Construction and new-build mastic in High Cross, Hampshire
Construction mastic in High Cross, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.
- Frame gaps too wide for sealant alone
- Frame perimeters left unsealed or poorly sealed
- Existing joints on a refurb that need cutting out and resealing
Construction mastic near High Cross
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Construction mastic in High Cross
On refurbishments, the mastic package typically includes cutting out old sealant as well as sealing new work. Old beads come out completely, as fresh silicone can’t grip old, and on older buildings we ask for the asbestos survey before disturbing anything. After that, the joints are prepared and sealed to the specification. The enquiries we see most involve existing joints on a refurb that need cutting out and resealing and frame gaps too wide for sealant alone, on window and door perimeters, sanitary and kitchen joints and cladding and panel joints. Most enquiries from High Cross start with one failed joint and grow into a wider look at the building: we look at the rest while we’re there and tell you what we find.
Construction in and around smaller places such as High Cross is often barn conversions, small groups of houses or extensions to halls and schools. Each still needs a proper mastic package: window perimeters, facade joints and internal sealant to the specification.
Every job ends the same way: guaranteed. Our workmanship is backed for 12 months, and the quote explains what it covers.
- Where
- High Cross (GU32)
- Region
- Hampshire
- Cover
- 12 months on every job
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Facades, frames and programmes in High Cross
Central London is about 50 miles from High Cross. Construction around the commuter belt mixes station-side flats with refurbished offices and units, so mastic packages have to keep pace with busy programmes. High Cross sits in one of the drier corners of the country, the South East. 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.
School extensions, at buildings such as Froxfield Church of England Primary School, normally run to the summer holidays, mastic included.
High Cross is about 3 miles north-west of Petersfield, in Hampshire. Across the GU32 postcode area, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. 723 places across Hampshire fall within our area, including High Cross. For work in that direction, see our Portsmouth page (16 miles or so).
If you need construction mastic in GU32, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. We cover commercial and managed buildings on High Cross Lane, Dellfield and Deans Dell and the roads nearby. Sites close to High Cross are covered too, including Froxfield Green (1 mile south-west), Oakshott (2 miles north-east), Langrish (2 miles south), Stroud (2 miles south) and Steep (2 miles east). Nearby towns on our patch include Winchester (15 miles west), Havant (12 miles south), Horndean (9 miles south), Alton (8 miles north), Waterlooville (11 miles south) and Petersfield (3 miles south-east).
Landmarks near High Cross
The closest station to High Cross is Petersfield station, roughly 2.6 miles south-east. Well-known places in the area include Petersfield Community Hospital (2.7 miles south-east) and Bear Museum (3.1 miles south-east). The countryside around High Cross includes Wheatham Hill and Liss Riverside Railway Walk South.
Why it’s worth doing now in High Cross
Some packages split mastic across the window fitter, kitchen fitter and plumber. 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. Halls, stores and units around places like High Cross 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.
A quote for mastic packages depends on how many there are, their condition and the access. Ask us for a fixed quote.
Why clients in High Cross choose us
- One phone line for London, the South East and Scotland
- Joints cleaned back to sound surfaces
- Constructionline member
- Work carried out by CSCS-carded applicators
Take a look at what affects the cost and our accreditations.
Your questions answered
Can you keep pace with our programme in High Cross?
Yes. Send the programme and drawings, and we will plan the mastic to suit the stages. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.
Is High Cross too small for you to travel to?
Not at all: smaller places are covered as well as towns. We cover Greater London and the counties of the South East. Send photos and a list of what needs doing, and we will plan the job to need as few trips as possible.
How long do sealant joints last?
There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular inspection is the best way to catch problems early.
What will the job cost?
Each job is quoted on its own details. For yours, call 01277 525 020 or email drawings and photos with a description of the work.
Will you quote for a small job?
We quote for single jobs as well as large packages and programmes. Photos and a description are enough to start.
How do you choose the sealant?
The specification comes first, if there is one. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
What’s the quickest route to a quote?
It works in four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. Step one needs little more than photographs and a postcode.
Maintenance after handover
Sealant joints are maintenance items, and how long they last depends on how they’re treated. Our advice:
- Keep product details for future maintenance
- Ask cleaners to use soft cloths around fresh sealant
- Check frame gaps are within the sealant’s range before sealing
- Keep finished joints away from paint, plaster and scrapers
Record which products went where in the handover file. Future maintenance is easier when the products are known and avoids guesswork when joints are renewed. Tell us what records you need and we’ll confirm with the quote.
Oversized gaps are a problem better caught early. Sealant stretched over an oversized gap won’t last. We raise them during our first walk of the area.
Do you need construction mastic in High Cross?
A joint without backing rod or bond-breaker often fails early. Fixed to three faces, the sealant rips the first time the joint opens.
It’s worth sending us details if you spot any of the following:
- Caulk cracking where joints are moving more than expected
- Inconsistent sealant finishes from plot to plot
- Window and door perimeters that won’t pass inspection
- Sanitary sealant damaged by following trades
New wings at hospitals like Petersfield Hospital (2.8 miles south-east of High Cross) bring long runs of window and panel joints to seal.
Questions to ask before you book
- Whether their applicators hold CSCS cards
- How the existing material will be dealt with
- What level of public liability insurance do they hold?
- How the joint faces will be prepared and primed
How a job runs
We follow your site rules from the start: signing in, inductions and any permit to work. With the paperwork done, we take the joints in the sequence agreed with you. For a building around High Cross, tell us how to find it and who will meet us. Add it to your enquiry and we will build it into the plan.
- We start with the drawings, specification and programme.
- Quantities are measured and a fixed price returned.
- 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.
What we need from you
- Explain the parking and delivery arrangements
- Move anything stored against the joints
- Let building users know which areas are affected
Ask for a quote
Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. To get it moving, give us a call on 01277 525 020 or use the quote form.
Related advice
Should maintenance staff do it?
Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong normally costs more in the end than doing them right.
Redoing a failed joint usually costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.
What sealant work can’t fix
Honesty saves time and money. Fresh joints won’t solve:
- Joint design decisions that belong to the architect or engineer
- Approving fire stopping as compliant
- Frame gaps too wide for sealant, which the installer needs to correct
Not sure which it is? You can give us a call on 01277 525 020 or email drawings and photos and we will tell you honestly.
Where we work in High Cross
- Floor and skirting junctions
- Sanitary and kitchen joints
- Brick and block movement joints
- Internal decorators’ caulk
- Window and door perimeters
- Cladding and panel joints