Hampshire · England
External Mastic in Sarisbury
Our applicators work in Sarisbury on sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Joints pointed up with cement by mistake
- Movement joints with cracked, split or missing sealant
- Water getting into walls through failed joints
Why deal with it now?
It often makes sense to reseal all the failing joints on an elevation together. Joints of the same age tend to fail together and it means sorting access once. Homes in smaller places like Sarisbury can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part.
Why us?
- Full insurance on every job
- Colour picked to suit the job
- White, clear, grey or another colour, product permitting
- You choose the colour before work begins
External mastic in Sarisbury, done properly
On houses, flats and commercial buildings across Sarisbury, we reseal joints in brickwork, render, cladding and façade panels. Every joint gets the same careful preparation: clean joint faces and the right depth. If you have plants rooting in failed movement joints and rigid filler in a joint that should flex, we can help.
Outbuildings, garages and conservatories around homes in places like Sarisbury add more joints to look after. Leaks generally start at a gutter end, a garage door frame or where an extension meets the house.
All of our work is guaranteed for twelve months, in Sarisbury and everywhere else we cover.
- Place
- Sarisbury (SO31)
- Region
- Hampshire
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Walls and rooflines in Sarisbury
Sarisbury 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. That is hard on movement joints and outside wall joints, especially on the side facing the sea. Rainfall in the South East is lower than in much 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 Sarisbury Church of England Junior School, larger buildings have long runs of movement joint that eventually need resealing. For landlords with property near Swanwick station, outside joints that have cracked can let damp into a rental, so check them between lets. In the older streets around Church of St Paul, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Sarisbury is about 3 miles south of Hedge End, in Hampshire. Every kind of property in Sarisbury is covered for external mastic, old or new, large or small. The work is guaranteed for a year. Our Hampshire coverage runs to 683 places, Sarisbury among them. We also work in Southampton, around 6 miles away.
We cover every part of SO31 for external mastic and the streets around it. If you need external mastic at a property on Woodlands Close, Bridge Road and Painswick Close or anywhere close by, our applicators can take on the job. We also cover the places around Sarisbury: Swanwick (1 mile north-west), Park Gate (1 mile east), Sarisbury Green (1 mile south-west), Locks Heath (1 mile south-east) and Lower Swanwick (1 mile north-west). Further out, we also cover Winchester (13 miles north), Gosport (7 miles south-east), Havant (13 miles east), Eastleigh (7 miles north-west), Fareham (4 miles east) and Horndean (12 miles east).
Landmarks near Sarisbury
Around Sarisbury, our work takes us to homes and buildings near Brookfield Community School and Language College and The Old Ship Inn. For rail, the closest station is Swanwick station, about 0.7 miles east. Other landmarks nearby include Coldeast (under half a mile south) and Bursledon Brickworks Industrial Museum (1 mile north). Not far away are Swanwick Lakes.
Aftercare tips
So the new joints stay in good condition:
- Leave the joints unpainted unless we have said otherwise
- Clear growth from the base of walls and joints
- Keep water from gutters off the wall
- Show decorators and builders where the movement joints are
Avoid pressure-washing straight into the joints. A strong jet can damage the edges of the bead.
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.
Work for landlords, hotels and businesses
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
When it is not the sealant
We’d rather tell you now than do work that won’t last, so these are the limits:
- Walls that need new movement joints cut into them
- Failed render or damaged cladding panels
- Rising or penetrating damp from elsewhere in the wall
If you are not sure, just phone 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Where we work in Sarisbury
- Joints between brick and frames
- Façade panels
- Copings & trims
- Concrete & block
- Brickwork movement joints
- Render & cladding joints
Also near Sarisbury
Also in Sarisbury
What affects the cost of external mastic
The price is agreed before any work begins. It’s based on:
- How many areas need sealing
- The old material and how stubborn it is
- Any mould that needs treating
- The amount of work
Leaving a failed joint normally makes the job bigger, not smaller, as water and mould keep getting in. If you’re unsure, ring 0345 464 0079 or email us for an honest opinion and a quote.
Helping us quote
Before you ask for a quote, have a think about:
- Roughly how big the job is
- Photos by email, if that is easy
- Where the property is
- If it’s domestic, commercial or a hotel
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Questions from Sarisbury
Is external mastic in a coastal place like Sarisbury any different?
Coastal homes put outside sealant through more weather than inland ones, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Will you come out to Sarisbury?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
How long does the job take?
It depends on the size of the job, but as a guide it takes anything from a few hours to several days, depending on the building. We’ll give you a better idea when we quote.
Should I point up the gap in my brickwork?
No. Rigid materials can’t move with the wall, so the joint stops doing its job. If it has already been filled, we can usually cut it out and reseal it.
Is it worth trying it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. If it doesn’t work out, we can redo it.
Will the new joint stand out?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We choose the closest to your brick or render so it doesn’t stand out.
How often do external joints need resealing?
It depends on the exposure, the movement and the product. Sealant is a maintenance item, so check the joints once a year and reseal when it splits.
Can you reach joints on upper floors?
That depends on the building and the joints. Where joints can be reached safely, we’ll do them. Tell us about the building and we’ll confirm what access is needed.
DIY sealant or a professional job?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.
What we do, step by step
We bring everything the job needs with us, so you don’t need to buy or prepare anything. Once we’ve agreed what’s being done, the area is protected and the work begins. Most jobs take a few hours to a few days, depending on the length of joint and the access. A visit to Sarisbury is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- 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.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Clear the area around the work
- Plan for the work area to be out of bounds to pets and children
Get a quote
Every job is quoted individually, so the first step is telling us about yours. Simply call 0345 464 0079 or email us and describe the job and send photos if you have them.