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

Mastic sealing for building owners and managing agents in South Ham, Hampshire

We carry out mastic sealing for building owners, managing agents and housing associations in South Ham and the surrounding area. Send details for a fixed quote.

  • Brittle perimeter mastic across a building
  • No planned programme for sealant
  • Patchy repairs in mismatched sealant
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
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
Constructionline member
£5m PL insurance

Mastic sealing for businesses in South Ham

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

Mastic sealing for commercial buildings in South Ham

Older blocks and commercial buildings can have mastic that contains asbestos. We check the asbestos register or survey before any old sealant is cut out, and work stops for testing if there’s any doubt. We don’t remove asbestos-containing materials. If you’re dealing with patchy repairs in mismatched sealant and damaged joints in communal entrances and corridors, we can help, on communal kitchens and washrooms, communal entrances and stairwells and balcony and threshold joints alike. Whether you call it commercial sealant work, mastic application or joint sealing, the work in South Ham is the same: the right product in a properly prepared joint.

Older buildings and conversions around places like South Ham mix old masonry with newer frames. Perimeter joints need a sealant that suits both frame and masonry.

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.

Place
South Ham (RG22, RG21, RG23)
Region
Hampshire
Cover
A 12-month guarantee
Quote
A fixed quote before we start
Telephone
01277 525 020
Updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

General trades versus a specialist

Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.

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 easy to get wrong without experience.

Honest limits

Honesty saves time and money. New sealant won’t cure:

  • Broken glass or failed sealed units
  • Leaks from above rather than through a joint
  • Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first

If you are not sure, just ring 01277 525 020 or email drawings and photos and we will give you a straight answer before you book.

What we seal

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

Work for main contractors and building owners

For main contractors, we work as the sealant subcontractor. We work to your programme, your specification and your site rules, with CSCS-carded applicators on site.

If you look after buildings for someone else, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.

FAQs: South Ham

Can you work in a care home near South Ham with residents in?

Yes. We agree rooms and times with the manager and work a few areas at a time. We follow the home’s own procedures throughout.

Is South Ham off your patch?

No. Places such as South Ham are covered as much as the big towns. 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.

Do you need to see the site first?

Photos, drawings or a schedule are often enough to quote. Where they aren’t, we arrange a site visit.

Can you take on resealing for a block portfolio?

Yes, block and estate work is a core part of what we do. We work through buildings in a planned order with dates agreed in advance.

Do you supply RAMS and insurance details?

Our credentials include CHAS, Constructionline and public liability insurance. For specific documents, tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote.

Is it fine to apply new sealant on top of old?

No, never. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.

Will you quote for a small job?

Small jobs are welcome alongside larger packages. Photos and a description are enough to start.

How a job runs

Tell us your site hours and access windows and we will plan around them. While we’re working, the area stays contained and tidy, and we check in with your contact before moving on to each new area. Work in places the size of South Ham is planned as a single visit where we can. Clear photographs and measurements help us bring the right products.

  1. A building-by-building inspection lists the failed joints.
  2. You get a fixed quote, per block or for the whole programme.
  3. We agree the programme and dates with you.
  4. Failed sealant is removed and the faces prepared.
  5. New sealant goes in with backing rod and primer where needed.
  6. We check the finished work and confirm the guarantee.

What we need from you

  • Agree which areas must stay open
  • Tell staff and tenants when we will be in
  • Send any specification or drawings in advance

Request a quote

If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. Smaller jobs need nothing more than photos and a few notes.

Ask for a quote

Related advice

Aftercare for building managers

Regular inspection catches problems early. In particular:

  • Log resealing dates block by block
  • Group repairs into a planned programme
  • Keep bins and bikes away from communal door frames
  • Look at the sunniest and most exposed elevations first

Log the date and extent of the resealing for each block. It helps plan the next round and gives you a history.

Water getting in round frames can damage plaster, decoration and the frames themselves. Early resealing is far simpler than repairs inside.

Frames, entrances and external joints in South Ham

South Ham sits in one of the drier corners of the country, the South East. Outside mastic still needs a dry joint and the right temperature, and elevations facing the sun and the prevailing weather are usually where frame mastic ages first. South Ham is about 47 miles from central London. Managed blocks of flats are a big part of commuter-belt property.

For owners of several units at places like West Ham Industrial Estate, which lies north of South Ham, one programme can deal with frame and external mastic across the lot. Trustees of buildings like Saint Peter's Church can bring frame and external mastic into a planned maintenance list.

South Ham is about 1 mile south-west of Basingstoke, in Hampshire. Businesses, contractors and managing agents in South Ham can call on us for mastic joints, as part of our coverage of Hampshire. South Ham is one of 723 places in Hampshire on our list for mastic joints. Reading is covered too, some 14 miles away.

Business premises anywhere in RG22, RG21 and RG23 are within our area for mastic joints. For a building on Pheby Road, Wella Road and Lennox Road or nearby, send details and we will quote for mastic joints. Close to South Ham, our area also takes in Brighton Hill (1 mile south), Basingstoke (1 mile north-east), Winklebury (1 mile north-west), Buckskin (1 mile west) and Worting (1 mile west). Nearby towns on our patch include Farnborough (15 miles east), Fleet (12 miles east), Aldershot (15 miles east), Alton (10 miles south-east), Yateley (13 miles north-east) and Tadley (7 miles north).

Local landmarks in South Ham

In South Ham, that means premises near Aldworth School, Coppice Spring School and Eastrop Park. The nearest railway station is Basingstoke station, roughly 1.2 miles north-east. Other landmarks nearby include Basingstoke and North Hampshire Hospital (1.5 miles north) and Basing House (2.7 miles east). Open spaces near South Ham include Farleigh Hill and Daneshill Park Woods.

Map of South Ham © OpenStreetMap contributors

When to call us in South Ham

In communal areas, joints take knocks from bins, bikes, buggies and deliveries, and low-level joints get damaged. Regular cleaning wears them further.

Any of the following is a good reason to get the joints checked over:

  • A mix of products and colours from past repairs
  • Leaks at window and door perimeters
  • Draught complaints from residents or tenants
  • Repeated reactive repairs to the same buildings

If you look after a block within reach of Basingstoke station, which lies north-east of South Ham, frame and balcony mastic can be renewed on one programme.

Comparing quotes

  • Their pre-qualification and accreditations
  • Will CSCS-carded applicators be on site?
  • How long is the guarantee, and what does it include?
  • How they handle RAMS and site documents

How to choose a sealant contractor

Accreditations

Trusted. Accredited. Insured.