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

Facade and window perimeter sealing in Heart's Delight, Kent

We carry out facade joint and window perimeter sealing on commercial buildings in Heart's Delight. Send photographs or drawings for a fixed quote.

  • Water coming in around window frames
  • Air leaks through failed facade joints
  • New sealant peeling off old mastic
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS accredited
£5m public liability

Facade sealing for Heart's Delight sites

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

About our facade sealing in Heart's Delight

Installing framed glazing systems isn’t part of our work. What we seal are the joints around them: perimeter joints where frames meet the structure, panel joints and window perimeters. If you’re dealing with weathered joints at frame-to-structure perimeters and hard, chalky sealant that no longer flexes, we can help, whatever the surface. One point of contact handles commercial sealant work in Heart's Delight from the first photographs to the final walk-round, whether it’s one building or several.

Conversions of older rural buildings near smaller places such as Heart's Delight bring stone, flint, brick and timber up against new glazing. A product that grips an irregular face, with a colour that suits the building’s character, is normally what’s needed.

We stand behind the joints we seal: 12 months, guaranteed. It covers how we prepared and applied the sealant, and we come back if anything isn’t right.

Mastic Doctor team members lined up next to their branded vans outside an office building
Place
Heart's Delight (CT4)
Wider area
Kent
Cover
A 12-month guarantee
Quote
Fixed quote, scope in writing
Call
01277 525 020
Last updated
3 November 2026

From enquiry to sign-off

We schedule the visit to fit the site hours and access windows you give us. On the day, the work area is kept contained and tidy, and your contact hears from us before we move to the next area. Jobs in and around smaller places like Heart's Delight are usually planned as a single visit, so we ask for photos and rough sizes first. Then the right materials arrive with us.

  1. First we review photographs, drawings or what we saw on a visit, and agree how each joint will be reached.
  2. The old bead is cut away completely, not overlaid.
  3. Joint faces are cleaned to firm, sound material, with primer where the sealant maker specifies it.
  4. Closed-cell rod fixes the depth, and the sealant grips two sides only.
  5. A facade-grade sealant rated for the movement goes in, tooled to a concave profile.
  6. We walk the finished joints with you before handing over.

What we need from you

  • Clear stock, furniture or equipment away from the joints
  • Agree which areas must stay open
  • Let building users know which areas are affected

Ask for a quote

A handful of photos and a postcode is the fastest way to a quote. Send them through the quote form, or give us a call on 01277 525 020 or email the details over to discuss it first.

Get a quick quote

Related advice

Mastic packages on Heart's Delight sites

Heart's Delight sits in one of the drier corners of the country, the South East. That doesn’t stop wet spells, or frosty starts that leave panels too damp to seal, so the external programme keeps a little slack. Heart's Delight is about 58 miles from central London. Towns within reach of London tend to keep building, from flats to offices and schools, and each scheme needs its mastic sealed to programme.

New wings at hospitals like Kent and Canterbury Hospital (to the north-west of Heart's Delight) bring long runs of window and panel joints to seal. New units and refits on sites such as Barham Business Park (to the south of Heart's Delight) need their panel and perimeter joints sealed to the specification. With historic properties like Acrise Place (4.4 miles south of Heart's Delight) in the area, refurbishment work often meets old masonry that needs compatible sealants.

Heart's Delight is about 6 miles north of Hawkinge, in Kent. We cover commercial sites throughout Heart's Delight, for single jobs and planned programmes alike. Our Kent coverage takes in 931 places. We also cover London, around 58 miles from Heart's Delight.

Business premises anywhere in CT4 are within our area for facade joints. For a building on South Barham Road, Green Hills and Railway Hill or nearby, send details and we will quote for facade joints. Nearby places we also cover include Derringstone (1 mile north-east), Barham (1 mile north-east), Gravel Castle (1 mile east), Marley (1 mile north-west) and Out Elmstead (1 mile north). Bigger towns within reach include Ashford (13 miles west), Canterbury (6 miles north-west), Dover (8 miles south-east), Folkestone (8 miles south), Ramsgate (15 miles north-east) and Whitstable (12 miles north-west).

Local landmarks in Heart's Delight

Locally, jobs take us to sites close to Jumping Downs, among other places. Heart's Delight’s nearest station is Snowdown station, about 2.9 miles east of the centre. Nearby you will also find Kent and Canterbury Hospital (5.3 miles north-west).

Map of Heart's Delight © OpenStreetMap contributors

Work for main contractors and building owners

Whether you’re a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Heart's Delight can form part of a wider programme across Kent.

How the quote is worked out

What shapes the price:

  • Induction, permit and paperwork requirements
  • Location, for remote and island sites
  • The product specified
  • Access and working height

There’s no price list, since every building and every scope is different. Call for a quote.

Details that help us quote

Diagnosis starts before we arrive. Let us know:

  • The asbestos register, for older buildings
  • How the joints are reached, and at what height
  • What the building is and how it’s used
  • Approximate linear metres or a joint schedule

We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To start the process, call the office on 01277 525 020 or email a schedule or drawings.

Site staff or a sealant specialist?

Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong usually costs more in the end than doing them right.

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.

When something else is needed

Part of a good diagnosis is knowing where sealant stops. We’ll tell you if the real problem is one of these:

  • Arranging specialist high-level access, which is planned with the client
  • Replacing glass or failed glazing units
  • Cracked or spalling substrates that need repair before sealing

If you are not sure, just ring 01277 525 020 or email a schedule or drawings and we will give you a straight answer.

What we seal

  • Stone and brick facade joints
  • Coping and flashing joints
  • Perimeter joints where frames meet the structure
  • Window and door perimeters
  • Shopfront frames
  • Cladding panel joints

Questions about Heart's Delight

Can you work on a hospital site such as Kent and Canterbury Hospital?

Yes. Healthcare sites are among the places we work. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

Is Heart's Delight too small for you to travel to?

No. Small places get the same service as large ones. We cover Greater London and the counties of the South East. We plan jobs in smaller places so return trips are kept to a minimum.

What type of sealant goes on window perimeters?

Low-modulus, neutral-cure silicone suits many facade and perimeter joints. Hybrid or MS polymer, polyurethane and polysulphide sealants suit others.

Will you check whether the sealant is causing the leak?

Yes. We look at the perimeter sealant and tell you whether it has failed before quoting. Where the cause seems to be elsewhere, we’d rather tell you than reseal pointlessly.

Is your workmanship covered by a guarantee?

Yes. Our workmanship is backed for 12 months on every job.

What will the job cost?

It depends on the job: quantities, access, the product and any phasing. Call for a fixed quote and we will price it properly.

Are your applicators CSCS-carded?

Yes. We use CSCS-carded applicators.

What happens if it’s left?

If access is already up for other work, resealing at the same time makes sense. Coordinating facade sealing with other external works avoids paying for access twice, saving a second set-up. Halls, stores and units around places like Heart's Delight may not be checked every day, so a failed joint can leak for a while before anyone sees it. Resealing early avoids that.

Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote.

Why choose Mastic Doctor in Heart's Delight

  • CSCS-carded applicators
  • Standard and matched colours in many product ranges
  • RAL and finish matching where the product range allows
  • Over 20 years of commercial sealing

See our cost guide or our accreditations and insurance.

Accreditations

Trusted. Accredited. Insured.