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

Mastic sealing for building owners and managing agents in New Forest, Hampshire

Our CSCS-carded applicators take on mastic sealing for building owners, managing agents and housing associations in New Forest. Send details for a fixed quote.

  • A mix of products and colours from past repairs
  • The same joint failures repeated across a portfolio
  • Draughts at frames across a block
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
Constructionline member
£5m PL insurance

Mastic sealing for businesses in New Forest

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

Different surfaces, different methods

Estate-wide resealing programmes

Housing associations and agents often manage many similar blocks. Each block is priced and scheduled in order.

Window and door perimeters on blocks

Perimeter joints on blocks are best done elevation by elevation or block by block. Access is agreed with you before the quote is fixed.

About our mastic sealing in New Forest

Before work starts, most agents and landlords want the documents in order. For documents, tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We are CHAS accredited and a Constructionline member, with public liability insurance. If you have window mastic that has split and shrunk and damaged joints in communal entrances and corridors, we can put it right, on communal entrances and stairwells, shopfronts below residential blocks and window and door perimeters on blocks alike. Most enquiries from New Forest start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.

In and around smaller places like New Forest, landlords and agents often look after small groups of housing association properties, converted farm buildings and community buildings. Mastic around frames and on external joints wears out in time, whatever the building.

Whoever the client is, the cover is the same: twelve months on the work we carried out. It doesn’t extend to damage, faults in the building or work by others, and we are upfront about that.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
New Forest (SP6)
Region
Hampshire
Guarantee
A 12-month guarantee
Price
Fixed quote, scope in writing
Telephone
01277 525 020
Last updated
3 November 2026

Should maintenance staff do it?

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.

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 usually costs more in the end than doing them right.

When it isn’t the sealant

A few problems need another trade or a different fix, and we say so rather than covering them up:

  • Substrate edges that need repairing first
  • Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
  • Frames that are rotten, warped or broken

If in doubt, call the office on 01277 525 020 or email us and we will say what we think before you book.

Where we work in New Forest

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

How a job runs

In a busy building, we agree a sequence with your contact so the disruption stays in one area at once. Each area is protected, prepared and sealed, then handed back before the next one starts. Smaller jobs around New Forest can be grouped with others nearby. A fixed quote is given before anything starts.

  1. A building-by-building inspection lists the failed joints.
  2. The quote is fixed and split as suits you.
  3. We agree the programme and dates with you.
  4. Old mastic is removed and the joint faces prepared.
  5. Joints are resealed and tooled.
  6. Each building is checked and signed off with the 12-month guarantee.

Before we start on site

  • Point out any areas we must not close
  • Share the asbestos register for older buildings
  • Send any specification or drawings in advance

Ask for a quote

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, call the office on 01277 525 020 or email drawings and photos.

Get a price

Advice

Work for main contractors and building owners

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. New Forest can form part of a wider programme across Hampshire.

Whether you’re a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.

New Forest: questions and answers

Can you quote for mastic across several buildings in and around New Forest?

Yes. Planned programmes across a building, block or estate are a core part of this service. Send the addresses and photos and we will give a fixed quote.

What documents will you need to give us for a job in New Forest?

We’ll confirm the paperwork you need, such as RAMS, our insurance certificate and CSCS details, with the quote. We hold £5m public liability insurance, are CHAS accredited and a Constructionline member, and our applicators are CSCS-carded.

Do you work for managing agents and housing associations?

Yes, that’s exactly who this service is for. Buildings are scheduled in turn with dates agreed in advance.

Are you fully insured?

Yes. Mastic Doctor is fully insured, public liability included.

Will residents or tenants be disturbed?

We plan around people living or working in the building. Dates and areas are agreed with you so residents or tenants can be told, and entrances stay in use.

Which sealant will you use?

The specification comes first, if there is one. Without one, the joint decides: its movement, its surfaces and what it has to cope with.

Will you just go over the old sealant?

No. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.

Why deal with it now?

Dealing with failed joints one report at a time is slow and scattered. A planned programme treats each building once and is simpler to manage and budget. Converted and older buildings near places like New Forest tend to move, and aged sealant cracks. The right product, sized to the joint, copes much better.

There’s no price list, because the scope varies so much from one building to the next. For a fixed figure, call for a quote.

Why clients in New Forest choose us

  • A Constructionline member, so easy to vet
  • Our applicators hold CSCS cards
  • One number for every site we cover
  • 12-month guarantee on workmanship

Take a look at how commercial sealant jobs are priced and how we’re accredited.

Blocks and managed buildings in New Forest

New Forest is in the South East, one of the UK’s drier regions. Outside mastic still needs a dry joint and the right temperature, and elevations facing the sun and the prevailing weather are typically where frame mastic ages first.

Owners near New Forest can renew frame and external mastic block by block on one programme. Older community buildings, Church of All Saints among them, often have frames of mixed ages whose mastic varies.

New Forest is in Hampshire. If you’re looking for mastic sealing in New Forest, we can help. Our Hampshire coverage takes in 723 places, large and small. Our Southampton page has more on work in that area, about 23 miles away.

Anyone looking for mastic sealing in SP6 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Among the streets we cover are Sillens Lane and Townsend Lane, and sites on any of them can send details for a fixed quote. Close to New Forest, our area also takes in Martin (1 mile north-east), Rockbourne (3 miles east) and Damerham (3 miles south-east). Nearby towns on our patch include Ringwood (11 miles south-east), Fordingbridge (6 miles south-east), St Leonards (11 miles south), Alderholt (6 miles south-east), Poulner (11 miles south-east) and Ashley Heath (10 miles south).

Local landmarks in New Forest

Nearby you will also find Cranborne Castle Hill (4.4 miles south). For a walk, there’s Western Downs.

Map of New Forest © OpenStreetMap contributors
Accreditations

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