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

Facade and window perimeter sealing in Northington, Hampshire

Our CSCS-carded applicators take on facade joint and window perimeter sealing on commercial buildings in Northington. Send photographs or drawings for a fixed quote.

  • Staining on stone next to old sealant
  • Failed sealant on precast panel joints
  • Old perimeter mastic that has dried out
1
Send details
Photos, drawings or a schedule, or we 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
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
Constructionline member
£5m public liability

Facade sealing for businesses in Northington

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

How we handle facade sealing in Northington

We are often asked to look at water coming in around frames. Failed perimeter sealant is a frequent cause, though that isn’t the only cause. If the evidence points away from the sealant, we say so before quoting. The enquiries we see most involve weathered facade joints that have lost their grip and weathered joints at frame-to-structure perimeters, across window and door perimeters, shopfront frames and cladding panel joints. Searching for sealant specialists in Northington? Mastic Doctor has worked for contractors, FMs and building owners since 2005.

Around smaller places like Northington, building work normally means conversions of farm buildings, a few new houses or an extension to a hall or school. Perimeters, facade joints and internal sealant all need doing properly, however small the scheme.

Every job is signed off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.

Place
Northington (SO24)
Wider area
Hampshire
Guarantee
A 12-month guarantee
Quotes
Fixed quote, scope in writing
Call
01277 525 020
Updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Contractors’ notes for Northington

Northington lies roughly 54 miles out from central London. Towns within reach of London tend to keep building, from flats to offices and schools, and main contractors there need mastic that keeps to the programme. Northington is in the South East, one of the UK’s drier regions. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, so the external programme keeps a little slack.

Around Northington, as anywhere, a facade joint depends on its sizing, backing rod and preparation. For contractors building in or near Northington, we seal to the drawings, the specification and the programme.

Northington is about 7 miles north-east of Hyde, in Hampshire. Looking for facade sealing in Northington? We can help. 723 places across Hampshire fall within our area, Northington among them. Our Southampton page has more on work in that area, about 17 miles away.

If you need facade sealing in SO24, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. If your building is just outside Northington, we cover 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). Bigger towns within reach include 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).

Landmarks near Northington

Locally, jobs take us to sites close to The Woolpack Inn and the streets around them. The closest station to Northington is Micheldever station, about 4.6 miles north-west. A little further out are Barton Castle (3.2 miles east).

Map of Northington © OpenStreetMap contributors

Should maintenance staff do it?

Certain joints really need a specialist: for example fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. A poor seal in places like these tends to cost more to put right later.

Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

From enquiry to sign-off

Diagnose, treat, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then the work is carried out to the specified product and detail, and we finish with a walk round so the work can be signed off. Rural sites near Northington may need directions, gate codes or a contact on site. Add it to your enquiry and we’ll build it into the plan.

  1. First we review photographs, drawings or what we saw on a visit, and agree how each joint will be reached.
  2. The old bead is cut away completely, not overlaid.
  3. Both faces are cleaned and, where the product needs it, primed.
  4. Backing rod, or bond-breaker tape in shallow joints, limits the depth.
  5. The new sealant goes in and is tooled firmly onto both faces.
  6. The completed runs are checked with you, then the 12-month guarantee applies.

What we need from you

  • Share the asbestos register for older buildings
  • Have the specification and drawings to hand
  • Tell staff and tenants when we’ll be in

Quotes

Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To ask for one, phone 01277 525 020 or send details through our quote form.

Get a quick quote

Read more

What happens if it’s left?

The longer a failed joint is left, the more the substrate suffers: edges get wet, render and timber deteriorate and frames can move. Early action keeps it simple. For buildings around smaller places like Northington, 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.

What you get with us

  • 12-month guarantee on workmanship
  • Colour agreed before work starts
  • Fully insured, including public liability cover
  • Standard and matched colours in many product ranges

See what affects the cost and our accreditations.

What we can’t put right

A few problems need another trade or a different fix, and we say so rather than covering them up:

  • Replacing glass or failed glazing units
  • Damp caused by condensation inside the building
  • Specialist high-level access methods

Not sure which it is? You can phone 01277 525 020 or send details through our quote form and we’ll tell you honestly.

Surfaces we seal

  • Window and door perimeters
  • Stone and brick facade joints
  • Cladding panel joints
  • Perimeter joints where frames meet the structure
  • Shopfront frames
  • Coping and flashing joints

Different surfaces, different methods

Precast concrete panels

Joints between precast panels carry real movement. A sealant of the right movement class goes in over backing rod, primed where the maker specifies.

Window and door perimeters

Frames grow and shrink with temperature, and the perimeter joint has to follow. Rod placed at the right depth lets the bead stretch without tearing.

Maintenance after handover

Sealant joints are maintenance items, and their life depends on movement, exposure, cleaning and use. We suggest:

  • Note when each elevation was last resealed
  • Share access with other external trades
  • Don’t wait for a second leak before calling
  • Avoid patch repairs on failed facade joints

After heavy weather, check vulnerable elevations for signs of water inside. An early report usually means a small reseal rather than a bigger repair.

In pre-2000 buildings, check the asbestos register before old sealant is cut out. Older sealants can contain asbestos.

Your questions answered

Is Northington too small for you to travel to?

Not at all: smaller places are covered as well as towns. We cover Greater London and the counties of the South East. We plan jobs in smaller places so return trips are kept to a minimum.

Will you fit the mastic around our build programme in Northington?

Yes, we work to the programme and the sequence the site sets. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

Are you CHAS accredited and on Constructionline?

Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.

How do you choose the sealant?

The specification comes first, if there is one. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.

What’s the quickest route to a quote?

There are four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photos and a postcode.

Do you work to architects’ specifications?

Yes. Send it with your enquiry, and we will price the work to it, flagging anything that needs clarifying.

Can you work on upper floors?

We agree access with the client at the start. Tell us about access: existing scaffold, what you’re arranging and any site restrictions, and we’ll price the work around it.

Accreditations

Trusted. Accredited. Insured.