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

Mastic Sealing in Hensting

Need mastic sealing in Hensting? It’s simple: send details, get a quote, we seal, guaranteed.

  • Damp patches beside frames
  • Draughts at frames across a block
  • Complaints coming in block by block
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
CHAS & Constructionline
£5m public liability

Need mastic sealing in Hensting?

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

How we handle mastic sealing in Hensting

Different joints need different sealants. Low-modulus neutral-cure silicone suits many window perimeters and external movement joints, and MS polymer sealants stick well to many substrates and often take paint. We will confirm the colours available for the specified product. We work on shopfronts below residential blocks, communal kitchens and washrooms and communal entrances and stairwells, and the failures we are asked to look at most are draught complaints from residents or tenants and movement joints with sealant missing. Whoever orders the work in Hensting, the brief is usually the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

For buildings around smaller places like Hensting, we group work so one trip covers it. Send photographs of the frames and joints and we’ll give a fixed quote.

Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.

The Mastic Doctor team standing beside their branded vans outside an office building
Location
Hensting (SO50)
Region
Hampshire
Guarantee
A 12-month guarantee
Quotes
Quoted before any work starts
Phone
01277 525 020
Page updated
3 November 2026

After the work

Once the work is signed off, a little attention goes a long way:

  • Keep bins and bikes away from communal door frames
  • Plan resealing building by building rather than complaint by complaint
  • Track which buildings were done and when
  • Make mastic part of routine maintenance checks

Add mastic joints to your cyclical inspections. Watch for splits, open gaps, hard or chalky surfaces and mastic pulling away and record where they are.

Planned resealing is easier to budget than emergency repairs. A programme can start with the worst buildings so spending is spread.

What sealant work can’t fix

Honesty saves time and money. Fresh joints won’t solve:

  • Frames that are rotten, warped or broken
  • Glazing that needs replacing
  • Leaks from above rather than through a joint

If in doubt, ring 01277 525 020 or use the quote form and we’ll say what we think before you book.

Surfaces we seal

  • Communal kitchens and washrooms
  • Communal entrances and stairwells
  • Window and door perimeters on blocks
  • External wall and movement joints
  • Shopfronts below residential blocks
  • Balcony and threshold joints

Questions about Hensting

Is a smaller place like Hensting outside your area?

No. Small places get the same service as large ones. We cover Greater London and the counties of the South East. Send photos and a list of what needs doing, and we’ll plan the job to need as few trips as possible.

Is Wessex Business Park, near Hensting, within your area?

Yes. We cover Hensting and the area around it, including industrial estates, business parks and retail parks such as Wessex Business Park. Send details of the unit and the work through our quote form for a quick quote.

Who decides which product is used?

A specification, where there is one, decides it. Without one, the joint decides: its movement, its surfaces and what it has to cope with.

Will you come and look before quoting?

It depends on the job. Simple work can often be priced from photographs, while larger or less clear jobs get a site visit first.

How do you handle work on occupied blocks?

Occupiers stay in the building throughout. If any flats or units need access, we will tell you in advance so you can arrange it with occupiers.

Does the weather affect the work?

Outside, yes. The joint has to be dry and within the product’s temperature range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.

What guarantee do you give on resealing?

Our workmanship carries a 12-month guarantee and we hold public liability insurance.

For owners and agents in Hensting

Hensting lies roughly 62 miles out from central London. Within reach of London, blocks run by agents and associations are common around stations. The South East is one of the drier parts of the UK. External mastic still waits for dry faces and the right temperature, and elevations facing the sun and the prevailing weather are usually where frame mastic ages first.

If you own or manage units on a site such as Wessex Business Park, 1 mile to the south-west of Hensting, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit. Blocks of flats and mixed-use buildings often cluster around stations such as Shawford station, 2.2 miles north-west of Hensting, and their window and balcony mastic tends to age at the same rate across a building.

Hensting is about 3 miles north-east of Eastleigh, in Hampshire. Any commercial site in Hensting is covered, whether it’s a single job or part of a planned programme. Across Hampshire, 723 places are covered, Hensting among them. Our Southampton page has more on work in that area (7 miles or so).

We take on mastic joints across the SO50 postcode area, for business premises of every kind. If your building is just outside Hensting, we cover Owslebury (1 mile north-east), Owslebury Bottom (1 mile north-east), Baybridge (2 miles east), Morestead (2 miles north) and Lane End (4 miles north-east). A short drive away, we cover Winchester (4 miles north), Gosport (15 miles south-east), Eastleigh (3 miles south-west), Fareham (11 miles south), Horndean (14 miles south-east) and Totton (11 miles south-west).

What’s near Hensting

We work on buildings around Ship Inn. For rail, the closest station is Shawford station, about 2.2 miles north-west of the centre. Other landmarks nearby include St John's Rooms And Chapel (4.3 miles north) and Eastleigh Museum (3.5 miles south-west). Not far away are Shawford Down and Twyford Down.

Map of Hensting © OpenStreetMap contributors

From enquiry to sign-off

At the end of each section, we remove the tape, clean down and inspect every joint with your site contact. Where the sealant needs time to cure before use, we tell you and sign the area. If others near Hensting need work, visits can be combined. A fixed quote is given before anything starts.

  1. A building-by-building inspection lists the failed joints.
  2. The quote is fixed and split as suits you.
  3. We agree the programme and dates with you.
  4. Failed sealant is removed and the faces prepared.
  5. New sealant goes in with backing rod and primer where needed.
  6. We check the finished work and confirm the guarantee.

Getting the site ready

  • Point out any areas we must not close
  • Point out parking and an unloading spot
  • For older buildings, check the asbestos register before work

Get a fixed quote

Photos, drawings or a schedule of the joints and a fixed quote comes back to you. If the job needs a look first, we will arrange a site visit.

Ask for a quote

Advice

When to bring in a specialist

Certain joints really need a specialist: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong normally costs more in the end than doing them right.

Redoing a failed joint typically costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

What we’re called out for in Hensting

Sunlight and weather break mastic down over time. The surface chalks, the body stiffens and cracks appear most of all on the sunniest and most exposed elevations.

Things that usually lead to an enquiry:

  • Water getting in round frames after rain
  • Cracked, hardened mastic round windows on a block
  • Old repairs sealed over failed mastic
  • Open joints in brickwork or panels

If you are responsible for a building such as Church of the Holy Trinity, frame and door mastic needs the same attention as any other property.

Questions to ask before you book

  • How they’ll work around occupants
  • Is the sealant right for the movement and the substrate?
  • Their public liability cover
  • Whether their applicators hold CSCS cards

Our contractor checklist

What happens if it’s left?

Resealing ahead of leaks keeps it to a maintenance task. Once water has tracked in, the repair list grows and occupiers notice. Around Hensting, it’s better to renew all the failing joints at once. Photos of every joint help us quote for the whole job.

The price depends on how many linear metres there are, what has to come out first and the access. Call for a fixed quote once you have the details.

What you get with us

  • One phone line for London, the South East and Scotland
  • Colour agreed before work starts
  • Products installed to the manufacturer’s instructions
  • Public liability insurance in place

See our cost guide or our accreditations and insurance.

Accreditations

Trusted. Accredited. Insured.