Hampshire · England
External & façade joints in Damerham, Hampshire
External mastic in Damerham from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Hard, crazed mastic that has stopped moving
- Joints pointed up with cement by mistake
- Weeds or debris growing in open joints
Why act early in Damerham
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. Older cottages and farmhouses around Damerham can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Why us?
- Old sealant always removed completely
- You choose the colour before work begins
- A choice of colours where the product allows
- Fully insured
Read our cost guide or our reviews.
External mastic for homes and businesses in Damerham
External mastic is a job where short cuts show quickly. New sealant over old, joints packed with mortar and beads with no backing all tend to fail early. We take the old material out and do it properly. If you’re dealing with hard, crazed mastic that has stopped moving and joints with sealant missing in places, we can put it right, on render & cladding joints, façade panels and copings & trims alike.
In a village or hamlet like Damerham, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
Big or small, it’s backed by our 12-month guarantee in Damerham and across Hampshire.
- Place
- Damerham (SP6)
- Region
- Hampshire
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What happens on the day
There is not much for you to do on the day. Point us to the joints and we’ll get on with it. The work itself takes anything from a few hours to several days, depending on the building from start to finish. For a village or hamlet like Damerham, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- We cut out the failed sealant and rake out any dirt or growth.
- The joint faces are cleaned and primed where the sealant needs it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Getting ready for the visit
- Mention if the joints have been sealed before
- Let us know if you’ve seen damp or leaks
- Move anything stored near the joints
How to get a quote
For a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We’ll send you a clear quote before any work starts.
Advice
Honest limits
Before you book, it’s worth knowing the limits:
- Adding movement joints to masonry that has none
- Damp that isn’t coming from the joint
- Subsidence or other structural problems
If you are not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer.
Joints and surfaces we work on
- Render & cladding joints
- Façade panels
- Joints between brick and frames
- Brickwork movement joints
- Concrete & block
- Copings & trims
What affects the quote in Damerham
Jobs vary more than people expect. The main factors:
- Whether old sealant or filler has to be cut out
- How easy the joints are to reach
- How many areas need sealing
- Any working-time requirements on site
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Call for a quick quote and we’ll explain what it covers.
What to tell us for a quote
You don’t need to know the technical terms. It helps if you can tell us:
- Photos by email, if that’s easy
- Whether it has been sealed before
- Whether it’s a home or a business
- Where the job is, and your postcode
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will explain what’s involved.
For landlords and businesses
For anyone letting property in or around Damerham, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
Housing providers, facilities teams and property managers book us too in Damerham and across Hampshire. Several sites can be quoted together, and we are fully insured.
Towns and villages near Damerham
What else we do in Damerham
How the job changes by surface
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. A flexible sealant bridges the two so neither cracks the other.
Cladding and façade panels
If the façade has a specified sealant, that’s what we use. Tell us what the building has when you get in touch.
DIY versus a professional finish
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
What external mastic looks like in Damerham
Historic houses like Breamore House (about 3.5 miles north-east) are a reminder that the area around Damerham has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. 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.
Around Damerham, as everywhere, external mastic is only as good as the preparation behind it. For an older house near a landmark such as Church of St George, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Damerham is in Hampshire. Anywhere in SP6, we can carry out external mastic at your property. Our area takes in 683 places across Hampshire. We also work in Southampton, about 20 miles from Damerham.
Postcode districts we cover here for external mastic: SP6. External mastic is available to properties on High Street, Green Close and Mill End and the roads around them. If you’re just outside Damerham, we cover Sandleheath (1 mile south-east), Rockbourne (2 miles north), Broxhill (2 miles south), Ashford (2 miles south-east) and Alderholt (2 miles south-east). Within a short drive, we also cover Totton (15 miles east), New Milton (15 miles south-east), Ringwood (7 miles south-east), Fordingbridge (3 miles east), St Leonards (8 miles south) and Brockenhurst (15 miles south-east).
What’s near Damerham
Other landmarks nearby include Fordingbridge Museum (2.9 miles east) and Cranborne Castle Hill (3.5 miles south-west).
Damerham questions
Is Damerham within the area you cover?
Yes, Damerham is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Is there a guarantee on external mastic in Damerham?
All our work, in Damerham and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
How do you reach high-level joints?
That depends on how high the joints are and the ground below. Ground-floor joints are simple; for higher work, tell us about the building and we will confirm what’s needed.
Should I try DIY first?
You can, for simple jobs. 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.
Where are you based?
Mr Mastic is based in Crawley. We cover Damerham and the rest of Hampshire.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned before resealing.
Do you work for landlords and businesses?
Yes. We work for homeowners, landlords, letting agents, businesses and hotels in Damerham.
Why do you put foam in the joint first?
Backing rod goes into deeper joints as a matter of course. It controls the depth and stops the sealant bonding to the back, so the joint can move.