Mastic Sealing in Selborne
Planning work on a mastic joint in Selborne? We look at it, seal it with the right product and hand it over with a 12-month guarantee.
- Repeated reactive repairs to the same buildings
- Occupiers reporting cold air round windows
- Water getting in round frames after rain
Mastic sealing in Selborne
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Mastic sealing in Selborne, done properly
On a residential block, the work happens around people’s lives. The sequence, the areas and the dates are settled with you, giving you what you need to notify residents. Communal entrances and stairs stay usable while we work. We work on balcony and threshold joints, shopfronts below residential blocks and communal kitchens and washrooms, and what we are called in for most is open joints in brickwork or panels and old repairs sealed over failed mastic. A single leaking joint is often how a building in Selborne first comes to us: we check the joints around it and give you an honest view of what needs doing now and what can wait.
For owners with a single building near Selborne, we plan to finish in one visit where possible. Send photos of the frames and joints and we’ll give a fixed quote.
We stand behind the joints we seal with a 12-month guarantee. That covers our preparation and application, and if something we did falls short, we return to it.
- Location
- Selborne (GU34)
- Region
- Hampshire
- Cover
- 12 months on our workmanship
- Quotes
- Quoted before any work starts
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
Your questions answered
Do you work for managing agents with blocks near Alton station?
Yes, we work for agents, landlords and housing associations with blocks of every size. Photos of each elevation help us quote accurately.
Will you take on work at estates like Southlands Industrial Park, close to Selborne?
Yes. Our area takes in Selborne and its surroundings, with estates and business parks such as Southlands Industrial Park included. A few photographs and the unit address let us price the work.
When is resealing likely to be due?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.
Will residents or tenants be disturbed?
Occupiers stay in the building throughout. If any flats or units need access, we will tell you in advance so it can be arranged.
Do you work for managing agents and housing associations?
Yes, block and estate work is a core part of what we do. Buildings are scheduled in turn so you can plan around it.
How long does a typical visit take?
It depends on the scope, but the work usually takes anything from a day to a few weeks, depending on the number of buildings and joints. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.
Can weather delay the job?
It can, when the joints are outside. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so external work may be moved if conditions aren’t right. Internal work is far less affected.
Diagnose, treat, sign off
Before any cutting starts, the area is protected: masking tape along the joint edges and sheeting over anything nearby. On site, the work normally takes a day or two for a single block, longer for an estate programme, and we clear our waste as we work. If others near Selborne need work, visits can be combined, which keeps travel down. You will have a fixed quote before work starts.
- We inspect the joints, building by building, and record what has failed and why.
- You get a fixed quote, priced per building where that helps your budgeting.
- The programme is fixed with you, including dates you can pass on to residents or tenants.
- We remove the old mastic completely and clean the joint faces back.
- Backing rod and primer go in where the joint and the product need them, then new sealant is applied and tooled.
- Each building is checked on completion and the work carries our 12-month guarantee.
Getting the site ready
- Arrange parking or a loading space
- Share your working hours and any access restrictions
- Warn occupants and staff about the work
Request a quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price the work to it. For smaller jobs, photos and a description will do.
Read more
Cost factors for mastic joints
Quotes vary with the job. It mainly depends on:
- Access and working height
- Removal of failed or old sealant
- Which sealant the job calls for
- Quantities, in metres or numbers
The price depends on how many linear metres there are, how much old material needs removing and how the joints are reached. Call for a fixed quote when you are ready.
Before you send an enquiry
To price the job accurately, we need a clear picture of the site. Useful things to include:
- The asbestos register, for older buildings
- Anything awkward about access or site hours
- Photos of the joints, close up and from further back
- The product your specification calls for
To get a fixed quote, call the office on 01277 525 020 or email the details over with the site address and an outline of the work. Our quote form is another easy route.
Mastic sealing around Selborne: points for this area
Selborne is in the South East, one of the UK’s drier regions. Outside work still depends on dry joints, and the sunniest, most exposed sides of a building normally need attention first. Selborne is about 46 miles from central London. Managed blocks of flats are a big part of commuter-belt property.
If you own or manage units on a site such as Southlands Industrial Park, 1.9 miles east of Selborne, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit. If you are responsible for a building such as Church of St Mary, frame and door mastic needs the same attention as any other property. For a school such as Selborne Church of England Primary School, perimeter mastic on windows and doors is a holiday job.
Selborne is about 4 miles south of Alton, in Hampshire. We cover Selborne, with the same fixed quotes and 12-month guarantee as everywhere else. Across Hampshire, 723 places are covered, including Selborne. Portsmouth is covered too, around 21 miles from Selborne.
Postcode districts covered here: GU34 for mastic joints. Streets here include Huckers Lane, Ganders Close and Selborne Road. Sites close to Selborne are covered too, including Newton Valence (1 mile west), Empshott (2 miles south-east), Lower Green (3 miles south), Hawkley (3 miles south) and Oakshott (4 miles south). A short drive away, we cover Basingstoke (13 miles north-west), Fleet (13 miles north), Horndean (14 miles south), Aldershot (13 miles north-east), Alton (4 miles north) and Waterlooville (15 miles south).
Near you in Selborne
In Selborne, that means premises near The Jubilee Tap, among other places. The nearest railway station is Alton station, about 3.8 miles north. A little further out are The Romany Museum (less than half a mile south-east) and Alton Community Hospital (3.5 miles north-west). Open spaces near Selborne include Selborne Hill and Deadwater Valley.
What we can’t put right
Honesty saves time and money. New sealant won’t cure:
- Water coming in from the roof or rainwater goods
- Frames that are rotten, warped or broken
- Misted or failed double-glazed units
If you’re not sure, just ring 01277 525 020 or send details through our quote form and we’ll give you a straight answer.
Where we work in Selborne
- Balcony and threshold joints
- Communal entrances and stairwells
- Shopfronts below residential blocks
- External wall and movement joints
- Window and door perimeters on blocks
- Communal kitchens and washrooms
Different surfaces, different methods
External movement joints
Movement joints are cleaned out, backed with rod and resealed with a sealant of the right movement class.
Planned maintenance
How long mastic lasts depends on exposure, movement and the product used. Regular inspection is the best way to plan resealing.
Site staff or a sealant specialist?
A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.
Why deal with it now?
Resealing ahead of leaks keeps it to a maintenance task. After water has got in, there may be damp, damaged plaster or decoration to put right too, and the complaints come with it. Older rural buildings around Selborne move with the seasons, and rigid or tired sealant can’t keep up. The right product, sized to the joint, copes much better.
Pricing mastic joints depends on how many there are, their condition and the access. Ask us for a fixed quote.
Why clients in Selborne choose us
- CSCS-carded applicators
- Coloured sealants to suit the setting, where available
- Health and safety: CHAS accredited
- Constructionline member
Take a look at how commercial sealant jobs are priced or our accreditations and insurance.