The Mastic Doctor team standing beside their branded vans outside an office building
Kent · England

Radfield facade sealing

Facade joint and window perimeter sealing on commercial buildings in Radfield. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • New sealant peeling off old mastic
  • Cladding panel joints that have opened up
  • Air leaks through failed facade joints
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
Constructionline member
£5m PL insurance

Facade sealing for Radfield sites

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

Why it’s worth doing now in Radfield

Failed joints let in more than water: draughts around frames add to heating costs and complaints. Resealing deals with the draught as well as the leak. Converted and older buildings near places like Radfield tend to move, and aged sealant cracks. The right product, sized to the joint, copes much better.

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 appoint us

  • Matching to RAL references, product permitting
  • 12 months’ guarantee on every job
  • Old sealant cut out, never sealed over
  • A range of standard colours, depending on the product

Read what affects the cost and our accreditations.

About our facade sealing in Radfield

Managing agents and owners in Radfield ask us to, we reseal perimeters across whole elevations or a handful of problem windows. Either way, the method is the same: cut out, clean, back, prime where needed and seal. A 12-month guarantee applies to our workmanship. Site teams most often ask us about unsightly perimeter sealant on a visible elevation and sealant pulling away from frames or panels, on stone and brick facade joints, shopfront frames and perimeter joints where frames meet the structure. Looking for mastic applicators who cover Radfield? Mastic Doctor has worked for contractors, FMs and building owners since 2005.

Around smaller places like Radfield, building work normally means conversions of farm buildings, a few new houses or an extension to a hall or school. Perimeters, facade joints and internal sealant all need doing properly, however small the scheme.

The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we are clear about what is covered before work starts.

Location
Radfield (ME9)
Wider area
Kent
Cover
A 12-month guarantee
Quote
A fixed quote before we start
Phone
01277 525 020
Page updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Our process

When we get to site, we report to your site contact and complete whatever induction the building runs. Floors, finishes and fittings next to the joints are covered before anything is cut or cleaned, and the work normally takes longer on a full elevation than on a handful of window perimeters, and it always depends on dry weather. Rural sites near Radfield may need directions, gate codes or a contact on site. Add it to your enquiry and we’ll build it into the plan.

  1. We look at the joints, the drawings and the access before pricing.
  2. Failed sealant is cut out along its full length.
  3. Joint faces are cleaned to firm, sound material, with primer where the sealant maker specifies it.
  4. Backing rod, or bond-breaker tape in shallow joints, limits the depth.
  5. The new sealant goes in and is tooled firmly onto both faces.
  6. The completed runs are checked with you, then the 12-month guarantee applies.

What we need from you

  • Warn occupants and staff about the work
  • Arrange parking or a loading space
  • Let us know about inductions and permits

Request a quote

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.

Get a quick quote

Read more

Should maintenance staff do it?

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.

For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

Common questions from Radfield clients

Do you cover business parks and estates near Radfield, such as Kent Science Park?

Yes. Estates, retail parks and business parks around Radfield, Kent Science Park among them, are all within reach. A few photographs and the unit address let us price the work.

Can you work on a hospital site such as Sittingbourne Memorial Hospital?

Yes, provided the work is planned with the site’s estates team. Work is phased so departments keep running, under the site’s own rules.

Can one quote cover more than one building?

Yes. We take on portfolio and planned maintenance work, planned site by site to suit how each building is used.

Do you need to see the site first?

Many jobs can be quoted from photos, drawings or a joint schedule. If the job needs a look first, we’ll arrange a visit.

Is any job too small?

Small jobs are welcome alongside larger packages. Send details for a fixed quote.

Can the sealant be colour-matched?

It depends on the product. Some ranges offer many colours, others very few, so we’ll confirm the colours available for the specified product with the quote.

Do you run new sealant over the existing bead?

No. Fresh silicone won’t grip cured silicone, so the existing bead is removed entirely and the faces are cleaned before resealing. Nothing else gives a bond that lasts.

Building and refurbishing in Radfield

Radfield sits close to the coast, within about 3 miles. Coastal exposure means perimeter and cladding joints work harder than on an inland job, so we check the specified product suits the exposure before the first bead. The South East is one of the drier parts of the UK. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, so external mastic is timed for workable conditions and agreed with the site manager.

Further education sites such as KITE College (1.9 miles north-west of Radfield) are extended and refurbished from time to time, with mastic often programmed into the summer break. New units and refits on sites such as Kent Science Park (2.9 miles south-west of Radfield) need their panel and perimeter joints sealed to the specification. Hospital estates such as Sittingbourne Memorial Hospital, 2.1 miles west of Radfield, tend to grow and change in phases, often next to occupied wards, so facade and perimeter sealing has to fit the estates team’s plan.

Radfield is about 2 miles east of Sittingbourne, in Kent. Radfield sits inside our coverage and the rest of Kent, with the same fixed quotes and 12-month guarantee as everywhere else. Across Kent, 931 places are covered, Radfield among them. London is covered too, around 40 miles from Radfield.

Work on facade joints is covered throughout ME9. If your building is just outside Radfield, we cover Bogle (1 mile south-east), Tonge Corner (1 mile north), Rodmersham (1 mile south-west), Lynsted (1 mile south) and Bapchild (1 mile south-west). Bigger towns within reach include Maidstone (12 miles west), Ashford (14 miles south), Canterbury (13 miles east), Whitstable (11 miles east), Faversham (5 miles east) and Herne Bay (15 miles east).

Local landmarks in Radfield

In Radfield, that means premises near Sittingbourne Community College and Fox pub. For rail, the closest station is Teynham station, roughly 0.9 miles east of the centre. Well-known places in the area include Bayford Court (2 miles north-west) and Sittingbourne Heritage Museum (1.9 miles west).

Map of Radfield © OpenStreetMap contributors

Keeping the joints sound

Cleaning and maintenance staff play a part too. Share these points with them:

  • Investigate damp beside windows promptly
  • Combine resealing with other works that need access
  • Clear debris that holds water against joints
  • Record the product and colour used on each elevation

Anything drilled through a facade joint breaks the seal. Make sure the joint is resealed afterwards using a matching sealant.

Don’t wait for a full elevation to fail. Small repairs stop small leaks becoming large ones inside the building.

What the job involves on each surface

Precast concrete panels

Concrete edges can be dusty or weak. We clean back to sound material and flag edges that need repair.

Cladding panel joints

Where panels are sealed rather than open-jointed, the bead is part of the weather line. We cut out failed joints along their full length and rebuild them.

For managing agents and facilities managers

Hotels, schools, healthcare sites, offices and retail units book us directly too. We plan around the way the building is used, so guests, pupils, patients or staff are disturbed as little as possible.

Facilities managers want contractors who arrive with the paperwork sorted. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we’ll confirm with the quote.

Accreditations

Trusted. Accredited. Insured.