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

Construction Mastic in Hounsdown

Construction mastic for Hounsdown, from a contractor working since 2005. Fully insured, with a 12-month guarantee.

  • Sanitary sealant damaged by following trades
  • New external sealant already peeling away
  • Missed perimeter joints on a new elevation
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
12-month guarantee on our workmanship.
London, the South East & Scotland
Constructionline member
£5m PL insurance

Construction mastic in Hounsdown

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

Owners, agents and contractors

Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Sites in Hounsdown can sit alongside others in a wider programme across Hampshire.

If you look after buildings for someone else, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end.

About our construction mastic in Hounsdown

We work to the specification and the programme rather than whatever product is to hand. Where the specification names a product, we use it, and if an alternative is proposed, it goes to you for acceptance first. Backing, primer and depth follow what the sealant maker sets out, so the joints perform as the designer intended. If you’re dealing with inconsistent sealant finishes from plot to plot and existing joints on a refurb that need cutting out and resealing, we can put it right, whatever the surface. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, in Hounsdown it comes down to the same thing: failed joints cut out, faces prepared and the right sealant laid to the right depth.

For a contractor on a smaller site near Hounsdown, one mastic visit at the right stage saves return trips. Tell us when scaffold comes down and when decoration finishes, and we will plan around those stages.

Work we carry out in Hampshire comes with a 12-month guarantee. Should something we installed fail, call the office on 01277 525 020 or send photos by email and we’ll come back to it.

Location
Hounsdown (SO40)
Wider area
Hampshire
Guarantee
A 12-month guarantee
Quotes
Fixed quote, scope in writing
Call
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Diagnose, treat, sign off

On arrival, we sign in, go through any site induction and check how permits are handled. Floors, finishes and fittings next to the joints are covered before anything is cut or cleaned, and the work typically takes whatever the programme allows, since the work follows the trades as areas are released. If neighbouring businesses or buildings around Hounsdown need work too, visits can be combined. Tell us your site hours and we will plan around them.

  1. Drawings, the sealant specification and your programme come to us for pricing.
  2. We return a fixed quote that ties the mastic package to your programme.
  3. Any site paperwork you need (RAMS, insurance certificate, CSCS details) is confirmed with the quote.
  4. Work follows the programme, area by area, as rooms and elevations become ready.
  5. Joints are cleaned, primed where the maker requires it, backed and sealed to the specification.
  6. Snags are cleared before handover and completed areas carry our 12-month guarantee.

Getting the site ready

  • Tell us what induction or permit system the site runs
  • Tell us which areas need to stay in use
  • Tell staff and tenants when we will be in

Quotes

Pricing a project or setting a maintenance budget? We will quote against your scope and drawings you can plan around. If you have questions first, ring 01277 525 020 or email a schedule or drawings.

Ask for a quote

Advice

New build and refits around Hounsdown

Hounsdown is within about 2 miles of the coast. Schemes this close to the sea see their facade joints tested by wind and rain from the day they’re sealed, and the sealant, primer and backing need choosing with that in mind. The South East is one of the drier parts of the UK. 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.

For contractors at a college like Totton College (1.2 miles north of Hounsdown), perimeters and internal sealant are timed for the holidays. Extensions at sites like Tatchbury Mount Hospital, 2.2 miles to the north-west of Hounsdown, usually sit beside working departments, and the mastic follows strict access rules.

Hounsdown is about 1 mile south of Totton, in Hampshire. Commercial clients in Hounsdown can call on us for mastic packages. We work across 723 places in Hampshire, large and small.

Anyone looking for construction mastic in SO40 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. We cover commercial and managed buildings on Main Road, Pound Lane and Chapel Lane. Nearby places we also cover include Ashurst Bridge (1 mile north-west), Totton (1 mile north), Netley Marsh (1 mile north-west), Woodlands (2 miles west) and Winsor (3 miles north-west) for mastic packages. Further afield, our area takes in Winchester (13 miles north-east), Eastleigh (8 miles north-east), Fareham (14 miles east), Chandler's Ford (7 miles north-east), Hedge End (9 miles east) and Lymington (10 miles south).

Around Hounsdown

Recent enquiries here include premises near The Forest Inn and Foxhills Infant School and the streets around them. For rail, the closest station is Totton station, about 1.1 miles north-east. Nearby you will also find Ashurst Hospital (1.4 miles south-west) and National Dairy Museum (0.8 miles south). For a walk, there’s Testwood Lakes.

Map of Hounsdown © OpenStreetMap contributors

Hounsdown: questions and answers

Does your area include sites such as Rushington Business Park, near Hounsdown?

Yes, sites like Rushington Business Park are within our area, along with the rest of Hounsdown. Send details of the unit and the work through our quote form for a quick quote.

Can you work on a hospital site such as Tatchbury Mount Hospital?

Yes, hospitals are one of the sectors we cover. Each area is agreed with the ward or department and the estates team in advance.

Is colour matching possible?

Often, yes. Many products come in a range of standard colours, and matching to RAL references or surrounding finishes is often possible. We confirm what’s available for the specified product when we quote.

When is resealing likely to be due?

Nobody can honestly give a figure in years, since movement, weather, cleaning and use all affect it. Regular inspection is the best way to catch problems early.

Does weather matter for sealant work?

It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Indoors, the weather is rarely a problem.

Do your applicators hold CSCS cards?

We’re CHAS accredited and a Constructionline member, and each applicator is CSCS-carded. Public liability insurance is in place.

Is the mastic package guaranteed?

Each package is signed off with a 12-month workmanship guarantee. Damage by others after we’ve finished isn’t covered.

What sealant work can’t fix

A proper diagnosis includes knowing what sealant can’t do. We will tell you if the real problem is any of the following:

  • Glazing units that are cracked or misted
  • Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
  • Specifying the product where the designer hasn’t

If you are not sure, just speak to us on 01277 525 020 or email drawings and photos and we’ll give you a straight answer before you book.

Joints and surfaces we work on

  • Internal decorators’ caulk
  • Cladding and panel joints
  • Floor and skirting junctions
  • Sanitary and kitchen joints
  • Brick and block movement joints
  • Window and door perimeters

What happens if it’s left?

A quick bead over a damaged joint can get an area past inspection, but it won’t last. Sealant can’t grip a contaminated or existing bead. We cut out and redo the joint properly. A failed joint lets water into a building whatever its size. Catching it early means a reseal rather than repairs.

The price depends on how many linear metres there are, what has to come out first and the access. Call for a fixed quote when you’re ready.

Why choose Mastic Doctor in Hounsdown

  • CHAS accredited contractor
  • One phone line for London, the South East and Scotland
  • Clear, fixed quotes
  • Our applicators hold CSCS cards

Take a look at how commercial sealant jobs are priced or our accreditations.

When to call us in Hounsdown

Frames installed with uneven gaps make perimeter sealing harder. Sealant has a range of joint widths it can cope with, so gaps outside that range need sorting by the installer first. We flag them early rather than filling them with sealant that won’t last.

Any of the following is a good reason to get the joints checked over:

  • Perimeter gaps outside the sealant’s range
  • External joints sealed in damp or cold conditions that are now failing
  • Different trades sealing to different standards
  • Bath and shower joints scraped during the final clean

Units on estates such as Rushington Business Park (to the north of Hounsdown) tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal.

Before you book anyone

  • Health and safety accreditation such as CHAS
  • Their plan for phasing and protecting the area
  • What site paperwork they can supply
  • Who will actually carry out the work

Our contractor checklist

When to bring in a specialist

Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

Accreditations

Trusted. Accredited. Insured.