Mastic contractors in Harestock
Mastic packages for new-build and refurbishment projects in Harestock and across Hampshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Failed sealant in an existing building being refurbished
- External joints sealed in damp or cold conditions that are now failing
- Oversized or tapered gaps around new frames
Construction mastic for businesses in Harestock
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
On site: what to expect
Working in a building that stays open takes some planning. We sign and contain the area we are in, keep walkways clear and work section by section so the rest of the building stays in use. Work in places the size of Harestock is planned as a single visit where we can. Photos with rough sizes let us arrive with everything needed.
- First we look at the scope on site or from drawings.
- You receive a fixed quote covering scope, products and sequence.
- Site paperwork is confirmed and our CSCS-carded applicators are inducted.
- We seal plot by plot or floor by floor in line with the programme.
- Any frame gaps or issues outside our scope are flagged to the site team.
- Final snagging is completed and the 12-month guarantee applies.
Before we start on site
- Send any specification or drawings in advance
- Tell us your opening times and when work is allowed
- Point out any areas we must not close
Quotes
Photos, drawings or a schedule of the joints are often enough for a fixed quote. Where a site visit makes more sense, we’ll arrange one.
Read more
How we handle construction mastic in Harestock
External mastic depends on the weather in a way most internal trades don’t. Cold or damp mornings, frost and condensation on frames can all hold external sealing up so it helps to sequence elevations with some flexibility. Internal sealing often fills those days. If you are dealing with perimeter gaps outside the sealant’s range and different trades sealing to different standards, we can put it right. A single leaking joint is often how a building in Harestock 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.
In a smaller place such as Harestock, construction tends to mean small housing schemes, conversions and extensions to community buildings. Small schemes still need window perimeters, facade joints and internal sealant done to the specification.
Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we are clear about what is covered before work starts.
- Where
- Harestock (SO22)
- Wider area
- Hampshire
- Cover
- 12 months on our workmanship
- Quote
- Quoted before any work starts
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Places near Harestock
What else we do in Harestock
Cost factors for mastic packages
What shapes the price:
- Removal of failed or old sealant
- Induction, permit and paperwork requirements
- Quantities, in metres or numbers
- Backing rod, priming and other preparation
The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote and we will explain how it’s made up.
Details that help us quote
A good diagnosis starts with the right details. Tell us:
- The site address and postcode
- Photos of the joints, close up and from further back
- When you need the work done
- Whether an asbestos survey exists
For a fixed quote, phone 01277 525 020 or use the quote form. Our quote form is another easy route.
Honest limits
Being straight saves everyone time. New sealant won’t cure:
- Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
- Designing joint widths or choosing the specification (that sits with the designer)
- Faulty frames rather than failed sealant
If in doubt, call 01277 525 020 or email a schedule or drawings and we will say what we think before you book.
Surfaces we seal
- Brick and block movement joints
- Floor and skirting junctions
- Window and door perimeters
- Internal decorators’ caulk
- Cladding and panel joints
- Sanitary and kitchen joints
New build and refits around Harestock
Central London is about 61 miles from Harestock. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, and main contractors there need mastic that keeps to the programme. Plenty of hotels sit less than 2 miles from Harestock. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades.
Hospital estates such as Sarum Road Hospital (BMI), 1.5 miles to the south of Harestock, tend to grow and change in phases, often next to occupied wards, so facade and perimeter sealing has to fit the estates team’s plan. For contractors at a college like Peter Symonds College (0.6 miles south of Harestock), perimeters and internal sealant are timed for the holidays.
Harestock is about 2 miles north-west of Winchester, in Hampshire. Businesses, contractors and managing agents in Harestock use us for work on mastic packages, as part of our coverage of Hampshire. Across Hampshire, 723 places are covered, including Harestock. There’s a separate page for Southampton, about 12 miles away.
We cover the SO22 postcode districts. Among the streets we cover are Kennel Lane, Burley Road and Stoney Lane. Just outside Harestock, we also work in Littleton (1 mile north-west), Weeke (1 mile south), Abbotts Barton (1 mile south-east), Hyde (1 mile south-east) and Headbourne Worthy (1 mile north-east). A short drive away, we cover Eastleigh (8 miles south), Andover (11 miles north-west), Totton (14 miles south-west), Chandler's Ford (7 miles south), Hedge End (12 miles south) and Romsey (9 miles south-west).
Local landmarks in Harestock
We work on buildings around Henry Beaufort School and The Running Horse pub, among other places. The nearest railway station is Winchester station, about 1.2 miles south-east of the centre. Nearby you’ll also find Royal Observer Corps Museum (1.1 miles south-east) and Royal Hampshire County Hospital (1.5 miles south). Open spaces near Harestock include Twyford Down and Winnall Moors.
Harestock: questions and answers
Can work at a site such as University of Winchester fit around teaching?
Yes. We plan campus work around teaching, exams and residence turnarounds. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
Can you work at a site such as Wykeham Industrial Estate, by Harestock?
Yes. Estates, retail parks and business parks around Harestock, Wykeham Industrial Estate among them, are all within reach. Photos and a short description are enough for a first look.
Do you offer coloured sealant?
It depends on the product specified. Some ranges offer many colours, others very few, so we’ll confirm the colours available for the specified product with the quote.
What if there’s asbestos in the old mastic?
Some older mastics, especially in pre-2000 buildings, can contain asbestos. We check the asbestos register before cutting out old sealant in an older building, and if asbestos is suspected, work stops until it’s tested. We don’t remove asbestos-containing materials.
Can fire-rated sealing at service penetrations be included?
Where the specification calls for fire-rated or intumescent sealant around service penetrations or linear gaps, we install it to the manufacturer’s tested details. The design and sign-off belong to the designer, fire engineer or building control.
Do you work to architects’ specifications?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.
Will you just go over the old sealant?
No, never. Overlaying old sealant is a frequent cause of early failure, so everything comes out first.
Why it’s worth doing now in Harestock
Leaving mastic to whichever trade is fitting the element can look cheaper on paper. The result tends to be uneven finishes and arguments about who should seal what. A single mastic package gives one point of responsibility and a consistent finish. Small buildings around Harestock suffer from failed joints as much as large ones. Catching it early means a reseal rather than repairs.
No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. A fixed quote follows once we understand the job.
What you get with us
- One contact handling all your sites
- Colour options checked against the specified product
- Failed material removed, not covered up
- Colours chosen to suit frames, cladding or finishes where possible
Read what affects the cost or our accreditations and insurance.
Surface by surface
Internal decorators’ caulk
Caulking is often done in a hurry by whoever’s on site. Done properly, it saves decorators time and gives a clean line and reduces snags.
Kitchens and utility areas
Kitchen joints are sealed after fitting and before final clean. The sealant is a kitchen-grade product.
What we’re called out for in Harestock
Dust is the enemy of adhesion on a construction site. Plaster dust, release agents, protective film residue and damp all stop sealant bonding, so preparation matters as much here as on a reseal.
Any of the following is a good reason to get the joints checked over:
- A mastic package split between trades with no clear owner
- Sanitary sealant damaged by following trades
- External joints sealed in damp or cold conditions that are now failing
- Window and door perimeters that won’t pass inspection
Building work at universities like University of Winchester, 1.5 miles south of Harestock, is often timed for the summer, mastic included.
What to look for in a quote
- What site paperwork they can supply
- Their public liability cover
- How the existing material will be dealt with
- How they’ll work around occupants