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

Construction and new-build mastic in Newtown, Reading

Work needed on a mastic package in Newtown? We assess it, carry out the work and guarantee our workmanship for 12 months.

  • External joints sealed in damp or cold conditions that are now failing
  • A mastic package split between trades with no clear owner
  • Frame gaps too wide for sealant alone
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
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Construction mastic for businesses in Newtown

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

Construction mastic in Newtown, done properly

Mastic follows everyone else, which means it absorbs every delay upstream. The sequence is set with the site team and updated as plots or floors are handed over, so applicators arrive when areas are genuinely ready. Sealing too early only means coming back once others have damaged it. The enquiries we see most involve missed perimeter joints on a new elevation and old sealant on a refurbishment that needs stripping before new work, across brick and block movement joints, sanitary and kitchen joints and internal decorators’ caulk. A single leaking joint is often how a building in Newtown first comes to us: we look at the rest while we’re there and tell you what we find.

On a small site around Newtown, the mastic is best done in the fewest visits we can manage. Tell us when scaffold comes down and when decoration finishes, and we’ll plan around those stages.

Every job we finish is backed by a 12-month workmanship guarantee, in Newtown as everywhere else we work. If a joint we sealed fails because of how it was installed, we come back and put it right.

Mastic Doctor team members lined up next to their branded vans outside an office building
Place
Newtown (RG1, RG6, RG4)
Wider area
Reading
Guarantee
12 months on our workmanship
Price
Fixed quote, scope in writing
Telephone
01277 525 020
Last updated
3 November 2026

Facades, frames and programmes in Newtown

A 2-mile radius around Newtown takes in a good number of hotels. Hotel extensions and refits normally have to fit around bookings, so mastic dates are tight. Rainfall across the South East, Newtown included, is lower than in many parts of the UK. That doesn’t stop wet spells, or frosty starts that leave panels too damp to seal, so external mastic is timed for workable conditions and agreed with the site manager.

University estates such as University of Reading (to the south-west of Newtown) tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal. Further education sites such as Reading College, under half a mile west of Newtown, are extended and refurbished from time to time, with mastic often programmed into the summer break.

Newtown is about 1 mile east of Reading, in Reading. Commercial clients in Newtown use us for work on mastic packages, as part of our coverage of Reading. We work across 17 places in Reading, large and small.

We cover the RG1, RG6 and RG4 postcode districts for mastic packages. Buildings on Orts Road, Eldon Road and Amity Road are within our area for mastic packages. Close to Newtown, our area also takes in Lower Caversham (1 mile north-west), Reading (1 mile west), Earley (2 miles south-east), Caversham (2 miles north-west) and Play Hatch (2 miles north). Bigger towns within reach include Norcot (3 miles west), Tilehurst (4 miles west), Tilehurst Within (4 miles west), Horncastle (3 miles west), Whitley Wood (3 miles south) and Southcote (3 miles west).

What’s near Newtown

Recent enquiries here include premises near University of Reading library, Maiden Erlegh School and Eldon Square. You will also find The Fisherman's Cottage pub (under half a mile west) and Bulmershe College (less than half a mile west). For rail, the closest station is Reading station, about 1.1 miles west of the centre. Well-known places in the area include The Oracle (1.1 miles west) and Royal Berkshire Hospital (0.6 miles south-west). Green spaces nearby include Fobney Island Wetland Reserve and Sonning Hill.

Map of Newtown © OpenStreetMap contributors

What sealant work can’t fix

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

  • Joints damaged after sign-off by following trades
  • Approving fire stopping as compliant
  • Faulty frames rather than failed sealant

Not sure which it is? You can ring 01277 525 020 or send details through our quote form and we will tell you honestly before you book.

What we seal

  • Sanitary and kitchen joints
  • Internal decorators’ caulk
  • Floor and skirting junctions
  • Window and door perimeters
  • Brick and block movement joints
  • Cladding and panel joints

Our process

We follow your site rules from the start: signing in, inductions and any permit to work. With the paperwork done, we take the joints in the sequence agreed with you. For a job in Newtown, the main thing is a clear picture of the work, so send photographs of each area. You will then get a fixed price for the work.

  1. We start with the drawings, specification and programme.
  2. Quantities are measured and a fixed price returned.
  3. We agree with the site team which areas come first.
  4. Plots or floors are sealed as they’re handed over.
  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.

What we need from you

  • Let building users know which areas are affected
  • Share your working hours and any access restrictions
  • Explain the parking and delivery arrangements

Quotes

Need a figure for a tender or a budget? We will quote against your scope and drawings that you can work with. If you have questions first, ring 01277 525 020 or email drawings and photos.

Get a price

Advice

FAQs: Newtown

Can you take on a job at a hospital such as Royal Berkshire Hospital?

Yes, hospitals are one of the sectors we cover. Each area is agreed with the ward or department and the estates team in advance.

Is Newtown too small for you to travel to?

No. Places such as Newtown are covered as much as the big towns. London and every South East county are within our area. Send photographs and a list of what needs doing, and we will plan the job to need as few trips as possible.

Does the weather affect the work?

Outside, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Internal work is rarely affected.

When is resealing likely to be due?

There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Treat them as maintenance items and inspect them regularly.

Do you guarantee new-build sealant work?

Our workmanship carries a 12-month guarantee from sign-off. The guarantee covers our work, not later damage by other trades.

What do you charge?

There isn’t a price list, because every site is different. With photos or drawings, we can give you a fixed quote.

Will you just go over the old sealant?

No. Failed sealant is removed and the faces cleaned back to sound, dry material first, since fresh sealant will not bond reliably to aged material.

What affects the price in Newtown

To price the job, we consider:

  • Distance, for remote addresses
  • Specialist products, such as fire-rated or hygienic sealants
  • Phasing around occupants
  • Whether old sealant has to be cut out first

Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.

What we need to price the job

Diagnosis starts before we arrive. Tell us:

  • Photos of the joints, close up and from further back
  • The product your specification calls for
  • Access details, including height
  • Drawings or a marked-up plan, if available

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.

Do you need construction mastic in Newtown?

Frames installed with uneven gaps make perimeter sealing harder. Every product has limits on how wide a joint it can bridge. Better to raise it at the start than seal a joint that’s bound to fail.

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

  • Sealant knocked or painted over by other trades
  • Mastic snags holding up handover
  • Perimeter gaps outside the sealant’s range
  • A mastic package split between trades with no clear owner

New units and refits on sites such as Suttons Business Park (under half a mile north-east of Newtown) need their panel and perimeter joints sealed to the specification.

What your quote should include

  • Will CSCS-carded applicators be on site?
  • How the joint faces will be prepared and primed
  • Which product they’ll use, and why it suits the joint
  • The terms of the workmanship guarantee

Questions to ask before you appoint anyone

Building owners, agents and FMs in Newtown

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

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

Why it’s worth doing now in Newtown

When a package runs over budget, downgrading the product is a common first thought. The saving is small next to the cost of callbacks and defects, especially externally. We price the specified product and will tell you plainly where an alternative would or wouldn’t work. Sealant hardens, cracks and loses grip with age, UV and movement. Replacing it before it fails keeps water out.

Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote and we will put a fixed figure on it.

Why us?

  • CHAS accredited
  • A Constructionline member, so easy to vet
  • One number for every site we cover
  • A range of standard colours, depending on the product

See our cost guide and our accreditations and insurance.

Accreditations

Trusted. Accredited. Insured.