Mastic sealing for building owners and managing agents in St Mary's, Southampton
Work needed on a mastic joint in St Mary's? We look at it, seal it with the right product and hand it over with a 12-month guarantee.
- Estate-wide sealant that is simply worn out
- Leaks at window and door perimeters
- Open joints in brickwork or panels
Mastic sealing near St Mary's
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 St Mary's
Mastic Doctor has sealed joints on commercial and residential blocks since 2005. Our applicators are CSCS-carded, and the work is backed by public liability insurance. Each building we complete carries a 12-month guarantee on our workmanship. Site teams most often ask us about movement joints with sealant missing and the same joint failures repeated across a portfolio, across shopfronts below residential blocks, communal entrances and stairwells and external wall and movement joints. Looking for mastic applicators who cover St Mary's? We’ve been sealing commercial buildings since 2005, with CSCS-carded applicators.
For landlords and associations with stock in and around St Mary's, grouping buildings into one visit saves travel. One quote can cover a whole list of addresses.
A 12-month guarantee applies to all our work. Should something we installed fail, phone 01277 525 020 or email drawings and photos and we’ll come back to it.
- Location
- St Mary's (SO14, SO15, SO18)
- Wider area
- Southampton
- Guarantee
- 12 months on every job
- Price
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
Keeping the joints sound
For the best life from the joints:
- Mention RAMS, insurance or CSCS requirements up front
- Keep bins and bikes away from communal door frames
- Share the asbestos register when you send details
- Track which buildings were done and when
Our workmanship is covered for 12 months, so report any failure in that time. After that, regular inspection keeps the programme on track.
Leaks at window perimeters spoil finishes and can affect frames. Resealing early keeps the job small.
Owners, agents and contractors
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, with each stage agreed with your site contact.
We work for building owners and managing agents on sealant work across single buildings or whole portfolios around St Mary's. One quote can cover more than one site, which keeps the paperwork simple.
From enquiry to sign-off
In a busy building, the work is phased so only one area is out of use at a time. Each area is protected, prepared and sealed, then reopened once the sealant allows before we move to the next. If neighbouring businesses or buildings around St Mary's need work too, visits can be combined. Tell us your site hours and we’ll plan around them.
- A building-by-building inspection lists the failed joints.
- You get a fixed quote, per block or for the whole programme.
- We agree the programme and dates with you.
- Old mastic is removed and the joint faces prepared.
- Joints are resealed and tooled.
- We check the finished work and confirm the guarantee.
What we need from you
- Share the asbestos register for older buildings
- Have the specification and drawings to hand
- Make sure the joints can be reached
Request a quote
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, give us a call on 01277 525 020 or email drawings and photos.
Read more
Should maintenance staff do it?
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class.
Questions we’re asked in St Mary's
Is St Mary's too small for you to travel to?
No. Places such as St Mary's are covered as much as the big towns. We cover Greater London and the counties of the South East. 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 Central Trading Estate, near St Mary's?
Yes. We cover St Mary's and the area around it, including industrial estates, business parks and retail parks such as Central Trading Estate. Send details of the unit and the work through our quote form for a quick quote.
Do you need to see the site first?
Many jobs can be quoted from photos, drawings or a joint schedule. If the job needs a look first, we will arrange a visit before quoting.
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.
Is it fine to apply new sealant on top of old?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.
How do we ask for a quote?
You can use the quote form on this site; alternatively, call the office on 01277 525 020 or send photos by email. Include photographs or drawings if you have them.
What do you charge?
It depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a fixed quote and we will price it properly.
Common problems we fix in St Mary's
Communal entrances and corridors see a lot of wear, and low-level joints get damaged. Regular cleaning wears them further.
It’s worth sending us details if you spot any of the following:
- No planned programme for sealant
- Damp patches beside frames
- A mix of products and colours from past repairs
- Brittle perimeter mastic across a building
For agents with blocks near Southampton Central station (0.8 miles west of St Mary's), a block-wide mastic programme deals with frames, balconies and entrances in one go.
Before you book anyone
- Which product they’ll use, and why it suits the joint
- Whether old or failed sealant will be cut out, not overlaid
- Their public liability cover
- Can the work be phased to keep areas open?
Towns and villages near St Mary's
Also in St Mary's
What sets the cost
There’s no standard rate for sealant work, because every site is different. What we look at:
- How accessible the joints are
- Quantities, in metres or numbers
- Phasing around occupants
- The product specified
There’s no price list, because the scope varies so much from one building to the next. Call for a quote and we will price your job on its own details.
What to include in your enquiry
There’s no need for a formal survey. These details are enough to start:
- Clear photographs of the problem areas
- The site address and postcode
- Asbestos survey details if the building is older
- Any dates the work must fit around
We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To start the process, phone 01277 525 020 or email a schedule or drawings.
For owners and agents in St Mary's
St Mary's is within about 1 mile of the coast. Sea-facing elevations take driven rain and salt, and their mastic shows it before the sheltered sides do, so it’s worth inspecting those sides more often. St Mary's has three care or nursing homes no more than 2 miles away. Owners of care premises can bring window and door mastic into a phased programme planned around the home.
Student blocks close to universities like Southampton Solent University (less than half a mile north-west of St Mary's) are easiest to work on between tenancies. Older community buildings, St Mary's Church among them, often have frames of mixed ages whose mastic varies.
St Mary's is about 1 mile south of Southampton, in Southampton. Looking for mastic sealing in St Mary's? We can help. 30 places across Southampton fall within our area, including St Mary's.
Work on mastic joints is covered throughout SO14, SO15 and SO18. For a building on New Road, Ogle Road and Marsh Lane or nearby, we can quote for mastic joints. Sites close to St Mary's are covered too, including Northam (1 mile north-east), Inner Avenue (1 mile north), Peartree Green (1 mile east), Southampton (1 mile north) and Bitterne Manor (1 mile north-east). Further afield, our area takes in Harefield (3 miles east), Maybush (3 miles north-west), Coxford (3 miles north-west), Lordswood (3 miles north-west), Mansbridge (3 miles north-east) and Redbridge (3 miles west).
Around St Mary's
In St Mary's, that means premises near The Joiners pub, Woolston School and Houndwell Park and the streets around them. The nearest railway station is Southampton Central station, about 0.8 miles west. Nearby you’ll also find Netley Castle (2.5 miles south-east) and Bargate Guildhall Museum (under half a mile south-west). Not far away are Netley Common.