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

Mastic sealing for building owners and managing agents in Horley, Surrey

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

  • Estate-wide sealant that is simply worn out
  • Complaints coming in block by block
  • Draughts at frames across a block
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
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
Constructionline member
£5m PL insurance

Need mastic sealing in Horley?

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

Mastic sealing in Horley, done properly

Across Horley and the rest of Surrey, we work the same way: send details, get a fixed quote, we seal, and the work is guaranteed. A list of buildings, a few photos and approximate joint numbers are enough for a quick quote or we can visit. If you have a mix of products and colours from past repairs and damaged joints in communal entrances and corridors, we can put it right. Looking for mastic applicators who cover Horley? Mastic Doctor has worked for contractors, FMs and building owners since 2005, with CSCS-carded applicators.

In a town such as Horley, buildings managed by agents and landlords range from flats over shops to small blocks and offices. Window and door perimeters, external joints and communal areas all need their mastic renewed from time to time.

The 12-month guarantee is for workmanship rather than wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we are clear about what is covered before work starts.

Where
Horley (RH6)
Wider area
Surrey
Guarantee
A 12-month guarantee
Price
Fixed quote, scope in writing
Telephone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

FAQs: Horley

Can one quote cover a number of our buildings near Horley?

Yes. Planned programmes across a building, block or estate are a core part of this service. Residents are given notice through you, and the work moves building by building.

We manage a building near Horley station. Can you help?

Yes, we work for agents, landlords and housing associations with blocks of every size. Give us the building’s details and say how residents are notified, and we’ll quote and plan to suit.

How many days will you need on site?

It depends on the scope, but the work usually takes anything from a day to a few weeks, depending on the number of buildings and joints. For bigger or phased jobs, we’ll set out a timescale with the quote.

What guarantee do you give on resealing?

A 12-month guarantee covers our work. It covers our workmanship, not later building movement, damage or frame failures.

Do you work for managing agents and housing associations?

Yes. Most of our mastic sealing is for agents, factors, housing associations and portfolio landlords, and we quote building by building or as a programme.

How do you choose the sealant?

Where there’s a specification, we use the product it names. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.

How do you handle work on occupied blocks?

Occupiers stay in the building throughout. We flag any areas that need internal access well before the dates so it can be arranged.

What happens if it’s left?

Resealing ahead of leaks keeps it to a maintenance task. After water has got in, there may be damp, damaged plaster or decoration to put right too, and the complaints come with it. In Horley, as anywhere, the simplest time to fix a failed joint is before it leaks. After a leak, there’s drying, repairs and redecoration on top.

Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.

Why clients in Horley choose us

  • Clear, fixed quotes
  • Colour agreed before work starts
  • 12-month guarantee on workmanship
  • Work to your specification and the manufacturer’s guidance

See our cost guide or our accreditations and insurance.

Different surfaces, different methods

Planned maintenance

Adding mastic to planned maintenance avoids reactive repairs and spreads the work.

Communal areas

Entrance doors, screens and corridor junctions in communal areas all have sealant joints. Fresh joints make shared areas look looked after.

Commercial clients in Horley

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.

Main contractors use us as their sealant subcontractor. Programme, specification and site rules come first, and our applicators hold CSCS cards.

What we can’t put right

Honesty saves time and money. New sealant won’t cure:

  • Cracked or crumbling render, brick or stone at the joint edges (we will tell you if so)
  • Misted or failed double-glazed units
  • Failed window or door frames, which need a window contractor

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

Joints and surfaces we work on

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

From enquiry to sign-off

We schedule the visit to fit the site hours and access windows you give us. While we’re working, the area stays contained and tidy, and your contact hears from us before we move to the next area. For a town like Horley, we try to group jobs for the same client into one visit, with one quote covering them. Tell us when the building is open and we’ll plan to suit.

  1. First comes a look at the joints and, for older buildings, the asbestos records.
  2. The products and programme are set out in a fixed quote.
  3. Failed mastic is removed completely.
  4. The joints are prepared and resealed with the right product.
  5. We finish each building before moving to the next.

Preparing the site

  • Share your working hours and any access restrictions
  • Tell staff and tenants when we’ll be in
  • Point out parking and an unloading spot

Get a fixed quote

Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we will return a fixed quote you can plan around. If you have questions first, call 01277 525 020 or email the details over.

Get a price

Related advice

Mastic sealing in Horley: the local picture

Central London is about 22 miles from Horley. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres; their frame mastic often ages block-wide. Horley sits in one of the drier corners of the country, the South East. Outside mastic still needs a dry joint and the right temperature, while the elevations that take the most sun tend to show hardened mastic first.

Landlords with units on estates such as Gatwick Business Park, 1.3 miles south-west of Horley, can bring frame, door and external mastic across several units into one programme. Blocks of flats and mixed-use buildings often cluster around stations such as Horley station (to the south-east of Horley) and their window and balcony mastic tends to age at the same rate across a building. If your remit includes a building such as Horley Infant School, frame and door mastic can be programmed for the holidays.

Horley is about 5 miles north of Crawley, in Surrey. Horley sits inside our coverage and the rest of Surrey, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. 379 places across Surrey fall within our area, including Horley. For work in that direction, see our London page, about 22 miles away.

We take on mastic joints across the RH6 postcode area, whatever the building. We cover commercial and managed buildings on Station Road, High Street and Church Road. Horley sits on or close to the A23 and B2036, useful when we plan access and materials. Close to Horley, our area also takes in Hookwood (1 mile south-west), Fernhill (2 miles south-east), Burstow (2 miles south-east), Smallfield (2 miles east) and Shipley Bridge (2 miles south-east). Further afield, our area takes in Epsom (12 miles north), Redhill (4 miles north), Ewell (13 miles north), Reigate (4 miles north), Caterham (8 miles north-east) and Dorking (8 miles north-west). As one of the bigger centres in Surrey, Horley has a broad mix of commercial, public and industrial buildings, and we cover them all.

Near you in Horley

Around Horley, our work takes us to commercial buildings near The Bull pub and Oakwood School, among other places. For rail, the closest station is Horley station, about 0.8 miles south-east of the centre. Nearby you will also find Reigate Castle (4.5 miles north) and East Surrey Hospital (2.8 miles north). For a walk, there’s Reigate Heath.

Map of Horley © OpenStreetMap contributors

General trades versus a specialist

Some joints are best left to specialists: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. A poor seal in places like these tends to cost more to put right later.

A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

Accreditations

Trusted. Accredited. Insured.