Surrey · England
External Mastic in Wentworth
Professional external mastic in and around Wentworth, with every bit of old sealant taken out first.
- Joints pointed up with cement by mistake
- Rain getting behind render or cladding at a joint
- Gaps where render, brick and frames meet
External mastic in Wentworth
Low-level joints can normally be done from the ground. For joints higher up, give us some details of the building and we’ll confirm what’s needed to reach them safely. If you have gaps where render, brick and frames meet and rain getting behind render or cladding at a joint, we can put it right, on render & cladding joints, joints between brick and frames and concrete & block alike.
Older homes in small places like Wentworth may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
Our work is backed for twelve months.
- Where
- Wentworth (GU25)
- Wider area
- Surrey
- Cover
- One year on every job
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
How we quote for external mastic
There’s no set price list, because no two jobs are the same. What we look at:
- The number of rooms or windows
- Whether there’s mould to deal with
- The size of the job
- Whether old sealant or filler has to be cut out
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are not sure whether it needs doing, call 0345 464 0079 or send us an email for an honest opinion and a quote.
What to tell us for a quote
When you call or email, it’s useful to know:
- Roughly how big the job is
- Photos by email, if that is easy
- If it’s domestic, commercial or a hotel
- If someone has resealed it before
There’s no standard price list. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or email us.
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
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.
Landlord and commercial work in Wentworth
Hotels need rooms back in use, so we plan the work room by room. We have worked in hotels as well as homes and businesses.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
How the visit works
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The work itself takes anything from a few hours to several days, depending on the building, including the tidy-up. For a village or hamlet like Wentworth, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Mention any parking rules near the property
- Mention any tricky access
- Let us know if you’ve seen damp or leaks
Getting a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you are ready, call 0345 464 0079 or send us an email.
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Wentworth buildings and the weather
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Botleys Mansion (about 3.1 miles south-east) are a reminder that the area around Wentworth has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
For an older house near a landmark such as Christ Church, old and new materials meet at the roofline and walls, which is where sealant earns its keep. Managing a site like Christ Church CofE Aided Infant School? Then larger buildings have long runs of movement joint that eventually need resealing.
Wentworth is about 3 miles south-west of Egham, in Surrey. From the centre of Wentworth to the outskirts, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Wentworth is one of 395 places in Surrey where we work. Our Reading page covers work nearby (17 miles or so).
Postcode districts we cover here for external mastic: GU25. Local streets include London Road, Wentworth Drive and Portnall Rise, all of which we cover. Neighbouring places we cover for external mastic include Virginia Water (1 mile east), Egham Wick (2 miles north), Stroude (2 miles north-east), Thorpe Green (2 miles east) and Englefield Green (2 miles north-east). We also work in nearby towns such as Guildford (11 miles south), Woking (6 miles south), Camberley (7 miles south-west), Epsom (15 miles east), Ewell (15 miles east) and Egham (3 miles north-east).
Near you in Wentworth
In Wentworth, that means homes and buildings near Riverside Walk. The nearest railway station is Longcross station, about 1 mile south. Other landmarks nearby include St. Peter's Hospital (3.3 miles south-east) and Chobham Museum (3.7 miles south). The countryside around Wentworth includes Gracious Pond and St Ann's Hill.
Common problems we fix in Wentworth
Joints sealed without backing rod, or far too deep, rarely last. Sealant bonded to three sides has nowhere to go and rips as the joint opens.
Look out for any of the following:
- Sealant pulling away from one side of the joint
- Hard, crazed mastic that has stopped moving
- Movement joints with cracked, split or missing sealant
- Movement joints filled with mortar instead of sealant
For landlords with property near Longcross station, split movement joints are easy to miss on a rental until damp shows inside.
Comparing quotes
- What product goes in the joint
- What the cure time is
- How hidden problems are handled
- Whether all the old sealant comes out first
Questions from Wentworth
Is Wentworth within the area you cover?
Yes, Wentworth is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you cover Wentworth for external mastic?
Yes, Wentworth is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Can new sealant go over the old?
No. Fresh sealant does not stick to old sealant, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Why is there a gap in my brick wall?
Walls move with heat, cold and moisture, so long walls have planned gaps to take that movement. It’s closed with backing rod and a flexible sealant.
Is there a guarantee?
Yes, always. Each job is guaranteed for twelve months, large or small.
Do you take out the old sealant first?
Yes, every time. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
What is backing rod for?
That’s backing rod, a closed-cell foam. It stops the sealant going in too deep and bonding to three sides so it can flex with the joint.
Do you work for hotels and businesses?
Yes, regularly. Larger jobs can be planned room by room or area by area to suit the site.
What happens if it’s left?
A properly done movement joint is an even line in a colour that suits the wall. A rushed bead with no backing looks untidy and does not last. In a small place like Wentworth, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why us?
- Quality sealants from Arbo and Everbuild
- Domestic, commercial and hotel work
- One-year guarantee on every job
- White, clear, grey or coloured to suit, where the product allows
Places near Wentworth
What else we do in Wentworth
How the job changes by surface
Copings and trims
Copings expand and contract through the day, so a flexible sealant suits them best year round.
Render joints
Render has movement joints and stop beads that need sealing. We reseal them with a flexible exterior sealant that suits the render colour.