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

Mastic contractors in New Copse

Work needed on a mastic package in New Copse? We assess it, carry out the work and guarantee our workmanship for 12 months.

  • Caulk cracking where joints are moving more than expected
  • A mastic package split between trades with no clear owner
  • Frame gaps too wide for sealant alone
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS & Constructionline
£5m public liability

Construction mastic across New Copse

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

About our construction mastic in New Copse

Mastic Doctor has been a subcontractor on construction projects for over 20 years. We price from drawings and the specification, agree the sequence with the site team and seal as areas are released. For construction mastic on a scheme in New Copse, send drawings through our quote form, or phone or email us to talk it through. Most enquiries involve mastic snags holding up handover and inconsistent sealant finishes from plot to plot, across floor and skirting junctions, window and door perimeters and cladding and panel joints. A specialist sealant contractor works differently from a general builder: on jobs in New Copse, preparation and product choice get the time they need.

In the countryside around places like New Copse, conversion schemes put new frames into old stone, flint, brick or timber. Those joints need a sealant that suits an uneven, sometimes porous surface, and often a colour chosen for the building.

We stand by our work with a 12-month guarantee. It covers how we prepared and applied the sealant, and we come back if anything isn’t right.

Location
New Copse (GU34)
Region
Hampshire
Guarantee
A 12-month guarantee
Price
A fixed quote before we start
Telephone
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

What sets the cost

A fixed quote reflects the actual work. It allows for:

  • The product specified
  • Working within restricted access windows
  • Induction, permit and paperwork requirements
  • Removal of failed or old sealant

Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.

Before you send an enquiry

The more we know, the firmer the quote. When you get in touch, include:

  • Access details, including height
  • Whether the building will be occupied during the work
  • Photos of the joints, close up and from further back
  • Specification clauses that apply

Tell us about the building, the joints and when you need the work done, and we’ll put a fixed quote together. To get it moving, phone 01277 525 020 or send photos by email.

Work for main contractors and building owners

We work for building owners and managing agents on sealant work across single buildings or whole portfolios around New Copse. Several sites can go on one quote, so there’s one set of paperwork to deal with.

Blocks and communal areas make up much of the work for housing associations and agents. Work can be phased so residents and staff keep access throughout, and each stage is agreed with your contact.

General trades versus a specialist

A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong typically costs more in the end than doing them right.

Surface by surface

Snagging before handover

Damaged, missed or untidy joints make up most snag lists. We price snagging as part of the package or as a separate visit, depending on what suits the programme.

External facade and movement joints

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

Honest limits

Sealant solves a lot, but not everything, and we’d rather tell you before you spend money. It won’t fix:

  • Specifying the product where the designer hasn’t
  • Deciding which fire-stopping product a penetration needs
  • Frames fitted out of tolerance

If in doubt, phone 01277 525 020 or email drawings and photos and we’ll say what we think.

Joints and surfaces we work on

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

New Copse: questions and answers

Is New Copse too small for you to travel to?

No. Small places get the same service as large ones. 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.

Does your area include sites such as Lower Soldridge Business Park, near New Copse?

Yes, sites like Lower Soldridge Business Park are within our area, along with the rest of New Copse. To start, just call 01277 525 020 or send photos by email with the unit, the joints involved and your access times.

Will you quote for a small job?

We quote for single jobs as well as large packages and programmes. Photos and a description are enough to start.

Do you use the sealant named in the specification?

We follow the specified sealant, and we will raise it if something in it doesn’t suit the joint. Product standards such as BS EN 15651 are often named in specifications.

What if there’s asbestos in the old mastic?

Managing asbestos is the dutyholder’s responsibility, so for older buildings we ask for the asbestos register first. Work pauses if suspect material is found, until it has been tested.

What site paperwork can you supply?

Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote.

Do you seal on top of existing sealant?

No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.

New build and refits around New Copse

New Copse lies roughly 49 miles out from central London. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, so mastic packages have to keep pace with busy programmes. Rainfall across the South East, New Copse 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, so external mastic is timed for workable conditions and agreed with the site manager.

Older buildings in the area around New Copse, such as Bentworth Hall (0.9 miles north-east of New Copse), need care when sealed: the product has to suit soft or historic materials. Recladding or extending a unit at a site like Lower Soldridge Business Park (to the south of New Copse) brings panel joints and frame perimeters into the programme. For a contractor working at a hospital such as Alton Community Hospital (3.2 miles east of New Copse), perimeter and facade sealing is planned around patients and deliveries.

New Copse is about 4 miles west of Alton, in Hampshire. We cover New Copse and the rest of Hampshire, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. New Copse is one of 723 places we cover in Hampshire for mastic packages. Our Southampton page has more on work in that area, about 21 miles away.

Commercial sites across GU34 are covered. Just outside New Copse, we also work in South Town (1 mile south), Holt End (1 mile north), Hattingley (1 mile south-west), Wivelrod (1 mile east) and Bentworth (1 mile north-east). Bigger towns within reach include Basingstoke (9 miles north), Winchester (12 miles south-west), Fleet (14 miles north-east), Aldershot (15 miles north-east), Alton (4 miles east) and Petersfield (11 miles south-east).

Near you in New Copse

For rail, the closest station is Alton station, roughly 4.3 miles east. Other landmarks nearby include Alton Community Hospital (3.2 miles east) and Gliding Heritage Centre (3.7 miles north-east). The countryside around New Copse includes King's Hill.

Map of New Copse © OpenStreetMap contributors

Our process

We follow your site rules from the start: signing in, inductions and any permit to work. Once we’re cleared to begin, the joints are worked through in the order agreed with your site contact. For work around New Copse, we aim to finish in one visit, so we ask for photographs and rough sizes first. Then the right materials arrive with us.

  1. We walk the site or review drawings to understand the package.
  2. A fixed quote sets out scope, products and phasing.
  3. Paperwork is agreed and applicators are inducted on site.
  4. We seal plot by plot or floor by floor in line with the programme.
  5. Problems we find, such as oversized gaps, are raised straight away.
  6. Final snagging is completed and the 12-month guarantee applies.

Preparing the site

  • Tell us what induction or permit system the site runs
  • Let building users know which areas are affected
  • Share the asbestos register for older buildings

Quotes

We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To ask for one, speak to us on 01277 525 020 or email drawings and photos.

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