Construction and new-build mastic in Newnham, Hampshire
Mastic packages for new-build and refurbishment projects in Newnham. CHAS accredited and fully insured, with a 12-month guarantee.
- Different trades sealing to different standards
- Snag items on joints that need redoing before handover
- Existing joints on a refurb that need cutting out and resealing
Need construction mastic in Newnham?
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Construction mastic in Newnham
The specification and the programme set the job. Where the specification names a product, we use it; any alternative we suggest is put to you before anything changes. Backing, primer and depth follow what the sealant maker sets out, so the joints perform as the designer intended. Most enquiries involve missed perimeter joints on a new elevation and different trades sealing to different standards, on floor and skirting junctions, sanitary and kitchen joints and window and door perimeters. Facilities teams, main contractors and managing agents in Newnham tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.
In the countryside around places like Newnham, conversion schemes put new frames into old stone, flint, brick or timber. Those joints need a sealant that suits an uneven, sometimes porous surface, and often a colour chosen for the building.
Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.
- Location
- Newnham (RG27)
- Region
- Hampshire
- Guarantee
- A 12-month guarantee
- Quotes
- A fixed quote before we start
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
On site: what to expect
We schedule the visit to fit the site hours and access windows you give us. While we’re working, the area stays contained and tidy, and your contact hears from us before we move to the next area. For a building around Newnham, tell us how to find it and who will meet us. Send that with the details and we will confirm the plan with the quote.
- We price from the drawings, specification and programme you send.
- 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.
- Areas are sealed plot by plot or floor by floor as the trades hand them over.
- Every joint is prepared, set to depth and sealed with the specified product.
- Snags are cleared before handover and completed areas carry our 12-month guarantee.
What we need from you
- Point out parking and an unloading spot
- Move anything stored against the joints
- Confirm the product named in the specification
Getting a fixed quote
For a fixed quote, call the office on 01277 525 020 or email us with the site address and an outline of the work. You can also send details through our quote form.
Related advice
Leave it or put it right?
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. One visit to deal with every failing joint makes more sense than several trips to a place like Newnham, rather than one at a time. Send photos of each area and we will 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.
What you get with us
- Health and safety: CHAS accredited
- Colours confirmed for the specified product
- Work to your specification and the manufacturer’s guidance
- Sealing commercial buildings since 2005
See how commercial sealant jobs are priced or our accreditations and insurance.
Places near Newnham
What else we do in Newnham
Construction mastic in Newnham: the local picture
Rainfall across the South East, Newnham included, is lower than in many parts of the UK. Even so, frost and condensation on steel and glass are common on winter mornings, so the external programme keeps a little slack. There are a number of hotels within about 2 miles of Newnham. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up.
Extensions at sites like Basingstoke and North Hampshire Hospital, 5.2 miles west of Newnham, usually sit beside working departments, and the mastic follows strict access rules. New units and refits on sites such as Optrex Business Centre, 1 mile north of Newnham, need their panel and perimeter joints sealed to the specification.
Newnham is about 5 miles east of Basingstoke, in Hampshire. We send applicators to Newnham for mastic packages. Across Hampshire, 723 places are covered, Newnham among them. There’s a separate page for Reading, roughly 12 miles from Newnham.
We cover the RG27 postcode districts for mastic packages. If your site is on Tylney Lane, Newnham Lane and Ridge Lane or close by, send details and we will quote for mastic packages. Just outside Newnham, we also work in Nately Scures (1 mile south), Hook Common (1 mile south-east), Up Nately (1 mile south), Hook (1 mile east) and Warnborough Green (2 miles south-east). Bigger towns within reach include Basingstoke (5 miles west), Farnborough (10 miles east), Fleet (7 miles east), Aldershot (10 miles east), Alton (9 miles south) and Yateley (8 miles north-east).
Near you in Newnham
For rail, the closest station is Hook station, roughly 1.2 miles east. A little further out are Odiham Castle (1.9 miles south-east) and Basing House (2.8 miles west). Green spaces nearby include Dogmersfield Lake and Tundry Hill.
Newnham: questions and answers
Is a smaller place like Newnham outside your area?
Not at all. Newnham is within our area. London and every South East county are within our area. Good photos up front let us bring everything on the first visit.
Does your area include sites such as Optrex Business Centre, near Newnham?
Yes, sites like Optrex Business Centre are within our area, along with the rest of Newnham. To start, just call the office on 01277 525 020 or email a schedule or drawings with the unit, the joints involved and your access times.
Do you take on small jobs?
Whatever the size, the process is the same: send details, get a fixed quote, we seal, guaranteed.
Can you clear a mastic snag list before handover?
Yes. We clear snags by redoing joints rather than patching them, working to your handover date.
What will the job cost?
That depends on the job: quantities, access, the product and any phasing. Call for a quote and we’ll price it properly.
What happens if old sealant might contain asbestos?
Asbestos is possible in some older mastics, particularly in buildings from before 2000. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and if asbestos is suspected, work stops until it’s tested. We don’t remove asbestos-containing materials.
Do you need to see the site first?
Many jobs can be quoted from photos, drawings or a joint schedule. If the job needs a look first, we’ll arrange a visit.
Signs you need construction mastic in Newnham
Wide, tapered or inconsistent gaps around frames are a common problem. Every product has limits on how wide a joint it can bridge, so gaps outside that range need sorting by the installer first. We flag them early rather than filling them with sealant that won’t last.
Look out for the following:
- A mastic package split between trades with no clear owner
- Oversized or tapered gaps around new frames
- External joints sealed in damp or cold conditions that are now failing
- Missed perimeter joints on a new elevation
Older buildings in the area around Newnham, such as The Vyne (4.6 miles west of Newnham), need care when sealed: the product has to suit soft or historic materials.
What to look for in a quote
- The named product and why it was chosen
- Will failed sealant be removed rather than covered?
- Will RAMS and insurance details be available?
- What level of public liability insurance do they hold?
When it isn’t the sealant
A few problems need another trade or a different fix, and we say so rather than covering them up:
- Approving fire stopping as compliant
- Frame gaps too wide for sealant, which the installer needs to correct
- Faulty frames rather than failed sealant
If in doubt, phone 01277 525 020 or email the details over and we will say what we think before you book.
Where we work in Newnham
- Floor and skirting junctions
- Internal decorators’ caulk
- Brick and block movement joints
- Cladding and panel joints
- Window and door perimeters
- Sanitary and kitchen joints
Owners, agents and contractors
We work for building owners and managing agents on sealant work across single buildings or whole portfolios. Several sites can go on one quote, so there’s one set of paperwork to deal with.
We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in Newnham can sit alongside others in a wider programme.
Maintenance after handover
A few simple habits keep the new joints working:
- Share drawings and the specification as soon as possible
- Check frame gaps are within the sealant’s range before sealing
- Brief following trades on areas that have been sealed
- Keep scrapers and abrasive pads off new beads
Record which products went where in the handover file. Future maintenance is easier when the products are known. Tell us what records you need and we’ll confirm with the quote.
A missed perimeter seal on one window can wet the reveal and the plaster inside. On a new building that means remedial work after decorating, and a delay to handover. Checking perimeters before internal finishes go on avoids it.