Hampshire · England
External Mastic in Ramsdean
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Ramsdean and across Hampshire. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Damp patches traced to an open external joint
- Old sealant gone brittle and cracked
- Moss and dirt in joints with no sealant left
The process
Before we leave, we go over the finished joints with you. The work normally takes a few hours for a handful of joints, longer for a whole elevation, depending on the size of the job. Somewhere as small as Ramsdean, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- 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.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know about parking restrictions
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
Want a quote for external mastic? Please call 0345 464 0079 or send us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Related advice
External mastic for homes and businesses in Ramsdean
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product. We work on façade panels, copings & trims and brickwork movement joints, and common reasons people get in touch are gaps where render, brick and frames meet and weathered mastic that no longer stretches.
Outside joints can only be sealed when they’re dry, so work in Ramsdean is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
Every job comes with our 12-month guarantee.
- Where
- Ramsdean (GU32)
- Region
- Hampshire
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Quotes for external mastic in Ramsdean
The quote reflects the job in front of us. We look at:
- Mould in or behind the old joints
- The product the joint needs
- When we can work, for business premises
- Whether the work is at height
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
What we need to know
You do not need to know the technical terms. Just tell us:
- The problem you’ve noticed
- Where the property is
- Pictures of the joints, sent by email
- How we’d reach the joints
For a quote, call 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We will give you a clear price before any work starts.
Signs you need external mastic in Ramsdean
Many joints fail because they were sealed too deep or with nothing behind them. If the sealant sticks to the back as well as the sides, it cannot stretch and tears as soon as the joint widens.
The most common problems we see are:
- Joints where the bead has come unstuck
- Panel joints letting water in
- Rain getting behind render or cladding at a joint
- Plants rooting in failed movement joints
If you let a flat or house near Petersfield station, outside joints that have cracked can let damp into a rental, so check them between lets.
Comparing quotes
- When the joint can take water or movement
- Whether you can choose the colour
- What product goes in the joint
- The length of the guarantee
Work for landlords, hotels and businesses
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Why deal with it now?
Mortar or ordinary filler might look like a quick way to close an open joint, but it locks the joint solid. The movement then cracks the brickwork or render nearby. The correct repair is a flexible sealant with the right backing. Where a wall is exposed, as many are in small places like Ramsdean, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Doing several joints on one visit normally makes better use of the time than several visits, so tell us about everything that needs sealing. We’ll send you a clear quote for the lot.
Why book with us
- Quality sealants from Arbo and Everbuild
- Homes, businesses and hotels
- A choice of colours where the product allows
- Approved under the ARBOMaster scheme
Read our cost guide and our reviews.
Nearby places to Ramsdean
Also in Ramsdean
When something else is needed
A few problems are outside what sealant work can do:
- Damp that isn’t coming from the joint
- Adding movement joints to masonry that has none
- Render that’s blown, hollow or coming away
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
Joints and surfaces we work on
- Concrete & block
- Render & cladding joints
- Joints between brick and frames
- Façade panels
- Copings & trims
- Brickwork movement joints
Can I do it myself?
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so just mention it when you contact us.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Ramsdean: your questions answered
Can you do external mastic in Ramsdean?
Yes. We work across London and the South East, and Ramsdean is part of that. Just call 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear price.
Do you work for landlords with property near Petersfield station?
Yes. We work for landlords and letting agents as well as householders. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Can you reach joints on upper floors?
It depends on the building. We work on joints that can be reached safely. Give us some details and we’ll confirm the access.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Is there any odour?
There can be a smell while the sealant cures, which fades as it sets. Opening a window helps.
How long does external mastic take?
It depends on the size of the job, but as a guide it takes a few hours for a handful of joints, longer for a whole elevation. We’ll tell you when we quote.
What is backing rod for?
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 bead can stretch.
External mastic in Ramsdean: local notes
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.
If you look after a building such as Langrish Primary School, its movement joints, gutters and trims need looking after like any other building’s. Homes close to Church of St John the Evangelist include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Ramsdean is about 2 miles west of Petersfield, in Hampshire. Jobs in Ramsdean get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Ramsdean is one of 683 towns and villages in Hampshire we cover for external mastic. You can also see our page for Portsmouth, about 13 miles away.
Every address in GU32 is within our area for external mastic. We also cover Weston (1 mile east), Buriton (2 miles south-east), Nursted (3 miles east), Chalton (4 miles south) and Blendworth (5 miles south). Larger places within reach include Winchester (15 miles west), Gosport (15 miles south-west), Havant (9 miles south), Fareham (13 miles south-west), Horndean (6 miles south) and Alton (11 miles north).
What’s near Ramsdean
In Ramsdean, that means homes and buildings near The Petersfield School. For rail, the closest station is Petersfield station, roughly 2.3 miles east of the centre. Well-known places in the area include Clanfield Earthwork (3.3 miles south) and Bear Museum (2.5 miles east). Green spaces nearby include Pidham Hill.