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

Mastic sealing for building owners and managing agents in The Chart, Surrey

We carry out mastic sealing for building owners, managing agents and housing associations in The Chart. Send details for a fixed quote.

  • Damp patches beside frames
  • Draughts at frames across a block
  • Movement joints with sealant missing
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
CHAS & Constructionline
£5m PL insurance

Mastic sealing near The Chart

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

General trades versus a specialist

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.

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.

About our mastic sealing in The Chart

For blocks and buildings in The Chart and across Surrey, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. A list of buildings, a few photographs and approximate joint numbers are enough for a quick quote, and site visits can be arranged. The enquiries we see most involve damp patches beside frames and estate-wide sealant that is simply worn out, across communal entrances and stairwells, shopfronts below residential blocks and balcony and threshold joints. Searching for sealant specialists in The Chart? Mastic Doctor has worked for contractors, FMs and building owners since 2005, with CSCS-carded applicators.

For buildings around smaller places like The Chart, we group work so one trip covers it. Send photos of the frames and joints and we’ll give a fixed quote.

Whoever the client is, the cover is the same: a 12-month guarantee on our workmanship. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
The Chart (RH8)
Wider area
Surrey
Cover
12 months on every job
Quotes
Quoted before any work starts
Phone
01277 525 020
Last updated
3 November 2026

Signs you need mastic sealing in The Chart

Occasionally the substrate fails, not the sealant for example where render or brick edges crumble. We’ll tell you if the joint edges need repairing before resealing.

Any of the following is a good reason to get the joints checked over:

  • No planned programme for sealant
  • A mix of products and colours from past repairs
  • Worn sealant at communal door frames
  • Water getting in round frames after rain

Buildings close to stations like Hurst Green station, 1.6 miles west of The Chart, are often flats over shops, with frame mastic to keep sound.

Comparing quotes

  • Their approach to joint depth and backing
  • Will CSCS-carded applicators be on site?
  • Whether primer will be used where the manufacturer specifies it
  • Will RAMS and insurance details be available?

Questions to ask before you appoint anyone

How a job runs

Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Any old material is cut back to clean, sound faces, primer goes on where the manufacturer specifies it, and the sealant is tooled off neatly. For work around The Chart, we aim to finish in one visit, so we ask for photos and rough sizes first. That way the right products come on the day.

  1. We inspect each building and record the joints that have failed.
  2. The quote is fixed and split as suits you.
  3. Dates and areas are agreed so occupiers can be told.
  4. Failed sealant is removed and the faces prepared.
  5. Joints are resealed and tooled.
  6. We check the finished work and confirm the guarantee.

Getting the site ready

  • Arrange parking or a loading space
  • Have the specification and drawings to hand
  • Send asbestos survey details if the building is pre-2000

Quotes

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 drawings and photos.

Get a price

Advice

Aftercare for building managers

Regular inspection catches problems early. Specifically:

  • Group repairs into a planned programme
  • Have the asbestos survey to hand for older buildings
  • Keep bins and bikes away from communal door frames
  • Make mastic part of routine maintenance checks

Encourage occupiers to report water or draughts at frames. A quick report keeps a small repair small.

Failed mastic often goes unnoticed until heavy rain finds it. Resealing when cracking first shows avoids water damage and the complaints that come with it.

Frames, entrances and external joints in The Chart

The Chart is in the South East, one of the UK’s drier regions. Outside mastic still needs a dry joint and the right temperature, and the sunniest, most exposed sides of a building typically need attention first. At about 18 miles from central London, The Chart is within reach of the capital. Managed blocks of flats are a big part of commuter-belt property, and window and balcony mastic on them tends to age at the same rate.

Older buildings near The Chart, from historic houses such as Chartwell (to the east of The Chart) to more modest stock, need compatible products when frames are resealed. If you’re responsible for a building such as St Andrew's, frame and door mastic needs the same attention as any other property.

The Chart is about 6 miles south-east of Caterham, in Surrey. Commercial clients in The Chart can call on us for mastic joints, as part of our coverage of Surrey. Our Surrey coverage takes in 379 places, from busy centres to rural villages. We also cover London, around 18 miles from The Chart.

If you need mastic sealing in RH8, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Among the streets we cover are Stoneleigh Road, St Andrews Way and Ridlands Lane, and sites on any of them can send details for a fixed quote. We also cover Pains-Hill (1 mile west), Moorhouse Bank (1 mile north-east), Goodley Stock (1 mile east), Limpsfield (1 mile north-west) and Crockham Hill (1 mile south-east) for mastic joints. A short drive away, we cover Epsom (15 miles north-west), Horley (10 miles south-west), Redhill (9 miles west), Ewell (15 miles north-west), Reigate (10 miles west) and Caterham (6 miles north-west).

Local landmarks in The Chart

Recent enquiries here include premises near Carpenters Arms, Oxted School and Hazelwood School. The nearest railway station is Hurst Green station, about 1.6 miles west of the centre. Nearby you will also find Tandridge Priory (0.6 miles north-west). Not far away are Botley Hill and Bay Pond.

Map of The Chart © OpenStreetMap contributors

What we can’t put right

Our job is the joint, not everything around it. On its own, sealant can’t deal with:

  • Substrate edges that need repairing first
  • Broken glass or failed sealed units
  • Materials that need asbestos testing before work

If in doubt, speak to us on 01277 525 020 or send photos by email and we’ll say what we think.

Joints and surfaces we work on

  • Shopfronts below residential blocks
  • Communal entrances and stairwells
  • External wall and movement joints
  • Balcony and threshold joints
  • Communal kitchens and washrooms
  • Window and door perimeters on blocks

The Chart: questions and answers

We manage a building near Hurst Green station. Can you help?

Yes. Managing agents, landlords, property factors and housing associations are who this service is for. Give us the building’s details and say how residents are notified, and we’ll quote and plan to suit.

Is a smaller place like The Chart outside your area?

Not at all. The Chart is within our area. London and every South East county are within our area. Good photographs up front let us bring everything on the first visit.

Do you work to architects’ specifications?

Yes. Send it with your enquiry, and the quote will be based on it, flagging anything that needs clarifying.

How long does a typical visit take?

That varies with the scale of the job, but the work usually takes one or more days per building, depending on the joint lengths and the access. For bigger or phased jobs, we’ll set out a timescale with the quote.

Can you seal joints high up on a block?

It depends on the building. We agree access with you at quote stage so there are no surprises.

Can you plan resealing across several buildings?

We can. We survey and price each building, then work through them in order starting wherever is most urgent.

Do you seal on top of existing sealant?

No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.

Owners, agents and contractors

As a CHAS accredited contractor and Constructionline member, we’re straightforward to vet for your supplier list. We’re fully insured, and our insurance certificate can go with the quote.

We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in The Chart can sit alongside others in a wider programme.

Accreditations

Trusted. Accredited. Insured.