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

Mastic sealing for building owners and managing agents in Reading

Mastic sealing for building owners, managing agents and housing associations across Reading, by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Movement joints with sealant missing
  • A mix of products and colours from past repairs
  • Draughts at frames across a block
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Mastic sealing in Reading

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

After the work

Cleaning and maintenance staff play a part too. Pass these on to them:

  • Reduce knocks to communal area joints
  • Check the asbestos register before any old mastic is disturbed
  • Log resealing dates block by block
  • Plan resealing building by building rather than complaint by complaint

Where a paintable product was specified, it can be painted after curing. Non-paintable silicone shouldn’t be painted over.

Water getting in round frames can damage plaster, decoration and the frames themselves. Resealing early keeps the job small.

Mastic sealing in Reading, done properly

Different joints need different sealants. Window perimeters and external joints often take a low-modulus neutral-cure silicone, and MS polymer sealants stick well to many substrates and often take paint. We will confirm the colours available for the specified product. If you have estate-wide sealant that is simply worn out and repeated reactive repairs to the same buildings, we can put it right, whatever the surface. A single leaking joint is often how a building in Reading 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.

Mixed-use buildings in big towns such as Reading have flats above, shops below and shared areas in between. Water getting past a failed perimeter joint can reach a neighbour’s flat or a shop below, so it’s worth acting before complaints start.

Our 12-month guarantee is about workmanship, not 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.

Place
Reading (RG6, RG31, RG1, RG30)
Region
Reading
Cover
12 months on every job
Price
Quoted before any work starts
Call
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

From enquiry to sign-off

Occupied buildings need a little choreography. The work area is signed and kept contained, keep walkways clear and work section by section so the rest of the building stays in use. Bigger buildings in Reading are usually done in phases agreed with the site or facilities manager, keeping disruption low. Photos and drawings let us propose a sequence with the quote.

  1. First we look at the mastic on each building and note what needs replacing.
  2. A fixed quote follows, split by block or building if that suits you.
  3. Dates, areas and access are agreed so residents or tenants can be told in advance.
  4. Old sealant is stripped and each face prepared back to firm material.
  5. Backing rod and primer go in where the joint and the product need them, then new sealant is applied and tooled.
  6. Finished joints are looked over and the 12-month guarantee confirmed.

Getting the site ready

  • Explain the parking and delivery arrangements
  • Send any specification or drawings in advance
  • Tell us what induction or permit system the site runs

Ask for a quote

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.

Get a quick quote

Related advice

Why deal with it now?

Looking at mastic during planned maintenance costs little. Waiting until leaks appear means working under pressure with less control over timing. Water getting in through a failed joint can damage finishes, stock and fittings. It pays to act early.

The product called for affects the cost, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site rules also count.

Why choose Mastic Doctor in Reading

  • Coloured sealants to suit the setting, where available
  • A fixed quote before work starts
  • RAL and finish matching where the product range allows
  • Colour options checked against the specified product

See how commercial sealant jobs are priced and our accreditations.

Commercial clients in Reading

Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, with each stage agreed with your site contact.

As a CHAS accredited contractor and Constructionline member, we’re straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.

How the job changes by surface

Tenement and older buildings

Traditional buildings have joints that need a careful approach. We look at the substrate before choosing a sealant.

Estate-wide resealing programmes

A programme can start with the worst buildings and work down. You get one fixed quote per building or for the whole estate.

Frames, entrances and external joints in Reading

Central London is about 38 miles from Reading. Around the capital’s commuter belt, managing agents look after many blocks close to stations and town centres. Reading is in the South East, one of the UK’s drier regions. Even so, frame mastic only goes on in dry, workable conditions, and the sunniest, most exposed sides of a building typically need attention first.

For a school such as Coley Primary School, perimeter mastic on windows and doors is a holiday job. For agents with blocks near Reading West station, which lies north-west of Reading, a block-wide mastic programme deals with frames, balconies and entrances in one go.

Reading is about 38 miles west of London, in Reading. If you’re looking for mastic sealing in Reading, we can help, as we do across Reading. We work across 17 places in Reading.

If you need mastic sealing in RG6, RG31, RG1 and RG30, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Streets here include Downshire Square, Market Way and Market Place, and sites on any of them can send details for a fixed quote. Being close to the A4 and A33, Reading is straightforward for us to reach. Just outside Reading, we also work in Coley Park (1 mile south-west), West Reading (1 mile north-west), Newtown (1 mile east), Lower Caversham (1 mile north-east) and Whitley (2 miles south-east).

Landmarks near Reading

Locally, jobs take us to sites close to Eurospeak Language School, University of Reading library and Former Kennet Arms and the streets around them. Nearby too are Kendrick School (0.6 miles north-east) and Eldon Square (0.9 miles east). Reading’s nearest station is Reading West station, about 0.7 miles north-west of the centre. Nearby you’ll also find Beaumys Castle (5 miles south) and The Oracle (less than half a mile north-east). For a walk, there’s Sonning Hill and Longwater.

Map of Reading © OpenStreetMap contributors

Reading: questions and answers

Does your area include sites such as Reading Link Retail Park, near Reading?

Yes, sites like Reading Link Retail Park are within our area, along with the rest of Reading. To start, just speak to us on 01277 525 020 or email us with the unit, the joints involved and your access times.

Will you price a mastic programme across our Reading portfolio?

Yes. Portfolio-wide programmes are a regular request. We can phase the programme to suit your budgets and notice periods.

Do you work with property factors and landlords?

Yes, block and estate work is a core part of what we do. We work through buildings in a planned order with dates agreed in advance.

Can weather delay the job?

For external joints, yes. Sealant needs a dry joint and a temperature within the product’s range, so frost, rain or cold mornings can delay outside work. Inside work is seldom held up.

When can the area be used after sealing?

That comes down to the sealant and the temperature. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.

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 check for asbestos in old sealant?

We don’t remove asbestos-containing materials. Anything suspect is tested before we carry on in line with the dutyholder’s asbestos management.

Do you need mastic sealing in Reading?

We often find joints filled solid with no backing rod so the mastic is bonded on three sides. That three-sided adhesion stops it stretching and it tears.

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

  • Estate-wide sealant that is simply worn out
  • Worn sealant at communal door frames
  • Water getting in round frames after rain
  • Draught complaints from residents or tenants

If you manage student housing near a university such as University of Reading, 0.7 miles east of Reading, the summer turnaround is the time for mastic.

Comparing quotes

  • Whether their applicators hold CSCS cards
  • The terms of the workmanship guarantee
  • Their plan for phasing and protecting the area
  • Which product they’ll use, and why it suits the joint

Choosing a commercial sealant contractor

Accreditations

Trusted. Accredited. Insured.