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

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

Mastic sealing for building owners, managing agents and housing associations throughout Ashurst and nearby, by CSCS-carded applicators. CHAS accredited and fully insured.

  • Failed external movement joints
  • Draughts at frames across a block
  • The same joint failures repeated across a portfolio
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
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Mastic sealing for businesses in Ashurst

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

Mastic sealing in Ashurst: the local picture

Ashurst lies within about 3 miles of the sea. Blocks and commercial buildings facing the sea take the most weather on their window perimeters and external joints. Ashurst sits in one of the drier corners of the country, the South East. Outside mastic still needs a dry joint and the right temperature, and south- and west-facing elevations, which take the most sun and rain, often age first.

Landlords with units on estates such as Rushington Business Park, 1 mile north-east of Ashurst, can bring frame, door and external mastic across several units into one programme. For a school such as Foxhills Infant School, perimeter mastic on windows and doors is a holiday job.

Ashurst is about 2 miles south of Totton, in Hampshire. Any commercial site in Ashurst is covered. 723 places across Hampshire fall within our area, Ashurst among them. For work in that direction, see our Southampton page.

Commercial sites across SO40 are covered for mastic joints. Among the streets we cover are Ash Grove, Cecil Avenue and Dene Road, and sites on any of them can send details for a fixed quote. Nearby places we also cover include Colbury (1 mile east), Lyndhurst (3 miles south-west), Emery Down (4 miles south-west), Balmerlawn (5 miles south) and Brockenhurst (6 miles south-west). Further afield, our area takes in Winchester (14 miles north-east), Eastleigh (9 miles north-east), Fareham (14 miles east), Chandler's Ford (8 miles north-east), Hedge End (9 miles east) and Lymington (10 miles south).

Around Ashurst

In Ashurst, that means premises near Hounsdown School and The Forest Inn, among other places. For rail, the closest station is Ashurst New Forest station, roughly 0.7 miles south-west. Nearby you will also find Ashurst Hospital (0.6 miles south-west) and National Dairy Museum (0.5 miles south-east). Green spaces nearby include Testwood Lakes.

Map of Ashurst © OpenStreetMap contributors

Mastic sealing in Ashurst, done properly

There isn’t one mastic for every joint on a building. 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. The enquiries we see most involve draught complaints from residents or tenants and complaints coming in block by block, on external wall and movement joints, communal kitchens and washrooms and window and door perimeters on blocks. Looking for mastic applicators who cover Ashurst? We’ve been sealing commercial buildings since 2005, with CSCS-carded applicators.

Owners and agents with buildings around smaller places such as Ashurst tend to manage small terraces of association properties, converted barns and commercial units. Frame and wall-joint mastic on all of them ages and hardens.

Our workmanship is guaranteed for 12 months, wherever the site is. If a joint we sealed fails because of how it was installed, we come back and put it right.

Location
Ashurst (SO40)
Region
Hampshire
Cover
12 months on every job
Price
Fixed quote, scope in writing
Telephone
01277 525 020
Updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Your questions answered

Will you work in a care home in Ashurst without moving residents out?

Yes. We work around residents’ routines, a room or two at a time. Tell us about any infection-control or safeguarding requirements and we’ll work to them.

Can you work at a site such as Rushington Business Park, by Ashurst?

Yes, sites like Rushington Business Park are within our area, along with the rest of Ashurst. To start, just ring 01277 525 020 or email drawings and photos with the unit, the joints involved and your access times.

Will you quote for a small job?

Single areas, one-off repairs and whole buildings are all quoted the same way: send details, get a fixed quote, we seal, guaranteed.

When is resealing likely to be due?

Nobody can honestly give a figure in years, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular checks let you plan resealing before leaks or damage.

Can you seal joints high up on a block?

Access is discussed and agreed before the quote is fixed. Tell us the number of storeys and whether scaffold or other access is planned and we’ll confirm the approach in 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, because fresh silicone will not bond with aged silicone.

Can you work to our specification?

Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.

What we’re called out for in Ashurst

Sunlight and weather break mastic down over time. The surface chalks, the body stiffens and cracks appear, especially on south and west faces.

These are often picked up first by site or facilities staff:

  • Mastic failing across several blocks on an estate
  • Occupiers reporting cold air round windows
  • Old repairs sealed over failed mastic
  • Window mastic that has split and shrunk

Older buildings near Ashurst, from historic houses such as Southampton Tudor House and Garden (to the east of Ashurst) to more modest stock, need compatible products when frames are resealed.

Questions to ask before you book

  • Will RAMS and insurance details be available?
  • What level of public liability insurance do they hold?
  • Health and safety accreditation such as CHAS
  • Is depth set with backing rod, or bond-breaker tape in shallow joints?

Choosing a commercial sealant contractor

What we can’t put right

Sealant solves a lot, but not everything, and we’re upfront when that’s the case. These need a different solution:

  • Glazing that needs replacing
  • Roof leaks, gutters or failed flashings that aren’t sealant joints
  • Masonry that has broken away beside the joint

Not sure which it is? You can call 01277 525 020 or email drawings and photos and we’ll tell you honestly before you book.

Surfaces we seal

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

Diagnose, treat, sign off

We follow your site rules from the start: signing in, inductions and any permit to work. Once we are cleared to begin, we take the joints in the sequence agreed with you, and each area is checked before we leave it. Jobs in and around smaller places like Ashurst are normally planned as a single visit, so photos and measurements up front really help. Then the right materials arrive with us.

  1. We check the asbestos register for older buildings and look at the joints.
  2. The products and programme are set out in a fixed quote.
  3. We strip out the old sealant.
  4. The joints are prepared and resealed with the right product.
  5. We finish each building before moving to the next.

Preparing the site

  • Tell us which areas need to stay in use
  • Send asbestos survey details if the building is pre-2000
  • Explain the parking and delivery arrangements

Request a quote

Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, call the office on 01277 525 020 or send photos by email.

Ask for a quote

Advice

How the job changes by surface

Estate-wide resealing programmes

Using the same products throughout keeps the estate consistent and easier to manage.

Window and door perimeters on blocks

Blocks have a mix of frame materials, so the grade we pick has to bond to frame and wall alike. We’ll confirm the colours available for the specified product.

When to bring in a specialist

Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

Cost factors for mastic joints

These are the things that shape the price:

  • Distance, for remote addresses
  • Quantities, in metres or numbers
  • The product specified
  • Phasing around occupants

Small jobs and large programmes are priced from the same things: scope, access, product and programme. Call for a quote, and you will have a fixed figure to work with.

What to include in your enquiry

For an accurate fixed quote, we need a clear picture of the site. Send us:

  • Access details, including height
  • Any specification or named product
  • Your programme or deadline
  • Where the site is, with the postcode

Tell us about the building, the joints and when you need the work done, and we’ll put a fixed quote together. The easiest way is to ring 01277 525 020 or send photos by email.

Accreditations

Trusted. Accredited. Insured.