Commercial Sealant Contractors in New Marston
We carry out sealant work for offices, shops, hotels and other commercial buildings in New Marston. Send photographs or drawings for a fixed quote.
- Frame mastic that has hardened and come away from the wall
- Layers of sealant, all of them failing
- Sanitary sealant that has gone black and patchy
Commercial sealant contractors in New Marston
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
When to call us in New Marston
Plenty of failed joints were never sealed with the right product. Painters’ acrylic in a moving joint, vinegar-smelling silicone on metal or natural stone, or a high-modulus product where a low-modulus one was needed all let go sooner than they should. BS 6213 gives guidance on choosing construction sealants, and many specifications refer to it.
Most enquiries start with something like this:
- Water staining near frames, panels or ceilings
- Earlier reseals applied straight onto the failed bead
- Black mould through washroom sealant that won’t clean off
- Window and door perimeter joints that have cracked open
If you run a unit on an estate such as Shotover Trading Estate, 1.9 miles east of New Marston, the trade counter, offices and staff facilities have joints to look after as well as the warehouse.
What your quote should include
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- Are they CHAS accredited or on Constructionline?
- Is the sealant right for the movement and the substrate?
- How the joint faces will be prepared and primed
Sealant applicators in New Marston
We have applied sealant on commercial sites for over 20 years, and the paperwork side is in order: CHAS accredited, Constructionline member, five million pounds of public liability insurance and CSCS-carded applicators. If your site needs RAMS, an insurance certificate or CSCS details, say so and we’ll confirm with the quote. Site teams most often ask us about wall and floor joints that have lost their seal and sanitary sealant that has gone black and patchy, on window and door perimeters, kitchen worktops and splashbacks and external facade joints. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in New Marston, preparation and product choice get the time they need.
The most common commercial job in New Marston is resealing joints that have simply reached the end of their life: hardened, cracked or shrunk away from the faces, and letting water or dirt in.
In a smaller place such as New Marston, commercial buildings are normally a mix of shops, a pub or café, a school, a surgery and perhaps a few business units. They’re not big jobs one by one, but their joints need the same preparation as anywhere.
Work we carry out in Oxfordshire comes with a 12-month guarantee. Should something we installed fail, give us a call on 01277 525 020 or email the details over and we’ll come back to it.
- Location
- New Marston (OX3, OX1, OX4)
- Region
- Oxfordshire
- Cover
- 12 months on our workmanship
- Quotes
- A fixed quote before we start
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Questions about New Marston
Is New Marston off your patch?
Not at all: smaller places are covered as well as towns. We cover Greater London and the counties of the South East. Send photos and a list of what needs doing, and we will plan the job to need as few trips as possible.
Will our hotel in New Marston need to close for the work?
In the majority of cases no closure is needed: we work room by room or floor by floor. Housekeeping and our team agree each day’s rooms.
Do you work directly for building managers?
Yes. FMs, managing agents and landlords are among our regular clients. We can work to your instruction process and site rules.
Can you work to our specification?
Yes. We follow the specification, along with the manufacturer’s installation guidance, and we raise anything unclear before work begins.
Can you handle sealant work across several sites?
Yes. Give us the sites and the scope at each, and we will put together a fixed quote and a sensible order of work.
Can weather delay the job?
It can, when the joints are outside. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so external work may be moved if conditions aren’t right. Indoors, the weather is rarely a problem.
Do you check for asbestos before removing sealant?
In buildings from before 2000 in particular, some old mastics and sealants may contain asbestos. We ask to see the asbestos register or survey before disturbing old sealant, and anything suspect is left until it has been tested.
Keeping the joints sound
Regular inspection catches problems early. In particular:
- Respect the cure time before reopening an area
- Keep washroom and kitchen extraction working
- Deal with small splits before they become leaks
- Put external and wet-area joints on a regular inspection round
Add the resealed joints to your planned maintenance inspections. Regular checks pick up small failures before they become leaks. If anything looks wrong, phone 01277 525 020 or email us with a photo.
An open joint in a food area or toilet collects dirt and moisture that cleaning can’t reach. Environmental health officers look at how cleanable surfaces are, so sound, smooth joints matter.
Why deal with it now?
On many buildings the mastic was done by whichever trade was on site. Choosing the product, setting the depth and preparing the faces are what a specialist brings, the three things that decide how long a joint lasts. It shows over the following seasons rather than at handover. Over time, UV, weather and movement wear any sealant out. Replacing it before it fails keeps water out.
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 requirements come into it too.
Why choose Mastic Doctor in New Marston
- Sealing commercial buildings since 2005
- CHAS accredited
- Colour options checked against the specified product
- Specification-led, product-correct work
Take a look at how commercial sealant jobs are priced and our accreditations.
Work for main contractors and building owners
FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we will confirm them with the quote.
When you manage a building on behalf of an owner, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.
Nearby places to New Marston
Other services in New Marston
On site: what to expect
Occupied buildings need a little choreography. We sign and contain the area we’re in, keep walkways clear and work section by section so the rest of the building stays in use. For a job in New Marston, the main thing is a clear picture of the work. You’ll then get a fixed price for the work.
- We start with the evidence: photos, drawings or a look on site.
- You get a fixed quote covering removal, preparation and the new sealant.
- We agree the order of work, access windows and site hours with you.
- Each joint is stripped, cleaned back to sound faces and primed where the maker specifies.
- Backing goes in, the new sealant is laid and tooled, and the area is left neat.
- We hand back each area with its cure time and our 12-month guarantee.
Getting the site ready
- Arrange parking or a loading space
- Tell us your opening times and when work is allowed
- Point out any areas we must not close
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. To get it moving, speak to us on 01277 525 020 or send details through our quote form.
Read more
Should maintenance staff do it?
For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.
What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.
Shops, offices and hotels in and around New Marston
New Marston sits in one of the drier corners of the country, the South East. External joints still need dry faces and the right temperature, and damp or frosty mornings can hold work up. At least three named trading, business or retail sites lie within about 3 miles of New Marston. Sites like these see regular refits, with shopfronts, offices and staff areas to seal.
In hotels such as Mount Pleasant Hotel, which lies east of New Marston, refurbishments typically mean bathroom, bar and reception joints where a matched sealant colour has to sit with the finishes. A business with units at Shotover Trading Estate and Osney Mead Industrial Estate needn’t use two contractors for its sealant.
New Marston is about 1 mile north of Oxford, in Oxfordshire. Looking for commercial sealant contractors in New Marston? We can help, as we do across Oxfordshire. We work across 423 places in Oxfordshire, large and small.
We cover the OX3, OX1 and OX4 postcode districts. Among the streets we cover are Ferry Road, Croft Road and Copse Lane, and sites on any of them can send details for a fixed quote. We also cover 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). A short drive away, we cover 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).
Near you in New Marston
Recent enquiries here include premises near English Faculty Library, Cheney School and Headington Hill Park, among other places. You will also find Rye St Antony School (0.5 miles south-east) and White Horse pub (0.8 miles south-east). New Marston’s nearest station is Oxford station, roughly 1.6 miles south-west. Other landmarks nearby include 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.