Hampshire · England
Park Gate External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for Park Gate, backed by a one-year guarantee. Call for a quick quote.
- Leaking joints around cladding and façade panels
- Damp patches traced to an open external joint
- Joints pointed up with cement by mistake
DIY versus a professional finish
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
About our external mastic in Park Gate
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible exterior sealant takes up that movement where mortar or filler would crack. If you are dealing with movement joints with cracked, split or missing sealant and rain getting behind render or cladding at a joint, we can put it right, whatever the surface.
In a village or hamlet like Park Gate, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
You’re covered for a year from the day we finish. If anything is not right with it, ring 0345 464 0079 or send us an email.
- Location
- Park Gate (SO31)
- Wider area
- Hampshire
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Why it’s worth doing now in Park Gate
Low-modulus sealants stretch easily, so they put less strain on the joint 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. Older cottages and farmhouses around Park Gate can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
What it costs depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. We give a clear quote before any work starts, so you know where you stand.
Why Park Gate clients choose us
- Neat joints and a tidy finish
- ARBOMaster approved applicator
- More than 20 years in sealant work
- We agree the colour with you first
Read how sealant jobs are priced or our reviews.
Looking after it afterwards
How long the joints last depends on use and care. We suggest:
- Deal with leaking gutters that soak the joints below
- Get split or bare joints resealed while the damage is small
- Clear growth from the base of walls and joints
- Check the sealant is paintable before painting near it
Only paint over the joint if we have confirmed the sealant can take paint. Many exterior sealants are not designed to be painted and spoil the finish.
An open movement joint lets rain into the wall every time it pours. That can lead to damp patches, staining and frost damage which cost more to put right than the joint.
Common problems we fix in Park Gate
A lot of failed joints come down to preparation: dusty or wet faces, no primer where one was needed, or old sealant left in. The new sealant then lets go long before it should.
Look out for any of the following:
- Joints with sealant missing in places
- Movement joints filled with mortar instead of sealant
- Plants rooting in failed movement joints
- Water getting into walls through failed joints
If you live in an older home near St Margaret Mary, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Comparing quotes
- Which sealant they’ll use, and why
- Are they insured?
- What preparation is included
- What the quote includes, VAT included or not
The process
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, do the work and clear up. Most jobs take anything from a few hours to several days, depending on the building. Somewhere as small as Park Gate, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each joint is checked and the colour of the new sealant agreed.
- 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.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
How to prepare
- Mention any parking rules near the property
- Let us know about stairs, lifts or work at height
- Clear items away from the joints we are working on
Getting a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
Related advice
Your questions about external mastic in Park Gate
I let a flat near Swanwick station. Can you help?
Yes, we work for landlords and agents. Just ring 0345 464 0079 or send us an email and tell us about the property, and we will send you a clear quote.
Do you cover smaller places like Park Gate?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
What colours does the sealant come in?
The aim is a neat, even joint in a colour that suits the wall. We will talk through colour options before any work starts.
What do you need from me for a quote?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply call 0345 464 0079 or send us an email.
Is there any odour?
It depends on the product. Some products have a noticeable smell, others very little.
How long does external mastic take?
A typical job takes a few hours for a handful of joints, longer for a whole elevation, including the preparation. Your quote will say how long we expect yours to take.
How do you reach high-level joints?
It depends on the building. Send us pictures and a rough idea of the height and we’ll confirm how they can be reached safely.
Can you seal over the old sealant?
No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Outside joints around Park Gate
Park Gate is within about 3 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Compared with the north and west, the South East gets less rain, 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 Park Gate Primary School, its movement joints, gutters and trims need looking after like any other building’s. For landlords with property near Swanwick station, outside joints that have cracked can let damp into a rental, so check them between lets.
Park Gate is about 3 miles south-east of Hedge End, in Hampshire. If you need external mastic in Park Gate, please ring 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Hampshire, Park Gate included. Across Hampshire, we cover 683 places, and Park Gate is one of them. For nearby work, see our Southampton page.
We cover every part of SO31 for external mastic. External mastic is available to properties on Station Road, Botley Road and Middle Road. If you’re just outside Park Gate, we cover Sarisbury (1 mile west), Locks Heath (1 mile south), Segensworth (1 mile east), Whiteley (1 mile north-east) and Swanwick (1 mile north-west). We also work in nearby towns such as Winchester (13 miles north), Gosport (7 miles south-east), Havant (12 miles east), Eastleigh (7 miles north-west), Fareham (3 miles south-east) and Horndean (11 miles east).
Near you in Park Gate
Locally, jobs take us to homes and businesses close to Brookfield Community School and Language College. There’s a railway station in Park Gate itself: Swanwick station. Other landmarks nearby include Bursledon Brickworks Industrial Museum (1.4 miles north-west) and St Andrew's Castle (2.6 miles south-west). Open spaces near Park Gate include Swanwick Lakes.
Also near Park Gate
Also in Park Gate
How the job changes by surface
Render joints
Render is weaker at the surface than brick, so a low-modulus sealant is kinder to the joint edges. We prime where the product needs it.
Copings and trims
A failed coping joint lets water into the top of the wall. Sealing them early saves the wall below.
What affects the quote in Park Gate
The price is agreed before any work begins. It’s based on:
- When we can work, for business premises
- The size of the job
- The type of sealant required
- The old material and how stubborn it is
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
Helping us quote
Before you ask for a quote, have a think about:
- Pictures of the joints, sent by email
- How we’d reach the joints
- How many joints, rooms or windows are involved
- The problem you’ve noticed
For external mastic in Park Gate, phone 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.