Construction Mastic in Avery Hill
Planning work on a mastic package in Avery Hill? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Snag items on joints that need redoing before handover
- Frame gaps too wide for sealant alone
- Different trades sealing to different standards
Construction mastic for Avery Hill sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
When it isn’t the sealant
We seal joints; we don’t mend everything behind them. Sealant alone won’t deal with:
- Specifying the product where the designer hasn’t
- Defective windows, doors or glazing units (the supplier or installer’s job)
- Rework caused by others damaging completed areas
If in doubt, give us a call on 01277 525 020 or email the details over and we’ll say what we think before you book.
Surfaces we seal
- Cladding and panel joints
- Floor and skirting junctions
- Brick and block movement joints
- Internal decorators’ caulk
- Sanitary and kitchen joints
- Window and door perimeters
Construction mastic in Avery Hill
The specification and the programme set the job. If a product is named, that’s what goes in; any alternative we suggest is put to you before anything changes. Backing, primer and depth follow what the sealant maker sets out, so the joints perform as the designer intended. The enquiries we see most involve mastic snags holding up handover and oversized or tapered gaps around new frames, across sanitary and kitchen joints, window and door perimeters and internal decorators’ caulk. Whoever orders the work in Avery Hill, the brief is usually the same: a clear scope, tidy work and joints that don’t fail again.
The ULEZ covers the whole of Greater London, so contractors’ vehicles on a job in Avery Hill must meet its standards or pay the daily charge. Add booked delivery slots and limited storage, and a London mastic package needs planning before the first bead.
We stand by our work: 12 months, guaranteed. It covers how we prepared and applied the sealant, and if something we did falls short, we return to it.
- Place
- Avery Hill (SE9, DA15, DA16)
- Region
- Greater London
- Guarantee
- 12 months on every job
- Quotes
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Your questions answered
Will you take on work at estates like Green Lane Business Park, close to Avery Hill?
Yes. Our area takes in Avery Hill and its surroundings, with estates and business parks such as Green Lane Business Park included. To start, just speak to us on 01277 525 020 or email us with the unit, the joints involved and your access times.
Could you schedule work at a campus like University of Greenwich - Avery Hill for the vacation?
Yes. Education sites typically want the work in vacations or in phases during term, and we plan to suit. We’re CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.
Do you have public liability insurance?
Yes. We are fully insured, and the certificate can go with your quote.
What site paperwork can you supply?
Each site asks for different documents, so list what you need, whether RAMS, insurance or CSCS details, and we’ll confirm with the quote.
Do you use the sealant named in the specification?
We follow the specified sealant, and we’ll raise it if something in it doesn’t suit the joint. Specifications often reference BS EN 15651 or BS 6213.
Do you do fire-rated sealing on new builds?
It can be part of the package where specified. Tell us what records you need and we will confirm with the quote.
Do your applicators hold CSCS cards?
We are CHAS accredited and a Constructionline member, and our applicators hold CSCS cards. We confirm any paperwork you need with the quote.
What happens if it’s left?
Some packages split mastic across the window fitter, kitchen fitter and plumber. The result tends to be uneven finishes and arguments about who should seal what. A single mastic package gives one point of responsibility. Repeat call-outs disrupt occupied London buildings, so cutting the old sealant out fully and doing it right once is the better route.
Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits.
Why us?
- Matching to RAL references, product permitting
- Commercial sealant work since 2005
- 12 months’ guarantee on every job
- Clear, fixed quotes
Take a look at what affects the cost or how we’re accredited.
Maintenance after handover
A few simple habits keep the new joints working:
- Use the product the specification names
- Note which sealant went where at handover
- Don’t schedule sealing before decorators and flooring are done
- Check frame gaps are within the sealant’s range before sealing
Expect some settlement in the first months. Flexible sealants in the right joints handle normal movement while rigid fillers and caulk can crack where movement is larger. If that happens, let us know.
Oversized gaps are a problem better caught early. Sealant stretched over an oversized gap won’t last. We raise them during our first walk of the area.
Doing it in-house
Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.
Site maintenance staff can often handle a short internal joint. 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.
From enquiry to sign-off
Before we leave any area, we remove the tape, clean down and inspect every joint, ready for your sign-off. If an area should be left alone while the sealant cures, we say how long and put signs out. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. Let us know about any on-site parking or loading arrangements when you send the job details.
- First we look at the scope on site or from drawings.
- A fixed quote sets out scope, products and phasing.
- 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.
What we need from you
- Point out any areas we must not close
- Let us know about inductions and permits
- Share your working hours and any access restrictions
Get a fixed quote
A handful of photographs and a postcode is the fastest way to a quote. Upload them with the quote form, or call the office on 01277 525 020 or use the quote form to discuss it first.
Related advice
Sites and facades in and around Avery Hill
A 2-mile radius around Avery Hill takes in a number of hotels. When hotels extend or refit, the work is normally squeezed between peak periods, mastic included. Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in Avery Hill. Deliveries are booked and storage is tight, so mastic materials come in as needed.
For contractors refurbishing units at places like Green Lane Business Park, 1.2 miles south-west of Avery Hill, the mastic covers cladding panels, roller-door and window perimeters. When a college such as Rose Bruford College (to the south-east of Avery Hill) builds or refurbishes, the mastic package normally has to fit around students and staff. On a campus such as University of Greenwich - Avery Hill, under half a mile to the south of Avery Hill, new teaching buildings and residences are normally built and refurbished around the academic year.
Avery Hill is about 1 mile north-east of Eltham, in Greater London. Looking for construction mastic in Avery Hill? We can help, as we do across Greater London. Across Greater London, 764 places are covered, including Avery Hill. We also cover London, some 8 miles away.
We take on mastic packages across the SE9, DA15 and DA16 postcode area, for business premises of every kind. We cover commercial and managed buildings on Bexley Road, Glenure Road and Perpins Road and the roads nearby. Main routes into Avery Hill include the A210. We also cover Blackfen (1 mile east), Eltham (1 mile south-west), New Eltham (1 mile south), Falconwood (1 mile north-east) and Well Hall (1 mile west) for mastic packages. Nearby towns on our patch include London (8 miles north-west), City of Westminster (11 miles north-west), Marylebone (11 miles north-west), Kensington (12 miles west), St Pancras (10 miles north-west) and Shoreditch (8 miles north-west).
Landmarks near Avery Hill
Around Avery Hill, our work takes us to commercial buildings near Shoulder of Mutton Green and Alderwood Primary School. Avery Hill’s nearest station is Falconwood station, about 0.6 miles north of the centre. Nearby you’ll also find Greenwich Castle (3.8 miles north-west) and Metropolitan Police Museum (1.7 miles south-east). The countryside around Avery Hill includes Summer Hill and The Tarn.
How the quote is worked out
There’s no standard rate for sealant work, since sites vary so much. What we look at:
- The total length or number of joints
- Site requirements such as inductions and permits
- How much existing material needs removing
- Location, for remote and island sites
The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a quote and we will explain how it’s made up.
What to include in your enquiry
However big the job, these details speed things up:
- Rough lengths or quantities, or drawings if you have them
- A wide shot and a close-up of the area
- The asbestos register, for older buildings
- Any dates the work must fit around
A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Send what you have, and we’ll arrange a site visit if anything is unclear.