Mastic sealing for building owners and managing agents in Charlwood, Hampshire
Planning work on a mastic joint in Charlwood? We look at it, seal it with the right product and hand it over with a 12-month guarantee.
- Draught complaints from residents or tenants
- Patchy repairs in mismatched sealant
- Estate-wide sealant that is simply worn out
Mastic sealing for businesses in Charlwood
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Looking after the joints
After handover, these steps help:
- Share the asbestos register when you send details
- Avoid piecemeal callouts where you can
- Reduce knocks to communal area joints
- Keep a record of when each building was resealed
Add mastic joints to your cyclical inspections. Check for splits, open joints, brittle mastic and lifting edges and record where they are.
Mastic fails gradually, then all at once in a wet spell. Acting at the first signs keeps it a straightforward reseal and saves internal repairs.
Mastic sealing in Charlwood
In buildings from before 2000, some old mastics contain asbestos. We check the asbestos register or survey before any old sealant is cut out, and work stops for testing if there’s any doubt. Removing asbestos-containing material isn’t something we do. We work on communal kitchens and washrooms, balcony and threshold joints and shopfronts below residential blocks, and the usual reasons a site gets in touch are window mastic that has split and shrunk and draughts at frames across a block. 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.
In and around smaller places like Charlwood, landlords and agents often look after small groups of housing association properties, converted farm buildings and community buildings. Mastic around frames and on external joints wears out in time, whatever 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.
- Place
- Charlwood (SO24)
- Wider area
- Hampshire
- Cover
- 12 months on our workmanship
- Quote
- Quoted before any work starts
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Our process
Working in a building that stays open takes some planning. The work area is signed and kept contained, keep walkways clear and move on in phases so staff and visitors can carry on around us. Rural sites near Charlwood may need directions, gate codes or a contact on site. Send that with the details and we’ll confirm the plan with the quote.
- We inspect each building and record the joints that have failed.
- The quote is fixed and split as suits you.
- Dates and areas are agreed so occupiers can be told.
- Failed sealant is removed and the faces prepared.
- Joints are resealed and tooled.
- We check the finished work and confirm the guarantee.
Preparing the site
- Send any specification or drawings in advance
- Move anything stored against the joints
- Warn occupants and staff about the work
Request a quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to ring 01277 525 020 or email us with what you know.
Related advice
Looking after buildings in and around Charlwood
Central London is about 50 miles from Charlwood. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres; their frame mastic often ages block-wide. The South East is one of the drier parts of the UK. Outside mastic still needs a dry joint and the right temperature, and south- and west-facing elevations, which take the most sun and rain, often age first.
Property owners at sites such as Mansfield Business Park (to the north of Charlwood) can have mastic renewed between lettings. Older community buildings, Monkwood Mission Church among them, often have frames of mixed ages whose mastic varies. With historic buildings such as Bentworth Hall, 4.8 miles north of Charlwood, in the wider area, owners of older properties around Charlwood should expect mastic to need a product that suits old masonry.
Charlwood is about 6 miles south-west of Alton, in Hampshire. We cover Charlwood and the rest of Hampshire, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Our Hampshire coverage takes in 723 places. Our Southampton page has more on work in that area.
Postcode districts covered here: SO24 for mastic joints. 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). A short drive away, we cover 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).
Local landmarks in Charlwood
Nearby you’ll also find Alton Community Hospital (4.7 miles north-east). The countryside around Charlwood includes Red Hill and Shutts Copse.
Common questions from Charlwood clients
Is Charlwood too far out for you?
Not at all: smaller places are covered as well as towns. London and every South East county are within our area. Where we can, we group nearby jobs to make the most of each trip.
Do you cover business parks and estates near Charlwood, such as Mansfield Business Park?
Yes. We cover Charlwood and the area around it, including industrial estates, business parks and retail parks such as Mansfield Business Park. To start, just call 01277 525 020 or send details through our quote form with the unit, the joints involved and your access times.
Is mastic sealing guaranteed?
There is a 12-month guarantee on our workmanship and we hold public liability insurance.
Will you quote for a small job?
Small jobs are welcome alongside larger packages. Send details for a fixed quote.
Can you follow the specification on our project?
Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it.
Will you come and look before quoting?
Many jobs can be quoted from photographs, drawings or a joint schedule. If the job needs a look first, we will arrange a visit before quoting.
Do you work with property factors and landlords?
We do. Most of our mastic sealing is for agents, factors, housing associations and portfolio landlords and work can be quoted per building or as a whole.
When to bring in a specialist
A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.
Why act early in Charlwood
Open external joints let water into walls and around frames. That can lead to damp, staining and damage to finishes, which is harder to deal with than resealing. 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.
Pricing mastic joints depends on how many there are, their condition and the access, plus any specification you are working to. Ask us for a fixed quote.
Why choose Mastic Doctor in Charlwood
- Constructionline member
- Colours confirmed for the specified product
- One contact handling all your sites
- Health and safety: CHAS accredited
Take a look at how commercial sealant jobs are priced and our accreditations.
How the job changes by surface
Window and door perimeters on blocks
On most blocks, the frame-to-wall joint is where failure shows first. We remove the failed mastic, prepare the faces, add backing rod if the joint is deep and reseal.
External movement joints
Movement joints are cleaned out, backed with rod and resealed with a sealant of the right movement class.
Nearby places to Charlwood
More services for Charlwood
How the quote is worked out
Sealant work doesn’t have a standard rate, since sites vary so much. What we look at:
- The size and state of each joint
- Quantities, in metres or numbers
- Specialist products, such as fire-rated or hygienic sealants
- Travel to remote or island sites
Whether it’s a single area or a whole estate, the same things set the price: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote and we’ll put a fixed figure on it.
Sending details for a quote
Whether it’s one area or a whole building, the same details help:
- Whether the building will be occupied during the work
- Rough lengths or quantities, or drawings if you have them
- Specification clauses that apply
- Clear photos of the problem areas
Need a figure for a tender or a budget? We will quote against your scope and drawings you can plan around. For a chat about it beforehand, phone 01277 525 020 or send details through our quote form.