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

Sealant specialists in Northington

Looking for commercial sealant contractors in Northington? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.

  • Expansion joints with the sealant torn out
  • Water staining near frames, panels or ceilings
  • Untidy joints in a reception, shop floor or lobby
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
CHAS & Constructionline
£5m PL insurance

Commercial sealant contractors in Northington

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

Keeping the joints sound

Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. We suggest:

  • Report cracked or peeling sealant early
  • Check sealant as part of routine building inspections
  • Log reseals in the O&M or maintenance records
  • On pre-2000 buildings, share the asbestos information before work starts

Give fresh sealant time to cure before it’s cleaned, wetted or walked past. Cure time varies with the product, conditions and depth of the joint. Leaving the area closed until then keeps the bead neat.

In kitchens and washrooms, a failed joint is a cleaning problem as well as a leak risk. Cleanability is something environmental health officers pay attention to.

Sealant applicators in Northington

Having a single contact for all your sites makes sealant far simpler to manage. Single jobs, multi-site packages and planned programmes all come to us, handled with the same process each time: send details, get a fixed quote, we seal, and a 12-month guarantee once it’s signed off. To get a programme moving in Northington, call the office on 01277 525 020 or use the quote form with the site addresses. Site teams most often ask us about earlier reseals applied straight onto the failed bead and messy, uneven beads from earlier work that let the building down, across movement joints in walls and floors, window and door perimeters and external facade joints. Looking for mastic applicators who cover Northington? We’ve been sealing commercial buildings since 2005.

In Northington, as anywhere, the first joints to go are typically the ones that work hardest: frame perimeters in the sun, floor joints at doorways and anything that gets wet every day.

A job in a smaller place like Northington is usually 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.

A 12-month guarantee applies to all our work. Should something we installed fail, phone 01277 525 020 or send photos by email and we will come back to it.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Northington (SO24)
Region
Hampshire
Cover
12 months on our workmanship
Quotes
Fixed quote, scope in writing
Telephone
01277 525 020
Last updated
3 November 2026

Our process

On arrival, we report to your site contact and complete whatever induction the building runs. Floors, finishes and fittings next to the joints are covered before any cutting starts, and the work normally takes a few hours for one area, or a planned series of visits across a bigger building. Rural sites near Northington may need directions, gate codes or a contact on site. Add it to your enquiry and we will build it into the plan.

  1. First, details come to us: photographs, drawings or a schedule of the areas, and a site visit is booked where it helps.
  2. Next comes a diagnosis and a fixed quote.
  3. Site hours, access windows and the order of areas are agreed before we start.
  4. We strip the failed bead and prepare both faces of the joint.
  5. Backing and primer go in where needed, then the chosen sealant is applied and tooled.
  6. Finished joints are checked with you and handed over with our 12-month guarantee.

Preparing the site

  • Send your site hours and access windows
  • For older buildings, check the asbestos register before work
  • Move anything stored against the joints

Quotes

Send us photos, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.

Ask for a quote

Advice

Common questions from Northington clients

Can the sealant on our Northington premises match the finishes?

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

Is Northington too small for you to travel to?

No. Places such as Northington are covered as much as the big towns. Our area covers London and the South East counties. We plan jobs in smaller places so return trips are kept to a minimum.

Can you follow the specification on our project?

Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it.

What do you need from us to quote?

Send what you have, even a few photos and rough lengths. Questions or a site visit follow where needed, then a fixed quote.

Will your applicators have CSCS cards?

Yes. We use CSCS-carded applicators, as many construction sites ask for.

Who decides which product is used?

A specification, where there is one, decides it. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.

What about asbestos in old mastic?

It can, on some older buildings. That’s why we ask for the asbestos information first, and stop if a material is suspect until it’s tested.

Sealant on show in Northington’s commercial buildings

Rainfall across the South East, Northington included, is lower than in many parts of the UK. That helps, but frost and condensation on glass and coated frames still stop outside sealing on some winter mornings. Central London is about 54 miles from Northington. The commuter belt holds a great many offices, retail parks and business parks. Multi-site occupiers here often want one sealant contractor across all their buildings.

A lasting commercial joint around Northington begins with the old bead fully out and the faces clean and dry.

Northington is about 7 miles north-east of Hyde, in Hampshire. We send applicators to Northington for sealant joints. Northington is one of 723 places we cover in Hampshire. Southampton is covered too, around 17 miles from Northington.

Anyone looking for commercial sealant contractors in SO24 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Nearby places we also cover include Totford (1 mile north-east), Brown Candover (1 mile north-east), Old Alresford (2 miles south-east), Bighton (3 miles south-east) and Preston Candover (4 miles north-east). Further afield, our area takes in Basingstoke (10 miles north), Winchester (8 miles south-west), Eastleigh (13 miles south-west), Andover (14 miles north-west), Chandler's Ford (13 miles south-west) and Alton (9 miles east).

Around Northington

We work on buildings around The Woolpack Inn and the streets around them. Northington’s nearest station is Micheldever station, about 4.6 miles north-west of the centre. A little further out are Barton Castle (3.2 miles east).

Map of Northington © OpenStreetMap contributors

Work for main contractors and building owners

Agents, factors and owners’ representatives all follow the same route: send the details, accept a fixed quote, and we carry out and guarantee the work. Keys, access and contacts can be agreed in advance.

When you manage a building on behalf of an owner, you need clear quotes and clear reporting. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative, plus a 12-month guarantee.

Surface by surface

Window and door perimeters

The perimeter joint between a frame and the structure keeps rain out of the reveal. Failed perimeters are cut out and cleaned, backing goes into deeper gaps, and the joint is resealed with a low-modulus neutral-cure silicone or another suitable product.

Washrooms and toilets

Black sealant in a toilet block is normally beyond cleaning. Replacement is the fix: strip, clean, dry and reseal, room by room if that suits the building.

What we can’t put right

Some faults sit outside our scope, and we say so rather than covering them up:

  • Old mastic that tests positive for asbestos
  • Leaking roofs, gutters or flat-roof membranes (those need a roofer)
  • Walls or slabs moving more than any sealant can take

Not sure which it is? You can ring 01277 525 020 or email drawings and photos and we will tell you honestly before you book.

What we seal

  • External facade joints
  • Floor and threshold joints
  • Washrooms and tea points
  • Kitchen worktops and splashbacks
  • Movement joints in walls and floors
  • Window and door perimeters

Do you need commercial sealant contractors in Northington?

Washrooms and kitchens wear sealant out in their own way. Constant moisture, cleaning chemicals and weak extraction let mould grow into the sealant; when mould is in the body of the sealant, no cleaner will shift it. Replacement with a sanitary anti-mould silicone is the lasting answer.

Clients typically get in touch after noticing something like this:

  • External beads that have gone brittle and cracked
  • Gaps behind commercial kitchen worktops and sinks
  • Messy, uneven beads from earlier work that let the building down
  • Damp patches where an external joint has failed

Premises within reach of Micheldever station (4.6 miles north-west of Northington) often have busy frontages where joints are seen by everyone passing.

Comparing quotes

  • Will CSCS-carded applicators be on site?
  • Whether primer will be used where the manufacturer specifies it
  • Health and safety accreditation such as CHAS
  • How the existing material will be dealt with

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Accreditations

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