Construction and new-build mastic in Charlwood, Hampshire
Mastic packages for new-build and refurbishment projects across Charlwood, carried out by CSCS-carded applicators. CHAS accredited and fully insured.
- External joints sealed in damp or cold conditions that are now failing
- Mastic snags holding up handover
- Sealant knocked or painted over by other trades
Construction mastic in Charlwood
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 Charlwood
Most of the packages we price run well beyond frames: frame perimeters inside and out, caulking to trims and boards where the specification calls for it, sanitary silicone, kitchens, and the final snag list. Splitting those between trades often leaves gaps in responsibility and gives you a consistent finish across the job. If you’re dealing with new external sealant already peeling away and a mastic package split between trades with no clear owner, we can help. Most enquiries from Charlwood start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.
Construction in and around smaller places such as Charlwood 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.
A 12-month guarantee applies to all our work in Hampshire. If an installation problem shows up, speak to us on 01277 525 020 or email us and we’ll arrange a return visit.
- Place
- Charlwood (SO24)
- Wider area
- Hampshire
- Cover
- 12 months on our workmanship
- Price
- A fixed quote before we start
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Why deal with it now?
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. Halls, stores and units around places like Charlwood may not be checked every day, which gives a failed joint time to do damage. Renewing joints in good time avoids the problem.
Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote.
Why clients in Charlwood choose us
- Work to your specification and the manufacturer’s guidance
- Coloured sealants to suit the setting, where available
- Fully insured, including public liability cover
- Constructionline member
Take a look at our cost guide or our accreditations and insurance.
After the work
To get the most from the new sealant:
- Record the products used in the O&M file
- Release areas for mastic once other trades have finished in them
- Put any product change through the designer first
- Brief following trades on areas that have been sealed
The package carries our 12-month guarantee for workmanship. The guarantee covers how we sealed, not later damage by other trades which is why protection after sealing matters.
One unsealed frame can let water into finished internal areas. On a new building that means remedial work after decorating, and a delay to handover. Checking perimeters before internal finishes go on avoids it.
How the quote is worked out
There’s no standard rate for sealant work, since sites vary so much. What we take into account:
- The product specified
- Induction, permit and paperwork requirements
- How much existing material needs removing
- Distance, for remote addresses
The product called for affects the cost, as does the preparation each joint needs, such as cutting out, priming or new backing rod. Access, phasing and site rules also count.
What to include in your enquiry
We can often quote from photographs and a few details. Please tell us:
- Approximate linear metres or a joint schedule
- Asbestos survey details if the building is older
- Any specification or named product
- The postcode of the building
Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, give us a call on 01277 525 020 or email a schedule or drawings.
When something else is needed
Some faults sit outside our scope, and we say so rather than covering them up:
- Glazing units that are cracked or misted
- Frame gaps too wide for sealant, which the installer needs to correct
- Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
If you are not sure, just ring 01277 525 020 or email a schedule or drawings and we’ll give you a straight answer before you book.
Where we work in Charlwood
- Sanitary and kitchen joints
- Internal decorators’ caulk
- Brick and block movement joints
- Window and door perimeters
- Floor and skirting junctions
- Cladding and panel joints
Construction mastic around Charlwood: points for this area
Central London is about 50 miles from Charlwood. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, which keeps mastic packages in demand. Rainfall across the South East, Charlwood included, is lower than in many parts of the UK. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, so we time external mastic for dry faces and agree it with the site team.
Extensions at sites like Alton Community Hospital, 4.7 miles to the north-east of Charlwood, usually sit beside working departments, and the mastic follows strict access rules. Recladding or extending a unit at a site like Mansfield Business Park, 2.4 miles to the north of Charlwood, brings panel joints and frame perimeters into the programme.
Charlwood is about 6 miles south-west of Alton, in Hampshire. We cover commercial sites throughout Charlwood, for single jobs and planned programmes alike. Across Hampshire, 723 places are covered, including Charlwood. There’s a separate page for Southampton, about 19 miles away.
Business premises anywhere in SO24 are within our area. Just outside Charlwood, we also work in Monkwood (1 mile south-west), Kitwood (1 mile north-west), Gilbert Street (1 mile north-west), Ropley (2 miles west) and West Tisted (2 miles south-west). Further afield, our area takes in Basingstoke (13 miles north), Winchester (12 miles west), Havant (15 miles south), Eastleigh (15 miles south-west), Horndean (12 miles south) and Alton (6 miles north-east).
What’s near Charlwood
A little further out are Alton Community Hospital (4.7 miles north-east). Open spaces near Charlwood include Red Hill and Shutts Copse.
Do you need construction mastic in Charlwood?
On a live site, contamination is the biggest threat to a new joint. Plaster dust, release agents, protective film residue and damp all stop sealant bonding, so preparation matters as much here as on a reseal.
Clients typically get in touch after noticing one or more of the following:
- Oversized or tapered gaps around new frames
- Internal caulk splitting as the building dries out
- A mastic package split between trades with no clear owner
- Frame perimeters left unsealed or poorly sealed
With historic properties like Bentworth Hall, 4.8 miles to the north of Charlwood, in the area, refurbishment work often meets old masonry that needs compatible sealants.
Before you book anyone
- Can the work be phased to keep areas open?
- Their approach to joint depth and backing
- Who will actually carry out the work
- Health and safety accreditation such as CHAS
Places near Charlwood
Also in Charlwood
Common questions from Charlwood clients
Can you work at a site such as Mansfield Business Park, by Charlwood?
Yes, sites like Mansfield Business Park are within our area, along with the rest of Charlwood. To start, just call 01277 525 020 or email us with the unit, the joints involved and your access times.
Can you take on a job at a hospital such as Alton Community Hospital?
Yes, hospitals are one of the sectors we cover. Each area is agreed with the ward or department and the estates team in advance.
Do you do internal caulk as well as external mastic?
The scope comes from the specification and drawings, but frames, sanitary, kitchens, caulk where specified and snagging are typical.
When can you be on site?
Mention the site’s hours and access windows in your enquiry, and we will plan around them. You can reach the office between 8am and 5pm, Monday to Friday.
Are you fully insured?
Yes. Our insurance certificate can be sent alongside the quote.
Do you offer coloured sealant?
In many cases, yes. Sealants are made in a wide range of standard colours, and matching to RAL references or nearby finishes is commonly requested. We confirm what’s available for the specified product when we quote.
Do you do fire-rated sealing on new builds?
It can be part of the package where specified. Tell us what records you need and we will confirm with the quote.
From enquiry to sign-off
A typical day starts with protection: tape along each joint edge and covers over finishes, stock and equipment close by. On site, the work typically takes as long as the agreed sequence needs, which comes down to joint lengths, access and handover dates, and our waste is bagged and taken away as we go. For work around Charlwood, we aim to finish in one visit, so we ask for photographs and rough sizes first. That way the right products come on the day.
- First we take quantities off the drawings and read through the specification.
- 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.
- Before handover, snags are dealt with and the package is signed off under our 12-month guarantee.
Preparing the site
- Move anything stored against the joints
- Arrange parking or a loading space
- Point out any areas we must not close
Getting 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, speak to us on 01277 525 020 or send photos by email.