Andover Down mastic sealing
Mastic sealing for building owners, managing agents and housing associations in Andover Down and across Hampshire. CHAS accredited and fully insured, with a 12-month guarantee.
- A mix of products and colours from past repairs
- Draughts at frames across a block
- Worn sealant at communal door frames
Mastic sealing in Andover Down
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Owners, agents and contractors
When you manage a building on behalf of an owner, 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.
For main contractors, we work as the sealant subcontractor. Programme, specification and site rules come first, with CSCS-carded applicators on site.
About our mastic sealing in Andover Down
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. Site teams most often ask us about repeated reactive repairs to the same buildings and old repairs sealed over failed mastic, on shopfronts below residential blocks, external wall and movement joints and balcony and threshold joints. One point of contact handles commercial sealant work in Andover Down from the first photos to the final walk-round, for single jobs and planned programmes alike.
For owners with a single building near Andover Down, we plan to finish in one visit where possible. Photos of each elevation help us quote accurately.
What our 12-month guarantee covers is the way we did the job: preparation, application and finish. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.
- Where
- Andover Down (SP11)
- Wider area
- Hampshire
- Guarantee
- 12 months on every job
- Price
- A fixed quote before we start
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Common questions from Andover Down clients
Is a smaller place like Andover Down outside your area?
Not at all: smaller places are covered as well as towns. London and every South East county are within our area. Where we can, we group nearby jobs to make the most of each trip.
Is Walworth Business Park, near Andover Down, within your area?
Yes. Estates, retail parks and business parks around Andover Down, Walworth Business Park among them, are all within reach. Send details of the unit and the work through our quote form for a quick quote.
Is it fine to apply new sealant on top of old?
No. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.
Is asbestos a concern with old mastic?
We don’t remove asbestos-containing materials. Anything suspect is tested before we carry on in line with the dutyholder’s asbestos management.
Can you follow the specification on our project?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.
Do you do block-wide mastic programmes?
Yes, planned programmes suit estates and portfolios. You get a fixed quote per building or for the whole job.
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.
For owners and agents in Andover Down
Andover Down lies roughly 61 miles out from central London. Managed blocks of flats are a big part of commuter-belt property, and window and balcony mastic on them tends to age at the same rate. Andover Down sits in one of the drier corners of the country, the South East. Even so, frame mastic only goes on in dry, workable conditions, and elevations facing the sun and the prevailing weather are usually where frame mastic ages first.
For agents with blocks near Andover station, which lies west of Andover Down, a block-wide mastic programme deals with frames, balconies and entrances in one go. Schools and community buildings such as Pilgrims' Cross CofE Aided Primary School need frame and external mastic kept sound like any building. If you own or manage units on a site such as Walworth Business Park (0.9 miles west of Andover Down), failed mastic on frames, door surrounds and external joints can be dealt with unit by unit.
Andover Down is about 2 miles east of Andover, in Hampshire. Commercial clients in Andover Down use us for work on mastic joints, as part of our coverage of Hampshire. Andover Down is one of 723 places we cover in Hampshire for mastic joints. Southampton is covered too, around 20 miles from Andover Down.
Commercial sites across SP11 are covered. If your site is on London Road and The Middleway or close by, we can quote for mastic joints. Close to Andover Down, our area also takes in Picket Piece (1 mile north), Finkley Down (1 mile north-west), Picket Twenty (1 mile south-west), Finkley (1 mile north-west) and East Anton (2 miles north-west). Nearby towns on our patch include Basingstoke (15 miles east), Winchester (12 miles south-east), Romsey (15 miles south), Hyde (11 miles south-east), Tidworth (10 miles west) and Weeke (11 miles south-east).
Local landmarks in Andover Down
Locally, jobs take us to sites close to Winton Community Academy and Winton Community Academy, among other places. Andover Down’s nearest station is Andover station, about 2.6 miles west. A little further out are Andover War Memorial Hospital (2.6 miles west) and Finkley Down Farm Museum (1 mile north-west). Not far away are Mill Lake and Anton Lakes.
What happens if it’s left?
Sealing over failed mastic looks tidy for a while. It won’t grip the old sealant and soon comes away. Cutting out and resealing properly does it once. Halls, stores and units around places like Andover Down may not be checked every day, so a failed joint can leak for a while before anyone sees it. Renewing joints in good time avoids the problem.
The price depends on how many linear metres there are, what has to come out first and the access. Call for a quote when you are ready.
Why choose Mastic Doctor in Andover Down
- Health and safety: CHAS accredited
- Sealing commercial buildings since 2005
- Colour options checked against the specified product
- Coloured sealants to suit the setting, where available
Read what affects the cost and our accreditations and insurance.
Towns and villages near Andover Down
Other services in Andover Down
How a job runs
A typical day starts with protection: tape along each joint edge and covers over finishes, stock and equipment close by. 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. Rural sites near Andover Down may need directions, gate codes or a contact on site. Add it to your enquiry and we will build it into the plan.
- We inspect each building and record the joints that have failed.
- 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.
- Each building is checked and signed off with the 12-month guarantee.
Getting the site ready
- Send any specification or drawings in advance
- Share your working hours and any access restrictions
- Point out parking and an unloading spot
Get a fixed quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to call the office on 01277 525 020 or email a schedule or drawings with what you know.
Related advice
When something else is needed
Part of a good diagnosis is knowing where sealant stops. You will hear from us if the cause turns out to be one of these:
- Frames that are rotten, warped or broken
- Substrate edges that need repairing first
- Roof leaks, gutters or failed flashings that aren’t sealant joints
If you are not sure, just phone 01277 525 020 or send photos by email and we’ll give you a straight answer.
Joints and surfaces we work on
- Balcony and threshold joints
- External wall and movement joints
- Communal entrances and stairwells
- Window and door perimeters on blocks
- Communal kitchens and washrooms
- Shopfronts below residential blocks
Keeping the joints sound
Problems stay small when the joints are checked regularly. In particular:
- List the paperwork your organisation requires when you send details
- Check sealant joints during planned building inspections
- Protect low-level joints in entrances
- Avoid piecemeal callouts where you can
Log the date and extent of the resealing for each block. That makes future programmes easier to plan and shows what was done.
Water getting in round frames can damage plaster, decoration and the frames themselves. Early resealing is far simpler than repairs inside.
Surface by surface
External movement joints
The joint width has to suit the movement and the sealant’s capability with the width-to-depth ratio set as the manufacturer advises.
Commercial and mixed-use buildings
Where retail and residential share a building, so phasing has to suit both. Tell us your site hours and access windows and we’ll plan around them.