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

Facade and window perimeter sealing in Capel, Surrey

Looking for facade sealing in Capel? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.

  • Damp patches beside frames after rain
  • New sealant peeling off old mastic
  • Failed sealant on precast panel joints
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
12-month guarantee on our workmanship.
London, the South East & Scotland
Constructionline member
£5m PL insurance

Facade sealing for Capel sites

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Facade sealing for commercial buildings in Capel

We are often asked to look at water coming in around frames. Very often the perimeter bead has cracked or lost its grip, though that isn’t the only cause. We’ll tell you if we think the leak is coming from somewhere sealant won’t fix. If you have leaks at window and door perimeters and failed seals around shopfront and entrance frames, we can put it right. Searching for sealant specialists in Capel? Mastic Doctor has worked for contractors, FMs and building owners since 2005, CHAS accredited and a Constructionline member.

Around smaller places like Capel, building work typically means conversions of farm buildings, a few new houses or an extension to a hall or school. Each still needs a proper mastic package: window perimeters, facade joints and internal sealant to the specification.

Building owners and contractors get the same cover: a 12-month guarantee on our workmanship. It doesn’t extend to damage, faults in the building or work by others, and we’re upfront about that.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Capel (RH5)
Wider area
Surrey
Cover
12 months on every job
Quotes
A fixed quote before we start
Call
01277 525 020
Updated
3 November 2026

On site: what to expect

When we get to site, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before anything is cut or cleaned, with the work itself typically taking anything from a single day to several weeks, depending on joint lengths, access and the weather. Smaller jobs around Capel can be grouped with others nearby. You will have a fixed quote before work starts.

  1. We look at the joints, the drawings and the access before pricing.
  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. 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

  • Send asbestos survey details if the building is pre-2000
  • Point out any areas we must not close
  • Tell staff and tenants when we’ll be in

Ask for a quote

Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to phone 01277 525 020 or use the quote form with what you know.

Ask for a quote

Related advice

Cost factors for facade joints

To price the job, we consider:

  • The total length or number of joints
  • How accessible the joints are
  • Backing rod, priming and other preparation
  • Location, for remote and island sites

Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you’ll have a fixed figure to work with.

Details that help us quote

A good diagnosis starts with the right details. Tell us:

  • The product your specification calls for
  • How the joints are reached, and at what height
  • The type of building and who uses it
  • Drawings or a marked-up plan, if available

Quotes are fixed against the scope you send, so the cost is agreed before work starts. To start the process, call the office on 01277 525 020 or email the details over.

Building and refurbishing in Capel

Capel lies roughly 26 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. Capel 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.

On a healthcare site such as Horsham Hospital, 5.6 miles to the south of Capel, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully. When a school such as Scott Broadwood CofE Infant School is extended or refurbished, the mastic package is often squeezed into the holidays.

Capel is about 5 miles south of Dorking, in Surrey. Any commercial site in Capel is covered. 379 places across Surrey fall within our area, including Capel. Sites around Brighton have their own page, roughly 24 miles from Capel.

We cover the RH5 postcode districts. Among the streets we cover are The Street, Laundry Way and Bakers Way, and sites on any of them can send details for a fixed quote. Just outside Capel, we also work in Ockley (2 miles west), Beare Green (2 miles north), Paynes Green (2 miles south-west), Kingsfold (2 miles south) and Holmwood Corner (3 miles north). Bigger towns within reach include Guildford (13 miles north-west), Epsom (13 miles north), Horley (7 miles east), Redhill (9 miles north-east), Ewell (14 miles north) and Reigate (8 miles north-east).

Local landmarks in Capel

For rail, the closest station is Ockley station, roughly 0.6 miles west. Well-known places in the area include Horsham Hospital (5.6 miles south). Open spaces near Capel include Leith Hill and Warnham LNR.

Map of Capel © OpenStreetMap contributors

When to bring in a specialist

For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.

Redoing a failed joint typically costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.

Questions we are asked in Capel

Is Capel off your patch?

Not at all: smaller places are covered as well as towns. Our area covers London and the South East counties. Send photographs and a list of what needs doing, and we’ll plan the job to need as few trips as possible.

Can you take on a job at a hospital such as Horsham Hospital?

Yes, healthcare and care buildings are part of our work. We follow the site’s permits, sign-in and infection-control procedures in every area.

Can you handle several sites?

Yes. Multi-site work and planned programmes are a core part of the service, planned site by site to suit how each building is used.

How long do sealant joints last?

Nobody can honestly give a figure in years, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.

Is your workmanship covered by a guarantee?

Yes. It runs for twelve months and covers how we prepared and sealed the joints, but not damage, misuse or other trades’ work.

Can you send site paperwork?

Requirements differ from site to site, so list what you need, whether RAMS, insurance or CSCS details, and we will confirm with the quote.

Are you CHAS accredited and on Constructionline?

Yes. Mastic Doctor is CHAS accredited and a Constructionline member.

Owners, agents and contractors

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Sites in Capel can sit alongside others in a wider programme across Surrey.

For main contractors, we work as the sealant subcontractor, on new build and refurbishment alike. We work to your programme, your specification and your site rules.

Different surfaces, different methods

Perimeter joints at frames and structure

The joint around a framed system, where it meets the structure, needs sealant. We seal those perimeter joints.

Render and coated surfaces

Where the joint will be painted over, a paintable hybrid or PU sealant may suit. The choice depends on the specification and finish.

When it isn’t the sealant

Not every problem is a sealant problem, and we’d rather tell you before you spend money. It won’t fix:

  • Render or concrete edges that have broken away
  • Movement beyond what any sealant can handle
  • Providing access systems for the work

If you are not sure, just speak to us on 01277 525 020 or email the details over and we’ll give you a straight answer before you book.

What we seal

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

Trusted. Accredited. Insured.