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

Facade Sealing in Hamsey

We carry out facade joint and window perimeter sealing on commercial buildings in Hamsey and the surrounding area. Send details for a fixed quote.

  • Patch repairs that keep failing
  • Cold air coming in at window perimeters
  • Damp patches beside frames after rain
1
Send details
Photos, drawings or a schedule, or we 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
CHAS accredited
Fully insured: £5m PL

Need facade sealing in Hamsey?

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

Facade sealing for commercial buildings in Hamsey

Access is part of every facade job, and we plan it with you before quoting. Let us know what access exists or is planned, and any site rules we need to work around. We work on window and door perimeters, cladding panel joints and shopfront frames, and the failures we’re asked to look at most are cladding panel joints that have opened up and failed seals around shopfront and entrance frames. Most enquiries from Hamsey start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.

For a site near Hamsey, the mastic visit is planned so the right sealants, primers and backing rod are on hand. Drawings, photographs and the programme let us give a fixed quote.

We stand by our work: 12 months, guaranteed. That covers our preparation and application, and if something we did falls short, we return to it.

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Hamsey (BN8)
Wider area
East Sussex
Guarantee
12 months on every job
Price
A fixed quote before we start
Phone
01277 525 020
Updated
3 November 2026

Doing it in-house

There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.

Redoing a failed joint usually costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

Maintenance after handover

Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. We suggest:

  • Confirm the survey covers external sealants in older buildings
  • Keep the sealant details on the building file
  • Inspect facade joints on a regular cycle
  • Report water ingress at frames as soon as it shows

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.

Use each reseal to correct the joint: the right width, backing rod and a sealant with enough movement capability. A well-designed joint lasts longer than a like-for-like copy of a failed one.

FAQs: Hamsey

Can you work on a hospital site such as Lewes Victoria Hospital?

Yes, hospitals are one of the sectors we cover. Work is phased so departments keep running, under the site’s own rules.

Do you cover business parks and estates near Hamsey, such as Malling Industrial Estate?

Yes. Our area takes in Hamsey and its surroundings, with estates and business parks such as Malling Industrial Estate included. Photos and a short description are enough for a first look.

Do you have public liability insurance?

Yes. Mastic Doctor is fully insured, public liability included.

How do I request a quote?

The quote form is the simplest route, though you can also give us a call on 01277 525 020 or email drawings and photos. Include photographs or drawings if you have them.

Does weather matter for sealant work?

Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.

Do you provide access for facade work?

That varies with the building and the access on offer. Share what access exists or is planned when you send details, and we’ll agree the approach together.

Will your applicators have CSCS cards?

Yes. Should the site need card details in advance, let us know and we will send them with the quote.

How a job runs

In a busy building, 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 we move to the next. Jobs in and around smaller places like Hamsey are normally planned as a single visit, so photographs and measurements up front really help. Then the right materials arrive with us.

  1. Access, site rules and timing are settled with the client up front.
  2. We only seal when joints are dry and within the product’s temperature range.
  3. Each joint is cut out and the edges inspected.
  4. Faces are cleaned, primed where needed and backed.
  5. Sealant is gunned in and tooled hard onto both faces.
  6. We hand over with our 12-month workmanship guarantee.

What we need from you

  • Let building users know which areas are affected
  • Clear stock, furniture or equipment away from the joints
  • Have the specification and drawings to hand

Quotes

Need a figure for a tender or a budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. For a chat about it beforehand, speak to us on 01277 525 020 or use the quote form.

Get a quick quote

Read more

Do you need facade sealing in Hamsey?

The wrong product causes its share of trouble: acetoxy-cure silicone may mark stone or corrode certain metals, and an interior product won’t last outdoors. Neutral-cure, facade-grade products are what most external joints need.

It’s worth sending us details if you spot any of the following:

  • Draughts around frames and panels
  • Failed sealant on precast panel joints
  • Leaks at window and door perimeters
  • Facade joints cracked through the middle

For contractors refurbishing units at places like Malling Industrial Estate, 1.3 miles to the south-east of Hamsey, the mastic covers cladding panels, roller-door and window perimeters.

Comparing quotes

  • Is depth set with backing rod, or bond-breaker tape in shallow joints?
  • Will RAMS and insurance details be available?
  • The terms of the workmanship guarantee
  • Health and safety accreditation such as CHAS

Our contractor checklist

Mastic packages on Hamsey sites

Hamsey is in the South East, one of the UK’s drier regions. That doesn’t stop wet spells, or frosty starts that leave panels too damp to seal, so the external programme keeps a little slack. Hamsey lies roughly 42 miles out 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.

Building work at universities like University of Sussex (4.4 miles south-west of Hamsey) is often timed for the summer, mastic included. When a school such as Hamsey Community Primary School is extended or refurbished, the mastic package is often squeezed into the holidays.

Hamsey is about 1 mile north of Lewes, in East Sussex. Hamsey sits inside our coverage, with the same fixed quotes and 12-month guarantee as everywhere else. Hamsey is one of 308 places we cover in East Sussex. Sites around Brighton have their own page, about 7 miles away.

If you need facade sealing in BN8, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. We also cover Offham (1 mile south-west), South Malling (1 mile south), Lewes (1 mile south), Cliffe (2 miles south) and Southover (2 miles south). Nearby towns on our patch include Eastbourne (14 miles south-east), Seaford (9 miles south-east), Hailsham (11 miles east), Crowborough (13 miles north-east), Uckfield (7 miles north-east) and Newhaven (7 miles south).

What’s near Hamsey

In Hamsey, that means premises near Railway Land, Priory School and The Blacksmiths Arms. For rail, the closest station is Cooksbridge station, roughly 0.8 miles north-west of the centre. Well-known places in the area include Lewes Castle (1.6 miles south) and Lewes Victoria Hospital (1.5 miles south). For a walk, there’s Malling Down and Offham Hill.

Map of Hamsey © OpenStreetMap contributors

What we can’t put right

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

  • Leaks from roofs, gutters or failed flashings rather than sealant joints
  • Providing access systems for the work
  • Movement beyond what any sealant can handle

Not sure which it is? You can call 01277 525 020 or use the quote form and we will tell you honestly.

What we seal

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

Surface by surface

Window and door perimeters

Frames grow and shrink with temperature, and the perimeter joint has to follow. Rod placed at the right depth lets the bead stretch as the frame moves.

Render and coated surfaces

Paintable sealants exist for joints that will be coated. We confirm the product with you before starting.

Accreditations

Trusted. Accredited. Insured.