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

Construction Mastic in Holmbury St Mary

Mastic packages for new-build and refurbishment projects in Holmbury St Mary and across Surrey. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • A mastic package split between trades with no clear owner
  • Failed sealant in an existing building being refurbished
  • Perimeter gaps outside the sealant’s range
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
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Construction mastic for Holmbury St Mary sites

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

What sets the cost

Sealant work doesn’t have a standard rate, since sites vary so much. What we look at:

  • Location, for remote and island sites
  • The total length or number of joints
  • How much existing material needs removing
  • The size and state of each joint

We don’t publish prices, since every building and every scope is different. Call for a quote and we’ll price your job on its own details.

What we need to price the job

However big the job, these details speed things up:

  • The postcode of the building
  • Anything awkward about access or site hours
  • A wide shot and a close-up of the area
  • Approximate linear metres or a joint schedule

Specifications, drawings and tender packages are welcome with any enquiry, and we will price the work to it. Smaller jobs need nothing more than photographs and a few notes.

Construction mastic for commercial buildings in Holmbury St Mary

A typical mastic package covers more than window perimeters: external door and window perimeters, internal decorators’ caulk where specified, sanitary joints in bathrooms and washrooms, kitchen worktops and splashbacks, and snagging before handover. One contractor for all of it keeps the responsibility in one place, and one applicator team gives a consistent finish. We work on sanitary and kitchen joints, floor and skirting junctions and window and door perimeters, and what we are called in for most is perimeter gaps outside the sealant’s range and window and door perimeters that won’t pass inspection. A single leaking joint is often how a building in Holmbury St Mary first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Around smaller places like Holmbury St Mary, building work usually means conversions of farm buildings, a few new houses or an extension to a hall or school. Perimeters, facade joints and internal sealant all need doing properly, however small the scheme.

The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.

Where
Holmbury St Mary (RH5)
Wider area
Surrey
Cover
12 months on our workmanship
Quote
Quoted before any work starts
Call
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Our process

A typical day starts with protection: tape along each joint edge and covers over finishes, stock and equipment close by. On site, the work usually takes a few days on a modest refurbishment and longer on multi-plot or multi-storey schemes, and our waste is bagged and taken away as we go. Jobs in and around smaller places like Holmbury St Mary are normally planned as a single visit, so we ask for photographs and rough sizes first. That way the right products come on the day.

  1. We start with the drawings, specification and programme.
  2. We take off quantities and return a fixed quote.
  3. We agree with the site team which areas come first.
  4. Each area is sealed when it’s released.
  5. Every joint is cleaned, set to depth and sealed with the specified product.
  6. After snagging, the work is handed over under our 12-month guarantee.

Getting the site ready

  • Let us know about inductions and permits
  • Point out any areas we must not close
  • Arrange parking or a loading space

Quotes

Photos, drawings or a schedule of the joints are often enough for a fixed quote. Where a site visit makes more sense, we will arrange one.

Get a price

Related advice

When to call us in Holmbury St Mary

A joint without backing rod or bond-breaker often fails early. Bonded to the base of the joint and both sides, sealant can’t stretch evenly.

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

  • External joints sealed in damp or cold conditions that are now failing
  • Sanitary sealant damaged by following trades
  • Window and door perimeters that won’t pass inspection
  • Internal caulk splitting as the building dries out

Older buildings in the area around Holmbury St Mary, such as Polesden Lacey (4.8 miles north of Holmbury St Mary), need care when sealed: the product has to suit soft or historic materials.

What your quote should include

  • Do they follow the manufacturer’s priming guidance?
  • Who will actually carry out the work
  • How long is the guarantee, and what does it include?
  • Their approach to joint depth and backing

Our contractor checklist

How the job changes by surface

Internal decorators’ caulk

Acrylic caulk fills internal gaps around trims, boards and frames ahead of decorating. It’s paintable and suits gaps that don’t move.

External facade and movement joints

Movement joints in the facade are sealed with a product suited to the expected movement. Depth is controlled with backing rod so the bead bonds to two sides only.

Should maintenance staff do it?

Redoing a failed joint normally costs more than getting it right at the outset, because the whole bead must be removed and the faces cleaned back again. That’s why many clients bring in a specialist from the beginning.

For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

Maintenance after handover

Problems stay small when the joints are checked regularly. Specifically:

  • Flag uneven or tapered frame gaps early
  • Keep finished joints away from paint, plaster and scrapers
  • Don’t force external sealing on a damp or frosty day
  • Record the products used in the O&M file

Any damage after we have finished should go on the snag list straight away. Snags can be picked up in a planned close-out visit as agreed in the quote.

Oversized gaps are a problem better caught early. Sealant stretched over an oversized gap won’t last, so the installer needs to correct it first. We flag them as soon as we see them.

Contractors’ notes for Holmbury St Mary

Holmbury St Mary lies roughly 25 miles out from central London. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, which keeps mastic packages in demand. The South East is one of the drier parts of the UK. Winter mornings still bring frost and condensation on frames and panels, so we time external mastic for dry faces and agree it with the site team.

For a contractor at a hotel such as Hurtwood Hotel, which lies west of Holmbury St Mary, the mastic often has to be finished before a reopening date. School extensions, at buildings such as Belmont Prep School, normally run to the summer holidays, mastic included.

Holmbury St Mary is about 5 miles south-west of Dorking, in Surrey. We cover Holmbury St Mary and the rest of Surrey, with the same fixed quotes and 12-month guarantee as everywhere else. Holmbury St Mary is one of 379 places we cover in Surrey. We also cover London, around 25 miles from Holmbury St Mary.

Work on mastic packages is covered throughout RH5. For a building on Horsham Road and Felday Glade or nearby, we can quote for mastic packages. Just outside Holmbury St Mary, we also work in Pitland Street (1 mile south), Peaslake (1 mile west), Farley Green (3 miles west), Ewhurst (3 miles south) and Ewhurst Green (3 miles south). Bigger towns within reach include Guildford (8 miles north-west), Woking (11 miles north-west), Epsom (12 miles north-east), Horley (11 miles east), Redhill (11 miles east) and Ewell (13 miles north-east).

Near you in Holmbury St Mary

Locally, jobs take us to sites close to Wotton and Abinger Commons, The Volunteer pub and Hurtwood House and the streets around them. The closest station to Holmbury St Mary is Gomshall station, roughly 2.1 miles north-west. Other landmarks nearby include Mesolithic Museum (0.7 miles north-east) and Abinger Castle (0.7 miles north-east). Green spaces nearby include Leith Hill and Silent Pool.

Map of Holmbury St Mary © OpenStreetMap contributors

Questions we are asked in Holmbury St Mary

Is Holmbury St Mary too small for you to travel to?

Not at all. Holmbury St Mary is within our area. We work across Greater London and the South East. Send photographs and a list of what needs doing, and we will plan the job to need as few trips as possible.

Which documents can you supply for work in Holmbury St Mary?

We’ll confirm the paperwork you need, such as RAMS, our insurance certificate and CSCS details, with the quote. We hold £5m public liability insurance, are CHAS accredited and a Constructionline member, and our applicators are CSCS-carded.

How do you work with the site programme?

Our work is sequenced around the programme. Each plot, floor or elevation is sealed when it’s ready, and we’ll raise anything that holds the work up.

Is any job too small?

We quote for single jobs as well as large packages and programmes. Photos and a description are enough to start.

How much does the work cost?

That depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a quote and we’ll price it properly.

Can the building stay open while you work?

Yes, as long as we plan it. Tell us your site hours and access windows and we’ll plan around them.

Can the sealant be colour-matched?

Often, yes. Many products come in a range of standard colours, and matching to RAL references or surrounding finishes is often possible. We’ll confirm the colours available for the specified product.

Accreditations

Trusted. Accredited. Insured.