Construction and new-build mastic in Andover Down, Hampshire
Mastic packages for new-build and refurbishment projects in Andover Down and across Hampshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Missed perimeter joints on a new elevation
- Inconsistent sealant finishes from plot to plot
- A long mastic snag list close to completion
Construction mastic near Andover Down
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
About our construction mastic in Andover Down
Since 2005 we have worked alongside main contractors, developers and fit-out firms. Quantities come off the drawings, the sequence is agreed with the site manager and the work follows the trades. For construction mastic on a scheme in Andover Down, send drawings through our quote form, or phone or email us to talk it through. Most enquiries involve frame gaps too wide for sealant alone and a long mastic snag list close to completion, on brick and block movement joints, cladding and panel joints and floor and skirting junctions. For commercial sealant work in Andover Down, you deal with one contact from quote to sign-off, for single jobs and planned programmes alike.
Around smaller places like Andover Down, building work typically means conversions of farm buildings, a few new houses or an extension to a hall or school. Each still needs a proper mastic package: window perimeters, facade joints and internal sealant to the specification.
Building owners and contractors get the same cover: a 12-month guarantee on our workmanship. It doesn’t extend to damage, faults in the building or work by others, and we are upfront about that.
- Place
- Andover Down (SP11)
- Wider area
- Hampshire
- Cover
- A 12-month guarantee
- Quote
- Quoted before any work starts
- Phone
- 01277 525 020
- Updated
- 3 November 2026
What sealant work can’t fix
We seal joints; we don’t mend everything behind them. On its own, sealant can’t deal with:
- Specifying the product where the designer hasn’t
- Rework caused by others damaging completed areas
- Defective windows, doors or glazing units (the supplier or installer’s job)
If in doubt, ring 01277 525 020 or email the details over and we’ll say what we think.
Joints and surfaces we work on
- Cladding and panel joints
- Brick and block movement joints
- Internal decorators’ caulk
- Floor and skirting junctions
- Sanitary and kitchen joints
- Window and door perimeters
Site staff or a sealant specialist?
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.
A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Looking after the joints
Regular inspection catches problems early. In particular:
- Ask installers to correct oversized gaps first
- Use the product the specification names
- Protect sealed areas from following trades
- Don’t schedule sealing before decorators and flooring are done
Tell the builders’ clean team which areas have new sealant. Scrapers used on frames and worktops can nick or lift a new bead so keep them off the joints.
Snag items left to the last week put handover at risk. A planned close-out through each area as it completes keeps the list short.
When to call us in Andover Down
A new building moves while it dries and settles. Plaster, screeds, timber and blockwork all shrink as they lose moisture. Choosing the right product for each joint reduces that.
Typical triggers for a call:
- Frame gaps too wide for sealant alone
- Early adhesion failures on new external joints
- Internal caulk splitting as the building dries out
- A mastic package split between trades with no clear owner
When a college such as Andover College (2.1 miles west of Andover Down) builds or refurbishes, the mastic package typically has to fit around students and staff.
Comparing quotes
- Who will actually carry out the work
- How long is the guarantee, and what does it include?
- Health and safety accreditation such as CHAS
- Whether primer will be used where the manufacturer specifies it
Common questions from Andover Down clients
Could you schedule work at a campus like Andover College for the vacation?
Yes, holiday working periods are the norm on campus jobs. Let us know which documents your site asks for, and we will confirm them alongside the quote.
Does your area include sites such as Walworth Business Park, near Andover Down?
Yes, sites like Walworth Business Park are within our area, along with the rest of Andover Down. To start, just give us a call on 01277 525 020 or email us with the unit, the joints involved and your access times.
Is Andover Down in your area?
Yes. Andover Down is in our area. To discuss a job, give us a call on 01277 525 020 or email drawings and photos.
Do you guarantee new-build sealant work?
It’s backed by our 12-month guarantee, covering how we sealed. Keeping other trades off finished joints prevents most problems.
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 inspection is the best way to catch problems early.
How do you deal with asbestos in old sealant?
Managing asbestos is the dutyholder’s responsibility, so for older buildings we ask for the asbestos register first. If anything suspect turns up, we stop until it’s tested.
How do you work with the site programme?
The programme sets the job. Tell us the sequence and we will plan applicators around it, sealing as areas become ready.
New build and refits around Andover Down
The South East is one of the drier parts of the UK. Winter mornings still bring frost and condensation on frames and panels, which is why external dates are agreed with the site manager. At about 61 miles from central London, Andover Down is within reach of the capital. Towns within reach of London tend to keep building, from flats to offices and schools, so mastic packages have to keep pace with busy programmes.
Projects at schools like Pilgrims' Cross CofE Aided Primary School work to term dates, so mastic is programmed tightly. New units and refits on sites such as Walworth Business Park, 0.9 miles to the west of Andover Down, need their panel and perimeter joints sealed to the specification.
Andover Down is about 2 miles east of Andover, in Hampshire. We cover Andover Down and the rest of Hampshire, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Andover Down is one of 723 places in Hampshire on our list. For work in that direction, see our Southampton page (20 miles or so).
We take on mastic packages across the SP11 postcode area, for business premises of every kind. Among the streets we cover are London Road and The Middleway, and sites on any of them can send details for a fixed quote. Sites close to Andover Down are covered too, including 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). Further afield, our area takes in 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).
Landmarks near Andover Down
In Andover Down, that means premises near Winton Community Academy and Winton Community Academy, among other places. The closest station to Andover Down is Andover station, roughly 2.6 miles west of the centre. Well-known places in the area include Andover War Memorial Hospital (2.6 miles west) and Finkley Down Farm Museum (1 mile north-west). Open spaces near Andover Down include Mill Lake and Anton Lakes.
Also near Andover Down
Other services in Andover Down
What happens if it’s left?
A cheaper sealant can look like an easy saving on a large package. The saving is small next to the cost of callbacks and defects, especially externally. We price the specified product and will tell you plainly where an alternative would or wouldn’t work. Around Andover Down, it’s better to renew all the failing joints at once. Send photos of each area and we’ll quote for the lot.
Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well.
Why clients in Andover Down choose us
- Sealing commercial buildings since 2005
- RAL and finish matching where the product range allows
- Specification-led, product-correct work
- Public liability insurance in place
See how commercial sealant jobs are priced and how we’re accredited.
On site: what to expect
We follow your site rules from the start: signing in, inductions and any permit to work. Once we are cleared to begin, the joints are worked through in the order agreed with your site contact. Jobs in and around smaller places like Andover Down are normally planned as a single visit, so photos and measurements up front really help. Then the right materials arrive with us.
- First we take quantities off the drawings and read through the specification.
- You receive a fixed quote listing scope, products and phasing.
- You tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we confirm it with the quote.
- Work follows the programme, area by area, as rooms and elevations become ready.
- Each joint is prepared, backed to depth and sealed in the product the specification names.
- Snags are cleared before handover and completed areas carry our 12-month guarantee.
Preparing the site
- Send asbestos survey details if the building is pre-2000
- Let building users know which areas are affected
- Let us know about inductions and permits
Get a fixed quote
Let us know the site, the scope and your timescale, and a fixed quote will follow. The easiest way is to speak to us on 01277 525 020 or email the details over.