Surrey · England
Egham Hythe External Mastic
Professional external mastic in and around Egham Hythe, with old sealant always removed completely and a 12-month guarantee.
- Plants rooting in failed movement joints
- Rigid filler in a joint that should flex
- Rain getting behind render or cladding at a joint
External mastic for homes and businesses in Egham Hythe
Movement joints let brickwork, render and cladding expand and shrink without cracking. Its sealant has to flex with the building, season after season, and when it fails, the wall takes the strain and water finds a way in. If you are dealing with plants rooting in failed movement joints and leaking joints around cladding and façade panels, we can help.
In and around Egham Hythe, older properties sit alongside newer ones, each with its own outside joints. Older gutters and trims need their joints resealed; newer brick and render need their movement joints kept sound.
Each job carries a 12-month guarantee, whatever its size.
- Location
- Egham Hythe (TW18, TW20, TW19)
- Region
- Surrey
- Cover
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Why deal with it now?
Pointing a movement joint with mortar might seem a neat fix, 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. In an older home around Egham Hythe, damp from a failed joint can get into timber and plaster, which is far harder to put right than the sealant itself.
Doing several joints on one visit is generally more efficient than separate visits. We’ll send you a clear quote for the lot.
Why book with us
- Full insurance on every job
- 4.9 on Google from 180+ five-star reviews
- A sealant colour to suit the surroundings
- We leave the area clean and tidy
Common problems we fix in Egham Hythe
Some movement joints have been pointed up with mortar, often by someone who didn’t know what it was for. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
Most people get in touch after spotting one of these:
- Failed seals between different materials
- Movement joints with cracked, split or missing sealant
- Hard, crazed mastic that has stopped moving
- Failed sealant between panels on a façade
For landlords with property near Egham station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
What to look for in a quote
- Who turns up on the day
- Which sealant they’ll use, and why
- What happens if the job turns out different
- Which colour the sealant will be
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
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 fails, we can still redo it.
Towns and villages near Egham Hythe
Also in Egham Hythe
What happens on the day
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours to a few days, depending on the length of joint and the access. In a smaller place like Egham Hythe, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Tell us if parking is tricky
- Let us know if you’ve seen damp or leaks
How to get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Related advice
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Failed render or damaged cladding panels
- Adding movement joints to masonry that has none
If you’re not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer before booking.
Joints and surfaces we work on
- Brickwork movement joints
- Render & cladding joints
- Concrete & block
- Joints between brick and frames
- Façade panels
- Copings & trims
What external mastic looks like in Egham Hythe
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Botleys Mansion (about 3.5 miles south) nearby, there’s older building stock in the area around Egham Hythe as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
For an older house near a landmark such as St Paul's Church, the joints between older walls, newer extensions and the roofline need a sealant that can move. For site and facilities teams at buildings such as Thorpe Lea Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Egham Hythe is about 1 mile east of Egham, in Surrey. From the centre of Egham Hythe to the outskirts, we cover external mastic for every kind of property. We cover 395 towns and villages across Surrey. There’s also a page for London, about 19 miles away.
We work across TW18, TW20 and TW19 for external mastic and the streets around it. You will find streets such as Pond Road, Green Lane and Glebe Road. Egham Hythe is on the A320, which makes it straightforward to reach with everything needed for external mastic. Other places close to Egham Hythe include Staines-upon-Thames (1 mile north-east), Egham (1 mile west), Thorpe (1 mile south), Hythe End (1 mile north-west) and Penton Hook (2 miles south-east). Further out, we also cover Guildford (12 miles south), Woking (8 miles south), Camberley (11 miles south-west), Epsom (13 miles south-east), Ewell (13 miles south-east) and Walton-on-Thames (6 miles south-east).
What’s near Egham Hythe
We work in homes and buildings around The Magna Carta School, The Jolly Farmer Public House and The American School In England. The nearest railway station is Egham station, about 1 mile west of the centre. A little further out are Ashford Hospital (2.7 miles north-east) and Spelthorne Museum (0.8 miles north-east). Open spaces near Egham Hythe include Gracious Pond and St Ann's Hill.
FAQs for Egham Hythe
I let a flat near Egham station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Is Egham Hythe in your area for external mastic?
Yes. We work across London and the South East, and Egham Hythe is part of that. Just ring 0345 464 0079 or drop us an email with a few details of the job.
What do you need from me for a quote?
Let us know what needs doing and where. We’ll ask anything else we need to know.
Do you work at height?
It depends on the building. Where joints can be reached safely, we’ll do them. Tell us about the building and we will confirm what access is needed.
How do I get a quote for external mastic in Egham Hythe?
It depends on the job, so we quote each one individually. For a quick quote, phone 0345 464 0079 or send us an email and let us know what needs doing and where.
Will there be a smell?
Some sealants have a smell while they cure, which fades as it sets. Ventilation helps.
Should I point up the gap in my brickwork?
No, not where the gap is a movement joint. Pointing it stops it working, and the wall may crack nearby. We will reseal it with a flexible sealant.
Can new sealant go over the old?
No, it won’t last. It may look fine at first, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Surface by surface
Render joints
The face of render can be soft, so a low-modulus sealant is kinder to the joint edges. Priming is done where the sealant calls for it.
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.
Landlord and commercial work in Egham Hythe
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
We work for letting agents and landlords as well as householders. Resealing between tenancies is a simple way to keep a property in good order.