Andover mastic sealing
Looking for mastic sealing in Andover? It’s simple: send details, get a quote, we seal, guaranteed.
- Brittle perimeter mastic across a building
- Complaints coming in block by block
- Estate-wide sealant that is simply worn out
Mastic sealing across Andover
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Your questions answered
Will you take on a block within reach of Andover station?
Yes, and several blocks can go on one quote. Photos of each elevation help us quote accurately.
Is Northern Avenue Retail Park, near Andover, within your area?
Yes. Our area takes in Andover and its surroundings, with estates and business parks such as Northern Avenue Retail Park included. A few photos and the unit address let us price the work.
When is resealing likely to be due?
Nobody can honestly give a figure in years, since movement, weather, cleaning and use all affect it. Regular checks let you plan resealing before leaks or damage.
How long before the joints can be used?
The product and site conditions decide that. Some take light use quickly, others need longer to cure, and we confirm it before leaving site.
How long does a job like this take?
We plan the time on site around your programme and access. You will have an expected duration with the quote.
Does the weather affect the work?
It can, for external work. 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.
Do you seal on top of existing sealant?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, since fresh sealant will not bond reliably to aged material.
Mastic sealing in Andover, done properly
Across Andover and the rest of Hampshire, we work the same way: you send details, we return a fixed quote, the joints are resealed and the 12-month guarantee follows. Addresses, photographs of typical joints and a rough idea of quantities let us give a quick quote or we can visit. We work on window and door perimeters on blocks, shopfronts below residential blocks and balcony and threshold joints, and what we’re called in for most is old repairs sealed over failed mastic and damaged joints in communal entrances and corridors. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Andover is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.
For housing associations with stock in a town such as Andover, mastic is easiest to handle as a planned programme. Work can move block by block, with you handling resident notices.
Our 12-month guarantee is about workmanship, not wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we spell out the cover before we begin.
- Location
- Andover (SP10, SP11)
- Wider area
- Hampshire
- Guarantee
- 12 months on every job
- Quotes
- Quoted before any work starts
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Doing it in-house
Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Why act early in Andover
Mixed repairs by different contractors leave a patchwork of products and colours. A block-wide reseal gives one product, one colour and one guarantee. For businesses and landlords in Andover, a tidy, sound joint also matters for appearance. Renewing it keeps the building looking cared for.
The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a quote and we’ll explain how it’s made up.
Why clients in Andover choose us
- Colour agreed before work starts
- Work carried out by CSCS-carded applicators
- Coloured sealants to suit the setting, where available
- Failed material removed, not covered up
Read how commercial sealant jobs are priced and how we’re accredited.
What we can’t put right
Not every problem is a sealant problem, and we’re upfront when that’s the case. These need a different solution:
- Misted or failed double-glazed units
- Water coming in from the roof or rainwater goods
- Cracked or crumbling render, brick or stone at the joint edges (we’ll tell you if so)
If you’re not sure, just speak to us on 01277 525 020 or send photos by email and we will give you a straight answer.
Where we work in Andover
- Window and door perimeters on blocks
- External wall and movement joints
- Communal entrances and stairwells
- Communal kitchens and washrooms
- Balcony and threshold joints
- Shopfronts below residential blocks
How a job runs
Where the site stays busy, the work is phased so only one area is out of use at a time. Each area is protected, prepared and sealed before we move to the next. Parking and loading for town-centre jobs in Andover are worth mentioning when you send details. Industrial and business units typically have yard or car park space.
- We check the asbestos register for older buildings and look at the joints.
- A fixed quote covers the joints, products and order of work.
- Failed mastic is removed completely.
- The joints are prepared and resealed with the right product.
- We finish each building before moving to the next.
What we need from you
- Send your site hours and access windows
- Tell staff and tenants when we will be in
- Point out any areas we must not close
Getting a fixed quote
Need a figure for a tender or a budget? We will quote against your scope and drawings you can plan around. For a chat about it beforehand, give us a call on 01277 525 020 or email drawings and photos.
Related advice
Also near Andover
What else we do in Andover
Keeping the joints sound
Regular inspection catches problems early. Specifically:
- Include mastic in your cyclical inspections
- Encourage occupiers to report problems at frames
- Track which buildings were done and when
- Avoid piecemeal callouts where you can
Keep bins, bikes and deliveries away from low-level joints where you can. Damage at low level is the most common reason communal joints fail early.
Mastic fails gradually, then all at once in a wet spell. Resealing when cracking first shows avoids water damage and the complaints that come with it.
For managing agents and facilities managers
As a CHAS accredited contractor and Constructionline member, we’re straightforward to vet for your supplier list. We’re fully insured, and our insurance certificate can go with the quote.
When you manage a building on behalf of an owner, you need clear quotes and clear reporting. You get a fixed quote, an agreed scope and a walk round at the end.
Looking after buildings in and around Andover
At about 63 miles from central London, Andover is within reach of the capital. Around the capital’s commuter belt, managing agents look after many blocks close to stations and town centres; their frame mastic often ages block-wide. Andover is in the South East, one of the UK’s drier regions. External mastic still waits for dry faces and the right temperature, and south- and west-facing elevations, which take the most sun and rain, often age first.
Landlords with units on estates such as Northern Avenue Retail Park, under half a mile north-east of Andover, can bring frame, door and external mastic across several units into one programme. For agents with blocks near Andover station (0.5 miles west of Andover), a block-wide mastic programme deals with frames, balconies and entrances in one go. Schools and community buildings such as St John the Baptist Catholic Primary School need frame and external mastic kept sound like any building.
Andover is about 17 miles west of Basingstoke, in Hampshire. Across the SP10 postcode area, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. Across Hampshire, 723 places are covered, including Andover. Sites around Southampton have their own page, roughly 21 miles from Andover.
Anyone looking for mastic sealing in SP10 and SP11 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Among the streets we cover are High Street, Goddard Square and London Road. With the A303 and A342 nearby, Andover is straightforward for us to reach. Sites close to Andover are covered too, including Picket Twenty (1 mile east), East Anton (1 mile north-east), Knights Enham (1 mile north), Finkley Down (2 miles north-east) and Picket Piece (2 miles east). Bigger towns within reach include Winchester (13 miles south-east), Romsey (15 miles south), Hyde (12 miles south-east), Tidworth (8 miles west), Weeke (12 miles south-east) and Kempshott (15 miles east). Andover ranks among the main centres of Hampshire, with offices, shops, schools and other public and commercial buildings, and we cover them all.
Near you in Andover
Around Andover, our work takes us to commercial buildings near The Angel Inn, Winton Community Academy and Winton Community Academy, among other places. The closest station to Andover is Andover station, about 0.5 miles west. Other landmarks nearby include Andover War Memorial Hospital (0.7 miles north-west) and Andover Museum (under half a mile east). Not far away are Anton Lakes and Mill Lake.