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

Construction and new-build mastic in Fullerton, Hampshire

Mastic packages for new-build and refurbishment projects across Fullerton, carried out by CSCS-carded applicators. CHAS accredited and fully insured.

  • Early adhesion failures on new external joints
  • Internal caulk splitting as the building dries out
  • Missed perimeter joints on a new elevation
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Construction mastic for Fullerton sites

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

Construction mastic for commercial buildings in Fullerton

On a new build, the mastic package is one of the last trades through each area. We work as a mastic subcontractor to main contractors and developers with projects in Fullerton, sealing plot by plot or floor by floor as areas are released. Most enquiries involve sanitary sealant damaged by following trades and external joints sealed in damp or cold conditions that are now failing, on floor and skirting junctions, brick and block movement joints and window and door perimeters. A specialist sealant contractor works differently from a general builder: on jobs in Fullerton, preparation and product choice get the time they need.

For a site near Fullerton, the mastic visit is planned so the right sealants, primers and backing rod are on hand. Send drawings or photos and the programme and we’ll quote to suit.

What our 12-month guarantee covers is the way we did the job: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Fullerton (SP11)
Region
Hampshire
Cover
12 months on every job
Price
Quoted before any work starts
Call
01277 525 020
Updated
3 November 2026

Doing it in-house

Certain joints really need a specialist: for example fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong usually costs more in the end than doing them right.

Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

How a job runs

Before any cutting starts, the area is protected: tape along each joint edge and covers over finishes, stock and equipment close by. On site, the work normally takes a day or two on a small fit-out and several weeks on a large multi-storey package, and we clear our waste as we work. Rural sites near Fullerton may need directions, gate codes or a contact on site. Send that with the details and we will confirm the plan with the quote.

  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. You tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we confirm it with the quote.
  4. Work follows the programme, area by area, as rooms and elevations become ready.
  5. Every joint is prepared, set to depth and sealed with the specified product.
  6. Snags are cleared before handover and completed areas carry our 12-month guarantee.

Before we start on site

  • Tell us which areas need to stay in use
  • Send asbestos survey details if the building is pre-2000
  • Move anything stored against the joints

Getting a fixed quote

A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Share whatever details you have and we’ll fill any gaps with a visit.

Ask for a quote

Related advice

Honest limits

We seal joints; we don’t mend everything behind them. Sealant alone won’t deal with:

  • Specifying the product where the designer hasn’t
  • Frame gaps too wide for sealant, which the installer needs to correct
  • Damage to finishes by other trades after we’ve sealed

Not sure which it is? You can call the office on 01277 525 020 or email the details over and we’ll tell you honestly.

Where we work in Fullerton

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

What the job involves on each surface

External facade and movement joints

External movement joints often need primer, depending on the substrate. We prime where the manufacturer specifies.

Snagging before handover

Snags typically come from damage by following trades, missed joints or poor earlier work. Snagging can be included or priced separately, depending on what suits the programme.

Questions about Fullerton

Is a hospital such as Andover War Memorial Hospital somewhere you can work?

Yes. Healthcare sites are among the places we work. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

Is Fullerton 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. We plan jobs in smaller places so return trips are kept to a minimum.

How long will the new sealant last?

It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.

How long does a job like this take?

That varies with the scale of the job, but the work typically takes a few days on a modest refurbishment and longer on multi-plot or multi-storey schemes. For bigger or phased jobs, we’ll set out a timescale with the quote.

What hours do you work?

Give us your site hours and any access windows in your enquiry, and we’ll plan around them. You can reach the office between 8am and 5pm, Monday to Friday.

What about RAMS and site documents?

Each site asks for different documents, so tell us what you need and we’ll confirm it when we quote.

Will you come and look before quoting?

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

What we are called out for in Fullerton

Frames installed with uneven gaps make perimeter sealing harder. Sealant has a range of joint widths it can cope with and gaps beyond it need packing or adjusting by the frame installer. We flag them early rather than filling them with sealant that won’t last.

Clients usually get in touch after noticing one or more of the following:

  • External joints sealed in damp or cold conditions that are now failing
  • A mastic package split between trades with no clear owner
  • Snag items on joints that need redoing before handover
  • Cracks opening in caulked internal joints

For a contractor working at a hospital such as Andover War Memorial Hospital, 4.6 miles north of Fullerton, perimeter and facade sealing is planned around patients and deliveries.

Before you book anyone

  • Are they CHAS accredited or on Constructionline?
  • What level of public liability insurance do they hold?
  • Whether primer will be used where the manufacturer specifies it
  • Can the work be phased to keep areas open?

How to choose a sealant contractor

Facades, frames and programmes in Fullerton

Rainfall across the South East, Fullerton included, is lower than in many parts of the UK. That doesn’t stop wet spells, or frosty starts that leave panels too damp to seal, which is why external dates are agreed with the site manager. Fullerton lies roughly 64 miles out from central London. Construction around the commuter belt mixes station-side flats with refurbished offices and units, which keeps mastic packages in demand.

On any site in or around Fullerton, the mastic follows the specification and the programme.

Fullerton is about 4 miles south of Andover, in Hampshire. Looking for construction mastic in Fullerton? We can help. Fullerton is one of 723 places in Hampshire on our list for mastic packages. There’s a separate page for Southampton, roughly 16 miles from Fullerton.

We cover the SP11 postcode districts for mastic packages. Nearby places we also cover include Cottonworth (1 mile north-east), Chilbolton (1 mile east), Leckford (1 mile south), Wherwell (1 mile north-east) and Wherwell Wood (2 miles north) for mastic packages. Further afield, our area takes in Winchester (9 miles south-east), Eastleigh (14 miles south), Andover (4 miles north), Chandler's Ford (12 miles south), Romsey (11 miles south) and Hyde (9 miles south-east).

What’s near Fullerton

Locally, jobs take us to sites close to Longstock Park. The closest station to Fullerton is Andover station, about 4.3 miles north of the centre. A little further out are Andover War Memorial Hospital (4.6 miles north). Green spaces nearby include Anton Lakes and Mill Lake.

Map of Fullerton © OpenStreetMap contributors

Maintenance after handover

After handover, these steps help:

  • Brief following trades on areas that have been sealed
  • Keep product details for future maintenance
  • Flag uneven or tapered frame gaps early
  • Get the mastic subcontractor involved early in the programme

A new structure shifts as it loses construction moisture. Flexible sealants in the right joints handle normal movement, but caulk in a joint that moves more than expected may crack. We can advise if a joint needs a different product.

Sanitary joints that fail early become defects soon after occupation. Water gets behind trays, vanity tops and panels. Getting the product and preparation right first time avoids that.

Accreditations

Trusted. Accredited. Insured.