Hampshire · England
Martyr Worthy External Mastic
Our applicators work in Martyr Worthy on sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly.
- Sealant that has lost its bond to the brick or render
- Brick movement joints where the sealant has split
- Movement joints filled with mortar instead of sealant
When something else is needed
We’ll always be straight with you, so here’s what new sealant will not do:
- Cracks in the bricks or render themselves, away from the joints
- Loose or hollow render, which needs re-rendering
- Subsidence or other structural problems
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly before booking.
What we seal
- Brickwork movement joints
- Joints between brick and frames
- Façade panels
- Copings & trims
- Render & cladding joints
- Concrete & block
External mastic for homes and businesses in Martyr Worthy
A movement joint is only as good as its depth. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, so it bonds to the two sides only and can stretch. We work on façade panels, brickwork movement joints and joints between brick and frames, and the jobs we see most are plants rooting in failed movement joints and joints pointed up with cement by mistake.
Older homes in small places like Martyr Worthy may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
Every job is covered by a 12-month guarantee, wherever you are in Hampshire.
- Place
- Martyr Worthy (SO21)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Leave it or put it right?
Running new sealant over the old bead rarely lasts. New sealant doesn’t bond well to old, weathered sealant, so we always take the old sealant out. Where a wall is exposed, as many are in small places like Martyr Worthy, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
What it costs depends on the amount of work, how hard the old material is to remove and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
Why Martyr Worthy clients choose us
- ARBOMaster approved applicator
- You choose the colour before work begins
- White, clear, grey or another colour, product permitting
- Over 20 years’ experience
Take a look at what affects the cost and customer reviews.
For landlords and businesses
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
For anyone letting property in or around Martyr Worthy, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
DIY versus a professional finish
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, then guaranteed for a year.
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly.
External mastic in Martyr Worthy: local notes
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you look after a building such as Itchen Abbas Primary School, larger buildings have long runs of movement joint that eventually need resealing. If you live in an older home near Church of St Swithin, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Martyr Worthy is about 4 miles north-east of Winchester, in Hampshire. Martyr Worthy gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. 683 places in Hampshire are on our list. Southampton is on our list too, around 14 miles away.
We cover every part of the SO21 postcode area for external mastic and the streets around it. That includes homes and businesses on Chilland Lane and Bridgetts Lane. If you are just outside Martyr Worthy, we cover Itchen Abbas (1 mile east), Easton (1 mile south-west), Abbots Worthy (2 miles west), Itchen Stoke (2 miles east) and Kings Worthy (2 miles west). Further out, we also cover Basingstoke (13 miles north-east), Winchester (4 miles south-west), Eastleigh (10 miles south-west), Andover (13 miles north-west), Chandler's Ford (10 miles south-west) and Alton (13 miles east).
Near you in Martyr Worthy
In Martyr Worthy, that means homes and buildings near The Plough pub, among other places. Martyr Worthy’s nearest station is Winchester station, about 3.5 miles south-west of the centre. Well-known places in the area include Wolvesey Castle (3.5 miles south-west) and Royal Observer Corps Museum (2.8 miles south-west). For a walk, there’s Winnall Moors and Twyford Down.
Places near Martyr Worthy
More services for Martyr Worthy
How we quote for external mastic
We quote each job individually. This is what makes a difference:
- The product the joint needs
- How many areas need sealing
- The size of the job
- Access and height
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
What we need to know
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- If it’s domestic, commercial or a hotel
- Any access issues, like height or stairs
- If someone has resealed it before
- How many joints, rooms or windows are involved
To get a quote, call 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. You will have a clear quote before any work starts.
Martyr Worthy: your questions answered
Can you do external mastic in Martyr Worthy?
Yes. Our work covers London and the South East, and Martyr Worthy is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job.
Do you cover smaller places like Martyr Worthy?
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.
Why is there a gap in my brick wall?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It’s sealed with a flexible sealant, not mortar.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.
When is the sealant fully cured?
Different products cure at different speeds, so please follow the time we give you when we finish.
What should I tell you?
The location, the problem and the rough size of the job. If you can, email a few photos.
How long will you be here?
A typical job takes anything from a few hours to several days, depending on the building, including preparation and clearing up. Your quote will say how long we expect yours to take.
Do you work for letting agents?
Yes, regularly. Several properties can go on one quote, and between tenancies is a good time for the work.
What we do, step by step
Before we leave, we go over the finished joints with you and explain the cure time. The visit itself generally takes a few hours to a few days, depending on the length of joint and the access, depending on the size of the job. Somewhere as small as Martyr Worthy, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Tell us if parking is tricky
- Move anything stored near the joints
Get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that’s easy.
Advice
When to call us in Martyr Worthy
Weeds, moss and debris in a joint are a sign the sealant has gone. Roots and dirt hold water against the wall and speed up the damage.
Any of these means the joints need attention:
- Movement joints with cracked, split or missing sealant
- Sealant that has lost its bond to the brick or render
- Leaking joints around cladding and façade panels
- Hard, crazed mastic that has stopped moving
Letting a property close to Winchester station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
What your quote should include
- Whether they’re fully insured
- What guarantee comes with the work
- Which colour the sealant will be
- What the quote includes, VAT included or not