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

Mastic sealant contractors in Old Basing

Sealant work in Old Basing for main contractors, managing agents and facilities managers: mastic sealing for building owners, managing agents and housing associations, quoted at a fixed price.

  • Movement joints with sealant missing
  • No planned programme for sealant
  • Mastic failing across several blocks on an estate
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS accredited
£5m PL insurance

Need mastic sealing in Old Basing?

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

How a job runs

Before any cutting starts, the area is protected: masking tape along the joint edges and sheeting over anything nearby. On site, the work usually takes one or more days per building, depending on the joint lengths and the access, and we clear our waste as we work. If neighbouring businesses or buildings around Old Basing need work too, visits can be combined. Tell us your site hours and we will plan around them.

  1. We inspect each building and record the joints that have failed.
  2. The quote is fixed and split as suits you.
  3. We agree the programme and dates with you.
  4. Failed sealant is removed and the faces prepared.
  5. Joints are resealed and tooled.
  6. Each building is checked and signed off with the 12-month guarantee.

Getting the site ready

  • Tell us what induction or permit system the site runs
  • Agree which areas must stay open
  • Move anything stored against the joints

Quotes

For a fixed quote, call the office on 01277 525 020 or send details through our quote form. You can also send details through our quote form.

Ask for a quote

Related advice

Mastic sealing for commercial buildings in Old Basing

Older blocks and commercial buildings can have mastic that contains asbestos. Before we disturb it, we ask to see the asbestos register or survey and if it’s suspected, work stops until it’s tested. Removing asbestos-containing material isn’t something we do. If you have failed external movement joints and the same joint failures repeated across a portfolio, we can put it right. Searching for sealant specialists in Old Basing? Mastic Doctor has worked for contractors, FMs and building owners since 2005, CHAS accredited and a Constructionline member.

For landlords and associations with stock in and around Old Basing, grouping buildings into one visit saves travel. Send the addresses and photos and we will quote for all of them together.

We stand behind the joints we seal: 12 months, guaranteed. It covers how we prepared and applied the sealant, and if something we did falls short, we return to it.

The Mastic Doctor team standing beside their branded vans outside an office building
Place
Old Basing (RG24)
Wider area
Hampshire
Cover
12 months on every job
Quotes
A fixed quote before we start
Telephone
01277 525 020
Last updated
3 November 2026

What we are called out for in Old Basing

Many failed joints were sealed without backing rod so the mastic is bonded on three sides. That three-sided adhesion stops it stretching and splits as the building moves.

What tends to prompt an enquiry:

  • Water getting in round frames after rain
  • Patchy repairs in mismatched sealant
  • Worn sealant at communal door frames
  • Failed external movement joints

If your remit includes a building such as Old Basing Infant School, frame and door mastic can be programmed for the holidays.

What to look for in a quote

  • The terms of the workmanship guarantee
  • Their plan for phasing and protecting the area
  • Is the sealant right for the movement and the substrate?
  • What level of public liability insurance do they hold?

How to choose a sealant contractor

Honest limits

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

  • Glazing that needs replacing
  • Frames that are rotten, warped or broken
  • Masonry that has broken away beside the joint

If in doubt, give us a call on 01277 525 020 or email the details over and we’ll say what we think before you book.

Surfaces we seal

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

Common questions from Old Basing clients

Can you work at a site such as Hatch Industrial Park, by Old Basing?

Yes. Our area takes in Old Basing and its surroundings, with estates and business parks such as Hatch Industrial Park included. Photos and a short description are enough for a first look.

Is Old Basing too far out for you?

Not at all. Old Basing is within our area. We work across Greater London and the South East. Good photos up front let us bring everything on the first visit.

Can weather delay the job?

It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.

How long does a typical visit take?

That varies with the scale of the job, but the work normally takes a few days for most blocks, with larger programmes scheduled building by building. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.

Can you seal joints high up on a block?

We talk through access for each building when we quote. Tell us the building height and any access already in place and we will confirm the approach in the quote.

Who decides which product is used?

If the job is specified, we follow the specification. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.

What’s the quickest route to a quote?

It works in four steps: send details, get a quote, we seal, guaranteed. The first step only needs photos and a postcode.

After the work

To get the most from the new sealant:

  • Prioritise elevations facing the weather
  • Make it easy for occupiers to report draughts
  • Check the asbestos register before any old mastic is disturbed
  • Track which buildings were done and when

Include sealant in planned building inspections. Watch for splits, open gaps, hard or chalky surfaces and mastic pulling away and record where they are.

Failed mastic often goes unnoticed until heavy rain finds it. Resealing when cracking first shows avoids water damage and the complaints that come with it.

Frames, entrances and external joints in Old Basing

Old Basing is about 44 miles from central London. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres, and window and balcony mastic on them tends to age at the same rate. The South East is one of the drier parts of the UK. Even so, frame mastic only goes on in dry, workable conditions, and elevations facing the sun and the prevailing weather are typically where frame mastic ages first.

Property owners at sites such as Hatch Industrial Park, 0.7 miles south-east of Old Basing, can have mastic renewed between lettings. Blocks of flats and mixed-use buildings often cluster around stations such as Basingstoke station, 2 miles west of Old Basing, and their window and balcony mastic tends to age at the same rate across a building.

Old Basing is about 3 miles east of Basingstoke, in Hampshire. Old Basing sits inside our coverage and the rest of Hampshire, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. 723 places across Hampshire fall within our area, Old Basing among them. Our Reading page has more on work in that area.

We take on mastic joints across the RG24 postcode area, for business premises of every kind. Among the streets we cover are The Street, London Road and Paulet Place. Sites close to Old Basing are covered too, including Lychpit (1 mile west), Mapledurwell (1 mile east), Andwell (1 mile east), Water End (2 miles east) and Chineham (2 miles north). Further afield, our area takes in Basingstoke (3 miles west), Farnborough (12 miles east), Fleet (9 miles east), Aldershot (12 miles east), Alton (9 miles south) and Yateley (10 miles north-east).

Local landmarks in Old Basing

Recent enquiries here include premises near The Costello School, Eastrop Park and The Crown Public House. The closest station to Old Basing is Basingstoke station, about 2 miles west. Well-known places in the area include Festival Place (1.9 miles west) and Basing House (less than half a mile west). Not far away are Farleigh Hill and The Mill Field.

Map of Old Basing © OpenStreetMap contributors

Why act early in Old Basing

Adding sealant to cyclical maintenance is an easy win. Waiting until leaks appear means working under pressure and less choice about when. For buildings in places like Old Basing, one well-planned visit beats several small ones, so it’s worth dealing with every failing joint at once.

What a job costs comes down to how many linear metres there are, what has to come out first and the access. Call for a fixed quote once you have the details.

Why clients in Old Basing choose us

  • Fully insured
  • Clear, fixed quotes
  • One number for every site we cover
  • Colour options checked against the specified product

Take a look at how commercial sealant jobs are priced and our accreditations.

Owners, agents and contractors

As a CHAS accredited contractor and Constructionline member, we are straightforward to vet for your supplier list. We’re fully insured, and our insurance certificate can go with the quote.

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.

Accreditations

Trusted. Accredited. Insured.