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

Facade and window perimeter sealing in Charlwood, Hampshire

Our CSCS-carded applicators take on facade joint and window perimeter sealing on commercial buildings in Charlwood and the surrounding area. Send details for a fixed quote.

  • Air leaks through failed facade joints
  • Discoloured or dirty facade joints
  • Old perimeter mastic that has dried out
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
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Facade sealing in Charlwood

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 Charlwood

Facade joints are the line of defence between the weather and the building fabric. Once a perimeter seal fails, water tracks in around frames and panels. We remove failed sealant and install a new bead chosen for the joint and how far it moves. We work on cladding panel joints, shopfront frames and window and door perimeters, and the failures we are asked to look at most are failed sealant on precast panel joints and discoloured or dirty facade joints. Looking for mastic applicators who cover Charlwood? Mastic Doctor has worked for contractors, FMs and building owners since 2005.

Sites around smaller places like Charlwood can be a fair drive from suppliers, so we come with everything the package needs. Send drawings or photos and the programme and we will quote to suit.

The 12-month guarantee covers our workmanship: preparation, application and finish. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Charlwood (SO24)
Region
Hampshire
Guarantee
12 months on every job
Quotes
A fixed quote before we start
Call
01277 525 020
Last updated
3 November 2026

On site: what to expect

We follow your site rules from the start: signing in, inductions and any permit to work. With the paperwork done, the joints are worked through in the order agreed with your site contact, and each area is checked before we leave it. For a building around Charlwood, tell us how to find it and who will meet us. Send that with the details and we’ll confirm the plan with the quote.

  1. Photos, drawings or a visit tell us about the joints and the access.
  2. Product choice follows the joint’s movement and substrate.
  3. Failed beads are removed in full and the joint faces cleaned.
  4. Primer goes on where the product data asks for it.
  5. Rod goes in to fix the depth, then the joint is sealed and tooled.
  6. We go over the completed work with you before leaving.

Preparing the site

  • Explain the parking and delivery arrangements
  • Tell staff and tenants when we’ll be in
  • Make sure the joints can be reached

Getting a fixed quote

A handful of photos and a postcode is the fastest way to a quote. Upload them with the quote form, or speak to us on 01277 525 020 or email us if you’d rather talk the job through.

Get a price

Read more

Mastic packages on Charlwood sites

Charlwood sits in one of the drier corners of the country, the South East. Even so, frost and condensation on steel and glass are common on winter mornings, so external mastic is timed for workable conditions and agreed with the site manager. At about 50 miles from central London, Charlwood is within reach of the capital. Building activity in the commuter belt runs from new flats near stations to business park refurbishments, and main contractors there need mastic that keeps to the programme.

With historic properties like Bentworth Hall (4.8 miles north of Charlwood) in the area, refurbishment work often meets old masonry that needs compatible sealants. New units and refits on sites such as Mansfield Business Park, 2.4 miles north of Charlwood, need their panel and perimeter joints sealed to the specification.

Charlwood is about 6 miles south-west of Alton, in Hampshire. We send applicators to Charlwood for facade joints. Charlwood is one of 723 places in Hampshire on our list. Southampton is covered too, some 19 miles away.

We cover the SO24 postcode districts for facade joints. Close to Charlwood, our area also takes in Monkwood (1 mile south-west), Kitwood (1 mile north-west), Gilbert Street (1 mile north-west), Ropley (2 miles west) and West Tisted (2 miles south-west). A short drive away, we cover Basingstoke (13 miles north), Winchester (12 miles west), Havant (15 miles south), Eastleigh (15 miles south-west), Horndean (12 miles south) and Alton (6 miles north-east).

Local landmarks in Charlwood

A little further out are Alton Community Hospital (4.7 miles north-east). For a walk, there’s Red Hill and Shutts Copse.

Map of Charlwood © OpenStreetMap contributors

Signs you need facade sealing in Charlwood

Adhesive failure, where the sealant peels away from one face, normally comes from poor preparation. Contamination, moisture or skipping the primer the maker specifies leave a weak bond, and the joint opens with the first real movement.

Most enquiries start with one or more of the following:

  • Cold air coming in at window perimeters
  • Weathered facade joints that have lost their grip
  • Gaps between rainscreen or cladding panels
  • Perimeter sealant that has split or peeled away

Extensions at sites like Alton Community Hospital (to the north-east of Charlwood) usually sit beside working departments, and the mastic follows strict access rules.

Comparing quotes

  • How the existing material will be dealt with
  • How joint depth will be controlled
  • How they’ll work around occupants
  • Their public liability cover

Our contractor checklist

Your questions answered

Is a hospital such as Alton Community Hospital somewhere you can work?

Yes. Healthcare sites are among the places we work. Work is phased so departments keep running, under the site’s own rules.

Can you work at a site such as Mansfield Business Park, by Charlwood?

Yes, sites like Mansfield Business Park are within our area, along with the rest of Charlwood. Send details of the unit and the work through our quote form for a quick quote.

What will the job cost?

We don’t publish prices, because every site is different. Send photos or drawings and we will price it at a fixed figure.

Are you CHAS accredited?

Yes. We are CHAS accredited, we’re a Constructionline member and we use CSCS-carded applicators.

Do you work to architects’ specifications?

Yes. The specification and the manufacturer’s installation guidance are what we work to.

Do you take on multi-site work?

Yes. Multi-site work and planned programmes are a core part of the service, with each site phased to suit its occupants.

Do you offer coloured sealant?

In many cases, yes. Sealants are made in a wide range of standard colours, and matching to RAL references or nearby finishes is commonly requested. We’ll confirm the colours available for the specified product.

Keeping the joints sound

Keep the joints in good shape with a few simple steps:

  • Check the asbestos register before old mastic is disturbed
  • Note when each elevation was last resealed
  • Keep pressure washers away from fresh sealant
  • Insist on a full cut-out when joints are renewed

Anything drilled through a facade joint breaks the seal. Make sure the joint is resealed afterwards with a compatible product.

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

Site staff or a sealant specialist?

Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.

A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

For managing agents and facilities managers

Hospitality, education, healthcare, office and retail clients book us directly too. We plan around the way the building is used, so the building keeps working while we do.

Planned maintenance programmes are welcome: working through a building or an estate in stages that fit your budget. Sites in Charlwood can sit alongside others in a wider programme across Hampshire.

What sets the cost

What shapes the price:

  • Quantities, in metres or numbers
  • Travel to remote or island sites
  • Joint width, depth and condition
  • Working within restricted access windows

Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.

Sending details for a quote

However big the job, these details speed things up:

  • Access details, including height
  • Your programme or deadline
  • The postcode of the building
  • A wide shot and a close-up of the area

Tell us about the building, the joints and when you need the work done, and we’ll put a fixed quote together. The easiest way is to give us a call on 01277 525 020 or use the quote form.

Accreditations

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