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

Mastic sealing for building owners and managing agents in Well, Hampshire

Mastic sealing for building owners, managing agents and housing associations in Well and across Hampshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • Window mastic that has split and shrunk
  • Movement joints with sealant missing
  • Estate-wide sealant that is simply worn out
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS accredited
£5m PL insurance

Mastic sealing for businesses in Well

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

About our mastic sealing in Well

Across Well and the rest of Hampshire, we work the same way: send details, get a fixed quote, we seal, and the work is guaranteed. A list of buildings, a few photos and approximate joint numbers are enough for a quick quote, and site visits can be arranged. We work on shopfronts below residential blocks, communal entrances and stairwells and external wall and movement joints, and what we are called in for most is damaged joints in communal entrances and corridors and water getting in round frames after rain. One point of contact handles commercial sealant work in Well from the first photographs to the final walk-round, whether it’s one building or several.

Around smaller places like Well, older walls fitted with newer windows are a familiar sight. The mastic needs to suit an irregular masonry face and the look of the building.

Every job is signed off with a 12-month guarantee. The promise is simple: if our work fails within that year, we put it right.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Well (RG29)
Wider area
Hampshire
Cover
12 months on our workmanship
Quote
Fixed quote, scope in writing
Call
01277 525 020
Page updated
3 November 2026

Aftercare for building managers

Every sealant joint needs some looking after, and how long they last depends on how they’re treated. Our advice:

  • Have the asbestos survey to hand for older buildings
  • Prioritise elevations facing the weather
  • Make mastic part of routine maintenance checks
  • Keep bins and bikes away from communal door frames

Protect entrance and corridor joints from knocks where possible. Damage at low level is the most common reason communal joints fail early.

Left open, joint edges in render, brick or frames can deteriorate. Once that happens, repairs come before resealing and the job grows.

What happens if it’s left?

Adding sealant to cyclical maintenance is an easy win. Waiting until leaks appear means working under pressure with less control over timing. One visit to deal with every failing joint makes more sense than several trips to a place like Well, rather than one at a time. Photos of every joint help us quote for the whole job.

Pricing mastic joints depends on how many there are, their condition and the access, and any specification that applies. Call for a quote.

Why clients in Well choose us

  • Fully insured
  • 12 months’ guarantee on every job
  • Failed material removed, not covered up
  • Fixed quotes based on photos, drawings or a visit

See how commercial sealant jobs are priced and our accreditations and insurance.

Owners, agents and contractors

CHAS accredited and a Constructionline member, we’re straightforward to vet for your supplier list. We’re fully insured, and our insurance certificate can go with the quote.

FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.

Should maintenance staff do it?

The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.

Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.

On site: what to expect

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 the job ends with a walk round and sign-off. If others near Well 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. We agree the programme and dates with you.
  4. Failed sealant is removed and the faces prepared.
  5. Joints are resealed and tooled.
  6. Each building is checked and signed off with the 12-month guarantee.

Before we start on site

  • Send asbestos survey details if the building is pre-2000
  • Agree which areas must stay open
  • Make sure the joints can be reached

Ask for a quote

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

Ask for a quote

Advice

Frames, entrances and external joints in Well

Rainfall across the South East, Well included, is lower than in many parts of the UK. Outside work still depends on dry joints, and the sunniest, most exposed sides of a building usually need attention first. At about 40 miles from central London, Well is within reach of the capital. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres; their frame mastic often ages block-wide.

Student accommodation around universities such as University for the Creative Arts, 4.6 miles to the east of Well, is normally managed block by block, which suits a planned mastic programme. Schools and community buildings such as Lord Wandsworth College need frame and external mastic kept sound like any building.

Well is about 5 miles west of Farnham, in Hampshire. Across the RG29 postcode area, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. We work across 723 places in Hampshire. For work in that direction, see our Reading page (16 miles or so).

Anyone looking for mastic sealing in RG29 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Nearby places we also cover include Long Sutton (1 mile west), South Warnborough (2 miles west), Odiham (3 miles north), Broad Oak (3 miles north) and North Warnborough (4 miles north-west). Bigger towns within reach include Basingstoke (9 miles north-west), Farnborough (8 miles north-east), Fleet (5 miles north-east), Aldershot (7 miles east), Alton (5 miles south-west) and Petersfield (14 miles south).

Around Well

Well’s nearest station is Bentley (Hampshire) station, about 2.9 miles south-east of the centre. A little further out are Fleet Community Hospital (5.8 miles north-east) and Barley Pound (2.2 miles east). Open spaces near Well include Holybourne Hill and Dogmersfield Lake.

Map of Well © OpenStreetMap contributors

Well: questions and answers

Is Well too far out for you?

Not at all: smaller places are covered as well as towns. Our area covers London and the South East counties. Send photographs and a list of what needs doing, and we will plan the job to need as few trips as possible.

Can you quote for a block close to Bentley (Hampshire) station?

Yes. Managing agents, landlords, property factors and housing associations are who this service is for. Send the address, photos of the elevations and your access arrangements, and we’ll give a fixed quote.

Does weather matter for sealant work?

Outside, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Internal work is rarely affected.

Can you reseal a whole block or estate?

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

How soon can the area be used again?

Curing time varies by product, and we confirm it on the day, and flag anything to keep off until it has cured.

Do you supply RAMS and insurance details?

We’re CHAS accredited, a Constructionline member and carry public liability insurance. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.

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

No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.

When to call us in Well

Topping up old mastic is a common shortcut. New sealant won’t grip failed sealant, so these repairs rarely last.

If one of these sounds familiar, it’s time for a closer look:

  • A mix of products and colours from past repairs
  • Window mastic that has split and shrunk
  • No planned programme for sealant
  • Failed external movement joints

If you look after a block within reach of Bentley (Hampshire) station, 2.9 miles to the south-east of Well, frame and balcony mastic can be renewed on one programme.

Before you book anyone

  • How long is the guarantee, and what does it include?
  • Their plan for phasing and protecting the area
  • Whether their applicators hold CSCS cards
  • The named product and why it was chosen

How to choose a sealant contractor

Accreditations

Trusted. Accredited. Insured.