Surrey · England
External Mastic in Dockenfield
External mastic across Dockenfield and nearby, with old sealant always removed completely and a 12-month guarantee.
- Leaking joints around cladding and façade panels
- Plants rooting in failed movement joints
- Joints pointed up with cement by mistake
External mastic for homes and businesses in Dockenfield
Short cuts in external joints show up within a season or two. Overfilled joints, missing backing rod and sealant laid over old sealant rarely last long. We take the old material out and do it properly. If you are dealing with panel joints letting water in and old sealant gone brittle and cracked, we can put it right, on façade panels, brickwork movement joints and joints between brick and frames alike.
Somewhere as small as Dockenfield, 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.
A one-year guarantee comes as standard, so you are not left on your own once the job is done.
- Where
- Dockenfield (GU10)
- Region
- Surrey
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Do you need external mastic in Dockenfield?
Poor preparation causes many early failures: dusty or wet faces, no primer where one was needed, or old sealant left in. The new sealant then lets go long before it should.
Common reasons people contact us are:
- Rain getting behind render or cladding at a joint
- Moss and dirt in joints with no sealant left
- Cracked joints where brick meets render or frames
- Sealant pulling away from one side of the joint
If you let a flat or house near Bentley (Hampshire) station, outside joints that have cracked can let damp into a rental, so check them between lets.
Comparing quotes
- Which colour the sealant will be
- Which sealant they’ll use, and why
- What preparation is included
- Who does the work, and how experienced they are
Quotes for external mastic in Dockenfield
We quote each job individually. These are the things that affect it:
- The number of rooms or windows
- Whether old sealant or filler has to be cut out
- The number and length of the joints
- Whether there’s mould to deal with
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re unsure, phone 0345 464 0079 or email us for an honest opinion and a quote.
Helping us quote
When you call or email, it’s useful to know:
- How many joints, rooms or windows are involved
- Any previous sealing or DIY work
- A few photos by email, if you can
- What’s wrong with the joints now
To get a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. We will give you a clear price before any work starts.
How to look after the new joints
Simple care keeps the joints in good condition. We recommend:
- Show decorators and builders where the movement joints are
- Walk round the building once a year and look at the joints
- Clear growth from the base of walls and joints
- Deal with leaking gutters that soak the joints below
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
Gaps, plants or missing sealant in a joint are worth getting looked at. Early work is quicker and leaves a better finish.
DIY versus a professional finish
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
What we do, step by step
When we arrive, we start by going over the job with you, so there are no surprises. We protect the surfaces around the joints before we start. The work normally takes a few hours for a handful of joints, longer for a whole elevation. Somewhere as small as Dockenfield, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- Mention if the joints have been sealed before
- Mention any tricky access
- Clear the area around the work
Ask for a quote
There’s no standard price list. Instead, we send you a clear quote for your job. To get started, ring 0345 464 0079 or send us an email.
Read more
Surface by surface
Cladding and façade panels
Panels heat up and cool down quickly, so the joint sealant has to cope with frequent movement. The sealant is chosen with that in mind.
Concrete and blockwork
Big joints in concrete need careful depth control. Backing rod sized to the joint sets it and keep the sealant to the right depth.
Landlord and commercial work in Dockenfield
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
External mastic in Dockenfield: local notes
With historic houses such as Farnham Castle (about 4.1 miles north) nearby, there’s older building stock in the area around Dockenfield as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as The Church Of The Good Shepherd, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Dockenfield is about 4 miles south of Farnham, in Surrey. We provide external mastic to homeowners, landlords and businesses in Dockenfield and nearby. 395 places in Surrey are on our list, large and small. There’s also a page for Reading, roughly 21 miles from Dockenfield.
Here we cover the GU10 postcode area for external mastic. If you need external mastic at a property on The Street and Lake Lane or a nearby road, our applicators can take on the job. If you are just outside Dockenfield, we cover Batt's Corner (1 mile north-west), Frithend (1 mile west), Wishanger Common (1 mile south-east), Bucks Horn Oak (1 mile north-west) and Rowledge (2 miles north). Further out, we also cover Guildford (12 miles north-east), Woking (15 miles north-east), Camberley (13 miles north), Farnham (4 miles north), Frimley (11 miles north) and Haslemere (7 miles south-east).
What’s near Dockenfield
The nearest railway station is Bentley (Hampshire) station, roughly 2.4 miles north-west. A little further out are Powderham Castle (4 miles north) and Chase Community Hospital (4.1 miles south-west). For a walk, there’s Farnham Heath.
Dockenfield questions
Do you work for landlords with property near Bentley (Hampshire) station?
Yes, we work for landlords and letting agents. You can ring 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before we start.
Is Dockenfield in your area for external mastic?
Yes. We work across London and the South East, and Dockenfield is part of that. You can ring 0345 464 0079 or drop us an email and let us know what needs doing, and we will give you a clear price.
How long does the job take?
It depends on the size of the job, but most jobs take a few hours for a handful of joints, longer for a whole elevation. We will give you a better idea when we quote.
Can you quote for more than one area?
Yes. Just list everything you need.
How long before the joint can be used?
Cure times vary by product and the conditions. We tell you how long to leave it before we go.
Should I point up the gap in my brickwork?
No, not if it’s a movement joint. Filling it with mortar defeats its purpose and can lead to cracking. We will reseal it with a flexible sealant.
Are you insured?
Yes. We are fully insured.
Is it messy?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we’re done.