Mastic Sealing in Chartridge
Mastic sealing for building owners, managing agents and housing associations in Chartridge and across Buckinghamshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Estate-wide sealant that is simply worn out
- Worn sealant at communal door frames
- Open joints in brickwork or panels
Mastic sealing near Chartridge
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
How the job changes by surface
Tenement and older buildings
Traditional buildings have joints that need a careful approach. We look at the substrate before choosing a sealant.
Communal areas
Communal areas stay in use while we work. We work in sections so access is never blocked.
Mastic sealing for commercial buildings in Chartridge
There isn’t one mastic for every joint on a building. Window perimeters and external joints often take a low-modulus neutral-cure silicone, and MS polymer sealants stick well to many substrates and often take paint, and colours are confirmed for whichever product is used. We work on external wall and movement joints, balcony and threshold joints and communal entrances and stairwells, and the failures we’re asked to look at most are no planned programme for sealant and movement joints with sealant missing. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Chartridge, preparation and product choice get the time they need.
In and around smaller places like Chartridge, 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.
We sign every job off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.
- Location
- Chartridge (HP5)
- Wider area
- Buckinghamshire
- Cover
- A 12-month guarantee
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Page updated
- 3 November 2026
For managing agents and facilities managers
As a CHAS accredited contractor and Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.
Agents, factors and owners’ representatives all follow the same route: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.
Towns and villages near Chartridge
What else we do in Chartridge
Cost factors for mastic joints
There’s no standard rate for sealant work, because every site is different. What we take into account:
- Working within restricted access windows
- Travel to remote or island sites
- Whether old sealant has to be cut out first
- Specialist products, such as fire-rated or hygienic sealants
What a job costs comes down to how many linear metres there are, what has to come out first and the access. Call for a fixed quote when you are ready.
Before you send an enquiry
The more we know, the firmer the quote. When you get in touch, include:
- Clear photographs of the problem areas
- The asbestos register, for older buildings
- Any dates the work must fit around
- The site address and postcode
Specifications, drawings and tender packages are welcome with any enquiry, and we will price the work to it. Smaller jobs need nothing more than photos and a few notes.
Honest limits
Before quoting, we check that sealant is the right answer. It isn’t the answer for:
- Leaks from above rather than through a joint
- Frames that are rotten, warped or broken
- Masonry that has broken away beside the joint
Not sure which it is? You can ring 01277 525 020 or email us and we’ll tell you honestly before you book.
Where we work in Chartridge
- Communal entrances and stairwells
- Shopfronts below residential blocks
- Window and door perimeters on blocks
- Balcony and threshold joints
- External wall and movement joints
- Communal kitchens and washrooms
On site: what to expect
Occupied buildings need a little choreography. We sign and contain the area we are in, with routes through the building left open and move on in phases so staff and visitors can carry on around us. If others near Chartridge need work, visits can be combined, which keeps travel down. A fixed quote is given before anything starts.
- We inspect each building and record the joints that have failed.
- You get a fixed quote, per block or for the whole programme.
- We agree the programme and dates with you.
- Failed sealant is removed and the faces prepared.
- New sealant goes in with backing rod and primer where needed.
- Each building is checked and signed off with the 12-month guarantee.
Preparing the site
- Send any specification or drawings in advance
- Explain the parking and delivery arrangements
- Share the asbestos register for older buildings
Request a quote
To get a fixed quote, call the office on 01277 525 020 or send photos by email. Our quote form is another easy route.
Read more
Common questions from Chartridge clients
Do you work for managing agents with blocks near Great Missenden station?
Yes. Managing agents, landlords, property factors and housing associations are who this service is for. We work to your notice and access arrangements.
Does your area include sites such as Waterside Business Park, near Chartridge?
Yes, sites like Waterside Business Park are within our area, along with the rest of Chartridge. Photos and a short description are enough for a first look.
How do you choose the sealant?
Where there’s a specification, we use the product it names. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.
What paperwork can you provide?
We are CHAS accredited, a Constructionline member and carry public liability insurance. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.
Do you seal on top of existing sealant?
No. Overlaying old sealant is a frequent cause of early failure, so everything comes out first.
How do you reach windows on upper floors?
We talk through access for each building when we quote. Tell us the building height and any access already in place and we’ll confirm the approach in the quote.
How long before the joints can be used?
We will confirm how long the chosen product needs to cure.
For owners and agents in Chartridge
Chartridge sits in one of the drier corners of the country, the South East. External mastic still waits for dry faces and the right temperature, and elevations facing the sun and the prevailing weather are usually where frame mastic ages first. At about 28 miles from central London, Chartridge is within reach of the capital. Managed blocks of flats are a big part of commuter-belt property; their frame mastic often ages block-wide.
Property owners at sites such as Waterside Business Park, 2.3 miles to the south-east of Chartridge, can have mastic renewed between lettings. Buildings close to stations like Great Missenden station (to the south-west of Chartridge) are often flats over shops, with frame mastic to keep sound. Schools and community buildings such as Chartridge Combined School need frame and external mastic kept sound like any building.
Chartridge is about 2 miles north-west of Chesham, in Buckinghamshire. Businesses, contractors and managing agents in Chartridge use us for work on mastic joints. 308 places across Buckinghamshire fall within our area, including Chartridge. Our Reading page has more on work in that area.
Work on mastic joints is covered throughout HP5. Buildings on Chartridge Grange Drive and Cogdells Lane are within our area. Sites close to Chartridge are covered too, including Asheridge (1 mile north-east), Bellingdon (1 mile north), Hundridge (1 mile south), Ballinger Common (1 mile west) and Pond Park (1 mile east). A short drive away, we cover Aylesbury (10 miles north-west), High Wycombe (8 miles south-west), Marlow (12 miles south-west), Amersham (4 miles south-east), Beaconsfield (8 miles south) and Chalfont St Peter (9 miles south-east).
Around Chartridge
We work on buildings around Chiltern Hills Academy and The Bell pub and the streets around them. For rail, the closest station is Great Missenden station, about 3.1 miles south-west of the centre. Well-known places in the area include Roald Dahl Museum and Story Centre (3 miles south-west) and Hawridge Court (1.5 miles north-east). Green spaces nearby include Pavis Wood and Sands Bank.
Looking after the joints
Sealant joints are maintenance items, and how long they last depends on how they’re treated. We suggest:
- Check sealant joints during planned building inspections
- Avoid piecemeal callouts where you can
- Protect low-level joints in entrances
- List the paperwork your organisation requires when you send details
Add mastic joints to your cyclical inspections. Check for splits, open joints, brittle mastic and lifting edges, and note the building and elevation.
The longer failed joints are left, the more likely the substrate edges break up. Once that happens, repairs come before resealing and the job grows.