us
- 12 months’ guarantee on every job
- One number for every site we cover
- Over 20 years of commercial sealing
- Clear, fixed quotes
Read what affects the cost and our accreditations.
Aftercare for building managers
Cleaning and maintenance staff play a part too. Share these points with them:
- Release areas for mastic once other trades have finished in them
- Flag uneven or tapered frame gaps early
- Note which sealant went where at handover
- Ask for joint and product checks before the package is urgent
Our 12-month guarantee covers the workmanship from sign-off. Damage by others isn’t a workmanship fault, so protecting sealed areas matters.
Sealing outside when the joint is damp or too cold leads to poor adhesion. Holding off until conditions suit avoids callbacks.
Ashburton: questions and answers
Can you work around term dates at a campus such as Spurgeon's College?
Yes, holiday working periods are the norm on campus jobs. Let us know which documents your site asks for, and we will confirm them alongside the quote.
Can you cope with the access rules in a London building?
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. We allow for the ULEZ, which covers every borough
Do you take on small jobs?
Whatever the size, the process is the same: send details, get a fixed quote, we seal, guaranteed.
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: its movement, its surfaces and what it has to cope with.
Can you send site paperwork?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote.
Can one quote cover more than one building?
Yes. Multi-site work and planned programmes are a core part of the service, with each site phased to suit its occupants.
Does weather affect external mastic work?
External mastic depends on conditions: the joint needs to be dry and within the product’s temperature range. We plan external elevations with that in mind.
When to bring in a specialist
For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
Surface by surface
External facade and movement joints
Many facade substrates need a primer before sealing. We prime where the manufacturer specifies and work only when conditions suit.
Kitchens and utility areas
On commercial kitchen fit-outs, hygienic sealants are often specified. We follow the specification and seal to a smooth, cleanable finish.
Contractors’ notes for Ashburton
There are plenty of hotels within about 2 miles of Ashburton. Hotel extensions and refits usually have to fit around bookings, so mastic dates are tight. As part of Greater London, Ashburton is inside the ULEZ, which applies to every van on site. Delivery slots and scarce storage shape how and when the mastic goes in.
School extensions, at buildings such as St Thomas Becket Catholic Primary School, usually run to the summer holidays, mastic included. Work at a hotel such as Croydon Park Hotel, 1.4 miles south-west of Ashburton, tends to be programmed around bookings, mastic included. When a college such as Spurgeon's College (to the north-west of Ashburton) builds or refurbishes, the mastic package normally has to fit around students and staff.
Ashburton is about 6 miles south of New Cross, in Greater London. If you are looking for construction mastic in Ashburton, we can help. Ashburton is one of 764 places in Greater London on our list. For work in that direction, see our London page.
Business premises anywhere in CR0, SE25 and CR9 are within our area. Buildings on Long Lane, Tudor Road and Coe Avenue are within our area for mastic packages. Sites close to Ashburton are covered too, including Woodside (1 mile north), Addiscombe (1 mile south), Shirley Oaks (1 mile south-east), Monks Orchard (1 mile south-east) and Shirley (1 mile south-east). Bigger towns within reach include London (8 miles north), City of Westminster (9 miles north-west), Marylebone (10 miles north), Kensington (10 miles north-west), St Pancras (10 miles north) and Shoreditch (10 miles north).
Landmarks near Ashburton
In Ashburton, that means premises near Oasis Academy Shirley Park, Ashburton Park and The Beehive pub. The nearest railway station is Norwood Junction station, about 0.7 miles north-west of the centre. Well-known places in the area include National Psychosis Unit (1.7 miles east) and Whitgift Centre (1.6 miles south-west). The countryside around Ashburton includes Duppas Hill and Bramley Bank.
Diagnose, treat, sign off
Inspect, seal, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then the work is carried out to the specified product and detail, and we finish with a walk round so the work can be signed off. In Ashburton, most buildings stay in use during the work, so we agree zones and timings with the building or facilities manager. Areas are handed back as each section is finished.
- First we look at the scope on site or from drawings.
- A fixed quote sets out scope, products and phasing.
- 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.
Before we start on site
- Send your site hours and access windows
- Arrange parking or a loading space
- Confirm the product named in the specification
Getting a fixed quote
Need a figure for a tender or a budget? We will quote against your scope and drawings you can plan around. For a chat about it beforehand, phone 01277 525 020 or email drawings and photos.