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

Expansion joint sealing in New Marston

Expansion and movement joint sealing in walls, decks and floors in New Marston. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • Sealant peeling off one face of the joint
  • Rain penetration at brick or block movement joints
  • Car park joints leaking onto vehicles below
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
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
12-month guarantee on our workmanship.
London, the South East & Scotland
CHAS accredited
£5m PL insurance

Expansion joint sealing across New Marston

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

What sealant work can’t fix

Being straight saves everyone time. New sealant won’t cure:

  • Waterproofing layers buried beneath the sealant
  • Proprietary pre-formed expansion joint systems
  • Structural movement beyond what the joints were designed for (that needs a structural engineer)

Not sure which it is? You can give us a call on 01277 525 020 or send photos by email and we’ll tell you honestly before you book.

Surfaces we seal

  • Podiums and floor movement joints
  • Blockwork control joints
  • Car park decks and ramps
  • Precast concrete panel joints
  • Brickwork movement joints
  • Cladding panel joints

About our expansion joint sealing in New Marston

If you need expansion joint sealing in New Marston, start with photos and joint lengths. Send them through our quote form, and we’ll arrange a site visit if needed before issuing a fixed quote. You can also speak to us on 01277 525 020 or send photos by email to talk the joints through. Most enquiries involve car park joints leaking onto vehicles below and hardened, cracked sealant on exposed facades, on podiums and floor movement joints, cladding panel joints and blockwork control joints. Looking for mastic applicators who cover New Marston? We have been sealing commercial buildings since 2005.

Around New Marston, most floor and movement joint jobs are single buildings or yards. Getting widths, depths and traffic details up front means one visit, not two.

Work we carry out comes with a 12-month guarantee. Should something we installed fail, call 01277 525 020 or email a schedule or drawings and we’ll come back to it.

The Mastic Doctor team beside their liveried vans in front of an office building
Where
New Marston (OX3, OX1, OX4)
Region
Oxfordshire
Guarantee
A 12-month guarantee
Quotes
Fixed quote, scope in writing
Call
01277 525 020
Updated
3 November 2026

Floors, slabs and movement joints in New Marston

Rainfall across the South East, New Marston included, is lower than in many parts of the UK. Outside joints in yards and car parks still have to be dry before sealing, and where de-icing salt is spread in winter, open joints let it in. New Marston has at least three named business or industrial parks inside a 3-mile radius. Their warehouses, yards and car parks are exactly where joints take the most punishment.

Hospitals like John Radcliffe Hospital, 0.7 miles east of New Marston, have multi-storey or surface car parks whose joints carry vehicles round the clock. Centres like Clarendon Shopping Centre (1.2 miles south-west of New Marston) have mall floors and service decks whose joints carry steady traffic. University campuses such as Oxford Brookes University Marston Road Site (under half a mile south-east of New Marston) have car parks, paved walkways and building elevations with movement joints.

New Marston is about 1 mile north of Oxford, in Oxfordshire. Businesses, contractors and managing agents in New Marston use us for work on movement joints, as part of our coverage of Oxfordshire. We work across 423 places in Oxfordshire, from busy centres to rural villages.

We cover the OX3, OX1 and OX4 postcode districts. Buildings on Ferry Road, Croft Road and Copse Lane are within our area. Nearby places we also cover include Headington Hill (1 mile south-east), Northway (1 mile north-east), Oxford (1 mile south), St Clement's (1 mile south) and Norham Manor (1 mile west) for movement joints. Bigger towns within reach include Didcot (11 miles south), Bicester (10 miles north), Abingdon-on-Thames (6 miles south), Witney (11 miles west), Carterton (15 miles west) and Thame (11 miles east).

Landmarks near New Marston

Locally, jobs take us to sites close to English Faculty Library, Cheney School and Headington Hill Park. You’ll also find Rye St Antony School (0.5 miles south-east) and White Horse pub (0.8 miles south-east). For rail, the closest station is Oxford station, about 1.6 miles south-west of the centre. Nearby you’ll also find Clarendon Shopping Centre (1.2 miles south-west) and Churchill Hospital (0.7 miles east). Green spaces nearby include Headington Hill and CS Lewis Nature Reserve.

Map of New Marston © OpenStreetMap contributors

Aftercare for building managers

After handover, these steps help:

  • Keep traffic off new joints until the cure time is up
  • Sweep decks, ramps and floors so grit doesn’t collect in the joints
  • Brief car park operatives to protect joint lines during winter clearance
  • Avoid parking heavy plant or pallets on joint lines

Debris does more harm to joint sealant than most people realise. Grit trodden or driven into the joint works at the surface until it tears, especially on car park decks and warehouse floors. Regular sweeping keeps joint lines clear.

External wall joints that fail let rain into the masonry and cavity. The first sign is often a damp patch indoors, well after the seal first opened. Catching it early keeps the water outside.

From enquiry to sign-off

Diagnose, treat, sign off: that’s the shape of every visit. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and we finish with a walk round so the work can be signed off. Several jobs near New Marston can be grouped on one trip. Tell us your site hours and we’ll plan around them.

  1. First the joints are inspected, widths measured and the type of failure noted.
  2. A fixed quote names the sealant we propose and its movement class.
  3. Where areas have to stay open, we agree a phased sequence before starting.
  4. The failed seal is cut out and both joint faces cleaned back to sound material.
  5. Backing rod or bond-breaker sets the depth, primer goes on where specified, and the sealant is applied and tooled.
  6. We check each joint with you, confirm the cure time and sign off under our 12-month guarantee.

What we need from you

  • Tell staff and tenants when we will be in
  • Move anything stored against the joints
  • Arrange parking or a loading space

Request a quote

Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photos and a few notes.

Get a price

Advice

How the quote is worked out

To price the job, we consider:

  • The total length or number of joints
  • Specialist products, such as fire-rated or hygienic sealants
  • Induction, permit and paperwork requirements
  • Distance, for remote addresses

No two sites price the same: joint size, product, access and site hours all play a part. Send the details and a fixed figure follows.

What we need to price the job

A few photographs plus some basic facts will normally do. It helps to include:

  • Whether the building will be occupied during the work
  • Clear photos of the problem areas
  • The product your specification calls for
  • Anything awkward about access or site hours

To get a fixed quote, call the office on 01277 525 020 or send details through our quote form. Our quote form is another easy route.

Questions about New Marston

Can you take on a job at a hospital such as John Radcliffe Hospital?

Yes, healthcare and care buildings are part of our work. Work is phased so departments keep running, under the site’s own rules.

Is a smaller place like New Marston outside your area?

Not at all. New Marston is within our area. Our area covers London and the South East counties. We plan jobs in smaller places so return trips are kept to a minimum.

How long does movement joint sealing take?

That depends on joint lengths, widths, access and how much old sealant or filler needs removing. Typically it takes a few hours to several weeks, depending on how many metres of joint there are and how much old sealant or filler needs removing.

Can you work to our specification?

Yes. Send it with your enquiry, and we will price the work to it.

Can one quote cover more than one building?

Yes. A group of buildings can go on one quote, with one point of contact across South East England, Greater London and Scotland.

What about RAMS and site documents?

Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote.

What happens if it rains on the day?

Sealing onto a damp surface leads to adhesion failure, so external work waits for suitable conditions. The work is simply moved to the next suitable day.

When to bring in a specialist

General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.

For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

Why act early in New Marston

Re-sealing with the same product that failed is often a false economy. If the joint is too narrow or the product wrong for the movement, it needs a different approach, and we will say so before quoting. In a smaller place such as New Marston, getting a contractor back for a second visit takes time, so we’d suggest renewing all the joints that are going, not just the worst.

Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote.

Why us?

  • Old sealant cut out, never sealed over
  • Our applicators hold CSCS cards
  • Coloured sealants to suit the setting, where available
  • One contact handling all your sites

Take a look at what affects the cost or our accreditations.

Accreditations

Trusted. Accredited. Insured.