Hampshire · England
External & façade joints in Steep Marsh, Hampshire
We cover Steep Marsh for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Joints with sealant missing in places
- Hard, crazed mastic that has stopped moving
- Water getting into walls through failed joints
How we handle external mastic in Steep Marsh
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. The colour is chosen to suit the brick or render so the joint doesn’t stand out. Common call-outs are for plants rooting in failed movement joints and damp patches traced to an open external joint, across joints between brick and frames, façade panels and render & cladding joints.
External sealant needs dry, clean surfaces, so work around Steep Marsh is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
All of our work is guaranteed for twelve months.
- Location
- Steep Marsh (GU32)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Landlord and commercial work in Steep Marsh
Housing providers, facilities teams and property managers book us too in Steep Marsh and across Hampshire. We can quote a run of properties together.
We work for landlords and agents as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
Steep Marsh buildings and the weather
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For site and facilities teams at buildings such as Steep Church of England Voluntary Controlled Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. For an older house near a landmark such as Church of All Saints, an extension built onto an older house moves differently, and the joint between them takes the strain. Letting a property close to Petersfield station? Then split movement joints are easy to miss on a rental until damp shows inside.
Steep Marsh is about 2 miles north of Petersfield, in Hampshire. We provide external mastic to homes and businesses in Steep Marsh and the surrounding area. Across Hampshire, we cover 683 places, Steep Marsh among them. You can also see our page for Portsmouth, roughly 17 miles from Steep Marsh.
Jobs for external mastic in GU32 is quoted and booked the same way as anywhere else. Neighbouring places we cover for external mastic include Steep (1 mile south), Oakshott (1 mile north), Sheet (1 mile south-east), Petersfield (2 miles south) and Hawkley (2 miles north). Within a short drive, we also cover Havant (12 miles south), Horndean (9 miles south), Alton (8 miles north), Waterlooville (11 miles south), Purbrook (12 miles south) and Bordon (7 miles north-east).
Local landmarks in Steep Marsh
We work in homes and buildings around The Cricketers Inn and The Petersfield School and the streets around them. The nearest railway station is Petersfield station, roughly 1.7 miles south of the centre. Nearby you will also find Bear Museum (2 miles south) and Petersfield Community Hospital (1.8 miles south). Open spaces near Steep Marsh include Wheatham Hill and Liss Riverside Railway Walk South.
Questions from Steep Marsh
Do you cover Steep Marsh for external mastic?
Yes, Steep Marsh is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or drop us an email and let us know what needs doing.
Will you come out to Steep Marsh?
Yes, Steep Marsh is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
How long does external mastic take?
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.
Do you work for landlords and businesses?
Yes. We work for householders, landlords, letting agents, businesses and hotels across Hampshire.
Is there any odour?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do. We can talk about working times when we quote.
Where do you work from?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
What’s an expansion joint in brickwork?
Walls move with heat, cold and moisture, so long walls have planned gaps to take that movement. The gap is sealed with a flexible sealant over backing rod.
What affects the quote in Steep Marsh
You’ll get a clear quote before we start. It takes into account:
- When we can work, for business premises
- The number of rooms or windows
- The product the joint needs
- Access and height
Doing several joints on one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
What we need to know
To help us quote quickly, please include:
- Pictures of the joints, sent by email
- If it’s domestic, commercial or a hotel
- The rough size of the job
- Any access issues, like height or stairs
For external mastic in Steep Marsh, ring 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
When it is not the sealant
New sealant can’t fix everything, and we’d rather say so up front. Sealant will not put right:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Walls that need new movement joints cut into them
- Movement that is more than a sealant joint can take
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly before you book.
What we seal
- Render & cladding joints
- Copings & trims
- Concrete & block
- Joints between brick and frames
- Brickwork movement joints
- Façade panels
Aftercare tips
Simple care keeps the joints in good condition. We recommend:
- Tell anyone working on the walls about the movement joints
- Walk round the building once a year and look at the joints
- Never let anyone fill a movement joint with mortar
- Have failed joints looked at early
Keep pressure washers away from the sealant. High-pressure water can lift the edges and let water in behind.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick.
How it works
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes anything from a few hours to several days, depending on the building and we leave things clean and tidy. Somewhere as small as Steep Marsh, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Keep children and pets away from the work area
- Mention any sign-in or site rules at work premises
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
Read more
Why act early in Steep Marsh
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. In a small place like Steep Marsh, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or send us an email.
Why choose Mr Mastic in Steep Marsh
- Approved under the ARBOMaster scheme
- More than 20 years in sealant work
- We never seal over old sealant
- Trusted Arbo and Everbuild sealants
Towns and villages near Steep Marsh
What else we do in Steep Marsh
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
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.