Hampshire · England
External Mastic in Thorns Beach
Sealing brickwork movement joints, render, cladding and façade joints for Thorns Beach, backed by a 12-month guarantee. Call for a quick quote.
- Joints where the bead has come unstuck
- Damp patches traced to an open external joint
- Brick movement joints where the sealant has split
External mastic for homes and businesses in Thorns Beach
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 in a colour to suit. If you have failed seals between different materials and joints with sealant missing in places, we can help, whatever the surface.
Older homes in small places like Thorns Beach may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water generally gets in, and they need the right sealant at the right depth.
We guarantee the work for a year. If something is not right with it in that time, tell us and we’ll put it right.
- Location
- Thorns Beach (SO42)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Landlord and commercial work in Thorns Beach
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
How we quote for external mastic
The quote reflects the job in front of us. We take into account:
- The number and length of the joints
- Mould in or behind the old joints
- Whether the work is at height
- Any working-time requirements on site
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before work begins, so you know where you stand.
Helping us quote
To make quoting easier, let us know:
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
- Access, such as stairs, a lift or height
- Pictures of the joints, sent by email
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work before giving you a price.
Common problems we fix in Thorns Beach
Sunlight, wet weather and frost wear exterior sealant down. Over the years it hardens, cracks on the surface and loses its give, so the joint eventually tears or comes away from one side.
Most people get in touch when they notice one of these:
- Moss and dirt in joints with no sealant left
- Gaps where render, brick and frames meet
- Movement joints filled with mortar instead of sealant
- Weathered mastic that no longer stretches
Beaulieu Palace House, about 3.8 miles north, is one of the historic houses in the wider area around Thorns Beach, and older homes nearby need a sealant that suits their walls.
Before booking anyone
- What the cure time is
- How the joint is cleaned and prepared
- Is the old sealant removed completely?
- Are they insured?
Walls and rooflines in Thorns Beach
Thorns Beach is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. With historic houses such as Beaulieu Palace House (about 3.8 miles north) nearby, there’s older building stock in the area around Thorns Beach as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
Letting a property close to Lymington Pier station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Thorns Beach is about 5 miles east of Lymington, in Hampshire. Our applicators cover external mastic for homes and businesses in Thorns Beach. Thorns Beach is one of 683 towns and villages in Hampshire where we work. There’s also a page for Southampton, about 11 miles away.
Work in SO42 works the same way as everywhere else we cover. We also cover East End (2 miles west), Norleywood (3 miles west), Hamstead (3 miles south), Cranmore (4 miles south) and Bouldnor (4 miles south). Further out, we also cover Gosport (13 miles east), Eastleigh (15 miles north), Fareham (12 miles north-east), Totton (11 miles north), Chandler's Ford (15 miles north) and Hedge End (12 miles north-east).
Local landmarks in Thorns Beach
For rail, the closest station is Lymington Pier station, roughly 3.9 miles west. Well-known places in the area include Yarmouth Castle (4.8 miles south-west) and Beaulieu Abbey And Display Of Monastic Life (4 miles north). Not far away are Boldre Foreshore.
Should I try it myself first?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
What else we do in Thorns Beach
Thorns Beach: your questions answered
Is external mastic in a coastal place like Thorns Beach any different?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Can you help a landlord with a rental near Lymington Pier station?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Do you use backing rod?
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.
Can I do it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Is there a guarantee?
Yes. All our work carries a 12-month guarantee.
How much does external mastic cost in Thorns Beach?
Size, access and the old material all affect the cost. Ask us for a quote and we’ll talk you through it.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us, and we’re fully insured.
How long does the job take?
A typical job takes a few hours to a few days, depending on the length of joint and the access, including preparation and clearing up. Your quote will say how long we expect yours to take.
How it works
The work is kept neat and contained to the joints we are treating, so you can get on with your day. The job generally takes anything from a few hours to several days, depending on the building, and we tell you how long to leave it before we go. In a small place like Thorns Beach, access is usually 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.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
How to prepare
- Where the joints are inside, avoid wetting them before we arrive
- On commercial sites, let us know about site rules
- Clear the area around the work
Get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. Whenever you are ready, call 0345 464 0079 or drop us an email.
Related advice
Why deal with it now?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That matters on brick, render and concrete, which can be weaker at the face. Too stiff a sealant can pull at the edges and break them. Where a wall is exposed, as many are in small places like Thorns Beach, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we will go through it with you.
Why choose Mr Mastic in Thorns Beach
- A choice of colours where the product allows
- We leave the area clean and tidy
- A sealant colour to suit the surroundings
- More than 20 years in sealant work
Take a look at what affects the cost or our reviews.
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Keep movement joints as flexible joints, not mortar
- Act on the first splits you see
- Keep water from gutters off the wall
- Check the sealant is paintable before painting near it
Make sure anyone working on the wall later knows where the movement joints are. They should be kept open and resealed, not filled.
A joint that has stopped moving pushes the movement elsewhere, normally as cracking in the brickwork or render nearby. Resealing it early helps prevent that.