
Facade and window perimeter sealing in Upstreet, Kent
Facade sealing in Upstreet, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.
- Hard, chalky sealant that no longer flexes
- Leaks at window and door perimeters
- Gaps between rainscreen or cladding panels
Facade sealing for businesses in Upstreet
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
How we handle facade sealing in Upstreet
Every facade quote starts with how the joints will be reached. Let us know what access exists or is planned, and any site rules we need to work around. Site teams most often ask us about water coming in around window frames and new sealant peeling off old mastic, across stone and brick facade joints, perimeter joints where frames meet the structure and window and door perimeters. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Upstreet is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.
In the countryside around places like Upstreet, conversion schemes put new frames into old stone, flint, brick or timber. Those joints need a sealant that suits an uneven, sometimes porous surface, and often a colour chosen for the building.
Our workmanship is guaranteed for 12 months, in Upstreet as everywhere else we work. If our installation lets you down in that time, we return and fix it.

- Location
- Upstreet (CT3)
- Region
- Kent
- Guarantee
- A 12-month guarantee
- Quotes
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
What we can’t put right
A few problems need another trade or a different fix, and we point that out rather than sealing over them:
- Leaks from roofs, gutters or failed flashings rather than sealant joints
- Arranging specialist high-level access, which is planned with the client
- Installing or repairing glazing systems
If in doubt, call 01277 525 020 or send details through our quote form and we will say what we think before you book.
Where we work in Upstreet
- Stone and brick facade joints
- Cladding panel joints
- Shopfront frames
- Coping and flashing joints
- Perimeter joints where frames meet the structure
- Window and door perimeters
Looking after the joints
Problems stay small when the joints are checked regularly. Specifically:
- Investigate damp beside windows promptly
- Never let anyone seal over old sealant
- Add perimeter sealant to planned maintenance checks
- Record the product and colour used on each elevation
Look at perimeter and panel joints as part of routine building checks. Watch for splits, gaps at the edges, hardening and discolouration; record the locations.
Coordinate facade sealing with other external works. Sharing the access keeps the cost down.
Our process
Where the site stays busy, we agree a sequence with your contact so the disruption stays in one area at once. Each section is protected, cleaned back and sealed, then handed back before the next one starts. Rural sites near Upstreet may need directions, gate codes or a contact on site. Add it to your enquiry and we’ll build it into the plan.
- Photos, drawings or a visit tell us about the joints and the access.
- We confirm the joint type, movement and the specified product.
- Failed beads are removed in full and the joint faces cleaned.
- Primer goes on where the product data asks for it.
- Rod goes in to fix the depth, then the joint is sealed and tooled.
- We go over the completed work with you before leaving.
Getting the site ready
- Tell us which areas need to stay in use
- Let building users know which areas are affected
- Confirm the product named in the specification
Getting a fixed quote
Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price the work to it. Smaller jobs need nothing more than photos and a few notes.
Advice
When to call us in Upstreet
Adhesive failure, where the sealant peels away from one face, typically comes from poor preparation. Contamination, moisture or skipping the primer the maker specifies leave a weak bond.
Clients typically get in touch after noticing something like this:
- Failed seals around shopfront and entrance frames
- Air leaks through failed facade joints
- Hard, chalky sealant that no longer flexes
- Gaps between rainscreen or cladding panels
School extensions, at buildings such as Chislet Church of England Primary School, normally run to the summer holidays, mastic included.
Questions to ask before you book
- Their plan for phasing and protecting the area
- How the existing material will be dealt with
- Will RAMS and insurance details be available?
- The named product and why it was chosen
Leave it or put it right?
The longer a failed joint is left, the more the substrate suffers: wet edges break down, so repairs may be needed before resealing. Early action keeps it simple. Older rural buildings around Upstreet move with the seasons, and rigid or tired sealant can’t keep up. A sealant with the right movement capability, correctly sized, lasts far better.
Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote.
Why choose Mastic Doctor in Upstreet
- Old sealant cut out, never sealed over
- Clear, fixed quotes
- Fully insured, including public liability cover
- Health and safety: CHAS accredited
Read how commercial sealant jobs are priced and how we’re accredited.
Should maintenance staff do it?
Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we will confirm the paperwork you need with the quote.
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.
Your questions answered
Is a hospital such as St Martins Hospital somewhere you can work?
Yes, healthcare and care buildings are part of our work. Each area is agreed with the ward or department and the estates team in advance.
Is a smaller place like Upstreet outside your area?
Not at all. Upstreet is within our area. London and every South East county are within our area. Good photographs up front let us bring everything on the first visit.
Is it okay to overlay old mastic?
No. A bead run over old sealant soon lifts. Our method is a full cut-out, cleaning, backing and a new bead.
Do we need an asbestos check before resealing?
For older buildings, yes, check before work starts. The duty to manage asbestos sits with the dutyholder. If asbestos is suspected, work stops until it is tested.
Can weather delay the job?
It can, for external work. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.
Do you seal facades in winter?
We can work through the year, but sealant needs a dry joint and temperatures within the product’s range. Frost and condensation on glass and steel are common on winter mornings, and we build that into the programme.
Can you send site paperwork?
Let us know which documents the site needs, such as RAMS, an insurance certificate or CSCS details, and we will confirm them with the quote.
Towns and villages near Upstreet
Other services in Upstreet
Contractors’ notes for Upstreet
Upstreet is about 57 miles from central London. Building activity in the commuter belt runs from new flats near stations to business park refurbishments, so mastic packages have to keep pace with busy programmes. Upstreet is in the South East, one of the UK’s drier regions. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, so we time external mastic for dry faces and agree it with the site team.
Recladding or extending a unit at a site like Canterbury Industrial Park, 1.3 miles south-west of Upstreet, brings panel joints and frame perimeters into the programme. New wings at hospitals like St Martins Hospital (to the south-west of Upstreet) bring long runs of window and panel joints to seal.
Upstreet is about 4 miles south-east of Herne Bay, in Kent. Our applicators travel to Upstreet for work on facade joints. Across Kent, 931 places are covered, Upstreet among them. Sites around London have their own page, about 57 miles away.
Commercial sites across CT3 are covered for facade joints. Streets here include St Mary's Gardens, Becketts Wood and Grove Ferry Hill. We also cover Grove (1 mile south), West Stourmouth (2 miles east), Sarre (2 miles north-east), Preston (2 miles south-east) and East Stourmouth (2 miles east). Bigger towns within reach include Canterbury (6 miles south-west), Margate (9 miles north-east), Dover (14 miles south), Ramsgate (9 miles east), Broadstairs (10 miles east) and Whitstable (8 miles west).
Landmarks near Upstreet
In Upstreet, that means premises near Grove Ferry Picnic Area, Spires Academy and The Grove Ferry Inn and the streets around them. The nearest railway station is Sturry station, about 3.8 miles south-west of the centre. A little further out are St Martins Hospital (5.2 miles south-west). Open spaces near Upstreet include West Blean and Thornden Woods.