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

Filmore Hill construction mastic

Sealant work in Filmore Hill for main contractors, managing agents and facilities managers: mastic packages for new-build and refurbishment projects, with a fixed quote first.

  • Cracks opening in caulked internal joints
  • Oversized or tapered gaps around new frames
  • Window and door perimeters that won’t pass inspection
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed quote for the work, with the scope in writing.
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
£5m public liability

Construction mastic for Filmore Hill sites

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

Looking after the joints

Regular inspection catches problems early. In particular:

  • Flag uneven or tapered frame gaps early
  • Keep product details for future maintenance
  • Brief following trades on areas that have been sealed
  • Don’t force external sealing on a damp or frosty day

At handover, keep the product details with the O&M information. Future maintenance is easier when the products are known, and tells you what to reseal with. Tell us what records you need and we’ll confirm with the quote.

A missed perimeter seal on one window can wet the reveal and the plaster inside. On a new building that means remedial work after decorating. A check of every frame before decorators start is worth the time.

Construction mastic in Filmore Hill, done properly

Mastic tends to be one of the final packages before handover, so it lands at exactly the point the programme is tightest. We work as a mastic subcontractor to main contractors and developers with projects in Filmore Hill, following the trades through the building as rooms and elevations become ready. We work on brick and block movement joints, floor and skirting junctions and cladding and panel joints, and the failures we’re asked to look at most are missed perimeter joints on a new elevation and failed sealant in an existing building being refurbished. A single leaking joint is often how a building in Filmore Hill first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.

For a site near Filmore Hill, the mastic visit is planned so the right sealants, primers and backing rod are on hand. Drawings, photographs and the programme let us give a fixed quote.

Every job ends the same way: guaranteed. Our workmanship is backed for 12 months, and we explain exactly what that covers when we quote.

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Filmore Hill (GU34)
Region
Hampshire
Guarantee
12 months on our workmanship
Quote
Fixed quote, scope in writing
Telephone
01277 525 020
Updated
3 November 2026

From enquiry to sign-off

Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Joint faces are cleaned back to sound, dry surfaces, primer goes on where the manufacturer specifies it, and each bead is tooled to a neat concave finish. If others near Filmore Hill need work, visits can be combined. You will have a fixed quote before work starts.

  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. Any site paperwork you need (RAMS, insurance certificate, CSCS details) is confirmed with the quote.
  4. Areas are sealed plot by plot or floor by floor as the trades hand them over.
  5. Each joint is prepared, backed to depth and sealed in the product the specification names.
  6. We close out snagging and hand over with a 12-month guarantee.

What we need from you

  • Flag any permit to work we will need
  • Tell staff and tenants when we will be in
  • Have the specification and drawings to hand

Quotes

Quotes are fixed against the scope you send, so the cost is agreed before work starts. To ask for one, call the office on 01277 525 020 or email us.

Get a quick quote

Advice

Construction mastic around Filmore Hill: how the place shapes the job

Filmore Hill lies roughly 52 miles out from central London. Construction around the commuter belt mixes station-side flats with refurbished offices and units, and each scheme needs its mastic sealed to programme. Rainfall across the South East, Filmore Hill included, is lower than in many parts of the UK. Even so, frost and condensation on steel and glass are common on winter mornings, so the external programme keeps a little slack.

Historic houses such as Hinton Ampner House, 4.2 miles west of Filmore Hill, are a reminder of the older buildings in the wider area, where sealing against old stone, brick or timber needs compatible products.

Filmore Hill is about 6 miles north-west of Petersfield, in Hampshire. Any commercial site in Filmore Hill is covered, for single jobs and planned programmes alike. 723 places across Hampshire fall within our area, Filmore Hill among them. Sites around Portsmouth have their own page, about 16 miles away.

Postcode districts covered here: GU34 for mastic packages. If your building is just outside Filmore Hill, we cover Bailey Green (1 mile east), Privett (1 mile east), West Tisted (1 mile north-west), Monkwood (2 miles north) and West Meon (2 miles south-west). Nearby towns on our patch include Winchester (11 miles west), Havant (13 miles south), Eastleigh (14 miles west), Fareham (14 miles south-west), Horndean (9 miles south) and Chandler's Ford (15 miles west).

Around Filmore Hill

Nearby you’ll also find Petersfield Community Hospital (5.6 miles south-east). Open spaces near Filmore Hill include Shutts Copse and Pidham Hill.

Map of Filmore Hill © OpenStreetMap contributors

Doing it in-house

Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.

What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.

Work for main contractors and building owners

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 Filmore Hill can sit alongside others in a wider programme.

If you look after buildings for someone else, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative.

Common questions from Filmore Hill clients

Will you fit the mastic around our build programme in Filmore Hill?

Yes, we work to the programme and the sequence the site sets. We’re CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.

Can you work on a hospital site such as Petersfield Community Hospital?

Yes. We work in healthcare settings as well as offices and schools. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

What if there’s asbestos in the old mastic?

The duty to manage asbestos sits with the building’s dutyholder, so for older buildings we ask for the asbestos register first. Work pauses if suspect material is found, until it has been tested.

Do you offer coloured sealant?

That depends on the product specified. Some ranges are wide, others limited, so we will confirm the colours available for the specified product with the quote.

Do you do internal caulk as well as external mastic?

External and internal frame perimeters, caulking where it’s specified, sanitary silicone, kitchen joints and snagging before handover. The scope follows your specification.

Do you use the sealant named in the specification?

Specification first, then the maker’s instructions. Preparation, backing and depth follow the product guidance.

What will the job cost?

Each job is quoted on its own details. To get one, give us a call on 01277 525 020 or email us.

Signs you need construction mastic in Filmore Hill

On a live site, contamination is the biggest threat to a new joint. Dust, film adhesive, damp and grease on the joint faces prevent a proper bond, so preparation matters as much here as on a reseal.

Clients normally get in touch after noticing something like this:

  • A long mastic snag list close to completion
  • Frame perimeters left unsealed or poorly sealed
  • Oversized or tapered gaps around new frames
  • Sealant knocked or painted over by other trades

Extensions at sites like Petersfield Community Hospital (to the south-east of Filmore Hill) usually sit beside working departments, and the mastic follows strict access rules.

What to look for in a quote

  • Which product they’ll use, and why it suits the joint
  • Their plan for phasing and protecting the area
  • Is depth set with backing rod, or bond-breaker tape in shallow joints?
  • Proof of insurance

Our contractor checklist

What happens if it’s left?

Patching snags as they appear can feel quicker than a proper close-out. But one planned snagging pass through each area typically clears more for less disruption and saves applicators coming back again and again. Snagging can be priced as a separate stage. Older rural buildings around Filmore Hill move with the seasons, and rigid or tired sealant can’t keep up. The right product, sized to the joint, copes much better.

We don’t publish prices, because the scope varies so much from one building to the next. For a fixed figure, call for a quote and we’ll price your job on its own details.

Why us?

  • Sealing commercial buildings since 2005
  • Our applicators hold CSCS cards
  • Workmanship guaranteed for 12 months
  • Failed material removed, not covered up

See how commercial sealant jobs are priced and our accreditations.

Accreditations

Trusted. Accredited. Insured.