Hampshire · England
Trotton External Mastic
Specialist external mastic for Trotton: careful preparation, the right product and tidy work. Call for a quick quote.
- Rain getting behind render or cladding at a joint
- Brick movement joints where the sealant has split
- Weathered mastic that no longer stretches
External mastic in Trotton
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 access is needed. We work on render & cladding joints, brickwork movement joints and joints between brick and frames, and the jobs we see most are failed seals between different materials and movement joints filled with mortar instead of sealant.
Older homes in small places like Trotton 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.
Whatever the size of the job, you get the same 12-month guarantee.
- Location
- Trotton (GU31)
- Region
- Hampshire
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What happens on the day
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Trotton needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First we look over the joints with you, agree which to renew and talk through access.
- The old mastic and anything lodged in the joint is removed.
- We clean both faces of the joint and prime them where the product calls for it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Plan for the work area to be out of bounds to pets and children
- Tell us if parking is tricky
Ask for a quote
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To arrange one, ring 0345 464 0079 or email us.
Related advice
Can I do it myself?
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.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.
Nearby places to Trotton
Other services in Trotton
For landlords and businesses
If you manage several properties in or around Trotton, several properties can be quoted together. Send us the addresses and the work at each, and photos by email help.
Failed sealant is one of the commonest items on a check-out report. Several properties can be quoted together.
What affects the quote in Trotton
Call for a quick quote. What matters most is:
- The amount of work
- Working hours on commercial sites
- The number of rooms or windows
- The product the joint needs
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
What to tell us for a quote
What to tell us when you ask for a quote:
- The type of property
- A few photos by email, if you can
- Any access issues, like height or stairs
- Where the job is, and your postcode
For a quote, call 0345 464 0079 or send us an email with the location and a short description of the problem. We will send you a clear quote before any work starts.
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- Keep high-pressure jets off the joints
- Act on the first splits you see
- Point out the joints to other trades
- Never let anyone fill a movement joint with mortar
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
A joint that has stopped moving pushes the movement elsewhere, normally as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
Walls and rooflines in Trotton
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. Historic houses like Cowdray House (about 3.2 miles east) are a reminder that the area around Trotton has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
For site and facilities teams at buildings such as Stedham Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Trotton is about 6 miles east of Petersfield, in Hampshire. Trotton gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Trotton is one of 683 places in Hampshire where we work for external mastic. We also work in Portsmouth, about 18 miles from Trotton.
We work across the GU31 postcode area for external mastic and the streets around it. We also cover the places around Trotton: Dumpford (1 mile south-west), Elsted Marsh (1 mile south), Ingrams Green (1 mile south), Elsted (2 miles south-west) and Didling (2 miles south). We also work in nearby towns such as Havant (12 miles south-west), Horndean (11 miles south-west), Alton (13 miles north-west), Waterlooville (13 miles south-west), Petersfield (6 miles west) and Purbrook (13 miles south-west).
Near you in Trotton
Around Trotton, our work takes us to homes and buildings near The Keeper's Arms Public House. Other landmarks nearby include Midhurst Community Hospital (3 miles east) and Midhurst Museum (2.9 miles east). For a walk, there’s Iping and Stedham Commons and Wheeler's Down.
Do you need external mastic in Trotton?
Using the wrong sealant is another common reason. A high-modulus or general-purpose sealant can be too rigid for a busy joint, so it pulls away from the edges.
It’s worth asking for a quote if you see:
- Movement joints with cracked, split or missing sealant
- Panel joints letting water in
- Weathered mastic that no longer stretches
- Damp patches traced to an open external joint
For an older house near a landmark such as St George's Church, an extension built onto an older house moves differently, and the joint between them takes the strain.
Comparing quotes
- Whether they’re fully insured
- What the cure time is
- The length of the guarantee
- What the quote includes, VAT included or not
When it isn’t the sealant
A few problems are outside what sealant work can do:
- Rising or penetrating damp from elsewhere in the wall
- Render that’s blown, hollow or coming away
- Structural movement, which needs a surveyor or engineer
If you are not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer.
Where we work in Trotton
- Concrete & block
- Joints between brick and frames
- Render & cladding joints
- Copings & trims
- Façade panels
- Brickwork movement joints
FAQs for Trotton
Is Trotton within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is there a guarantee on external mastic in Trotton?
Every job comes with our one-year guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
Can you seal joints between render and window frames?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. The colour is chosen to suit.
Can you do several jobs on one visit?
Yes, we can. More than one area can go on one quote.
Can you reach joints on upper floors?
Each building is different. Tell us the height, the number of joints and what’s below them, and we’ll confirm what access is needed.
How often do external joints need resealing?
It varies with how exposed the wall is and how much the joint moves. Signs to watch for are cracking, hardening and gaps at the edges.
Are you insured?
Yes, we’re fully insured for domestic and commercial work.
Is there any odour?
Some sealants have a smell while they cure. Ventilation helps.