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

Amport mastic sealing

Commercial sealant work in Amport for contractors, FMs and building owners: mastic sealing for building owners, managing agents and housing associations, with a fixed quote first.

  • Water getting in round frames after rain
  • Repeated reactive repairs to the same buildings
  • Mastic failing across several blocks on an estate
1
Send details
Send the specification, photos or a marked-up plan.
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
12-month guarantee on our workmanship.
South East, London & Scotland
Constructionline member
£5m PL insurance

Mastic sealing for businesses in Amport

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

Mastic sealing for commercial buildings in Amport

Owners and agents typically inherit a building’s mastic rather than choose it and it slowly wears out: window perimeters, door frames, external joints and communal junctions all rely on it. When it hardens, splits or pulls away, water and draughts follow, and occupiers start reporting it. Site teams most often ask us about damp patches beside frames and mastic failing across several blocks on an estate, across shopfronts below residential blocks, communal kitchens and washrooms and communal entrances and stairwells. Whether you call it commercial sealant work, mastic application or joint sealing, in Amport it comes down to the same thing: failed joints cut out, faces prepared and the right sealant laid to the right depth.

For buildings around smaller places like Amport, we group work so one trip covers it. Photos of each elevation help us quote accurately.

Guaranteed is the last step of every job. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Amport (SP11)
Wider area
Hampshire
Cover
A 12-month guarantee
Price
Fixed quote, scope in writing
Call
01277 525 020
Last updated
3 November 2026

Building owners, agents and FMs in Amport

We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in Amport can sit alongside others in a wider programme across Hampshire.

Agents, factors and owners’ representatives all follow the same route: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.

For owners and agents in Amport

Amport sits in one of the drier corners of the country, the South East. Outside mastic still needs a dry joint and the right temperature, while the elevations that take the most sun tend to show hardened mastic first. Central London is about 67 miles from Amport. Managed blocks of flats are a big part of commuter-belt property; their frame mastic often ages block-wide.

For a school such as Amport Church of England Primary School, perimeter mastic on windows and doors is a holiday job. Property owners at sites such as Weyhill Business Park (1.5 miles north of Amport) can have mastic renewed between lettings. If you’re responsible for a building such as Church of St Mary, frame and door mastic needs the same attention as any other property.

Amport is about 4 miles west of Andover, in Hampshire. Amport sits inside our coverage, with the same fixed quotes and 12-month guarantee as everywhere else. We work across 723 places in Hampshire, from busy centres to rural villages. There’s a separate page for Southampton, about 21 miles away.

Work on mastic joints is covered throughout SP11, whatever the building. Close to Amport, our area also takes in Fox (1 mile south-west), Monxton (1 mile east), Abbotts Ann (2 miles east), Little Ann (2 miles east) and Kentsboro (3 miles south). Further afield, our area takes in Winchester (15 miles south-east), Andover (4 miles east), Romsey (15 miles south), Hyde (14 miles south-east), Tidworth (5 miles north-west) and Weeke (14 miles south-east).

What’s near Amport

Around Amport, our work takes us to commercial buildings near White Horse Inn. The closest station to Amport is Grateley station, about 2.7 miles south-west. Nearby you’ll also find Ludgershall Castle (4.8 miles north-west) and Andover War Memorial Hospital (3.7 miles east). For a walk, there’s Mill Lake and Quarley Hill.

Map of Amport © OpenStreetMap contributors

Questions about Amport

Is Amport off your patch?

Not at all. Amport is within our area. London and every South East county are within our area. We plan jobs in smaller places so return trips are kept to a minimum.

We manage a building near Grateley station. Can you help?

Yes. Blocks of any size are within what we do. Send the address, photos of the elevations and your access arrangements, and we’ll give a fixed quote.

How long will the new sealant last?

There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular checks let you plan resealing before leaks or damage.

How soon can the area be used again?

That comes down to the sealant and the temperature. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.

Do you guarantee the mastic work?

A 12-month guarantee covers our work. It applies to our workmanship rather than damage or problems with the frames.

Can you plan resealing across several buildings?

Yes. We survey and price each building, then work through them in order starting wherever is most urgent.

Is it fine to apply new sealant on top of old?

No. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.

What we can’t put right

Being straight saves everyone time. Fresh joints won’t solve:

  • Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
  • Misted or failed double-glazed units
  • Masonry that has broken away beside the joint

If you’re not sure, just phone 01277 525 020 or email the details over and we will give you a straight answer before you book.

Where we work in Amport

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

On site: what to expect

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 anything is cut or cleaned, and the work typically takes one or more days per building, depending on the joint lengths and the access. If others near Amport need work, visits can be combined, which keeps travel down. You will have a fixed quote before work starts.

  1. A building-by-building inspection lists the failed joints.
  2. The quote is fixed and split as suits you.
  3. Dates and areas are agreed so occupiers can be told.
  4. Old mastic is removed and the joint faces prepared.
  5. Joints are resealed and tooled.
  6. Each building is checked and signed off with the 12-month guarantee.

Preparing the site

  • Flag any permit to work we will need
  • Point out parking and an unloading spot
  • Send asbestos survey details if the building is pre-2000

Get a fixed quote

If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.

Get a quick quote

Related advice

Why deal with it now?

Replacing mastic before water gets in is a planned job. After water has got in, there may be damp, damaged plaster or decoration to put right too, and the complaints come with it. One visit to deal with every failing joint makes more sense than several trips to a place like Amport, rather than one at a time. Send photos of each area and we’ll quote for the lot.

Pricing mastic joints depends on how many there are, their condition and the access, plus any specification you’re working to. Call for a quote.

Why clients in Amport choose us

  • Constructionline member for supplier checks
  • Colours confirmed for the specified product
  • 12 months’ guarantee on every job
  • One phone line for London, the South East and Scotland

Take a look at what affects the cost and our accreditations and insurance.

How the quote is worked out

We price every job individually. The main factors are:

  • Distance, for remote addresses
  • Removal of failed or old sealant
  • Working within restricted access windows
  • The total length or number of joints

The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote.

Before you send an enquiry

The more we know, the firmer the quote. Helpful details to send:

  • Rough lengths or quantities, or drawings if you have them
  • The asbestos register, for older buildings
  • A wide shot and a close-up of the area
  • The product your specification calls for

Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we’ll return a fixed quote you can plan around. If you have questions first, speak to us on 01277 525 020 or send photos by email.

Aftercare for building managers

Regular inspection catches problems early. Specifically:

  • Make it easy for occupiers to report draughts
  • Include mastic in your cyclical inspections
  • Mention RAMS, insurance or CSCS requirements up front
  • Check the asbestos register before any old mastic is disturbed

Our workmanship is covered for 12 months, so report any failure in that time. Beyond that, routine checks spot the next round of repairs.

Budgets are easier to plan when sealant is part of planned maintenance. A programme can start with the worst buildings and work down the list.

Accreditations

Trusted. Accredited. Insured.