Construction and new-build mastic in Andwell, Hampshire
Sealant work in Andwell for main contractors, managing agents and facilities managers: mastic packages for new-build and refurbishment projects, with a fixed quote first.
- Bath and shower joints scraped during the final clean
- Oversized or tapered gaps around new frames
- Existing joints on a refurb that need cutting out and resealing
Construction mastic across Andwell
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
How we handle construction mastic in Andwell
Most of the packages we price run well beyond frames: external door and window perimeters, internal decorators’ caulk where specified, sanitary joints in bathrooms and washrooms, kitchen worktops and splashbacks, and snagging before handover. Splitting those between trades often leaves gaps in responsibility. If you have old sealant on a refurbishment that needs stripping before new work and new external sealant already peeling away, we can put it right, on brick and block movement joints, floor and skirting junctions and internal decorators’ caulk alike. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Andwell, preparation and product choice get the time they need.
Conversions of older rural buildings near smaller places such as Andwell bring stone, flint, brick and timber up against new glazing. A product that grips an irregular face, with a colour that suits the building’s character, is typically what’s needed.
What our 12-month guarantee covers is the way we did the job: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.
- Place
- Andwell (RG25, RG27, RG24)
- Region
- Hampshire
- Cover
- A 12-month guarantee
- Quotes
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Andwell: questions and answers
Can you take on a job at a hospital such as Basingstoke and North Hampshire Hospital?
Yes, provided the work is planned with the site’s estates team. We follow the site’s permits, sign-in and infection-control procedures in every area.
Is Hatch Industrial Park, near Andwell, within your area?
Yes, sites like Hatch Industrial Park are within our area, along with the rest of Andwell. To start, just call 01277 525 020 or email a schedule or drawings with the unit, the joints involved and your access times.
How do you work with the site programme?
Our work is sequenced around the programme. Each plot, floor or elevation is sealed when it’s ready.
What happens if old sealant might contain asbestos?
Managing asbestos is the dutyholder’s responsibility, so we’ll ask for the register before work on an older building. If anything suspect turns up, we stop until it’s tested.
What happens if the weather stops external sealing?
External sealant needs a dry joint and a temperature within the product’s range. Frosty or damp mornings can hold up external sealing, so internal areas are often done on those days.
Do you have public liability insurance?
Yes. Mastic Doctor is fully insured, public liability included.
Can staff carry on working while you’re here?
Typically, yes. Phased work can be planned so areas stay in use, with each area protected and signed.
Construction mastic in Andwell: the local picture
Andwell is in the South East, one of the UK’s drier regions. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, which is why external dates are agreed with the site manager. Central London is about 43 miles from Andwell. Construction around the commuter belt mixes station-side flats with refurbished offices and units, and main contractors there need mastic that keeps to the programme.
Older buildings in the area around Andwell, such as The Vyne, which lies north-west of Andwell, need care when sealed: the product has to suit soft or historic materials. New wings at hospitals like Basingstoke and North Hampshire Hospital (to the west of Andwell) bring long runs of window and panel joints to seal.
Andwell is about 3 miles south-west of Hook, in Hampshire. We cover Andwell and the rest of Hampshire, with the same fixed quotes and 12-month guarantee as everywhere else. Our Hampshire coverage takes in 723 places. Our Reading page has more on work in that area.
Work on mastic packages is covered throughout RG25, RG27 and RG24. Streets here include Greywell Road and Canal Reach, and sites on any of them can send details for a fixed quote. We also cover Mapledurwell (1 mile south), Water End (1 mile north-east), Old Basing (1 mile west), Lychpit (2 miles west) and Wildmoor (2 miles north). Nearby towns on our patch include Basingstoke (4 miles west), Farnborough (11 miles east), Fleet (8 miles east), Aldershot (11 miles east), Alton (8 miles south) and Yateley (9 miles north-east).
What’s near Andwell
For rail, the closest station is Hook station, about 2.4 miles east of the centre. Well-known places in the area include Festival Place (3.1 miles west) and Basingstoke and North Hampshire Hospital (4.2 miles west). The countryside around Andwell includes Dogmersfield Lake and The Mill Field.
Why it’s worth doing now in Andwell
Refurbishments sometimes budget for new windows when the frames are sound and only the seal has failed. Sound frames often need only a new perimeter seal and that’s a far smaller job. If the frame is life-expired, we will tell you. Around Andwell, it’s better to renew all the failing joints at once, rather than one at a time. Photos of every joint help us quote for the whole job.
The price depends on the quantity of joints, how much old material needs removing and the access. Call for a fixed quote when you’re ready.
What you get with us
- 12-month guarantee on workmanship
- Constructionline member for supplier checks
- One phone line for London, the South East and Scotland
- Fixed quotes based on photos, drawings or a visit
Signs you need construction mastic in Andwell
Value-engineered products sometimes end up in the wrong joints. A sealant that isn’t right for the substrate or the movement will fail ahead of time. We stick to the specified product, or put any alternative to you first.
Most enquiries start with something like this:
- Sanitary sealant damaged by following trades
- Internal caulk splitting as the building dries out
- New external sealant already peeling away
- Failed sealant in an existing building being refurbished
Recladding or extending a unit at a site like Hatch Industrial Park (to the south-west of Andwell) brings panel joints and frame perimeters into the programme.
What your quote should include
- How long is the guarantee, and what does it include?
- How they handle RAMS and site documents
- Whether old or failed sealant will be cut out, not overlaid
- Their approach to joint depth and backing
What sealant work can’t fix
Before quoting, we check that sealant is the right answer. It isn’t the answer for:
- Joint design decisions that belong to the architect or engineer
- Damage to finishes by other trades after we have sealed
- Oversized gaps that need packing or adjustment by others
Not sure which it is? You can speak to us on 01277 525 020 or send details through our quote form and we will tell you honestly.
Surfaces we seal
- Internal decorators’ caulk
- Sanitary and kitchen joints
- Cladding and panel joints
- Window and door perimeters
- Floor and skirting junctions
- Brick and block movement joints
Also near Andwell
Also in Andwell
What sets the cost
Each job is priced on its own details. The things that drive the figure:
- The total length or number of joints
- Induction, permit and paperwork requirements
- Location, for remote and island sites
- Working within restricted access windows
There’s no price list, since every building and every scope is different. For a fixed figure, call for a quote.
What to include in your enquiry
There’s no need for a formal survey. These details are enough to start:
- Any dates the work must fit around
- Drawings or a marked-up plan, if available
- Photos of the joints, close up and from further back
- Anything awkward about access or site hours
The quickest route to a quote is a few photos and the site postcode. Send them through the quote form, or call 01277 525 020 or email us to discuss it first.
Our process
A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. The work itself usually takes a few days on a modest refurbishment and longer on multi-plot or multi-storey schemes, and our waste is bagged and taken away as we go. Rural sites near Andwell may need directions, gate codes or a contact on site. Send that with the details and we will confirm the plan with the quote.
- Drawings, specification and programme come to us.
- We take off quantities and return a fixed quote.
- The sequence is agreed with the site manager.
- Each area is sealed when it’s released.
- Joints are prepared, backed and sealed to the specification.
- Snags are cleared and the package signed off with our 12-month guarantee.
Preparing the site
- Agree which areas must stay open
- Send any specification or drawings in advance
- Point out parking and an unloading spot
Quotes
For a fixed quote, call 01277 525 020 or send details through our quote form. Our quote form is another easy route.
Related advice
How the job changes by surface
Kitchens and utility areas
Commercial kitchens often need hygienic or food-safe sealants. We follow the specification and seal to a smooth, cleanable finish.
Bathrooms, en suites and washrooms
Across a block of flats or a hotel, sanitary sealing is repeated in every room. A single team keeps the standard consistent, plot by plot or floor by floor.