Essex · England
Alresford External Mastic
We cover Alresford for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly.
- Joints with sealant missing in places
- Damp patches traced to an open external joint
- Moss and dirt in joints with no sealant left
External mastic in Alresford
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. We pick a colour that sits well with the wall so the joint doesn’t stand out. We work on render & cladding joints, copings & trims and joints between brick and frames, and people most often call us about brick movement joints where the sealant has split and joints pointed up with cement by mistake.
Houses in smaller places like Alresford can stand more in the open than those in a built-up town, so exposed walls and rooflines take more wind-driven rain. Joints on those sides are generally the first to go.
There’s a 12-month guarantee on every job.
- Location
- Alresford (CO7)
- Wider area
- Essex
- Cover
- One year on every job
- Quotes
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Should I try it myself first?
If you are 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 doesn’t work out, we can still put it right.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Outside joints around Alresford
Alresford is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. 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 site and facilities teams at buildings such as Alresford Primary School, larger buildings have long runs of movement joint that eventually need resealing. Homes close to Saint Andrew's Church include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Alresford is about 5 miles south-east of Colchester, in Essex. Anywhere in CO7, we can carry out external mastic at your property. Our area takes in 644 places across Essex, large and small. Chelmsford is on our list too, about 23 miles from Alresford.
Work in CO7 works the same way as everywhere else we cover. You will find streets such as Station Road, Church Road and Cox Road, all of which we cover. Other places close to Alresford include Wivenhoe (2 miles west), Elmstead (2 miles north-west), Wivenhoe Quay (2 miles west), Wivenhoe Cross (2 miles north-west) and High Park Corner (2 miles west). We also work in nearby towns such as Colchester (5 miles north-west), Clacton-on-Sea (8 miles south-east), Harwich (13 miles north-east), Camulodunum (6 miles west), Heybridge (15 miles south-west) and Greenstead (4 miles north-west).
Near you in Alresford
Around Alresford, our work takes us to homes and buildings near The Pointer pub and the streets around them. There’s a railway station in Alresford itself: Alresford station. Nearby you will also find Wivenhoe Chapel Museum (1.5 miles west) and Colchester Castle (4.7 miles north-west). Open spaces near Alresford include Cockaynes Wood.
When it is not the sealant
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cracked brickwork or render that needs a builder or plasterer
- Subsidence or other structural problems
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think.
What we seal
- Concrete & block
- Copings & trims
- Joints between brick and frames
- Render & cladding joints
- Façade panels
- Brickwork movement joints
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Get split or bare joints resealed while the damage is small
- Show decorators and builders where the movement joints are
- Deal with leaking gutters that soak the joints below
- Walk round the building once a year and look at the joints
Look over the joints once a year, ideally after winter. Watch for splits, edges coming away or growth in the joint.
Water getting behind cladding or render can go unnoticed for a long time. By the time there’s a damp patch, the damage can be well established so early resealing is worth it.
Landlords, agents and businesses in Alresford
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
When to call us in Alresford
Buildings move more than people expect. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. The sealant in the movement joints takes that strain.
Most people get in touch after spotting one of these:
- Movement joints with cracked, split or missing sealant
- Damp patches traced to an open external joint
- Sealant that has lost its bond to the brick or render
- Moss and dirt in joints with no sealant left
If you let a flat or house near Alresford station, split movement joints are easy to miss on a rental until damp shows inside.
Before you book anyone
- What preparation is included
- What the cure time is
- Who does the work, and how experienced they are
- Whether they seal over old material or remove it
Why it’s worth doing now in Alresford
Pointing a movement joint with mortar might seem a neat fix, but it stops the joint moving. The wall then cracks somewhere else. The correct repair is a flexible sealant with the right backing. In an older home around Alresford, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all make a difference.
Why us?
- ARBOMaster approved applicator
- Full insurance on every job
- Neat joints and a tidy finish
- Every job guaranteed for a year
Common questions in Alresford
Do you cover smaller places like Alresford?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you help a landlord with a rental near Alresford station?
Yes, we work for letting agents and landlords. Just call 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear quote.
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.
Why is there a gap in my brick wall?
Brickwork, render and cladding all move a little, and planned joints take up that movement. It’s closed with backing rod and a flexible sealant.
How long will you be here?
It depends on the size of the job, but most jobs take a few hours to a few days, depending on the length of joint and the access. We’ll give you a better idea when we quote.
Which products do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
How do you reach high-level joints?
It depends on the building. Where joints can be reached safely, we will do them. Tell us about the building and we will confirm what access is needed.
Should I try DIY first?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
How the visit works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes a few hours for a handful of joints, longer for a whole elevation and we leave things clean and tidy. In a smaller place like Alresford, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- We start by walking round the building and agreeing the joints and the access.
- 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.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
How to prepare
- Clear items away from the joints we are working on
- Mention any tricky access
- Try not to wet indoor joints just before the visit
Getting a quote
If you’re in Alresford and need external mastic, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.