Construction and new-build mastic in Longmoor, Hampshire
Construction mastic in Longmoor, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.
- Bath and shower joints scraped during the final clean
- External joints sealed in damp or cold conditions that are now failing
- Internal caulk splitting as the building dries out
Construction mastic near Longmoor
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Construction mastic in Longmoor, done properly
Mastic Doctor has been a subcontractor on construction projects for over 20 years. Quantities come off the drawings, the sequence is agreed with the site manager and the work follows the trades. To price a package in Longmoor, send drawings and the specification through our quote form. The enquiries we see most involve caulk cracking where joints are moving more than expected and early adhesion failures on new external joints, on internal decorators’ caulk, cladding and panel joints and brick and block movement joints. A specialist sealant contractor works differently from a general builder: on jobs in Longmoor, preparation and product choice get the time they need.
Sites around smaller places like Longmoor can be a fair drive from suppliers, so we come with everything the package needs. Drawings, photos and the programme let us give a fixed quote.
Every job ends the same way: guaranteed. Our workmanship is backed for 12 months, and we explain exactly what that covers when we quote.
- Place
- Longmoor (GU33)
- Wider area
- Hampshire
- Guarantee
- A 12-month guarantee
- Quote
- A fixed quote before we start
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Your questions answered
Is Longmoor Enterprise Park, near Longmoor, within your area?
Yes. Our area takes in Longmoor and its surroundings, with estates and business parks such as Longmoor Enterprise Park included. Send details of the unit and the work through our quote form for a quick quote.
Is Longmoor too small for you to travel to?
No. Places such as Longmoor are covered as much as the big towns. We cover Greater London and the counties of the South East. We plan jobs in smaller places so return trips are kept to a minimum.
How long does a typical visit take?
It depends on the scope, though a typical visit usually takes a few days on a modest refurbishment and longer on multi-plot or multi-storey schemes. Larger or phased jobs take longer, and we will give you a timescale with the quote.
What site paperwork can you supply?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.
How much does the work cost?
There isn’t a price list, because every site is different. With photographs or drawings, we can give you a fixed quote.
What hours do you work?
Mention the site’s hours and access windows in your enquiry, and we’ll schedule the work to suit. Our office runs Monday to Friday, 8am until 5pm.
Can you work to our specification?
Yes. Send it with your enquiry, and the quote will be based on it, flagging anything that needs clarifying.
New build and refits around Longmoor
Longmoor sits in one of the drier corners of the country, the South East. That doesn’t stop wet spells, or frosty starts that leave panels too damp to seal, so the external programme keeps a little slack. Longmoor is about 45 miles from central London. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, which keeps mastic packages in demand.
When units on a site such as Longmoor Enterprise Park (less than half a mile west of Longmoor) are refurbished or reclad, the panel joints and window perimeters are part of the mastic package. On a healthcare site such as Chase Hospital, which lies north of Longmoor, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully.
Longmoor is about 3 miles south of Bordon, in Hampshire. Any commercial site in Longmoor is covered, whether it’s a single job or part of a planned programme. We work across 723 places in Hampshire, large and small. For work in that direction, see our Portsmouth page, about 20 miles away.
Commercial sites across GU33 are covered for mastic packages. For a building on Woolmer Road, Roberts Road and Methuen Road or nearby, we can quote for mastic packages. Nearby places we also cover include Greatham (1 mile west), Woolmer (1 mile north-west), Liss Forest (2 miles south-west), The Mint (2 miles south) and Blackmoor (2 miles north-west) for mastic packages. A short drive away, we cover Havant (15 miles south), Fleet (14 miles north), Horndean (13 miles south-west), Aldershot (13 miles north), Alton (7 miles north-west) and Waterlooville (15 miles south-west).
Near you in Longmoor
Longmoor’s nearest station is Liss station, about 2.3 miles south-west of the centre. Other landmarks nearby include The Romany Museum (3.4 miles north-west) and Chase Community Hospital (2.3 miles north). The countryside around Longmoor includes Wheeler's Down and Liss Riverside Railway Walk North.
When it isn’t the sealant
Part of a good diagnosis is knowing where sealant stops. You’ll hear from us if the cause turns out to be one of these:
- Designing joint widths or choosing the specification (that sits with the designer)
- Damage to finishes by other trades after we have sealed
- Deciding which fire-stopping product a penetration needs
If you are not sure, just call the office on 01277 525 020 or email us and we’ll give you a straight answer.
Where we work in Longmoor
- Floor and skirting junctions
- Sanitary and kitchen joints
- Brick and block movement joints
- Internal decorators’ caulk
- Cladding and panel joints
- Window and door perimeters
How the quote is worked out
Each job is priced on its own details. The main factors are:
- Access and working height
- Whether old sealant has to be cut out first
- Site requirements such as inductions and permits
- How much there is to seal
Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.
What we need to price the job
Whether it’s one area or a whole building, these details speed things up:
- Any dates the work must fit around
- Approximate linear metres or a joint schedule
- Access details, including height
- The site address and postcode
A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we’ll fill any gaps with a visit.
What we’re called out for in Longmoor
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 use what’s specified, and any substitute goes to you for acceptance.
Common reasons buildings call us in:
- Sealant knocked or painted over by other trades
- Perimeter gaps outside the sealant’s range
- Mastic snags holding up handover
- Internal caulk splitting as the building dries out
When a school such as Greatham Primary School is extended or refurbished, the mastic package is often squeezed into the holidays.
What your quote should include
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- Health and safety accreditation such as CHAS
- Who will actually carry out the work
- Will failed sealant be removed rather than covered?
Doing it in-house
Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.
Our process
When we get to site, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before anything is cut or cleaned, and the work usually takes anything from a day of snagging to several weeks of plot-by-plot sealing on a phased scheme. Jobs in and around smaller places like Longmoor are normally planned as a single visit, so we ask for photos and rough sizes first. Then the right materials arrive with us.
- We walk the site or review drawings to understand the package.
- 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.
Preparing the site
- Tell us what induction or permit system the site runs
- Move anything stored against the joints
- Point out parking and an unloading spot
Get a fixed quote
We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To start the process, call the office on 01277 525 020 or email drawings and photos.
Related advice
Commercial clients in Longmoor
Housing associations and managing agents often need work done across blocks and communal areas. We phase the work so people keep access, and each stage is agreed with your contact.
Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Sites in Longmoor can sit alongside others in a wider programme across Hampshire.