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

Commercial Sealant Contractors in Up Somborne

Sealant work for offices, shops, hotels and other commercial buildings throughout Up Somborne and nearby, carried out by CSCS-carded applicators. CHAS accredited and fully insured.

  • Smeared sealant across finishes from a rushed job
  • Expansion joints with the sealant torn out
  • External beads that have gone brittle and cracked
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS & Constructionline
£5m public liability

Commercial sealant contractors across Up Somborne

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Our process

We follow your site rules from the start: signing in, inductions and any permit to work. Once we’re cleared to begin, we take the joints in the sequence agreed with you. Jobs in and around smaller places like Up Somborne are usually planned as a single visit, so we ask for photographs and rough sizes first. That way the right products come on the day.

  1. First, details come to us: photographs, drawings or a schedule of the areas, and a site visit is booked where it helps.
  2. The failure is diagnosed and a fixed quote issued for the work agreed.
  3. We plan around your site hours and access windows, phasing the work where areas have to stay in use.
  4. The failed bead is removed and the joint faces cleaned until they’re sound and dry.
  5. The depth is set, primer is used where the maker calls for it, and the fresh bead is applied and tooled.
  6. Finished joints are checked with you and handed over with our 12-month guarantee.

Preparing the site

  • Point out parking and an unloading spot
  • Let us know about inductions and permits
  • Share your working hours and any access restrictions

Get a fixed quote

Every quote starts with the facts: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we will fill any gaps with a visit.

Get a price

Related advice

About our commercial sealant contractors in Up Somborne

Pricing a commercial reseal is a short process. Send photos, drawings or a schedule of the joints through our quote form; you can also call the office on 01277 525 020 or email a schedule or drawings with the details. Where the photographs don’t tell the full story, we arrange a site visit. We work on washrooms and tea points, window and door perimeters and external facade joints, and the usual reasons a site gets in touch are weathered facade sealant that no longer flexes and smeared sealant across finishes from a rushed job. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Up Somborne is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.

On a typical commercial building in Up Somborne, the joints that fail first are the hardest-worked ones: south-facing perimeters, entrance thresholds and busy washrooms.

A job in a smaller place like Up Somborne is typically a single building. We plan the visit so everything on the list is done in one go, with the right products and colours on hand.

Whoever the client is, the cover is the same: twelve months on the work we carried out. It doesn’t extend to damage, faults in the building or work by others, and we are upfront about that.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Up Somborne (SO20)
Region
Hampshire
Guarantee
12 months on every job
Quote
A fixed quote before we start
Telephone
01277 525 020
Page updated
3 November 2026

When to call us in Up Somborne

In wet areas the enemy is normally mould rather than movement. Constant moisture, cleaning chemicals and weak extraction let mould grow into the sealant, and once established it rarely cleans out. The fix is a new bead of anti-mould sanitary silicone.

What tends to prompt an enquiry:

  • Hardened, chalky sealant on south-facing or exposed elevations
  • Messy, uneven beads from earlier work that let the building down
  • Gaps behind commercial kitchen worktops and sinks
  • Expansion joints with the sealant torn out

Offices at parks like Balldown Business Centre, 2.2 miles to the east of Up Somborne, have receptions, kitchens and glazed partitions where a tidy joint matters.

What your quote should include

  • How joint depth will be controlled
  • Will failed sealant be removed rather than covered?
  • Is the sealant right for the movement and the substrate?
  • Whether their applicators hold CSCS cards

Choosing a commercial sealant contractor

Your questions answered

Is Up Somborne too far out for you?

Not at all: smaller places are covered as well as towns. London and every South East county are within our area. Where we can, we group nearby jobs to make the most of each trip.

Can you match sealant colours for premises in Up Somborne?

Yes, we can typically get close to most finishes from the product’s colour range. The quote lists the colours the product is made in.

Can you follow the specification on our project?

Yes. Send it with your enquiry, and the quote will be based on it.

When is resealing likely to be due?

It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.

Is your work guaranteed?

Each job sits under our 12-month guarantee, starting at sign-off. Keeping joints clean and inspected helps them last well beyond that.

How do you keep disruption to occupiers down?

It’s normal for us to work in occupied buildings. Only the area being sealed is closed, and the sequence is agreed in advance.

How long does a job like this take?

It depends on the scope, though a typical visit typically takes part of a day on a small job and longer where several buildings or phases are involved. Larger or phased jobs take longer, and we will give you a timescale with the quote.

Leave it or put it right?

Fixing joints complaint by complaint is a costly way to manage sealant. Planning the work across a year or a portfolio means fewer separate visits and a predictable spend. We will suggest an order, worst sealant joints first. For buildings around smaller places like Up Somborne, water damage can go unnoticed for longer, especially where a building isn’t used daily, so a failed joint can leak for a while before anyone sees it. Renewing joints in good time avoids the problem.

Whether it’s a single area or a whole estate, the same things set the price: 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 appoint us

  • 12 months’ guarantee on every job
  • Coloured sealants to suit the setting, where available
  • Work carried out by CSCS-carded applicators
  • Sealing commercial buildings since 2005

Read how commercial sealant jobs are priced or how we’re accredited.

Looking after the joints

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

  • Keep abrasive pads and scrapers off resealed joints
  • Keep a record of which joints were resealed and when
  • Keep washroom and kitchen extraction working
  • Make sure contractors see the asbestos survey before cutting out old mastic

Our workmanship on each job is backed by a 12-month guarantee. File the handover note with the building records, and tell us if a joint we sealed gives trouble within that time.

A failed external joint lets water in every time it rains. It can run into cavities, insulation and internal finishes long before anyone sees a stain. Catching it at the sealant stage avoids the bigger repair.

Working on commercial sites near Up Somborne

The South East is one of the drier parts of the UK. External joints still need dry faces and the right temperature, and damp or frosty mornings can hold work up. At about 64 miles from central London, Up Somborne is within reach of the capital. The South East around the capital has large numbers of business parks, offices and retail centres, especially around the motorway corridors. Occupiers with several premises in the region tend to prefer one contractor and one point of contact.

Sites a few miles apart, such as Balldown Business Centre and Beeches Industrial Park, can share one programme and one point of contact.

Up Somborne is about 5 miles north-west of Winchester, in Hampshire. Looking for commercial sealant contractors in Up Somborne? We can help, as we do across Hampshire. 723 places across Hampshire fall within our area, Up Somborne among them. Southampton is covered too, some 12 miles away.

We cover the SO20 postcode districts for sealant joints. Among the streets we cover are Court Lane and Up Somborne Lane, and sites on any of them can send details for a fixed quote. If your building is just outside Up Somborne, we cover Little Somborne (1 mile west), Ashley (1 mile south-west), King's Somborne (2 miles south-west), Lower Slackstead (4 miles south) and Braishfield (5 miles south). A short drive away, we cover Winchester (5 miles south-east), Eastleigh (9 miles south-east), Andover (9 miles north), Totton (12 miles south), Chandler's Ford (8 miles south) and Hedge End (13 miles south-east).

Landmarks near Up Somborne

Nearby you will also find Royal Hampshire County Hospital (4.9 miles south-east).

Map of Up Somborne © OpenStreetMap contributors

What sets the cost

These are the things that shape the price:

  • The total length or number of joints
  • Working within restricted access windows
  • How accessible the joints are
  • Location, for remote and island sites

The product called for affects the cost, as does the preparation each joint needs. Access, phasing and site requirements come into it too.

What to include in your enquiry

Diagnosis starts before we arrive. Let us know:

  • Access details, including height
  • Where the site is, with the postcode
  • When you need the work done
  • The asbestos register, for older buildings

We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To ask for one, call 01277 525 020 or email drawings and photos.

Different surfaces, different methods

Shop fronts and retail fit-outs

Retail work usually has to fit around trading. Tell us your trading hours and access windows and we’ll plan around them, working in sections where that helps.

Washrooms and toilets

Around WCs, urinals, vanity tops, IPS panels and cubicles, sealant is wet most of the day. Old sealant comes out and a sanitary silicone with anti-mould additives goes in, with phased work so some facilities stay open.

Accreditations

Trusted. Accredited. Insured.