Hampshire · England
External Mastic in Ellingham
Problem with your movement joints in Ellingham? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Hard, crazed mastic that has stopped moving
- Rain getting behind render or cladding at a joint
- Weeds or debris growing in open joints
How we handle external mastic in Ellingham
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a colour to suit. If you have leaking joints around cladding and façade panels and weathered mastic that no longer stretches, we can put it right, whatever the surface.
Around Ellingham, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points.
There’s a 12-month guarantee on every job.
- Location
- Ellingham (BH24)
- Region
- Hampshire
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Ellingham: your questions answered
Is Ellingham within the area you cover?
Yes. Ellingham is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is there a guarantee on external mastic in Ellingham?
All our work, in Ellingham and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Do you seal joints where cladding meets other materials?
Yes. Different materials move at different rates, so a flexible sealant is needed where they meet. We choose one that suits both surfaces.
Should I point up the gap in my brickwork?
No. Rigid materials can’t move with the wall. Where a joint has been mortared, it can often be raked out and sealed properly.
Can you reach joints on upper floors?
It depends on the building. Send us pictures and a rough idea of the height.
Do you have insurance?
Yes. We’re fully insured, and we’ve been doing sealant work for more than 20 years.
Why do you put foam in the joint first?
That’s backing rod, a closed-cell foam. It stops the sealant going in too deep and bonding to three sides, which would stop it stretching.
Is there any odour?
Sometimes, a little. Any smell clears as the sealant cures.
How we quote for external mastic
We don’t publish a price list, because no two jobs are the same. What we look at:
- How much old sealant there is and how hard it is to remove
- How easy the joints are to reach
- Working hours on commercial sites
- Mould in or behind the old joints
What it costs depends on the size of the job, how much old material has to come out and access to the work. You will have a clear quote before any work starts, so you know where you stand.
Asking for a quote
Photos by email are helpful but not essential. Please mention:
- If it’s domestic, commercial or a hotel
- A few photos by email, if you can
- The address or postcode of the job
- Any previous sealing or DIY work
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we’ll talk you through the work.
Can I do it myself?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
How the job changes by surface
Copings and trims
Metal and stone copings both move with temperature, so a flexible sealant suits them best year round.
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. We seal the joint with a flexible exterior sealant.
Ellingham buildings and the weather
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In the older streets around Church of St Mary and All Saints, an extension built onto an older house moves differently, and the joint between them takes the strain.
Ellingham is in Hampshire. Jobs in Ellingham get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Across Hampshire, we cover 683 places, Ellingham among them. Southampton is on our list too, around 18 miles away.
Here we cover the BH24 postcode area for external mastic. We also cover Blashford (1 mile south-east), Ibsley (1 mile north-east), Rockford (1 mile east), Harbridge (1 mile north) and Mockbeggar (1 mile north-east). We also work in nearby towns such as Totton (13 miles east), Lymington (13 miles south-east), New Milton (10 miles south-east), Barton on Sea (11 miles south-east), Marchwood (15 miles east) and Ashley (10 miles south-east).
Local landmarks in Ellingham
Around Ellingham, our work takes us to homes and buildings near The Old Beams Inn, among other places. Other landmarks nearby include Fordingbridge Doll Museum (3.8 miles north) and St Leonard's Hospital (4.6 miles south-west). Open spaces near Ellingham include Linbrook Lake and Blashford Lakes.
Other services in Ellingham
When to call us in Ellingham
Buildings move more than people expect. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. All of that ends up in the joint sealant.
These are the problems we’re asked about most:
- Leaking joints around cladding and façade panels
- Rain getting behind render or cladding at a joint
- Joints with sealant missing in places
- Sealant that has lost its bond to the brick or render
Schools such as Ringwood School Academy are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
What your quote should include
- How the joint is cleaned and prepared
- What the cure time is
- The length of the guarantee
- Whether the sealant suits the joint
Looking after it afterwards
Aftercare is simple:
- Keep movement joints as flexible joints, not mortar
- Do not let climbing plants root in the sealant
- Keep water from gutters off the wall
- Ask before painting over external sealant
Look over the joints once a year, ideally after winter. Splits, gaps at the edges or plants in the joint are early warning signs.
A joint that has stopped moving pushes the movement elsewhere, generally as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
How it works
The work is kept neat and contained to the area we are working on, so you can get on with your day. The job normally takes a few hours for a handful of joints, longer for a whole elevation. In a small place like Ellingham, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- 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.
Preparing for the visit
- Keep pets and children clear of the area while we work
- Let us know about earlier repairs to the joints
- Let us know if you’ve seen damp or leaks
Getting a quote
We don’t publish a price list. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or drop us an email.
Read more
Why act early in Ellingham
Sealing over the top of old mastic doesn’t hold for long. The new layer cannot bond properly to old, weathered material, so we always take the old sealant out. Where a wall is exposed, as many are in small places like Ellingham, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
What you get with us
- A choice of colours where the product allows
- Approved under the ARBOMaster scheme
- We’re fully insured
- Homes, businesses and hotels