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

Mastic Sealing in Upper Street

Mastic sealing in Upper Street, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.

  • Failed external movement joints
  • Damaged joints in communal entrances and corridors
  • Occupiers reporting cold air round windows
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Mastic sealing in Upper Street

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Block-wide mastic in Upper Street

Rainfall across the South East, Upper Street included, is lower than in many parts of the UK. External mastic still waits for dry faces and the right temperature, and south- and west-facing elevations, which take the most sun and rain, often age first.

Older buildings near Upper Street, from historic houses such as Breamore House, 0.5 miles north-east of Upper Street, to more modest stock, need compatible products when frames are resealed. Churches, halls and community buildings such as Church of St Mary are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time. Schools and community buildings such as Breamore Church of England Primary School need frame and external mastic kept sound like any building.

Upper Street is in Hampshire. We cover commercial sites throughout Upper Street, for single jobs and planned programmes alike. 723 places across Hampshire fall within our area, including Upper Street. Southampton is covered too, around 18 miles from Upper Street.

We take on mastic joints across the SP6 postcode area, for business premises of every kind. Just outside Upper Street, we also work in Breamore (1 mile south-east), Upper Burgate (1 mile south), Woodgreen (2 miles east), Lower Burgate (2 miles south) and Tinkers Cross (2 miles south). Bigger towns within reach include Totton (13 miles east), Romsey (14 miles east), Ringwood (8 miles south), Ashley (15 miles south-east), North Baddesley (15 miles east) and Eling (14 miles east).

Near you in Upper Street

Around Upper Street, our work takes us to commercial buildings near Bat and Ball pub and The Burgate School and Sixth Form and the streets around them. Other landmarks nearby include Fordingbridge Museum (2.5 miles south) and Salisbury District Hospital (5.5 miles north).

Map of Upper Street © OpenStreetMap contributors

Mastic sealing in Upper Street, done properly

Managing agents and housing associations typically need paperwork before anyone starts. For documents, tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We are CHAS accredited and a Constructionline member, with public liability insurance. If you have damp patches beside frames and estate-wide sealant that is simply worn out, we can help, on communal kitchens and washrooms, shopfronts below residential blocks and balcony and threshold joints alike. Searching for sealant specialists in Upper Street? We’ve been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.

For owners with a single building near Upper Street, we plan to finish in one visit where possible. Photos of each elevation help us quote accurately.

Whoever the client is, the cover is the same: a 12-month guarantee on our workmanship. It doesn’t extend to damage, faults in the building or work by others, and we are upfront about that.

Where
Upper Street (SP6)
Wider area
Hampshire
Guarantee
A 12-month guarantee
Quotes
A fixed quote before we start
Call
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Should maintenance staff do it?

Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

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.

Questions about Upper Street

Is Upper Street off your patch?

No. Places such as Upper Street are covered as much as the big towns. We work across Greater London and the South East. We plan jobs in smaller places so return trips are kept to a minimum.

Is Arch Farm Industrial Estate, near Upper Street, within your area?

Yes. We cover Upper Street and the area around it, including industrial estates, business parks and retail parks such as Arch Farm Industrial Estate. To start, just speak to us on 01277 525 020 or send photos by email with the unit, the joints involved and your access times.

What guarantee do you give on resealing?

Every building we reseal has a 12-month guarantee. It covers our workmanship, not later building movement, damage or frame failures.

Do you work for managing agents and housing associations?

Yes. Most of our mastic sealing is for agents, factors, housing associations and portfolio landlords, and we quote building by building or as a programme.

What will the job cost?

Each job is quoted on its own details. For yours, speak to us on 01277 525 020 or email drawings and photos with a description of the work.

Do you need to see the site first?

Photos, drawings or a schedule are often enough to quote. Where they aren’t, we arrange a site visit.

Do you take on small jobs?

Small jobs are welcome alongside larger packages. Photos and a description are enough to start.

What affects the price in Upper Street

Before we quote, we look at:

  • Which sealant the job calls for
  • Any access equipment needed
  • Removal of failed or old sealant
  • The site’s rules and procedures

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 quote and we’ll explain how it’s made up.

Before you send an enquiry

Whether it’s one area or a whole building, these details speed things up:

  • Whether the building will be occupied during the work
  • Access details, including height
  • Clear photos of the problem areas
  • When you need the work done

For a fixed quote, give us a call on 01277 525 020 or email a schedule or drawings, telling us the site location and the nature of the job. Our quote form is another easy route.

After the work

To get the most from the new sealant:

  • Check the asbestos register before any old mastic is disturbed
  • List the paperwork your organisation requires when you send details
  • Include mastic in your cyclical inspections
  • Track which buildings were done and when

If a joint we sealed fails within 12 months, tell us and we’ll look at it. After that, regular inspection keeps the programme on track.

Failed mastic often goes unnoticed until heavy rain finds it. Acting at the first signs keeps it a straightforward reseal and saves internal repairs.

When it isn’t the sealant

Not every problem is a sealant problem, and we’re upfront when that’s the case. These need a different solution:

  • Failed window or door frames, which need a window contractor
  • Asbestos-containing sealant, which we don’t remove
  • Roof leaks, gutters or failed flashings that aren’t sealant joints

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

Where we work in Upper Street

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

How the job changes by surface

Planned maintenance

Resealing can be scheduled alongside other planned works, building by building.

Estate-wide resealing programmes

Consistent products and colours across an estate make future maintenance simpler and easier to manage.

Our process

We schedule the visit to fit the site hours and access windows you give us. While we are working, the area stays contained and tidy, and your contact hears from us before we move to the next area. Smaller jobs around Upper Street can be grouped with others nearby. A fixed quote is given before anything starts.

  1. Each block or building is walked and the failed joints recorded with the likely cause.
  2. We send a fixed quote that sets out the joints, the products and the programme.
  3. The sequence and the dates are fixed with you, giving you what you need to notify occupiers.
  4. We remove the old mastic completely and clean the joint faces back.
  5. Backing rod and primer go in as the joint requires, then the new bead is placed and tooled.
  6. Finished joints are looked over and the 12-month guarantee confirmed.

Before we start on site

  • Point out any areas we must not close
  • Let us know about inductions and permits
  • For older buildings, check the asbestos register before work

Ask for a quote

Send us photos, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we will arrange one.

Get a price

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