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

Construction and new-build mastic in Greywell, Hampshire

Sealant work in Greywell for main contractors, managing agents and facilities managers: mastic packages for new-build and refurbishment projects, quoted at a fixed price.

  • Snag items on joints that need redoing before handover
  • Frame perimeters left unsealed or poorly sealed
  • Frame gaps too wide for sealant alone
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
Constructionline member
Fully insured: £5m PL

Construction mastic for businesses in Greywell

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

How we handle construction mastic in Greywell

Since 2005 we’ve worked alongside main contractors, developers and fit-out firms. We price from drawings and the specification, agree the sequence with the site team and seal as areas are released. To price a package in Greywell, send drawings and the specification through our quote form. If you have external joints sealed in damp or cold conditions that are now failing and frame perimeters left unsealed or poorly sealed, we can help. One point of contact handles commercial sealant work in Greywell from the first photos to the final walk-round, for single jobs and planned programmes alike.

For a site near Greywell, the mastic visit is planned so the right sealants, primers and backing rod are on hand, timed to the stage the job has reached. Drawings, photos and the programme let us give a fixed quote.

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.

Where
Greywell (RG29)
Region
Hampshire
Guarantee
A 12-month guarantee
Quote
Fixed quote, scope in writing
Call
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Signs you need construction mastic in Greywell

A joint without backing rod or bond-breaker often fails early. Bonded to the base of the joint and both sides, sealant can’t stretch evenly.

Look out for the following:

  • Sanitary sealant damaged by following trades
  • Oversized or tapered gaps around new frames
  • Missed perimeter joints on a new elevation
  • Old sealant on a refurbishment that needs stripping before new work

School extensions, at buildings such as Robert May's School, usually run to the summer holidays, mastic included.

Comparing quotes

  • Their public liability cover
  • Is depth set with backing rod, or bond-breaker tape in shallow joints?
  • How they handle RAMS and site documents
  • Are they CHAS accredited or on Constructionline?

How to choose a sealant contractor

Contractors’ notes for Greywell

Greywell is about 41 miles from central London. Towns within reach of London tend to keep building, from flats to offices and schools, which keeps mastic packages in demand. Greywell sits in one of the drier corners of the country, the South East. 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.

Extensions at sites like Fleet Community Hospital (to the east of Greywell) normally sit beside working departments, and the mastic follows strict access rules. When units on a site such as Murrell Green Business Park, 2.6 miles north-east of Greywell, are refurbished or reclad, the panel joints and window perimeters are part of the mastic package.

Greywell is about 6 miles east of Basingstoke, in Hampshire. Any commercial site in Greywell is covered, whether it’s a single job or part of a planned programme. Our Hampshire coverage takes in 723 places. For work in that direction, see our Reading page, about 13 miles away.

Work on mastic packages is covered throughout RG29. For a building on The Street, Hook Road and Dorchester Way or nearby, we can quote for mastic packages. We also cover Warnborough Green (1 mile north-east), North Warnborough (1 mile east), Up Nately (1 mile north-west), Nately Scures (1 mile north-west) and Hook Common (1 mile north). Nearby towns on our patch include Basingstoke (6 miles west), Farnborough (9 miles east), Fleet (6 miles east), Aldershot (9 miles east), Alton (8 miles south) and Yateley (8 miles north-east).

What’s near Greywell

We work on buildings around Fox And Goose Public House. Greywell’s nearest station is Hook station, roughly 1.4 miles north of the centre. A little further out are West Green House Agricultural Museum (3.4 miles north-east) and Odiham Castle (less than half a mile north-east). Open spaces near Greywell include Tundry Hill and The Mill Field.

Map of Greywell © OpenStreetMap contributors

What sets the cost

Each job is priced on its own details. The main factors are:

  • The total length or number of joints
  • Access and working height
  • Working within restricted access windows
  • Distance, for remote addresses

The product called for affects the cost, as does the preparation each joint needs. Access, phasing and site rules also count.

Details that help us quote

Good information means a firmer quote. Helpful details to send:

  • Any specification or named product
  • The asbestos register, for older buildings
  • Whether the building will be occupied during the work
  • Your programme or deadline

Need a figure for a tender or a budget? We will quote against your scope and drawings that you can work with. For a chat about it beforehand, ring 01277 525 020 or use the quote form.

Why it’s worth doing now in Greywell

Leaving mastic to whichever trade is fitting the element can look cheaper on paper. The result tends to be uneven finishes and arguments about who should seal what. A single mastic package gives one point of responsibility and a consistent finish. Converted and older buildings near places like Greywell tend to move, and aged sealant cracks. The right product, sized to the joint, copes much better.

Every site prices differently: joint size, product, access and site hours all play a part. A fixed quote follows once we understand the job.

Why appoint us

  • Over 20 years of commercial sealing
  • CHAS accredited
  • One phone line for London, the South East and Scotland
  • Coloured sealants to suit the setting, where available

See how commercial sealant jobs are priced and our accreditations.

Diagnose, treat, sign off

Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Any old material is cut back to clean, sound faces, primer goes on where the manufacturer specifies it, and each bead is tooled to a neat concave finish. For a building around Greywell, tell us how to find it and who will meet us. Send that with the details and we will confirm the plan with the quote.

  1. We start with the drawings, specification and programme.
  2. We take off quantities and return a fixed quote.
  3. The sequence is agreed with the site manager.
  4. Each area is sealed when it’s released.
  5. Every joint is cleaned, set to depth and sealed with the specified product.
  6. After snagging, the work is handed over under our 12-month guarantee.

What we need from you

  • Tell staff and tenants when we will be in
  • For older buildings, check the asbestos register before work
  • Point out parking and an unloading spot

Getting a fixed quote

For a fixed quote, speak to us on 01277 525 020 or email the details over with the site address and an outline of the work. Our quote form is another easy route.

Get a price

Related advice

What we can’t put right

Being straight saves everyone time. New sealant won’t cure:

  • Defective windows, doors or glazing units (the supplier or installer’s job)
  • Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
  • Rework caused by others damaging completed areas

If in doubt, ring 01277 525 020 or use the quote form and we will say what we think before you book.

Where we work in Greywell

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

Common questions from Greywell clients

Would you work within a site like Fleet Community Hospital?

Yes. We work in healthcare settings as well as offices and schools. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

Can you work at a site such as Murrell Green Business Park, by Greywell?

Yes. Estates, retail parks and business parks around Greywell, Murrell Green Business Park among them, are all within reach. Photos and a short description are enough for a first look.

Do you have public liability insurance?

Yes. We’re fully insured, and the certificate can go with your quote.

Can you fit around our programme?

We seal plot by plot or floor by floor as areas are released. The sequence is agreed with the site manager at the start and adjusted as things change.

What do you charge?

It depends on the job: quantities, access, the product and any phasing. Call for a quote.

Does the weather affect the work?

Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.

Can you clear a mastic snag list before handover?

Yes. We can work through a mastic snag list area by area before handover, cutting out damaged or poor joints and resealing them.

Surface by surface

External facade and movement joints

Many facade substrates need a primer before sealing. Primer goes on where the sealant maker calls for it and work only when conditions suit.

Internal decorators’ caulk

Acrylic caulk fills internal gaps around trims, boards and frames ahead of decorating. It’s paintable and suits gaps that don’t move, and we use a flexible sealant where there’s movement.

Accreditations

Trusted. Accredited. Insured.