Kent · England
External Mastic in Fawkham Green
Professional external mastic in and around Fawkham Green, with old sealant always removed completely and a 12-month guarantee.
- Panel joints letting water in
- Gaps where render, brick and frames meet
- Movement joints with cracked, split or missing sealant
How we handle external mastic in Fawkham Green
For buildings in Fawkham Green, we reseal external joints of all kinds, from brick movement joints to cladding panels. Every joint gets the same careful preparation: clean, sound faces and a controlled depth. Typical jobs include weathered mastic that no longer stretches and sealant that has lost its bond to the brick or render, across façade panels, joints between brick and frames and brickwork movement joints.
Somewhere as small as Fawkham Green, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Place
- Fawkham Green (DA3)
- Wider area
- Kent
- Guarantee
- A year, on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What the job involves on each surface
Copings and trims
Copings expand and contract through the day, so a flexible sealant suits them best year round.
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. We cut out the old sealant and reseal with a product suited to both surfaces.
How to look after the new joints
To keep the joints looking good and working properly:
- Act on the first splits you see
- Keep high-pressure jets off the joints
- Keep water from gutters off the wall
- Leave the joints unpainted unless we’ve said otherwise
Keep the joints clear of soil, plants and climbing growth. Damp material against the sealant shortens its life.
Act while the splits are small. At that stage it’s a simple cut out and reseal.
Quotes for external mastic in Fawkham Green
The quote reflects the job in front of us. We look at:
- The product the joint needs
- Any working-time requirements on site
- Any mould that needs treating
- Whether old sealant or filler has to be cut out
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first and agree the price before starting.
Asking for a quote
To help us quote quickly, let us know:
- What the problem is, such as mould, gaps, leaks or cracking
- If someone has resealed it before
- Access, such as stairs, a lift or height
- How many joints, rooms or windows are involved
There’s no standard price list. Instead, we send you a clear quote for your job. To arrange one, phone 0345 464 0079 or send us an email.
Common problems we fix in Fawkham Green
Weeds, moss and debris in a joint are a sign the sealant has gone. Roots and dirt hold water against the wall and make things worse.
Any of these means the joints need attention:
- Joints with sealant missing in places
- Rigid filler in a joint that should flex
- Plants rooting in failed movement joints
- Old sealant gone brittle and cracked
Schools such as New Ash Green Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
What your quote should include
- How hidden problems are handled
- What the cure time is
- Who turns up on the day
- What preparation is included
Leave it or put it right?
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. Older cottages and farmhouses around Fawkham Green can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
What it costs depends on the amount of work, how much old material has to come out and access to the work. We give a clear quote before work begins, so you know where you stand.
Why us?
- Domestic, commercial and hotel work
- Every job guaranteed for a year
- 20+ years of sealant experience
- Tidy, careful work
Take a look at our cost guide and our reviews.
FAQs for Fawkham Green
I let a flat near Longfield station. Can you help?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before work begins.
Do you cover smaller places like Fawkham Green?
Yes, Fawkham Green is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you seal joints between render and window frames?
Yes. We cut out the old sealant, prepare both faces and reseal with a flexible exterior product. We pick a colour that works with both materials.
Will the old sealant be removed?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Can you reach joints on upper floors?
That depends on how high the joints are and the ground below. Ground-floor joints are simple; for higher work, tell us about the building and we’ll confirm what’s needed.
How long does the job take?
As a guide, most jobs take anything from a few hours to several days, depending on the building. Bigger jobs take longer, and we’ll tell you how long to expect.
Do you use backing rod?
The foam is closed-cell backing rod. It stops the sealant going in too deep and bonding to three sides, which would stop it stretching.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Fawkham Green buildings and the weather
With historic houses such as Lullingstone Castle (about 3.6 miles west) nearby, there’s older building stock in the area around Fawkham Green as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For landlords with property near Longfield station, outside joints that have cracked can let damp into a rental, so check them between lets. If you live in an older home near Parish Church of Saint Peter and Saint Paul, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Fawkham Green is about 6 miles south-west of Northfleet, in Kent. Our applicators cover external mastic for householders, landlords and businesses in Fawkham Green and nearby, as part of our work across Kent. Our Kent coverage runs to 922 places, and Fawkham Green is one of them. Our London page covers work nearby.
All of DA3 is covered for external mastic. If you need external mastic at a property on Fawkham Green Road, Brands Hatch Road and Valley Road or anywhere close by, our applicators can take on the job. Other places close to Fawkham Green include Speed Gate (1 mile north-west), West Yoke (1 mile east), Ash (1 mile south-east), West Kingsdown (2 miles south-west) and Maplescombe (2 miles west). Further out, we also cover Maidstone (13 miles south-east), Dartford (6 miles north-west), Sevenoaks (7 miles south-west), Gravesend (6 miles north-east), Tonbridge (12 miles south) and Northfleet (6 miles north-east).
Around Fawkham Green
Typical jobs here are in homes near Longfield Academy and The Rising Sun pub and the streets around them. The nearest railway station is Longfield station, about 2.3 miles north-east of the centre. Nearby you will also find Eynsford Castle (2.9 miles west) and Darent Valley Hospital (4.9 miles north).
Also near Fawkham Green
More services for Fawkham Green
Honest limits
New sealant cannot fix everything, and we’d rather say so up front. Sealant will not put right:
- Damp that is not coming from the joint
- Cracked brickwork or render that needs a builder or plasterer
- Loose or hollow render, which needs re-rendering
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think.
Surfaces we seal
- Concrete & block
- Brickwork movement joints
- Façade panels
- Render & cladding joints
- Copings & trims
- Joints between brick and frames
How it works
Good joint work is mostly preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it generally takes a few hours to a few days, depending on the length of joint and the access. In a small place like Fawkham Green, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Mention any parking rules near the property
- Clear the area around the work
Get a quote
If you are in Fawkham Green and need external mastic, call 0345 464 0079 or email us. Tell us what the problem is and where, and we will agree the price before any work begins.