Thurrock · England
External Mastic in Biggin
External mastic for Biggin, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Plants rooting in failed movement joints
- Damp patches traced to an open external joint
- Panel joints letting water in
When it isn’t the sealant
Before you book, it’s worth knowing the limits too:
- Cracks in the bricks or render themselves, away from the joints
- Walls that need new movement joints cut into them
- Structural movement, which needs a surveyor or engineer
Not sure which it is? You can ring 0345 464 0079 or email us and we will tell you honestly.
Joints and surfaces we work on
- Concrete & block
- Brickwork movement joints
- Render & cladding joints
- Façade panels
- Copings & trims
- Joints between brick and frames
About our external mastic in Biggin
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we will confirm what’s needed to reach them safely. If you have hard, crazed mastic that has stopped moving and damp patches traced to an open external joint, we can put it right.
Somewhere as small as Biggin, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- Biggin (RM16)
- Wider area
- Thurrock
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Leave it or put it right?
Sealing over the top of old mastic does not hold for long. The new layer can’t bond properly to old, weathered material, so the old joint is cut out fully first. Where a wall is exposed, as many are in small places like Biggin, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Combining jobs into one visit is normally more efficient than separate visits. You’ll get one clear quote for the whole job.
Why Biggin customers choose us
- Trusted Arbo and Everbuild sealants
- We leave the area clean and tidy
- 4.9 on Google from 180+ five-star reviews
- Full insurance on every job
Take a look at our cost guide and our reviews.
Common questions in Biggin
Can you help a landlord with a rental near Tilbury Town station?
Yes, we work for landlords and letting agents. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear price.
Is external mastic in a coastal place like Biggin any different?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. Walls facing the sea are generally the first to need attention.
Will the new joint stand out?
There’s a good range of exterior colours, including greys, browns, whites and stone tones. We pick the one that suits your wall best so the joint does not draw the eye.
Is there any odour?
Sometimes, a little. It fades as the sealant cures, and ventilation helps.
Do I have to be there?
It depends on the job. For work indoors, someone needs to let us in.
Do you come to Biggin?
Yes, we do. Biggin is part of the area we cover, and the service is the same as everywhere else.
How long will you be here?
It depends on the size of the job, but most jobs take anything from a few hours to several days, depending on the building. We will give you a better idea when we quote.
How do I get a quote for external mastic in Biggin?
It depends on the job, so we quote each one individually. To get one, call 0345 464 0079 or drop us an email and tell us what needs doing and where.
Surface by surface
Joints between dissimilar materials
Where a frame or panel meets masonry, water often finds a way in. We cut out the old sealant and reseal with a product suited to both surfaces.
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. That movement goes into the joint, so the sealant in it must stay soft and stretchy.
Places near Biggin
More services for Biggin
How it works
Most of a good job is in the preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it usually takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Biggin needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Getting ready for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Keep children and pets away from the work area
- Mention if the joints have been sealed before
How to get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you’re ready, ring 0345 464 0079 or send us an email.
Read more
Can I do it myself?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
What affects the cost of external mastic
Jobs vary more than people expect. The main factors:
- How much there is to do
- When we can work, for business premises
- Mould in or behind the old joints
- The old material and how stubborn it is
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs. Call for a quick quote and we will go through it with you.
Asking for a quote
There’s no need for technical detail. Just tell us:
- If it’s domestic, commercial or a hotel
- What the problem is, such as mould, gaps, leaks or cracking
- Any previous sealing or DIY work
- The address or postcode of the job
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work before giving you a price.
Common problems we fix in Biggin
Some movement joints have been pointed up with mortar, often by someone who didn’t know what it was for. The joint can’t move, so the wall cracks somewhere else instead.
Keep an eye out for these signs:
- Joints where the bead has come unstuck
- Joints pointed up with cement by mistake
- Water getting into walls through failed joints
- Gaps where render, brick and frames meet
If you look after a building such as Tilbury Pioneer Academy, larger buildings have long runs of movement joint that eventually need resealing.
What to look for in a quote
- What the cure time is
- Whether they seal over old material or remove it
- The length of the guarantee
- Who turns up on the day
Biggin buildings and the weather
Biggin is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around Church of St Mary, old and new materials meet at the roofline and walls, which is where sealant earns its keep. If you let a flat or house near Tilbury Town station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Biggin is about 2 miles east of Grays, in Thurrock. Every kind of property in Biggin can book us for external mastic, old or new, large or small. The work is guaranteed for a year. We cover 26 towns and villages across Thurrock, large and small. You can also see our page for Chelmsford, roughly 19 miles from Biggin.
Here we cover the RM16 postcode area for external mastic. Other places close to Biggin include West Tilbury (1 mile east), Chadwell St Mary (1 mile north), Tilbury (1 mile south-west), Orsett Heath (1 mile north-west) and Little Thurrock (2 miles north-west). Larger places within reach include Stanford-le-Hope (4 miles north-east), South Ockendon (5 miles north-west), Balstonia (4 miles north-east), Corringham (5 miles north-east), Aveley (6 miles west) and South Stifford (3 miles west).
What’s near Biggin
In Biggin, that means homes and buildings near Thurrock and Basildon College, The Kings Head pub and The Gateway Academy, among other places. The nearest railway station is Tilbury Town station, about 1.2 miles south-west of the centre. Other landmarks nearby include Gravesham Community Hospital (2.2 miles south) and Walton Hall Museum (2.1 miles north-east). Not far away are Thurrock Thameside Nature Park and Sawyers Lake.